Tornado Watch for Eastern Oklahoma & Western Arkansas


A tornado watch is in effect just south and east of Oklahoma City. I can see the clouds bubbling just south and east of here. Here is the latest information on this.

URGENT – IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 180
NWS STORM PREDICTION CENTER NORMAN OK
350 PM CDT FRI APR 22 2011

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

NORTHWEST ARKANSAS
EASTERN OKLAHOMA

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 350 PM UNTIL
1000 PM CDT.

TORNADOES…HAIL TO 4 INCHES IN DIAMETER…THUNDERSTORM WIND
GUSTS TO 70 MPH…AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES SOUTH OF ARDMORE
OKLAHOMA TO 40 MILES NORTH NORTHWEST OF FAYETTEVILLE ARKANSAS.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU0).

REMEMBER…A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.

OTHER WATCH INFORMATION…CONTINUE…WW 178…WW 179…

DISCUSSION…THUNDERSTORMS ARE EXPECTED TO RAPIDLY FORM ALONG COLD
FRONT ADVANCING SOUTHEASTWARD INTO EASTERN OK THIS EVENING. OTHER
MORE ISOLATED STORMS ARE POSSIBLE SOUTHWARD ALONG THE DRYLINE NEAR
THE RED RIVER. VERY UNSTABLE CONDITIONS /MLCAPE OVER 3500 J/KG/
ALONG WITH SUFFICIENT VERTICAL SHEAR WILL POSE A THREAT OF
SUPERCELLS CAPABLE OF VERY LARGE HAIL AND DAMAGING WINDS. LOW LEVEL
VERTICAL SHEAR IS NOT PARTICULARLY STRONG…BUT SUFFICIENT GIVEN THE
DEGREE OF INSTABILITY TO WARRANT A THREAT OF ISOLATED TORNADOES.

AVIATION…TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 4 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 27030.

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