Thursday, June 24, 2010

WATCHES: Severe Thunderstorm Watch Number 405

WWUS20 KWNS 241546
SEL5
SPC WW 241546
KYZ000-OHZ000-WVZ000-242200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 405
NWS STORM PREDICTION CENTER NORMAN OK
1145 AM EDT THU JUN 24 2010

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

EASTERN KENTUCKY
SOUTHERN OHIO
WEST VIRGINIA

EFFECTIVE THIS THURSDAY MORNING AND EVENING FROM 1145 AM UNTIL
600 PM EDT.

HAIL TO 1 INCH 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 60
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES EAST
SOUTHEAST OF PARKERSBURG WEST VIRGINIA TO 45 MILES WEST NORTHWEST
OF JACKSON KENTUCKY. FOR A COMPLETE DEPICTION OF THE WATCH SEE
THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

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.

OTHER WATCH INFORMATION...CONTINUE...WW 404...

DISCUSSION...SVR THREAT INCREASING ALONG/AHEAD OF COLD FRONT
CORRESPONDING TO RECENT INCREASE IN MULTICELLULAR/LINEAR
DEVELOPMENT...PER MESOSCALE DISCUSSION 1110. POTENTIAL EXPECTED TO
BECOME BETTER ORGANIZED AS FOREGOING AIR MASS CONTINUES TO
DESTABILIZE BENEATH SRN RIM OF FAVORABLE DEEP-LAYER FLOW.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.
A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION
VECTOR 27040.


...EDWARDS/CORFIDI

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