URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 161
NWS STORM PREDICTION CENTER NORMAN OK
340 PM CDT FRI APR 13 2012
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTH CENTRAL AND SOUTHEAST KANSAS
EXTREME WESTERN MISSOURI
EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 340 PM UNTIL
1000 PM CDT.
HAIL TO 2 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 80
STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES SOUTHWEST OF
CHANUTE KANSAS TO 45 MILES EAST NORTHEAST OF EMPORIA KANSAS. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU1).
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 160...
DISCUSSION...STORMS ARE INCREASING INTO EXTREME SERN KS WITHIN A
MODERATELY UNSTABLE AIR MASS WITH MLCAPE OF 1500-2000 J/KG.
ADDITIONAL STORMS ARE EXPECTED TO DEVELOP ALONG THE WRN EDGE OF THE
LOW LEVEL MOISTURE GRADIENT AS THIS RETREATS NWWD THIS EVENING.
LOCAL VWP PROFILES EXHIBIT VEERING WITH HEIGHT AND SUFFICIENT DEEP
LAYER SHEAR TO SUPPORT ORGANIZED CONVECTION INCLUDING A FEW
SUPERCELLS. PRIMARY THREAT WILL BE LARGE HAIL AND STRONG WIND
GUSTS...ALTHOUGH AN ISOLATED TORNADO CANNOT BE RULED OUT ESPECIALLY
THIS EVENING.
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 22025.
No comments:
Post a Comment