WW 537 SEVERE TSTM KS NE 282305Z – 290600Z
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 537
NWS STORM PREDICTION CENTER NORMAN OK
605 PM CDT SAT JUL 28 2012
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTH-CENTRAL AND NORTHEAST KANSAS
CENTRAL AND SOUTHEAST NEBRASKA
EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 605 PM
UNTIL 100 AM CDT.
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
GRAND ISLAND NEBRASKA TO 25 MILES SOUTH OF CONCORDIA KANSAS. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU7).
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 535...WW 536...
DISCUSSION...TSTMS ARE EXPECTED TO INCREASE IN COVERAGE AND
INTENSITY THIS EVENING WITHIN A HOT...DEEPLY MIXED BOUNDARY LAYER
ALONG AND W OF A WARM FRONT EXTENDING FROM W OF BBW TO N OF CNK.
AIR MASS INVOF OF BOUNDARY IS MODERATELY UNSTABLE WITH MLCAPE OF
1500-2500+ J/KG WHICH WILL SUPPORT VIGOROUS UPDRAFT GROWTH. WHEN
COUPLED WITH MODEST DEEP-LAYER SHEAR...SETUP WILL FAVOR THE
DEVELOPMENT OF HIGH-BASED...MULTICELL OR PULSE CLUSTERS W OF WARM
FRONT...AND PERHAPS MARGINAL SUPERCELLS ALONG IMMEDIATE COOL SIDE OF
BOUNDARY. DAMAGING WINDS WILL BE THE PRIMARY HAZARD...THOUGH SEVERE
HAIL IS ALSO POSSIBLE.
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 550. MEAN STORM
MOTION VECTOR 28010.
...MEAD
via SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0537.html
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