Aramco Meterological Data

Previous Issue: 17 November 2008 Next Planned Update: 17 May 2016

Page 1 of 27

Primary contact: Hejazi, Ramzi Fouad on 966-3-8760383

CopyrightSaudi Aramco 2011. All rights reserved.

Engineering Standard SAES-A-112 17 May 2011

Meteorological and Seismic Design Data

Document Responsibility: Environmental Standards Committee

Saudi Aramco DeskTop Standards Table of Contents 1 Scope............................................................. 2

2 Conflicts and Deviations................................. 2

3 References..................................................... 2

4 Definitions...................................................... 3 Appendix I............................................................. 9

Document Responsibility: Environmental Standards Committee SAES-A-112

Issue Date: 17 May 2011

Next Planned Update: 17 May 2016 Meteorological and Seismic Design Data

Page 2 of 27

1 Scope

This standard defines the basic meteorological and seismic data to be used in the design

of all Saudi Aramco facilities. These data are presented in tabular form in Appendix I.

Commentary Note:

Saudi Aramco meteorological standards are based on the best available data; some locations have longer term data sets than others. As pertinent reference material becomes available, meteorological data for Saudi Aramco installations will be revised and expanded.

This entire standard may be attached to and made a part of purchase orders.

2 Conflicts and Deviations

2.1 Any conflicts between this standard and other applicable Saudi Aramco

Engineering Standards (SAESs), Saudi Aramco Materials System Specifications

(SAMSSs), Saudi Aramco Standard Drawings (SASDs), or industry standards,

codes, and forms shall be resolved in writing by the Company or Authorized

Representative through the Manager, Environmental Protection Department of

Saudi Aramco.

2.2 Direct all requests to deviate from this standard in writing to the Company or

Authorized Representative, who shall follow internal Company procedure

SAEP-302 and forward such requests to the Manager, Environmental Protection

Department of Saudi Aramco.

3 References

The selection of material and equipment, and the design, construction, maintenance, and

repair of equipment and facilities covered by this standard shall comply with the latest

edition of the references listed below, unless otherwise noted.

3.1 Saudi Aramco References

Saudi Aramco Engineering Procedure

SAEP-302 Instructions for Obtaining a Waiver of a

Mandatory Saudi Aramco Engineering

Requirement

Saudi Aramco Engineering Standards

SAES-A-113 Geotechnical Engineering Requirements

SAES-M-005 Design and Construction of Fixed Offshore

Platforms




Page 3 of 27

Saudi Aramco Engineering Reports

SAER-2359 Arabian Gulf Hindcast Study

SAER-5307 Outdoor Design Temperatures for HVAC and

Heat Exchangers

SAER-5565 Red Sea Hindcast Study

SAER-6089 Final Report on Seismic Acceleration Contour

Maps for Saudi Arabia, July 2006

Commentary Notes:

It provides maximum considered earthquake spectral response accelerations at short and long periods consistent with ICC IBC 2006 (NEHRP 2003).

Tabulated acceleration values in this standard were updated and new stations were added in 2007-2008.

3.2 Industry Codes and Standards

International Code Council (ICC)

ICC IBC 2006 International Building Code

American Society of Civil Engineers

ASCE/SEI 7 - 05 Minimum Design Loads for Buildings and Other

Structures

4 Definitions

This section defines the meteorological and seismic data presented in Tables 1 & 2

Commentary notes in Section 4 suggest how Meteorological and Seismic Design Data

are typically used.

4.1 Station Location and Elevation

Station Coordinates: The approximate latitude and longitude of the plant site

in the geodetic units of degrees and minutes.

Commentary Note:

This information can be used in Heating, Ventilation and Air Conditioning (HVAC) design to determine the position of the sun at various times of the year.

Site Elevation: Approximate elevations are listed for Saudi Aramco sites and

relative to sea level.




Page 4 of 27

Commentary Note:

These elevations are used by process, equipment, and utility engineers for calculation of atmospheric pressure. Seasonal site specific atmospheric pressure is also available from the Environmental Protection Department.

4.2 Ambient Air & Soil Temperatures: Temperature readings obtained from the

Saudi Aramco and PME local weather stations are as follows:

Commentary Note:

This information in this section can be used in Heating, Ventilation and Air Conditioning (HVAC) design - see SAER-5307, as well as other applications requiring ambient air temperature data.

Average Annual Temperature: An average of the daily temperatures for the

year averaged over a number of years.

Average Daily Maximum Temperature: An average of the daily temperatures

for the hottest month averaged over a number of years.

Commentary Note:

This value is used in the rating of transformers and electric motors.

Monthly Normal Maximum Temperature: The average of the maximum daily

temperature recorded during the hottest month averaged over a number of years.

Commentary Note:

This value is used in the rating of transformers and electric motors.

Average Daily Soil Temperature: The average daily soil temperature for the

hottest month, measured one meter below grade, averaged over a number of

years.

Commentary Note:

This value is used for underground cable applications and buried pipelines.

Monthly Normal Maximum Soil Temperature: The average of the maximum

daily soil temperature, measured one meter below grade, during the hottest

month averaged over a number of years.

Commentary Note:

This value is used for underground cable applications and buried pipelines.

Lowest One Day Mean Temperature: Determined by finding the lowest value

of the daily mean temperatures over the entire period of records.




Page 5 of 27

Commentary Note:

An ambient temperature that may be required for the minimum design metal temperature for equipment that is significantly pressurized at ambient temperatures.

Highest One Day Mean Temperature: Determined by finding the highest

value of the daily mean temperatures over the entire period of records.

Commentary Note:

An ambient temperature that may be required to determine the maximum metal temperatures used in the design of structures, piping systems and certain types of equipment.

Lowest Recorded Temperature: The lowest ambient air temperature that has

been recorded at a particular site.

Highest Recorded Temperature: The highest ambient air temperature that has

been recorded at a particular site.

Summer Design Dry Bulb Temperature: A dry bulb temperature that has

been equaled or exceeded by 1%, 2.5% or 5% (30 hrs, 73 hrs, or 146 hrs) of the

total hours during the months of June through September.

Wet Bulb Temperature: The lowest temperature that can be obtained by

evaporating water into the air.

Mean Coincident Wet Bulb Temperature: The mean of all wet bulb

temperatures occurring at the specific Summer Design Dry Bulb Temperature.

Summer Design Wet Bulb Temperature: A wet bulb temperature that has

been equaled or exceeded by either 1% or 2.5% (30 hrs or 73 hrs) of the total

hours during the months of June through September.

Mean Coincident Dry Bulb Temperature: The mean of all dry bulb

temperatures occurring at the specific summer design wet bulb temperature.

Mean Daily Range: The difference between the average daily maximum and

average daily minimum temperatures during the month of August.

Winter Design Dry Bulb Temperature: A temperature that has been equaled

or exceeded by 99% of the total hours during the months of December, January

and February.

4.3 Wind

Wind data are compiled from local weather stations where it is measured




Page 6 of 27

10 meters above grade in open terrain and reported as follows:

Basic Wind Speed: Basic Wind Speed data are provided in terms of a 3-second

gust expressed in SI for 50-year mean recurrence intervals.

Commentary Note:

This data is used for the design of structures, buildings, pressure vessels, piping, storage tanks, air-cooled heat exchangers, cooling towers, stacks, and similar equipment.

Prevailing Wind Direction: The compass direction (N, NNE, NE, ENE, E,

etc.) from which the wind blows the greatest percent of the time.

Commentary Note:

Since up to 16 points of direction (N, NNE, NE, ENE, E, etc.) may be used to describe the direction from which the wind is blowing, the directions given in Table 1 could represent less than 10% of the total time the wind is blowing. Where wind direction considerations are critical, a wind rose diagram may be available from the Environmental Protection Department.

Exposure Category: An exposure category reflects the characteristic of ground

surface irregularities at a particular site.

Commentary Note:

This category is used to account for large variations in ground surface roughness that arises from natural topography and vegetation as well as from constructed features. This factor is used in calculating wind pressures using either the ICC IBC 2006 or ASCE/SEI 7 - 05.

4.4 Earthquake Data

Commentary Note:

For more data and details refer to the Supervisor of the Civil Engineering Unit of CSD.

Short Period Acceleration (SS): The mapped maximum considered earthquake

spectral response acceleration at a short period.

One-Second Period Acceleration (S1): The mapped maximum considered

earthquake spectral response acceleration at a period of 1-sec.

Commentary Note:

SS and S1 values have been determined based on SAER-6089. They are to be used as per procedures in ASCE/SEI 7 - 05 and ICC IBC 2006 to calculate the design spectral response acceleration parameters.




Page 7 of 27

Peak Ground Acceleration (PGA): The peak ground acceleration is the

maximum acceleration experienced by the structure that is attached to the earth

during the course of the earthquake motion.

Commentary Note:

The PGA is not used for structural analysis/design purpose. It is used to address soil liquefaction. Note that for Seismic Design Category D and higher, the potential for soil liquefaction requires consideration of both site peak ground accelerations and earthquake magnitude. PGA may be determined based on a site-specific study taking into account soil amplification effect or, in the absence

of such a study, PGA shall be assumed equal to SDS/2.5. SDS is the design, 5% damped, spectral response acceleration parameter at short period.

Site Class: A classification assigned to a site based on the types of soils present

and their engineering properties as per IBC or ASCE 7 Site Classification Tables

1615.1.1 or 9.4.1.2 respectively.

4.5 Precipitation

Commentary Note:

The amount of precipitation (rainfall) is a factor used in storage tank design, drainage design, waste-water discharge quality control, and similar items. It should be realized that the desert climate and length of record make recorded values highly variable (for example, Dhahran has 60 years of data while Tanajib has 12 years).

Rainfall, Average Annual: This is the annual average rainfall based on as

many years of data as available.

Rainfall Maximum in 24 Hours: This is the maximum precipitation recorded

in 24 hours.

Rainfall Intensity Coefficients: These coefficients are provided for return

periods of 5, 10, 25, 50 and 100 years. The coefficients are used in the Steel

Formula [I = K/ (t+b)] to calculate the average maximum precipitation rates for

storm durations up to two hour.

Where: I = Rainfall Intensity in mm/hr (in/hr),

t = time of concentration in minutes, and

K & b are non-dimensional coefficients

Isokeraunic Levels: A rough measure of lightning frequency.

Commentary Note:

These values are used in the design of grounding and lightning protection systems.




Page 8 of 27

4.6 Ambient Air Quality

Commentary Note:

Air-borne dust concentrations and contaminant levels are used in mechanical equipment design, when sizing air filters and as a measure of potential dust ingress in bearing housings, lube oil systems, etc.

Dust Concentration: The mass of total suspended airborne particulate matter

per unit volume of air. Usual airborne dust concentration is 1 mg/m. During

sandstorms, dust concentrations may reach 500 mg/m. Particle sizes are as

follows:

95% of all particles are less than 20 micrometers

50% of all particles are less than 1.5 micrometers

Elements present in dust include compounds of calcium, silicon, magnesium,

aluminum, potassium, chlorides and sodium. When wetted (high humidity

conditions) these compounds function as electrolytes and can result in severe

corrosion.

Other pollutants present in the atmosphere under the most extreme conditions are:

H2S 20 ppm (vol/vol)

Hydrocarbon 150 ppm (vol/vol)

SO2 10 ppm (vol/vol)

CO 100 ppm (vol/vol)

NOx 5 ppm (vol/vol)

O3 1 ppm (vol/vol)

4.7 Meteorological and Oceanographic Data for Offshore Structures

Offshore Structures: For the design of offshore structures the wind, current

and wave design data should be taken from SAER-2359 Arabian Gulf Hindcast Study, and SAER-5565 Red Sea Hindcast Study.

Revision Summary 17 May 2011 Major revision. The number of listed sites was increased to 51.




Page 9 of 27

Appendix I

Table 1 Design Data - SI Units

Data Categories Abha Abqaiq Abu

Sa'fah Al-Baha Al-Jauf

Elevation Above Sea Level, m 2200 79 16 1651 559

Station Coordinates: Latitude North 1812' 2556' 2654' 2017' 2956'

Longitude East 4229' 4942' 5030' 4138' 4012'

Ambient Air & Soil Temperatures, (C):

Average Annual Temperature 19 27 26 23 22

Average Daily Maximum Temp. (hottest month) 23 38 33 29 32

Monthly Normal Max. Temp. (hottest month) 30 45 35 34 39

Average Daily Soil Temp. (1 m below grade) - 32 Note 2 - -

Mo. Normal Max. Soil Temp. (1 m below grade) - 33 Note 2 - -

Lowest One-Day Mean Temperature 7 6 10 4 1

Highest One-Day Mean Temperature 28 42 39 32 39

Lowest Recorded Temperature 0 -3 10 0 -5

Highest Recorded Temperature 40 52 44 42 49

Summer Design Dry Bulb Temp. @ 1% 31 47 37 36 42

Mean Coincident Wet Bulb Temp. @ 1% 13 22 - 16 19

Summer Design Dry Bulb Temp. @ 2.5% 30 45 36 35 41

Mean Coincident Wet Bulb Temp. @ 2.5% 13 22 - 16 18

Summer Design Wet Bulb Temp. @ 1% 20 28 - 21 20

Mean Coincident Dry Bulb Temp. @ 1% 25 36 - 31 40

Summer Design Wet Bulb Temp. @ 2.5% 19 27 - 20 19

Mean Coincident Dry Bulb Temp. @ 2.5% 24 35 - 29 38


Mean Daily Range 12 15 3 10 13

Winter Design Dry Bulb Temp. @ 99% 5 6 13 6 0

Wind:

Basic Wind Speed, 3-sec gust, km/hr 50 yr 145 155 Note 2 145 165

Exposure Category (Note 1) C C Note 2 - C

Prevailing Direction SSW NW NW E W

Earthquake Data:

Short Period Acceleration (SS) in %g 16.9 13.8 14.3 16 12.0

1-Sec Period Acceleration (S1) in %g 4.8 4.0 5.2 4.6 3.4

Peak Ground Acceleration in %g (Note 5) 4.00 3.00 3.00 3.00 2.00

Site Class (Note 4) D D D D D

Precipitation, mm:

Rainfall, Average Annual 330 82 - 154 59

Rainfall Maximum in 24 hours 131 80 - 118 34

Rainfall Intensity - Note 3 Note 3 Note 3 Note 3

Isokeraunic Levels (days lightning/year) 101 20 25 63 12

See notes at the end of the document.




Page 10 of 27

Table 1 Design Data - SI Units (Continued)

Data Categories Ar'ar' Berri Bisha Dhahran Duba



Longitude East 4108' 4935' 4237' 5008' 3544'



Average Daily Maximum Temp. (hottest month) 33 36 32 36 31


Average Daily Soil Temp. (1 m below grade) - 32 - 32 -

Mo. Normal Max. Soil Temp. (1 m below grade) - 32 - 33 -

Lowest One-Day Mean Temperature -1 8 7 6 16


Lowest Recorded Temperature -9 0 -1 -1 5


Summer Design Dry Bulb Temp. @ 1% 43 44 40 44 -

Mean Coincident Wet Bulb Temp. @ 1% 20 21 18 23 -

Summer Design Dry Bulb Temp. @ 2.5% 42 43 40 43 -

Mean Coincident Wet Bulb Temp. @ 2.5% 20 21 17 23 -

Summer Design Wet Bulb Temp. @ 1% 23 29 21 30 -

Mean Coincident Dry Bulb Temp. @ 1% 39 34 33 35 -

Summer Design Wet Bulb Temp. @ 2.5% 21 28 20 30 -

Mean Coincident Dry Bulb Temp. @ 2.5% 38 34 33 35 -



Winter Design Dry Bulb Temp. @ 99% 0 7 6 7 -

Wind:

Basic Wind Speed, 3-sec gust, km/hr 50 yr 150 145 150 145 145

Exposure Category (Note 1) C C C C C

Prevailing Direction W N ENE NW WNW

Earthquake Data:

Short Period Acceleration (SS) in %g 3.4 8.5 7 8.2 27.1


Peak Ground Acceleration in %g (Note 5) 0.81 2.00 2.8(*)

1.00 6.00


Precipitation, mm:

Rainfall, Average Annual 73 99 91 83 28

Rainfall Maximum in 24 hours 38 96 72 63 116

Rainfall Intensity Note 3 Note 3 Note 3 Note 3 Note 3






Page 11 of 27


Data Categories

East/West Pump Stations

No. 3 No. 6 No. 10 Guriat Hafr

Al-Batin Hail Haradh

Elevation Above Sea Level, m 530 771 866 504 414 1001 300

Station Coordinates: Latitude North 2510' 2442' 2406' 3125' 2753' 2726' 2404'

Longitude East 4730' 4458' 4102' 3717' 4533' 4141' 4901'


Average Annual Temperature 25 25 22 20 25 22 27

Average Daily Maximum Temp. (hottest month) 36 34 34 29 36 33 37

Monthly Normal Max. Temp. (hottest month) 43 42 42 38 43 39 45

Average Daily Soil Temp. (1 m below grade) 33 32 33 - - - 34

Mo. Normal Max. Soil Temp. (1 m below grade) 34 33 34 - - - 36

Lowest One-Day Mean Temperature 5 7 - 0 2 -1 2

Highest One-Day Mean Temperature 38 39 - 38 41 38 48

Lowest Recorded Temperature -2 -5 -2 -9 -5 -9 -6

Highest Recorded Temperature 47 46 44 47 55 48 50

Summer Design Dry Bulb Temp. @ 1% 44 43 - 41 45 42 -

Mean Coincident Wet Bulb Temp. @ 1% - - - 18 20 19 -

Summer Design Dry Bulb Temp. @ 2.5% 43 41 - 39 44 41 -

Mean Coincident Wet Bulb Temp. @ 2.5% - - - 18 19 18 -

Summer Design Wet Bulb Temp. @ 1% - - - 22 22 20 -

Mean Coincident Dry Bulb Temp. @ 1% - - - 34 39 39 -

Summer Design Wet Bulb Temp. @ 2.5% - - - 21 20 19 -

Mean Coincident Dry Bulb Temp. @ 2.5% - - - 32 41 38 -

Summer Design Dry Bulb Temp. @ 5% - - - 38 43 40 -

Mean Daily Range 14 15 19 17 13 15 21

Winter Design Dry Bulb Temp. @ 99% - - - -1 2 -1 -

Wind:

Basic Wind Speed, 3-sec gust, km/hr 50 yr 145 150 165 160 175 180 145

Exposure Category (Note 1) C C C C C C C

Prevailing Direction N SE W WNW N S NNE

Earthquake Data:

Short Period Acceleration (SS) in % g 0.9 11.7 18.1 14.3 2.4 13.4 15.9

1-Sec Period Acceleration (S1) in %g 0.3 3.4 5.2 4.0 0.6 4.3 4.5

Peak Ground Acceleration in % g (Note 5) 0.21 2.00 4.00 5.7(*)

1.0(*) 3.00 3.00

Site Class (Note 4) D D D D D D D

Precipitation, mm:

Rainfall, Average Annual - - - 47 127 130 40

Rainfall Maximum in 24 hours - - - 37 65 80 16

Rainfall Intensity Note 3 Note 3 Note 3 Note 3 Note 3 Note 3 Note 3

Isokeraunic Levels (days lightning/year) 18 16 8 11 22 31 16





Page 12 of 27


Data Categories Hawtah Hofuf Jeddah Jizan Ju'aymah Jubail Khafji

Elevation Above Sea Level, m 635 160 17 7 5 6 1


Longitude East 4654' 4934' 3911' 4235' 4956' 4932' 4832'



Average Daily Max. Temp. (hottest month) 36 37 33 34 34 36 38


Average Daily Soil Temp. (1 m below grade) 34 30 - - 31 33 36

Mo. Normal Max. Soil Temp. (1 m below grade) 35 31 - - 31 33 36

Lowest One-Day Mean Temperature 4 5 16 21 8 7 7

Highest One-Day Mean Temperature 41 42 37 36 40 40 41

Lowest Recorded Temperature -4 -2 9 12 2 3 1


Summer Design Dry Bulb Temp. @ 1% 44 47 41 38 42 45 43

Mean Coincident Wet Bulb Temp. @ 1% 19 24 24 28 28 23 -

Summer Design Dry Bulb Temp. @ 2.5% 43 46 39 38 39 44 42

Mean Coincident Wet Bulb Temp. @ 2.5% 18 24 24 28 24 23 -

Summer Design Wet Bulb Temp. @ 1% 21 29 30 30 31 32 -

Mean Coincident Dry Bulb Temp. @ 1% 39 39 35 36 36 35 -

Summer Design Wet Bulb Temp. @ 2.5% 20 28 29 30 31 31 -

Mean Coincident Dry Bulb Temp. @ 2.5% 40 38 35 36 35 35 -


Mean Daily Range 14 16 11 7 9 12 9

Winter Design Dry Bulb Temp. @ 99% 4 5 15 21 7 7 7

Wind:

Basic Wind Speed, 3-sec gust, (km/hr) 50 yr 145 155 135 165 145 145 145


Prevailing Direction NNE NNW NW SW NNW NNW NW

Earthquake Data:

Short Period Acceleration (SS) in %g 0.5 16.0 30.1 43.5 8.9 8.5 7.6

1-Sec Period Acceleration (S1) in %g 0.1 4.6 11.0 12.4 3.2 3.1 5

Peak Ground Acceleration in %g (Note 5) 3.00 3.00 7.00 10.00 2.00 3.4 3(*)

Site Class (Note 4) D D E D D D D

Precipitation, mm:

Rainfall, Average Annual 112 92 57 134 89 120 104

Rainfall Maximum in 24 hours 50 56 73 90 66 115 60







Page 13 of 27


Data Categories Khamis Mushayt

Khurais Makkah Manifa Marjan Medina

Elevation Above Sea Level, m 2051 430 261 10 21 632

Station Coordinates: Latitude North 1818' 2505' 2126' 27 36' 2827' 2431'

Longitude East 4248' 4808' 3946' 49 0' 4942' 3935'


Average Annual Temperature 20 27 31 26 26 28

Average Daily Max. Temp. (hottest month) 24 38 36 37 34 37

Monthly Normal Max. Temp. (hottest month) 32 42 43 42 39 43

Average Daily Soil Temp. (1 m below grade) - 34 - - Note 2 34

Mo. Normal Max. Soil Temp. (1 m below grade) - 35 - - Note 2 35

Lowest One-Day Mean Temperature 8 - 16 1 10 8

Highest One-Day Mean Temperature 28 - 41 40 39 42

Lowest Recorded Temperature -1 -2 8 0 8 0

Highest Recorded Temperature 40 52 50 50 45 48

Summer Design Dry Bulb Temp. @ 1% 32 50 45 44 - 45

Mean Coincident Wet Bulb Temp. @ 1% 15 22 25 - - 19

Summer Design Dry Bulb Temp. @ 2.5% 31 49 44 43 - 44

Mean Coincident Wet Bulb Temp. @ 2.5% 15 22 24 - - 19

Summer Design Wet Bulb Temp. @ 1% 20 27 29 - - 22

Mean Coincident Dry Bulb Temp. @ 1% 25 40 39 - - 38

Summer Design Wet Bulb Temp. @ 2.5% 19 27 28 - - 21

Mean Coincident Dry Bulb Temp. @ 2.5% 24 40 38 - - 39


Mean Daily Range 12 19 12 12 3 13

Winter Design Dry Bulb Temp. @ 99% 5 8 16 5 - 9

Wind:

Basic Wind Speed, 3-sec gust, (km/hr) 50 yr 145 163 135 145 145 120

Exposure Category (Note 1) C C C C Note 2 C

Prevailing Direction SSW N N NW NW W

Earthquake Data:

Short Period Acceleration (SS) in %g 19.3 2.8 25 9.1 22.3 25.4

1-Sec Period Acceleration (S1) in %g 5.5 0.8 9 3.2 8.1 7.2

Peak Ground Acceleration in %g (Note 5) 4.00 0.67 10(*)

2.50 5.00 6.00

Site Class (Note 4) D D D D D D

Precipitation, mm:

Rainfall, Average Annual 220 116 110 104 - 65

Rainfall Maximum in 24 hours 100 70 71 60 - 53

Rainfall Intensity - Note 3 Note 3 Note 3 Note 3 Note 3

Isokeraunic Levels (days lightning/year) 77 17 20 20 20 20





Page 14 of 27


Data Categories Najran Qaisumah Qasim Qatif Rabigh Rafha


Station Coordinates: Latitude North 1736' 2820' 2618' 2630' 2243' 2937'

Longitude East 4425' 4607' 4358' 5000' 3901' 4330'





Average Daily Soil Temp. (1 m below grade) - - - 32 - -

Mo. Normal Max. Soil Temp. (1 m below grade) - - - 33 - -

Lowest One-Day Mean Temperature 6 2 2 8 17 1

Highest One-Day Mean Temperature 37 42 41 39 39 41

Lowest Recorded Temperature -1 -3 -7 2 11 -6


Summer Design Dry Bulb Temp. @ 1% 40 46 45 40 40 45

Mean Coincident Wet Bulb Temp. @ 1% 17 20 19 28 23 21

Summer Design Dry Bulb Temp. @ 2.5% 39 45 44 39 39 44

Mean Coincident Wet Bulb Temp. @ 2.5% 17 20 19 28 23 21

Summer Design Wet Bulb Temp. @ 1% 21 22 22 34 29 24

Mean Coincident Dry Bulb Temp. @ 1% 34 40 41 34 35 42

Summer Design Wet Bulb Temp. @ 2.5% 20 21 20 33 28 23

Mean Coincident Dry Bulb Temp. @ 2.5% 34 42 41 34 34 41



Winter Design Dry Bulb Temp. @ 99% 7 2 2 8 15 0

Wind:


Exposure Category (Note 1) C C C C C C

Prevailing Direction E N N NNW WNW W

Earthquake Data:

Short Period Acceleration (SS) in %g 25.0 1.1 11.2 8.3 18.8 0.6

1-Sec Period Acceleration (S1) in %g 7.8 0.3 3.2 2.9 6.7 0.2

Peak Ground Acceleration in %g (Note 5) 5.00 0.27 2.00 1.00 4.00 0.2(*)


Precipitation, mm:

Rainfall, Average Annual 64 124 152 87 60 93

Rainfall Maximum in 24 hours 157 64 86 65 63 121

Rainfall Intensity Note 3 Note 3 Note 3 Note 3 Note 3 Note 3






Page 15 of 27


Data Categories Ras

Tanura Riyadh Safaniya Sharorah Shaybah Shedgum


Station Coordinates: Latitude North 2642' 2442' 2800' 1728' 2221' 2536'

Longitude East 5005' 4644' 4848' 476' 5403' 4924'



Average Daily Maximum Temp. (hottest month) 35 37 34 36 40 37


Average Daily Soil Temp. (1 m below grade) - 33 29 - 35 33

Mo. Normal Max. Soil Temp. (1 m below grade) - 34 30 - 36 34



Lowest Recorded Temperature 0 -4 2 0 2 -1













Wind:



Prevailing Direction NNW N NW NE NNE NNW

Earthquake Data:



Peak Ground Acceleration in %g (Note 5) 2.00 0.17 1.00 2.0(*)

1.00 3.00


Precipitation, mm:

Rainfall, Average Annual 109 116 98 71 24 81

Rainfall Maximum in 24 hours 98 70 51 75 12 80







Page 16 of 27


Data Categories Tanajib Tabuk Taif Turaif Udhailiyah



Longitude East 4846' 3635' 4033' 3840' 4920'



Average Daily Max. Temp. (hottest month) 36 31 29 29 37


Average Daily Soil Temp. (1 m below grade) 29 22 - - 32

Mo. Normal Max. Soil Temp. (1 m below grade) 30 23 - - 33

Lowest One-Day Mean Temperature 1 3 6 -1 6


Lowest Recorded Temperature 0 -10 0 -8 -1



Mean Coincident Wet Bulb Temp. @ 1% 26 19 17 18 22


Mean Coincident Wet Bulb Temp. @ 2.5% 26 18 17 17 22

Summer Design Wet Bulb Temp. @ 1% 31 21 22 20 27

Mean Coincident Dry Bulb Temp. @ 1% 34 37 32 34 38

Summer Design Wet Bulb Temp. @ 2.5% 30 20 21 19 25

Mean Coincident Dry Bulb Temp. @ 2.5% 34 36 31 34 36



Winter Design Dry Bulb Temp. @ 99% 5 1 5 -2 5

Wind:

Basic Wind Speed, 3-sec gust, km/hr 50yr 145 150 150 155 155


Prevailing Direction N NNW W W NNW

Earthquake Data:

Short Period Acceleration (SS) in %g 8.1 27.1 16.2 18.6 16


Peak Ground Acceleration in %g (Note 5) 6.00 1.00 6.5(*)

4.00 3.00


Precipitation, mm:

Rainfall, Average Annual 104 48 175 83 68

Rainfall Maximum in 24 hours 59 48 169 86 24







Page 17 of 27


Data Categories Uthmaniyah Wadi Al- Dawaser

Wajeh Yanbu

Elevation Above Sea Level, m 231 622 24 10

Station Coordinates: Latitude North 2513' 2030' 2612' 2407'

Longitude East 4918' 4512' 3629' 3803'


Average Annual Temperature 25 28 25 28

Average Daily Maximum Temp. (hottest month) 36 37 30 33

Monthly Normal Max. Temp. (hottest month) 47 43 33 39

Average Daily Soil Temp. (1 m below grade) 32 - - 31

Mo. Normal Max. Soil Temp. (1 m below grade) 33 - - 32

Lowest One-Day Mean Temperature 6 7 11 12

Highest One-Day Mean Temperature 41 40 35 41

Lowest Recorded Temperature -1 0 1 5

Highest Recorded Temperature 49 49 47 50

Summer Design Dry Bulb Temp. @ 1% 46 45 35 44

Mean Coincident Wet Bulb Temp. @ 1% 22 20 25 25

Summer Design Dry Bulb Temp. @ 2.5% 45 44 34 42

Mean Coincident Wet Bulb Temp. @ 2.5% 22 20 27 25

Summer Design Wet Bulb Temp. @ 1% 25 23 30 30

Mean Coincident Dry Bulb Temp. @ 1% 37 41 33 36

Summer Design Wet Bulb Temp. @ 2.5% 24 22 29 30

Mean Coincident Dry Bulb Temp. @ 2.5% 37 41 32 35


Mean Daily Range 16 12 7 12

Winter Design Dry Bulb Temp. @ 99% 3 7 12 11

Wind:

Basic Wind Speed, 3-sec gust, km/hr 50yr 155 145 145 145

Exposure Category (Note 1) C C C C

Prevailing Direction NNW ESE WNW W

Earthquake Data:

Short Period Acceleration (SS) in %g 16.0 5.0 27.1 20.4

1-Sec Period Acceleration (S1) in %g 4.6 1.0 7.0 5.8

Peak Ground Acceleration in %g (Note 5) 3.00 2.0(*)

10.8(*)

4.00

Site Class (Note 4) D D D D

Precipitation, mm:

Rainfall, Average Annual 68 27 26 36

Rainfall Maximum in 24 hours 24 28 116 49

Rainfall Intensity Note 3 Note 3 Note 3 Note 3

Isokeraunic Levels (days lightning/year) 18 10 5 7





Page 18 of 27

Table 2 Design Data - Customary Units

Data Categories Abha Abqaiq Abu Sa'fah Al-Baha Al-Jauf

Elevation Above Sea Level, ft 7216 259 52 5415 1834


Longitude East 4229' 4942' 5030' 4138' 4012'

Ambient Air & Soil Temperatures, (F):




Average Daily Soil Temp. (3 ft below grade) - 90 - - -

Mo. Normal Max. Soil Temp. (3 ft below grade) - 91 - - -



Lowest Recorded Temperature 32 27 50 32 23



Mean Coincident Wet Bulb Temp. @ 1% 55 72 - 61 66


Mean Coincident Wet Bulb Temp. @ 2.5% 55 72 - 61 64

Summer Design Wet Bulb Temp. @ 1% 68 82 - 70 68

Mean Coincident Dry Bulb Temp. @ 1% 77 97 - 88 104

Summer Design Wet Bulb Temp. @ 2.5% 66 81 - 68 66

Mean Coincident Dry Bulb Temp. @ 2.5% 75 95 - 84 100




Wind:

Basic Wind Speed, 3-sec gust, mph 50 yr 90 96 - 90 103

Exposure Category (Note 1) C C Note 2 - C

Prevailing Direction SSW NW NW E W

Earthquake Data:

Short Period Acceleration (SS) in %g 16.9 13.8 14.3 16.0 12.0


Peak Ground Acceleration in %g (Note 5) 4.0 3.0 3.0 3.0 2.0


Precipitation, inches:

Rainfall, Average Annual 13.0 3.2 - 6.1 2.3

Rainfall Maximum in 24 hours 5.2 3.1 - 4.6 1.3

Rainfall Intensity - Note 3 Note 3 Note 3 Note 3






Page 19 of 27

Table 2 Design Data - Customary Units (Continued)

Data Categories Ar'ar' Berri Bisha Dhahran Duba



Longitude East 4108' 4935' 4237' 5008' 3544'





Average Daily Soil Temp. (3 ft below grade) - 90 - 90 -

Mo. Normal Max. Soil Temp. (3 ft below grade) - 90 - 91 -






Mean Coincident Wet Bulb Temp. @ 1% 68 70 64 73 -

Summer Design Dry Bulb Temp. @ 2.5% 108 109 104 109 -

Mean Coincident Wet Bulb Temp. @ 2.5% 68 70 63 73 -

Summer Design Wet Bulb Temp. @ 1% 73 84 70 86 -

Mean Coincident Dry Bulb Temp. @ 1% 102 93 91 95 -

Summer Design Wet Bulb Temp. @ 2.5% 70 82 68 86 -

Mean Coincident Dry Bulb Temp. @ 2.5% 100 93 91 95 -



Winter Design Dry Bulb Temp. @ 99% 32 45 43 45 -

Wind:

Basic Wind Speed, 3-sec gust, mph 50 yr 93 90 93 90 90


Prevailing Direction W N ENE NW WNW

Earthquake Data:



Peak Ground Acceleration in %g (Note 5) 0.8 2.0 2.8(*) 1.0 6.0



Rainfall, Average Annual 2.9 3.9 3.6 3.3 1.1

Rainfall Maximum in 24 hours 1.5 3.8 2.8 2.5 4.6







Page 20 of 27

Table 2 Design Data - Customary Units (Continued)

Data Categories

East/West Pump Stations

No. 3 No. 6 No. 10 Guriat Hafr

Al-Batin Hail Haradh

Elevation Above Sea Level, ft 1738 2529 2840 1653 1358 3283 984


Longitude East 4730' 4458' 4102' 3717' 4533' 4141' 4901'





Average Daily Soil Temp. (3 ft below grade) 91 90 91 - - - 93

Mo. Normal Max. Soil Temp. (3 ft below grade) 93 91 93 - - - 97

Lowest One-Day Mean Temperature 41 45 - 32 36 30 36

Highest One-Day Mean Temperature 100 102 - 100 106 100 118

Lowest Recorded Temperature 28 23 28 16 23 16 21


Summer Design Dry Bulb Temp. @ 1% 111 109 - 106 - 108 -

Mean Coincident Wet Bulb Temp. @ 1% - - - 64 - 66 -

Summer Design Dry Bulb Temp. @ 2.5% 109 106 - 102 - 106 -

Mean Coincident Wet Bulb Temp. @ 2.5% - - - 64 - 64 -

Summer Design Wet Bulb Temp. @ 1% - - - 72 - 68 -

Mean Coincident Dry Bulb Temp. @ 1% - - - 93 - 102 -

Summer Design Wet Bulb Temp. @ 2.5% - - - 70 - 66 -

Mean Coincident Dry Bulb Temp. @ 2.5% - - - 90 - 100 -

Summer Design Dry Bulb Temp. @ 5% - - - 100 - 104 -

Mean Daily Range 25 27 34 31 23 27 38

Winter Design Dry Bulb Temp. @ 99% - - - 30 - 30 -

Wind:

Basic Wind Speed, 3-sec gust, mph) 50 yr 90 93 103 99 109 112 90


Prevailing Direction N SE W WNW N S NNE

Earthquake Data:



0.2 2.0 4.0 5.7(*) 1.0(*) 3.0 3.0

Site Class (Note 4) D D D D D D D


Rainfall, Average Annual - - - 1.9 5.0 5.1 1.6

Rainfall Maximum in 24 hours - - - 1.5 2.6 3.1 0.6







Page 21 of 27

Table 2 Design Data Customary Units (Continued)

Data Categories Hawtah Hofuf Jeddah Jizan Juay-mah

Jubail Khafji

Elevation Above Sea Level, ft 2083 525 56 23 16 20 3

Station Coordinates: Latitude North 2258 2530 2143 1652 2647 272 2824

Longitude East 4654 4934 3911 4235 4956 4932 4832





Average Daily Soil Temp. (3 ft below grade) 93 86 - - 88 91 97

Mo. Normal Max. Soil Temp. (3 ft below grade) 95 88 - - 88 91 97

Lowest One-Day Mean Temperature 39 41 61 70 46 45 45

Highest One-Day Mean Temperature 106 108 99 97 104 104 106

Lowest Recorded Temperature 25 28 48 54 36 37 34



Mean Coincident Wet Bulb Temp. @ 1% 66 75 75 82 82 73 -

Summer Design Dry Bulb Temp. @ 2.5% 109 115 102 100 102 111 108

Mean Coincident Wet Bulb Temp. @ 2.5% 64 75 75 82 75 73 -

Summer Design Wet Bulb Temp. @ 1% 70 84 86 86 88 90 -

Mean Coincident Dry Bulb Temp. @ 1% 102 102 95 97 97 95 -

Summer Design Wet Bulb Temp. @ 2.5% 68 82 84 86 88 88 -

Mean Coincident Dry Bulb Temp. @ 2.5% 104 100 95 97 95 95 -


Mean Daily Range 25 29 20 13 16 22 16

Winter Design Dry Bulb Temp. @ 99% 39 41 59 70 45 45 45

Wind:

Basic Wind Speed, 3-sec gust, mph 50 yr 90 96 84 103 90 90 90


Prevailing Direction NNE NNW NW SW NNW NNW NW

Earthquake Data:



Peak Ground Acceleration in %g (Note 5) 3.0 3.0 7.0 10.0 2.0 3.4 3(*)

Site Class (Note 4) D D E D D D D


Rainfall, Average Annual 4.4 3.6 2.2 5.3 3.5 4.7 4.1

Rainfall Maximum in 24 hours 2.0 2.2 2.9 3.5 2.6 4.5 2.3







Page 22 of 27


Data Categories Khamis Mushayt

Khurais Makkah Manifa Marjan Medina

Elevation Above Sea Level, ft 6727 1410 856 33 69 2073

Station Coordinates: Latitude North 1818 2505 2126 27 36 2827 2431

Longitude East 4248 4808 3946 49 0 4942 3935





Average Daily Soil Temp. (3 ft below grade) - 93 - - - 93

Mo. Normal Max. Soil Temp. (3 ft below grade) - 95 - - - 95

Lowest One-Day Mean Temperature 46 - 61 34 50 46

Highest One-Day Mean Temperature 82 - 106 104 102 108

Lowest Recorded Temperature 30 28 46 32 46 32



Mean Coincident Wet Bulb Temp. @ 1% 59 72 77 - - 66

Summer Design Dry Bulb Temp. @ 2.5% 88 120 111 109 - 111

Mean Coincident Wet Bulb Temp. @ 2.5% 59 72 75 - - 66

Summer Design Wet Bulb Temp. @ 1% 68 81 84 - - 72

Mean Coincident Dry Bulb Temp. @ 1% 77 104 102 - - 100

Summer Design Wet Bulb Temp. @ 2.5% 66 81 82 - - 70

Mean Coincident Dry Bulb Temp. @ 2.5% 75 104 100 - - 102



Winter Design Dry Bulb Temp. @ 99% 41 46 61 41 - 48

Wind:

Basic Wind Speed, 3-sec gust, mph 50 yr 90 101 84 90 90 75

Exposure Category (Note 1) C C C C Note 2 C

Prevailing Direction SSW N N NW NW W

Earthquake Data:



Peak Ground Acceleration in %g (Note 5) 4.0 0.7 10(*) 2.5 5.0 6.0



Rainfall, Average Annual 8.7 3.2 4.3 4.1 - 2.6

Rainfall Maximum in 24 hours 3.9 - 2.8 2.4 - 2.1

Rainfall Intensity - Note 3 Note 3 Note 3 Note 3 Note 3






Page 23 of 27


Data Categories Najran Qaisumah Qasim Qatif Rabigh Rafha


Station Coordinates: Latitude North 1736 2820 2618 2630 2243 2937

Longitude East 4425 4607 4358 5000 3901 4330





Average Daily Soil Temp. (3 ft below grade) - - - 90 - -

Mo. Normal Max. Soil Temp. (3 ft below grade) - - - 91 - -
















Wind:

Basic Wind Speed, 3-sec gust, mph 87 112 93 93 93 96


Prevailing Direction E N N NNW WNW W

Earthquake Data:



Peak Ground Acceleration in %g (Note 5) 5.0 0.3 2.0 1.0 4.0 0.2(*)



Rainfall, Average Annual 2.5 4.9 6.0 3.4 2.4 3.7

Rainfall Maximum in 24 hours 6.2 2.5 3.4 2.6 2.5 4.8







Page 24 of 27


Data Categories Ras

Tanura Riyadh Safaniya Sharorah Shaybah Shedgum


Station Coordinates: Latitude North 2642 2442 2800 1728 2221 2536

Longitude East 5005 4644 4848 476 5403 4924





Average Daily Soil Temp. (3 ft below grade) - 91 84 - 95 91

Mo. Normal Max. Soil Temp. (3 ft below grade) - 93 86 - 97 93
















Wind:

Basic Wind Speed, 3-sec gust, mph 50 yr 90 90 90 84 90 96


Prevailing Direction NNW N NW NE NNE NNW

Earthquake Data:



Peak Ground Acceleration in %g (Note 5) 2.0 0.2 1.0 2.0(*) 1.0 3.0



Rainfall, Average Annual 4.3 4.6 3.9 2.8 0.9 3.2

Rainfall Maximum in 24 hours 3.9 2.8 2.0 3.0 0.5 3.1







Page 25 of 27


Data Categories Tanajib Tabuk Taif Turaif Udhailiyah


Station Coordinates: Latitude North 2752 2822 2129 3141 2509

Longitude East 4846 3635 4033 3840 4920





Average Daily Soil Temp. (3 ft below grade) 84 72 - - 90

Mo. Normal Max. Soil Temp. (3 ft below grade) 86 73 - - 91






Mean Coincident Wet Bulb Temp. @ 1% 79 66 63 64 72


Mean Coincident Wet Bulb Temp. @ 2.5% 79 64 63 63 72

Summer Design Wet Bulb Temp. @ 1% 88 70 72 68 81

Mean Coincident Dry Bulb Temp. @ 1% 93 99 90 93 100

Summer Design Wet Bulb Temp. @ 2.5% 86 68 70 66 77

Mean Coincident Dry Bulb Temp. @ 2.5% 93 97 88 93 97




Wind:

Basic Wind Speed, 3-sec gust, mph 50 yr 90 93 93 96 96


Prevailing Direction NW NNW W W NNW

Earthquake Data:



Peak Ground Acceleration in %g (Note 5) 6.0 1.0 6.5(*) 4.0 3.0



Rainfall, Average Annual 4.1 1.9 6.9 3.3 2.7

Rainfall Maximum in 24 hours 2.3 1.9 6.7 3.4 0.9







Page 26 of 27


Data Categories Uthmaniyah Wadi

Al-Dawaser Wajeh Yanbu

Elevation Above Sea Level, ft 758 2040 79 33

Station Coordinates: Latitude North 2513 2030 2612 2407

Longitude East 4918 4512 3629 3803


Average Annual Temperature 77 82 77 82

Average Daily Max. Temp. (hottest month) 97 99 86 91

Monthly Normal Max. Temp. (hottest month) 117 109 91 102

Average Daily Soil Temp. (3 ft below grade) 90 - - 88

Mo. Normal Max. Soil Temp. (3 ft below grade) 91 - - 90

Lowest One-Day Mean Temperature 43 45 52 54

Highest One-Day Mean Temperature 106 104 95 106

Lowest Recorded Temperature 30 32 34 41

Highest Recorded Temperature 120 120 117 122


Mean Coincident Wet Bulb Temp. @ 1% 72 68 77 77

Summer Design Dry Bulb Temp. @ 2.5% 113 111 93 108

Mean Coincident Wet Bulb Temp. @ 2.5% 72 68 81 77

Summer Design Wet Bulb Temp. @ 1% 77 73 86 86

Mean Coincident Dry Bulb Temp. @ 1% 99 106 91 97

Summer Design Wet Bulb Temp. @ 2.5% 75 72 84 86

Mean Coincident Dry Bulb Temp. @ 2.5% 99 106 90 95


Mean Daily Range 29 22 13 22

Winter Design Dry Bulb Temp. @ 99% 37 45 54 52

Wind:

Basic Wind Speed, 3-sec gust, mph 50 yr 96 90 90 90

Exposure Category (Note 1) C C C C

Prevailing Direction NNW ESE WNW W

Earthquake Data:

Short Period Acceleration (SS) in %g 16.0 5.0 27.1 20.4

1-Sec Period Acceleration (S1) in %g 4.6 1.0 7.0 5.8

Peak Ground Acceleration in %g (Note 5) 3.0 2.0(*) 10.8(*) 4.0

Site Class (Note 4) D D D D


Rainfall, Average Annual 2.7 1.1 1.0 1.4

Rainfall Maximum in 24 hours 0.9 1.1 4.6 1.9

Rainfall Intensity Note 3 Note 3 Note 3 Note 3

Isokeraunic Levels (days lightning/year) 18 10 5 7





Page 27 of 27

1 Exposure D shall be used within 0.46 km (.2 mi) of the shoreline

2 Offshore station apply SAES-M-005

3 Rainfall intensity I

I = K

(t + b)

Freq. K

b SI units Customary units

5 yr 2443 96.2 27.5

10 yr 2941 115.8 24.9

25 yr 3420 134.6 23.7

50 yr 3810 150.0 21.0

100 yr 4300 169.3 20.0

4 Site classification shall be based on site-specific geotechnical investigation to be carried out as per requirements of Section 4 of SAES-A-113. Accordingly, the site classes indicated in the Appendices are to be used for preliminary structural analyses only when soil geotechnical data is not available.

* Minimum value for sites without many years of recorded data

NA Not applicable

- Data not available on document issue date

5 The PGA values shall be used directly for the potential liquefaction assessment.

Documents

Aramco Meterological Data