

108 

WWUS20 KWNS 232215

SEL8

SPC WW 232215

KSZ000-OKZ000-240600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 438

NWS STORM PREDICTION CENTER NORMAN OK

515 PM CDT TUE JUL 23 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  CENTRAL AND SOUTHEAST KANSAS

  NORTHERN AND EASTERN OKLAHOMA



* EFFECTIVE THIS TUESDAY AFTERNOON AND WEDNESDAY MORNING FROM 515

  PM UNTIL 100 AM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL SIGNIFICANT DAMAGING WIND GUSTS TO 75 MPH POSSIBLE

  SEVERAL VERY LARGE HAIL EVENTS TO 3 INCHES IN DIAMETER POSSIBLE

  A FEW TORNADOES POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 95

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 75 MILES NORTHWEST

OF MEDICINE LODGE KANSAS TO 40 MILES SOUTH OF GROVE OKLAHOMA.

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 435...WW 436...WW 437...



DISCUSSION...SCATTERED THUNDERSTORMS ARE EXPECTED TO INTENSIFY OVER

PORTIONS OF CENTRAL KS AND NORTHEAST OK EARLY THIS EVENING...AND

SPREAD SOUTHEASTWARD ACROSS THE WATCH.  A VERY UNSTABLE AIR MASS IS

IN PLACE...ALONG WITH FAVORABLE VERTICAL SHEAR.  LARGE SUPERCELL

THUNDERSTORMS ARE POSSIBLE...CAPABLE OF DAMAGING WINDS AND LARGE

HAIL.  STORMS ARE EXPECTED TO BUILD SOUTHWARD ACROSS NORTHERN OK

THROUGH THE EVENING.



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

TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65

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

MOTION VECTOR 29030.





...HART

