

209 

WWUS20 KWNS 271938

SEL8

SPC WW 271938

KSZ000-280300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 378

NWS STORM PREDICTION CENTER NORMAN OK

230 PM CDT THU JUN 27 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  KANSAS



* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 230 PM UNTIL

  1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  NUMEROUS DAMAGING WIND GUSTS EXPECTED WITH A FEW SIGNIFICANT

    GUSTS TO 90 MPH POSSIBLE

  SEVERAL LARGE HAIL EVENTS LIKELY WITH A FEW VERY LARGE HAIL

    EVENTS TO 3 INCHES IN DIAMETER POSSIBLE

  A FEW TORNADOES POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 140

STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTHWEST OF

CONCORDIA KANSAS TO 65 MILES SOUTHEAST OF WICHITA KANSAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU8).



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 376...WW 377...



DISCUSSION...RAPID INTENSE CONVECTIVE DEVELOPMENT IS EXPECTED WITHIN

THE NEXT FEW HOURS ALONG A WEAK COLD FRONT ADVANCING SOUTHWARD

THROUGH PARTS OF NORTH CENTRAL INTO SOUTHWEST KANSAS.  THE STRONGEST

ACTIVITY IS EXPECTED TO FORM NEAR THE INTERSECTION OF THE FRONT AND

OUTFLOW FROM MORNING STORMS...ACROSS NORTH CENTRAL KANSAS... BEFORE

GROWING UPSCALE AND SPREADING SOUTHEASTWARD ALONG THE OUTFLOW

BOUNDARY THROUGH CENTRAL AND EASTERN KANSAS.  WITH TEMPERATURES NEAR

100F TO THE SOUTHWEST OF THE AFORMENTIONED BOUNDARIES...THE BOUNDARY

LAYER IS NOW VERY DEEPLY MIXED WITH LARGE TEMPERATURE-DEW POINT

SPREADS.  ALONG WITH STEEP MID-LEVEL LAPSE RATES AND SIZABLE CAPE IN

THE PRESENCE OF STRONG DEEP LAYER SHEAR...BENEATH 30-40

NORTHWESTERLY 500 MB FLOW...THE ENVIRONMENT APPEARS CONDUCIVE TO

SUPERCELLS AND ORGANIZED STORM DEVELOPMENT CAPABLE OF PRODUCING VERY

LARGE HAIL...AT LEAST INITIALLY...ALONG WITH VERY STRONG DOWNBURSTS.

 CONSOLIDATING COLD POOLS SHOULD TEND TO ACCELERATE

SOUTH/SOUTHEASTWARD WITH A BROADER SCALE DAMAGING WIND THREAT INTO

EARLY EVENING.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 80

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 32035.





...KERR

