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MONTHLY CLIMATE REVIEW. MARCH 2014. 500-hPa. Cyclone Hellen (Mozambique Channel). CONTENTS. * Tropics - ENSO [Neutral] - MJO * Extra-tropics (& Sea Ice) *Verification of JFM & March 2014 Outlooks * Drought * Selected Weather Events * Outlooks (April & AMJ 2014 & MDO). I. The Tropics. - PowerPoint PPT Presentation
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MONTHLY CLIMATE REVIEW
MARCH 2014
Cyclone Hellen (Mozambique Channel)
500-hPa
CONTENTS
*Tropics-ENSO [Neutral]
-MJO
*Extra-tropics (& Sea Ice)
*Verification of JFM & March 2014 Outlooks
*Drought
*Selected Weather Events
*Outlooks (April & AMJ 2014 & MDO)
I. The Tropics
LATEST MONTHLY INDICES
LATEST MONTHLY INDICES
850-hPa Wind
H
RecentWesterlies, esp.
mid-month
850-hPa Wind
200-hPa Wind
H
HH
SST & Anomalies Subsurface
(6th)
SSTA Predictions for Nino 3.4 Region
NMME & inputs
CPC Consolidation
CFSv2
CPC/IRI
OLR & Anomalies
MJO (March 17, 31 Overviews)
- MJO remains active with E.P.* entering Indian Ocean; though indicators areincreasingly incoherent due to destructive interference with slowly evolving atmospheric and oceanic conditions in western Pacific.
- Dynamical model MJO index forecasts diverge considerably for next 2 weeks.Some models weaken MJO as it interacts with the low frequency base state, whileothers indicate a more robust Indian Ocean MJO event.
- Statistical models generally favor continued MJO activity.
- MJO favors enhanced (suppressed) convection over western & central Indian Ocean(Maritime Continent and western Pacific) during period; also tending to oppose ongoing convection across the west-central Pacific associated with increasing ocean temperatures.
*E.P. = Enhanced Phase
Longitude
200-hPa Velocity Potential Anomalies (5°S-5°N)
Positive anomalies (brown shading) indicate unfavorable conditions for precipitation
Negative anomalies (green shading) indicate favorable conditions for precipitationMJO
strengthens
Fasterpropagation
speeds – atmoKelvin waves?
Slowerpropagation
speeds
Littlepropagation?
Indo-Pacificwarm pool
region
Ensemble GFS (GEFS) MJO Forecast
RMM1 and RMM2 values for the most recent 40 days and forecasts from the ensemble Global Forecast System (GEFS) for the next 15 days
light gray shading: 90% of forecasts dark gray shading: 50% of forecasts
Yellow Lines – 20 Individual Members Green Line – Ensemble Mean
The ensemble GFS forecast indicates no additional eastward propagation of the MJO
signal.
II. The Extra-Tropics (and Sea Ice)
Northern Hemisphere
500-hPa SLP
Southern Hemisphere
500-hPa SLP
Global Temperatures
King Salmon (52F)March 1
(record high)*
*Weekly Weather & Crop Bulletin (April 8)
Global Precipitation
ITCZ
E.P. MJO
S.P. MJO
E.P. = Enhanced
Phase
S.P. = Suppressed
Phase
Seattle record:9.44” (254%);
previous: 8.40” (1950)*
*Weekly Weather & Crop Bulletin (April 8)
PrecipitationDepartures clearly related to orography (much more
so than PNP)
Featureless
Hawaiian Rainfall (March 2014)Dry start followed by trade wind strengthening
Total PNP (% of normal)
Weekly Weather & Crop Bulletin (April 8)
1.9”
3.4”4.0”
3.8”
18.7”
54
~135
16092
M
+
+: 6.46” (March 8-9)Oahu Forest Nat’l Wildlife Refuge
Sea Ice
Arctic Antarctic
https://nsidc.org/arcticseaicenews/
*Annual maximum extent on March 21
2014 Arctic max is 5th lowest in record (1978-2014)
*Annual minimum extent on February 23
2014 Antarctic min is 4th highest in record (1978-2014)
-2 -1
L
http://projects.kmi.open.ac.uk/role/moodle/pluginfile.php/712/mod_page/content/1/u116_2_f004i.jpg
Significant increase incoverage of multi-year ice
https://nsidc.org/arcticseaicenews/
III. Verification of JFM & March 2014 Outlooks
IV. Drought
March 4 April 1*
* Okay, so data cutoff extends 8 hours into April (12z April 1st) !
DROUGHT MONITOR
http://www.wcc.nrcs.usda.gov/ftpref/support/water/westwide/snowpack/wy2014/snow1404.gif
Monthly-Average Stream flow for the month of year
Soil Moisture Anomaly
CPC
NLDAS
V. Selected Weather Events
http://upload.wikimedia.org/wikipedia/commons/7/74/Gillian_2014_track.png
Track of Cyclone Gillian
March 6-26, 201410-min winds: 125 mph1-min winds: 160 mph
Highest Gusts: 180 mphMinimum SLP: 937 hPa
JavaBali E. Timor
PNG
Gillian also affected searchfor missing
Malaysian Airlines Flight 370
X
ChristmasIsland
BorneoSumatra
Java
Gillian
“X”Approximate location of Christmas Island
(10.5S, 105.6E)X
http://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Gillian_Mar_23_2014_0645Z.jpg/459px-Gillian_Mar_23_2014_0645Z.jpg
Track of Cyclone Hellen
March 27-April 1, 201410-min winds: 145 mph1-min winds: 155 mph
Minimum SLP: 925-hPa
Madagascar
Mozambique
Tanzania
http://en.wikipedia.org/wiki/File:Hellen_2014_track.png
http://upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Hellen_Mar_30_2014_0720Z.jpg/515px-Hellen_Mar_30_2014_0720Z.jpg
Explosive Deepening of Cyclone Hellen over the Mozambique Channel
Symmetrical &Intense CDO
(150 miles)
Eye: 12 mi
Hazel Landslide/Oso Mudslide in Washington state March 22, 2014
http://en.wikipedia.org/wiki/File:Oso_landslide_%28WSP%29.pngWashington State Patrol
{1500 feet long, 4400 feet wide and 30-40 feet deep}
ACIS
VI. Outlooks for April & AMJ 2014 & MDO
APRIL TEMP APRIL PRCP
AMJ TEMP AMJ PRCP
THE END
??!
http://roflmouse.com/wp-content/uploads/2010/08/funny-animal-pictures-cute-duckling-scam.jpg
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