WATCHES: Severe Thunderstorm Watch Number 36

WWUS20 KWNS 272135
SEL6
SPC WW 272135
ARZ000-MOZ000-280300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 36
NWS STORM PREDICTION CENTER NORMAN OK
435 PM CDT SAT MAR 27 2010

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

CENTRAL AND EASTERN ARKANSAS
SOUTH CENTRAL MISSOURI

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 435 PM UNTIL
1000 PM CDT.

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 75
STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH OF WEST
PLAINS MISSOURI TO 35 MILES WEST OF MONTICELLO ARKANSAS. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU6).

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...WELL-DEFINED MID LEVEL TROUGH AND ASSOCIATED SURFACE
CYCLONE/COLD FRONT WILL CONTINUE TO MOVE EWD ACROSS MO/AR THROUGH
LATE EVENING...WITH A BAND OF STRONG ASCENT FOCUSING THUNDERSTORM
DEVELOPMENT INVOF THE COLD FRONT. STEEP LAPSE RATES AND COLD MID
LEVEL TEMPERATURES...ALONG WITH A SUPERCELL WIND PROFILE...WILL
SUPPORT STORMS CAPABLE OF PRODUCING LARGE HAIL FOR THE NEXT SEVERAL
HOURS. STORMS SHOULD GRADUALLY CONSOLIDATE INTO MORE OF A SOLID
LINE LATER THIS EVENING WITH AN INCREASED THREAT FOR DAMAGING WINDS.
THE RELATIVELY LIMITED LOW-LEVEL MOISTURE /BOUNDARY LAYER DEWPOINTS
IN THE MID 40S TO LOW 50S/ WILL TEMPER ANY TORNADO THREAT...DESPITE
THE STRONG LOW-LEVEL AND DEEP-LAYER SHEAR.

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 350. MEAN STORM
MOTION VECTOR 23040.

...THOMPSON

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