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WWUS20 KWNS 080407

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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 743

NWS STORM PREDICTION CENTER NORMAN OK

1105 PM CDT SUN AUG 7 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL AND EASTERN KANSAS



EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 1105 PM UNTIL

500 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 110

STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES NORTHEAST OF

CONCORDIA KANSAS TO 50 MILES SOUTHEAST OF SALINA KANSAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU3).



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 739...WW 740...WW

741...WW 742...



DISCUSSION...TSTMS THAT RECENTLY FORMED IN A W-E BAND ACROSS N

CNTRL/NE KS EXPECTED TO PERSIST AND POSSIBLY DEVELOP INTO AN MCS

WITH SMALL EMBEDDED BOWS GIVEN HI PW VALUES...SIZABLE

DCAPE...CONTINUED STRENGTHENING OF SSWLY LLJ...AND MODERATE WNW MID

LVL FLOW.  HEAVY RAIN ALSO WILL BE A THREAT AS MAIN CELLS MOVE MORE

OR LESS PARALLEL TO MAIN AXIS OF CONVECTIVE BAND.  NOTE: WW 741 THAT

COVERS CNTRL AND ERN NEB WILL BE EXTENDED SWD TO INCLUDE THOSE PARTS

OF N CNTRL KS IN THE GID /HASTINGS NEB/ NWS CWA LIKELY TO BE

AFFECTED BY THESE STORMS.



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 30025.





...CORFIDI

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