Cyclone ASHOBAA -Report-Dtd-30-6-2015.docx

Page1:Tropical cyclone ASHOBAA:

Tropical cyclone is broadly defined as: A localized, strong wind system formed with low pressure centre and a spiral arrangement of thunder storm producing heavy rain. Tropical cyclone besides causing Strong wind and thunder storm, will also cause damage tostorm surge and tornadoes (Rotating column ofairthat is in contact with both the surface of the earth and dense towering verticalcloud). The typical characteristic feature of Tropical cyclone is it will rapidly become weak when it strikes over land and gets disconnected from their primary energy source.

Generally North Indian Ocean cyclone used to occur between April and December, with the peak from May to November. After Hudhud, one of the prominent North Indian Ocean cyclone formed in 2015, is Cyclone ASHOBAA which existed from 7 June 2015 to 12 June 2015. On, June 04, 2015 Time: 16:00 PST, in East Central Arabian Sea, the persistence of clouds showed the well marked low pressure area/cyclonic circulation area. The wind speed over the said low pressure area of East central Arabian Sea has rapidly intensified into a storm. On Monday June 8, 2015, the IMD upgraded the storm to a Tropical Cyclone (01A). The name ASHOBAA has been suggested by SriLanka. The sustained wind speed of Cyclonic ASHOBAA during actives dates was 85 km/h (50 mph), the sustained Cyclonic storm during deep depression over Arabian Sea was 55 km/h (35 mph) and the sustained Cyclonic storm during depression over Bay of Bengal was: 45 km/h (30 mph). The Cyclonic storm ASHOBAA continued to track north-westwards for a while, before turning westwards and weakening due to moderate to high wind shear and land interaction.

The ongoing onset of southwest-monsoon caused a low pressure area in North Indian Ocean (Arabian Sea) accompanied by strong wind which has intensified into Cyclonic ASHBAA.

On, June 04, 2015 Time: 1600 PST, In Arabian Sea, the persistence of clouds showed the development of low pressure area / cyclonic circulation area On, June 05, 2015 Time: 1600 PST, the said low pressure area become well marked. In the next 24 hr the clouds cluster without any change in intensity, moved northward . On, June 06, 2015 Time: 1600 PST, the wind speed of the said low pressure area rapidly developed intensity. Further on 07th June 2015, the depression over eastcentral Arabian Sea moved North-northwest and lay centred at 1730 hours IST. On the same day ie, on 07th June 2015, the deep depression over eastcentral Arabian Sea has intensified further into a Tropical Cyclone (01A) and centred around Lat 18.0N and Long 67.5E about 750km south of Karachi. (Jun 8, 2015Time: 1100 PST). On Monday June 8, 2015, the IMD upgraded the storm to a Tropical Cyclone (01A). The name Ashobaa has been suggested by SriLanka.

On Monday June 8, 2015, the cyclonic storm (ASHOBAA) over eastcentral Arabian Sea moved slowly in north-westward and on 9 June 2015 at 08:30 IST lay centred over latitude 20.00 N and longitude 65.00 E. the cyclonic storm (ASHOBAA) exhibiter the tendency to intensify further into a severe cyclonic storm move initially northwestwards and further west-northwestwards towards Oman coast. The warm waters of the Arabian Sea allowed Ashobaa to strengthen through Wednesday, core of Ashobaa, with increased thunderstorms hit parts of northwestern Oman on thursday and friday. The sustained wind speed of Cyclonic ASHOBAA during actives dates was 85 km/h (50 mph), the sustained Cyclonic storm during deep depression over Arabian Sea was 55 km/h (35 mph) and the sustained Cyclonic storm during depression over Bay of Bengal was: 45 km/h (30 mph).

Emirates 24|7 from UAE has reported that The cyclonic storm ASHOBAA over east central Arabian Sea has moved in a north northwesterly direction and lay centred at 5.30am IST (4am UAE time) of 9 June 2015 near latitude 20.00 N and longitude 65.00 E, about 830km west of Mumbai, 570kms west-southwest of Veraval, 640kms eas-tsoutheast of Sur, Oman and 800kms east-southeast of Muscat (Oman).

Brief information of tracking of cyclonic storm (ASHOBAA) by Indian and Pakistan Meteorological Department Bulletins. Along with : i. Storm forecast Track and intensity of the system. ii. Storm Track Coordinates, prediction of path of Cyclone ASHOBAA which existed from 7 June 2015 to 12 June 2015 is given here under:

Indian Meteorological Department Bulletins:

MondayJune 82015:

SlIMD bulletinCyclone stormCentred at

DateTimeStorm- DirectionDateTimelatitudelongitude

18 -6-2015ARB01-2015-03north-northwest07 -06- 20152330 hrs IST16.50 N68.0 0 E

28 -6-2015ARB01-2015-05north-northwest08-06- 20150830 hrs IST17.9 0 N 67.2 0 E,

38 -6-2015ARB01-2015-06north-northwest08-06- 20151130 hrs IST17.90 N67.20E

48 -6-2015ARB01-2015-07north-northwest08-06- 20151430 hrs IST18.5 NNA

58 -6-2015ARB01-2015-08Stationary08-06- 20151730 hrs IST18.60N66.50E

68 -6-2015ARB01-2015-09northwest08-06- 20152030 hrs IST18.80N62.20E

Tues dayJune 92015:

SlIMD bulletinCyclone stormCentered at

DateTime DirectionDateTimelatitude longitude



119 -6-2015ARB01-2015-12north northwest09-06- 20150530 hrs IST20.00N65.00E



149 -6-2015ARB01-2015-16west-northwest09-06- 20151730 hrs IST21.00N63.00E


WednesdayJune 102015:

IMD bulletinCyclone stormCentered at

DateTimeStorm- DirectionDateTimelatitudelongitude




1910 -6-2015ARB01-2015-21Nearly- west10-06- 20150830 hrs IST21.300N61.800E

Note:ARB01-2015-21 is the last bulletin for this cyclonic storm (ASHOBAA)

Pakistan Meteorological Department Bulletins:

SundayJune 72015:

Weather WarningCyclone stormCentered at

SlDAteTimeDeep depressionDateTimelatitudelongitude

27-6-20152200 PSTArabian Sea deep depression07 -06- 20152200 PST15.5N 68.3E

MondayJune82015

SlDAteTimeDeep depressionDateTimelatitudelongitude

38-6-20151100 PSTArabian Sea deep depression increased into Tropical Cyclone (01A)07 -06- 2015NA18.0N67.5E

MondayJune82015

Weather Warning Cyclone stormCentered at

SlDateTimeStorm- DirectionDateTimelatitudelongitude

48-6-20151600 PSTnorth-northwest8-6-20151600 PST18.2N67.0E

58-6-20152200 PSTnorthwest8-6-20152200 PST18.6N66.5E

TuesdayJune92015





89-6-20152200 PSTwest-northwest9-6-20152200 PST21.3N63.0E

TuesdayJune102015



910-6-20151000 PSTwest-northwest10-6-20151000 PST21.3N61.5E

1010-6-20151600 PSTwest10-6-20151600 PST21.1N61.4E

1110-6-20152200 PSTwest10-6-20152200 PST20.9N61.2E

WednesdayJune112015


SlDateTimeStorm - DirectionDateTimelatitudelongitude

1211-6-20151000 PSTwest11-6-20151000 PST20.6N61.0E

1311-6-20151600 PSTwest11-6-20151600 PST20.8N60.5E

1411-6-20152200 PSTwest11-6-20152200 PST20.8N60.0E

Tropical Cyclone Ashobaa [ Archive Data:] Table-01

Storm forecast Track and intensity of the system [Storm Activity:09/06/2015-12/06/2015]

Date Time (IST)Lat0 ELong.0 EMax-Sustained Surface wind speed (Kmph)Gusting toCategory of cyclonic disturbance

09.06.2015083020.065.060-7080Cyclonic storm

09.06.2015113020.264.560-7080Cyclonic storm

09.06.2015173020.464.180-90100Cyclonic storm

09.06.201523302.0763.780-90100Cyclonic storm

10.06.2015053021.163.295-105120Severe Cyclonic storm

10.06.2015173021.462.395-105120Severe Cyclonic storm

11.06.2015053022.061.380-90100Cyclonic storm

11.06.2015173022.460.360-7080Cyclonic storm

11.06.2015053022.759.360-7080Cyclonic storm

11.06.2015173023.058.340-5060Deep depression

Source(www.rsmcnewdelhi.imd.gov.in)

Provided by:Regional specialised meteorological centre-tropical cyclones, new delhi


Storm Details: Storm Track Coordinates [Storm Activity:7/06/2015-7/12/2015]

Date TimeLatLonWind (mph)PressureStorm Type

Jun/07/201506 GMT15.568.540-999Tropical Cyclone



















Source:http://www.wunderground.com/


Storm Details: Storm Track Coordinates [Storm Activity:6/06/2015-7/12/2015]

DayDate TimeLatLonWind (mph) PressureStorm Type

TuesdayJun/09/201511.30.PM21.162.755Knots

WednesdayJun/10/201511.30.AM21.361.862Knots

WednesdayJun/10/201511.30.PM21.561.155Knots

ThursdayJun/11/201511.30.AM21.760.450Knots

ThursdayJun/11/201511.30.PM21.859.240KnotsDissipating

FridayJun/12/201511.30.PM21.656.625KnotsDissipating

Source:JTWC

Graph 1: Storm forecast Track and intensity of the system (max-sustained surface wind speed)

Graph 2: Storm Track Coordinates with respect to Wind Pressure Knots

TROPICAL CYCLONE: ASOBAA:

References:I. Bulletin :A. Issued by India Meteorological Department:i. IMD- Bulletin No (ARB01-2015-06)ii. IMD- Bulletin No.: ARB01/2015/07 [Ref: Facebook : Highland Complex Charkop Residents Group : Kandivali : Mumbai | Facebook]iii. IMD- Bulletin No (ARB01-2015-08)iv. IMD- Bulletin No (ARB01-2015-09)v. IMD- Bulletin No (ARB01-2015-10)vi. IMD- Bulletin No (ARB01-2015-11)vii. IMD- Bulletin No (ARB01-2015-12)viii. IMD- Bulletin No-14 (ARB012015)ix. IMD- Bulletin No-15 (ARB012015)x. IMD- Bulletin No-16 (ARB012015)xi. IMD- Bulletin No-17 (ARB012015)xii. IMD- Bulletin No-18 (ARB012015)xiii. IMD- Bulletin No-19 (ARB012015)xiv. IMD- Bulletin No-20 (ARB012015)xv. IMD- Bulletin No-21 (ARB012015)

II. Tropical cyclone formation-Progress alert/warning:A. Pakistan -Meterological Department- Weather warning: i. Pakistan -Meterological Department- Weather warning Report: (Weather Warning1-14)B. Joint Typhoon Warning Center (JTWC) Pearl Harbor,Hawaii-Alert :i. Joint Typhoon Warning Center (JTWC). "Tropical Cyclone Formation Alert WTIO21 Issued on 06 June 2015 at 1100 UTC". Joint Typhoon Warning Center (JTWC). Retrieved 7 June 2015.ii. "Tropical Cyclone Formation Alert - 22/2100z". Joint Typhoon Warning Center. Retrieved23 June 2015.iii. JTWC TC 01A.ONE Warning Number 2 Dated 7th June 2015 East Central Arabian Sea Depression As Per IMD. [Re- published by: Ring Road Weather Station]iv. JTWC TC 01A.ONE Warning Number 3 Dated 7th June 2015 @ 1800 UTC East Central Arabian Sea Depression As Per IMD Bulletin No. 3 [Re- published by: Ring Road Weather Station]

C. Ring Road Weather Station:

i. Ashok patel: 07/06/2015: East Central Arabian Sea System Is Now A Depression Morning 7th June 2015 As per IMDii. Ashok patel: 08/06/2015: JTWC TC 01A.ONE Warning Number 3 Dated 7th June 2015 @ 1800 UTC East Central Arabian Sea Depression As Per IMD Bulletin No. 3 iii. Ashok patel: 08/06/2015: Cyclonic Storm ASHOBAA Over East Central Arabian Sea on 8th June 2015iv. Daily Archives: 09/06/2015: Cyclonic Storm ASHOBAA Now Over Northwest Arabian Sea Evening Of 9th June 2015.

III. Tropical Weather Advisory for Indian Ocean (by NOAA):

i."Tropical Weather Advisory for Indian Ocean - 18/1800z". NOAA. Retrieved 21 June 2015.ii."Tropical Weather Advisory for Indian Ocean - 19/1800z". NOAA. Retrieved 21 June 2015.iii."Tropical Weather Advisory for Indian Ocean - 20/1800z". NOAA. Retrieved 21 June 2015.

IV. Special Tropical Weather Out look

A. Special Tropical Weather Outlook (Released by IMD):i."Tropical Weather Outlook - 20/0600z". India Meteorological Department. Retrieved 21 June 2015.ii."Tropical Weather Outlook - 20/1500z". India Meteorological Department. Retrieved 21 June 2015.iii."Tropical Weather Outlook - 21/0600z". India Meteorological Department. Retrieved 21 June 2015.iv. "Tropical Weather Outlook - 22/0600z". India Meteorological Department. Retrieved 22 June 15.

A. Special Tropical Weather Outlook (Released by USNO):Special Tropical Weather Outlook - 21/0600z". USNO. Retrieved 22 June 2015.Special Tropical Weather Outlook - 22/0600z". USNO. Retrieved 22 June 2015.Articles published in news papers:1.Eric Leister (June 12, 2015). "Rainstorm Ashobaa Slams Oman With Historic Flooding". Accuweather. Retrieved June 12, 20151.Madaan, Neha (11 June 2015). "Ashobaa stalls monsoons advance". The Times of India. The Times of India. Retrieved 11 June 20151.Rai, Bindu.Ashobaa latest: 'Storm' winds on UAE east coast tomorrow Pak cyclone alert Emirates24-7- Retrieved June 09, 2015 1.Rai, Bindu. "Ashobaa Latest: Gale winds to strike Muscat; Waterlogging in Fujairah". Emirates24-7-. Retrieved 11 June 2015.

Reports published in news papers:1.Fahad Al Mukrashi (June 12, 2015). "Heavy rains cause flooding in southern Oman". Muscat, Oman: Gulf News. Retrieved June 12, 2015

2."Widespread flooding as Ashobaa brings heavy rains to Oman". Muscat, Oman: The National. June 12, 2015. Retrieved June 12, 2015

3."Heavy rains throw life out of gear in Andhra and Telangana". Hyderabad, India: Nyoooz. June 21, 2015. Retrieved June 24, 2015

4."9 fishermen go missing". Hyderabad, India: Times of India. June 24, 2015. Retrieved June 24, 2015

5."Depression off Coast: All Districts on Alert". The New Indian Express. Retrieved June 21, 2015

6."Rains disrupt life in many parts of Odisha". Business Standard. Retrieved June 21, 2015

7."Flood-like situation in Gujarat due to heavy rains; 34 dead". Ahmedabad, India: News Nation. Press Trust of India. June 24, 2015. Retrieved June 24, 2015

8."Gujarat's Amreli battles worst flood in 90 years". Rajkot, India: Times of India. June 26, 2015. Retrieved June 27, 2015

9."Gujarat death toll touches 80, four lakh ex gratia for kin". Ahmedabad, India: Hinudstan Times. June 27, 2015. Retrieved June 27, 201510.Mahesh Langa (June 28, 2015). "Gujarat floods kill 7 lions, more than a dozen still missing". Ahmedabad, India: Hindustan Times. Retrieved June 28, 2015.

11."Rains Kill Four More Lions in Gujarat, Toll Climbs to 9". Ahmedabad, India: The New Indian Express. Press Trust of India. June 28, 2015. Retrieved June 28, 2015

12.EXCLUSIVE: Ashobaa predicted to make landfall on Oman coast, will not come towards Pakistan. Pakistan: ARY NEWS Web Desk June 9, 2015 Retrieved June 10, 2015

13.Cyclonic Storm "Ashobaa" forms in the Arabian Sea, heading toward Pakistan and Iran. Watchers http://thewatchers.adorraeli.com/2015/06/08/cyclonicstormashobaaformsinthearabianseaheadingtowardpakistanandiran/ Retrieved June 8, 2015

14.STORM TRACKER: Tropical Cyclone LIVE: http://tropicalcyclonelive.blogspot.in/

:ANNEXURES:Satellite images showing path of Tropical Cyclone ASHOBAA:June 7 2015:A. Deep Depression over east-central Arabian Seaii. JTWC TC 01A.ONE Warning Number 2 Dated 7th June 2015:[Bulletin No.: ARB01/2015/02]The depression over eastcentral Arabian Sea moved North-northwest and lay centred at 1730 hours IST of today, the 07th June 2015 near latitude 15.80 N and longitude 68.3 0 E, about 580 km southwest of Mumbai, 560 km south-southwest of Veraval and 1150 km southeast of Masirah Island (Oman). It would move north-northwestwards and intensify further into a deep depression during next 24 hrs.

NRL IR METEO-7-Satellite Image on 7th June @ 1500 UTC (08.30 pm. IST)

June 8, 2015:On June 8, 2015 at 2131 UTC (5:31 p.m. EDT). GPM (The Global Precipitation Measurement) core observatory had an excellent view of Tropical Cyclone Ashobaa. GPM's Microwave Imager (GMI) and Dual-Frequency Precipitation Radar (DPR) instruments showed that rain was falling in Ashobaa at a rate of over 70.5 mm (about 2.8 inches) per hour (red) in bands of storms west of the center of circulation. GPM's Ku band radar data showed that Very powerful storms were seen west of tropical cyclone ASHOBAA's center of circulation. GPM radar data indicated that some of these very intense storms will reach the amazing height of 21 km (13 miles).

Fig: 01: On June 8, GPM showed that rain was falling in Ashobaa at a rate of over 70.5 mm (about 2.8 inches) per hour (red) in bands of storms west of the center of circulation. Credit: NASA/JAXA/SSAI, Hal Pierce

June 9, 2015:MODIS instrument aboard NASA's Terra satellite when passed over the Arabian Sea on June 9 at 6:50 UTC (10:50 a.m. EDT) captured this visible image of tropical cyclone Ashobaa. At that time Ashobaa lacked an obvious eye and had an irregular shape. But the storms power was visible from its center. According to the Joint Typhoon Warning Center, the storm had maximum sustained winds of 92 kilometers (57 miles) per hour and gusts of 120 kilometers (74 miles) per hour.

Image:01: The MODIS instrument aboard NASA's Terra satellite captured this visible image of tropical cyclone Ashobaa over Oman on June 9 at 6:50 UTC (10:50 a.m. EDT).Forecasters expected Ashobaa to track westward over the next several days, with a potential landfall in Oman. The warm waters of the Arabian Sea will cause the storm to strengthen somewhat in coming days, but an influx of dry air from the north should counteract that as it approaches land.

June 10 2015:A. MODIS instrument aboard NASA's Aqua satellite:On June 10 at 09:00 UTC (5 a.m. EDT), the Moderate Resolution Imaging Spectroradiometer or MODIS instrument aboard NASA's Aqua satellite captured a visible image of Tropical Cyclone Ashobaa off the coast of Oman. NASA's Aqua satellite provided an overall look at Ashobaa's cloud extent. The MODIS image also showed that the northwestern quadrant of the tropical storm was already sweeping over eastern Oman.

June 11 2015:On June 11 at 09:35 UTC (5:35 a.m. EDT) the AIRS instrument aboard NASA's Aqua satellite gathered infrared data on the tropical cyclone as it neared Oman.

IMAGE: 01: [Image taken from AIRS instrument aboard NASA's Aqua satellite ON JUNE 11 2015 AT 09:35 UTC (5:35 A.M. EDT)]:

IMAGE:01: ON JUNE 11 AT 09:35 UTC (5:35 A.M. EDT) THE AIRS INSTRUMENT ABOARD NASA'S AQUA SATELLITE SHOWED WIND SHEAR WAS ELONGATING TROPICAL CYCLONE ASHOBAA BEFORE LANDFAL.

June 12 2015:

The deep depression on Monday June 8, 2015 over eastcentral Arabian Sea further intensified into a cyclonic storm "Ashobaa". Tropical Cyclonic Storm "Ashobaa" caused landfall along Oman's eastern coast early on June 12 12, 2015 (EDT), bringingrecord breaking rainfall, historic floods andstrong winds to Masirah Island and Sur. With 230 mm(9.05 inches) of rain in 24 hours.

IMAGE: 02: The MODIS instrument aboard NASA's Terra satellite captured this visible image of tropical cyclone Ashobaa over Oman on June 12 at 7:15 UTC (3:15 a.m. EDT) making landfall along the east coast of Oman.

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Cyclone ASHOBAA -Report-Dtd-30-6-2015.docx