WW 232 SEVERE TSTM IA KS MO 280230Z – 281000Z
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 232
NWS STORM PREDICTION CENTER NORMAN OK
930 PM CDT MON MAY 27 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
EXTREME SOUTHWEST IOWA
EXTREME NORTHEAST KANSAS
NORTHWEST MISSOURI
* EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 930 PM
UNTIL 500 AM CDT.
* 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
A FEW TORNADOES POSSIBLE
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES WEST
SOUTHWEST OF FALLS CITY NEBRASKA TO 25 MILES SOUTH OF KIRKSVILLE
MISSOURI. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).
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 230...WW 231...
DISCUSSION...THE EARLIER SUPERCELL CLUSTER NEAR THE KS/NEB BORDER
CONTINUES TO SPREAD EWD WHILE GRADUALLY EVOLVING INTO A LARGER MCS.
GIVEN THE EXPECTED UPSCALE GROWTH AND LIKELY COLD POOL
FORMATION...THE MCS SHOULD MOVE EWD/ESEWD ALONG THE RESIDUAL
FRONT/OUTFLOW INTO NW MO OVERNIGHT. A CONTINUED INFLUX OF
MOISTURE/INSTABILITY ON THE NOSE OF A DEVELOPING LLJ WILL SUPPORT
THE RISK FOR DAMAGING WINDS/LARGE INTO THE OVERNIGHT HOURS.
MEANWHILE..THE TORNADO THREAT SHOULD CONTINUE TO DIMINISH COMPARED
TO AREAS FARTHER W...THOUGH THE PRESENCE OF THE RESIDUAL BOUNDARY
AND FAIRLY STRONG LOW-LEVEL SHEAR SUGGEST THAT THE RISK OF A BRIEF
TORNADO IS NOT COMPLETELY NEGLIGIBLE.
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 550. MEAN STORM
MOTION VECTOR 28030.
...THOMPSON
via SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0232.html
Be First to Comment