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000 

WWUS20 KWNS 202352

SEL5

SPC WW 202352

KSZ000-MOZ000-210700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 625

NWS STORM PREDICTION CENTER NORMAN OK

650 PM CDT MON AUG 20 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHEAST AND EAST CENTRAL KANSAS

       NORTHWEST AND WEST CENTRAL MISSOURI



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 650 PM UNTIL

200 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 100

STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTHEAST OF

FALLS CITY NEBRASKA TO 50 MILES SOUTH SOUTHEAST OF MANHATTAN

KANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 621...WW 622...WW

623...WW 624...



DISCUSSION...TSTM CLUSTERS/SUPERCELLS IN SE NEB AND N CNTRL KS

EXPECTED TO MOVE/DEVELOP GENERALLY E AND ESE...RESPECTIVELY...INTO

VERY UNSTABLE AIR ACROSS NE KS/NW MO LATER THIS EVENING.  DEEP SHEAR

IS EXPECTED TO LESSEN WITH TIME AND WITH EWD EXTENT.  BUT PRESENCE

OF EXISTING STORMS...NOCTURNAL STRENGTHENING OF SWLY LLJ AND VERY

MOIST BOUNDARY LAYER AIR SUGGEST THAT A THREAT WILL EXIST FOR WET

MICROBURSTS AND POSSIBLY SVR HAIL THROUGH EARLY TUESDAY INTO THE LWR

MO VLY.



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 29025.





...CORFIDI

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