SEVERE THUNDERSTORM WATCH NUMBER 37 - 20090227

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wb5rmg
Posts: 348
Joined: Fri Sep 05, 2008 9:47 pm
First Name: Alan
Last Name: Sieg
City: Madison
State: AL
Mail Zip Code: 35758
License Class: Extra
Location: Sullivan @ Browns Ferry in Madison, AL
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SEVERE THUNDERSTORM WATCH NUMBER 37 - 20090227

Post by wb5rmg » Fri Feb 27, 2009 10:25 am

SEL7

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 37
NWS STORM PREDICTION CENTER NORMAN OK
845 AM CST FRI FEB 27 2009

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

PARTS OF NORTHERN AND CENTRAL ALABAMA
PARTS OF SOUTHERN ARKANSAS
PARTS OF NORTHERN LOUISIANA
PARTS OF NORTHERN AND CENTRAL MISSISSIPPI

EFFECTIVE THIS FRIDAY MORNING AND AFTERNOON FROM 845 AM UNTIL 300
PM CST.

HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 25 MILES WEST OF EL
DORADO ARKANSAS TO 45 MILES SOUTH SOUTHEAST OF BIRMINGHAM
ALABAMA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

DISCUSSION...THUNDERSTORMS WILL INCREASE IN NUMBER AND INTENSITY EWD
ACROSS THE WATCH AREA WHERE STEEP LAPSE RATES AND 40-50KT OF DEEP
LAYER SHEAR ARE IN PLACE. SUPERCELLS ARE LIKELY ALONG WITH SHORT
LINE SEGMENTS/BOWS GIVEN THE ENVIRONMENT. PRIMARY THREAT WILL BE
LARGE HAIL AND WIND DAMAGE BUT AS HEATING TAKES PLACE A TORNADO
THREAT WILL INCREASE DURING THE AFTERNOON AND PORTIONS OF THE WATCH
AREA MAY NEED TO BE UPGRADED.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM
MOTION VECTOR 26035.


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###### WB5RMG is Alan Sieg ## http://wb5rmg.wordpress.com ######
ARRL/ARES Assistant Emergency Coordinator, Madison County Alabama

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