

261 

WWUS20 KWNS 280247

SEL5

SPC WW 280247

ARZ000-OKZ000-281000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 35

NWS STORM PREDICTION CENTER NORMAN OK

945 PM CDT THU MAR 27 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  NORTHERN AND WESTERN ARKANSAS

  EAST CENTRAL OKLAHOMA



* EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 945 PM

  UNTIL 500 AM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

  A FEW DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70

STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH

NORTHWEST OF FLIPPIN ARKANSAS TO 25 MILES SOUTH OF POTEAU

OKLAHOMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 34...



DISCUSSION...TSTMS EXPECTED TO INCREASE THROUGH LATER TONIGHT OVER

WW REGION AS SE-MOVING COLD FRONT CONTINUES TO OVERTAKE MORE SLOWLY

PROGRESSIVE DRY LINE. WHILE MAIN MID-MS VLY SHORTWAVE TROUGH WILL

CONTINUE TO MOVE NEWD AWAY FROM REGION...LARGE SCALE ASCENT WILL BE

ENHANCED BY THE CONTINUED ENE MOVEMENT OF TRAILING/WEAKER UPR

IMPULSE NOW OVER CNTRL OK. AREA SOUNDING DATA SUGGEST THAT AMPLE

MID-LVL LAPSE RATES/CLOUD-LAYER SHEAR WILL EXIST FOR SVR HAIL WITH

ANY STRONGER/MORE SUSTAINED UPDRAFTS...ESPECIALLY GIVEN INCREASING

PW OVER TIME AND WITH EWD EXTENT INTO AR.



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 500. MEAN STORM

MOTION VECTOR 26035.





...CORFIDI

