

757 

WWUS20 KWNS 121705

SEL2

SPC WW 121705

INZ000-KYZ000-NCZ000-TNZ000-VAZ000-130000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 32

NWS STORM PREDICTION CENTER NORMAN OK

1205 PM EST FRI MAR 12 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EXTREME SOUTHEAST INDIANA

       CENTRAL AND EASTERN KENTUCKY

       EXTREME WESTERN NORTH CAROLINA

       EASTERN TENNESSEE

       EXTREME WESTERN VIRGINIA



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 1205 PM UNTIL

700 PM EST.



HAIL TO 1.5 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 50

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH OF

LEXINGTON KENTUCKY TO 50 MILES EAST OF CHATTANOOGA TENNESSEE.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU2).



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...ONGOING BANDS OF STORMS ACROSS NE AL/NW GA AND CENTRAL

KY WILL PERSIST INTO THE AFTERNOON WHILE SPREADING NNEWD IN ADVANCE

OF AN EJECTING MID LEVEL TROUGH AND ASSOCIATED SURFACE COLD FRONT.

A FEW CLOUD BREAKS...BOUNDARY LAYER DEWPOINTS IN THE LOW-MID

50S...AND COLD TEMPERATURES ALOFT WILL SUPPORT A THREAT FOR HAIL

WITH THE STRONGEST UPDRAFTS.  ADDITIONALLY...THE LINEAR

CONFIGURATION OF THE EXISTING STORMS AND STRENGTHENING LOW-MIDLEVEL

FLOW DURING THE AFTERNOON WILL ALSO SUPPORT A THREAT FOR DAMAGING

WINDS.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400. MEAN STORM

MOTION VECTOR 22035.





...THOMPSON

