WW 483 SEVERE TSTM CO KS OK TX 072235Z – 080500Z
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 483
NWS STORM PREDICTION CENTER NORMAN OK
435 PM MDT WED AUG 7 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
PORTIONS OF SOUTHEAST COLORADO
SOUTHWESTERN KANSAS
THE OKLAHOMA PANHANDLE
THE TEXAS PANHANDLE
* EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 435 PM
UNTIL 1100 PM MDT.
* PRIMARY THREATS INCLUDE...
SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2
INCHES IN DIAMETER POSSIBLE
SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80
STATUTE MILES EAST AND WEST OF A LINE FROM 65 MILES NORTHWEST OF
GARDEN CITY KANSAS TO 10 MILES SOUTHEAST OF AMARILLO TEXAS. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU3).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 482...
DISCUSSION...THUNDERSTORMS DEVELOPING OVER THE HIGHER TERRAIN
CONTINUE TO INCREASE IN COVERAGE AND SHIFT SLOWLY EASTWARD TOWARD
LOWER ELEVATIONS...WITHIN A BACKGROUND ENVIRONMENT OF MARGINAL SHEAR
AND MODEST INSTABILITY IN CONJUNCTION WITH WEAK LOW-LEVEL
EASTERLY/UPSLOPE FLOW. SOME INCREASE IN SHEAR IS ANTICIPATED THIS
EVENING AS THE EASTERLY LOW-LEVEL JET STRENGTHENS -- WHICH COULD
SUPPORT UPSCALE GROWTH OF CONVECTION AND AN INCREASE IN DAMAGING
WIND THREAT. UNTIL THEN...ISOLATED SEVERE STORMS CAPABLE OF
PRODUCING LARGE HAIL AND LOCALLY DAMAGING GUSTS CAN BE EXPECTED.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 26025.
...GOSS
via SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0483.html
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