WW 26 SEVERE TSTM OK TX 040100Z - 040800Z
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 26
NWS STORM PREDICTION CENTER NORMAN OK
700 PM CST FRI FEB 3 2012
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTHEAST OKLAHOMA
NORTHEAST TEXAS
EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 700 PM
UNTIL 200 AM CST.
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 70
STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES NORTHWEST OF
DE QUEEN ARKANSAS TO 25 MILES SOUTHWEST OF DALLAS TEXAS. 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.
OTHER WATCH INFORMATION...CONTINUE...WW 25...
DISCUSSION...BROKEN BAND OF TSTMS FROM DUA TO MWL HAS RECENTLY
INTENSIFIED LIKELY DUE TO INCREASED LOW-LEVEL UPLIFT ASSOCIATED WITH
THE ARRIVAL OF COLD FRONT FROM THE NW/W. 00Z FWD SOUNDING IS
REPRESENTATIVE OF THE AMBIENT ENVIRONMENT...FEATURING A RATHER DEEP
LOW-LEVEL MOIST LAYER AND STEEP MIDLEVEL LAPSE RATES WITH MLCAPE OF
1000-1500 J/KG. KINEMATIC ENVIRONMENT WILL CONTINUE TO FAVOR
UPDRAFT ROTATION GIVEN 40-50 KT OF DEEP-LAYER SHEAR...AND A BRIEF
TORNADO REMAINS POSSIBLE AS CONVECTIVE LINE INTERACTS WITH WARM
FRONT PRESENT ACROSS SERN OK. HOWEVER...GIVEN THE PREDOMINANT
LINEAR CONVECTIVE MODE AND TENDENCY FOR THE LLJ TO WEAKEN THROUGH
04/06Z ACROSS THE WATCH AREA...EXPECT SEVERE HAIL AND DAMAGING WIND
GUSTS TO BE THE PRIMARY HAZARDS.
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 500. MEAN STORM
MOTION VECTOR 25025.
...MEAD
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