

554 

WWUS20 KWNS 260221

SEL8

SPC WW 260221

ARZ000-OKZ000-260800-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 8

NWS STORM PREDICTION CENTER NORMAN OK

920 PM CDT WED MAR 25 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  CENTRAL..NORTHERN AND WESTERN ARKANSAS

  SOUTHEASTERN AND EXTREME EASTERN OKLAHOMA



* EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 920 PM

  UNTIL 300 AM CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55

STATUTE MILES EITHER SIDE OF A LINE FROM 20 MILES NORTH NORTHWEST

OF ARDMORE OKLAHOMA TO 30 MILES EAST NORTHEAST OF BATESVILLE

ARKANSAS.  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 7...



DISCUSSION...BKN BAND OF STG-SVR TSTMS -- NOW MOSTLY BEHIND SFC COLD

FRONT AND/OUT OUTFLOW-REINFORCED BAROCLINIC ZONE -- WILL CONTINUE TO

POSE THREAT FOR LARGE HAIL AND OCNL GUSTS NEAR SVR LIMITS.  OVERALL

SVR THREAT IS EXPECTED TO DIMINISH WITH TIME LATE IN WW PERIOD AS

LLJ VEERS...COLD-FRONTAL SURGE CONTINUES...AND WARM SECTOR

DIABATICALLY STABILIZES.



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 28030.





...EDWARDS



985 

WWUS20 KWNS 260221

SEL8

SPC WW 260221

ARZ000-OKZ000-260800-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 8

NWS STORM PREDICTION CENTER NORMAN OK

920 PM CDT WED MAR 25 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  CENTRAL..NORTHERN AND WESTERN ARKANSAS

  SOUTHEASTERN AND EXTREME EASTERN OKLAHOMA



* EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 920 PM

  UNTIL 300 AM CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55

STATUTE MILES EITHER SIDE OF A LINE FROM 20 MILES NORTH NORTHWEST

OF ARDMORE OKLAHOMA TO 30 MILES EAST NORTHEAST OF BATESVILLE

ARKANSAS.  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 7...



DISCUSSION...BKN BAND OF STG-SVR TSTMS -- NOW MOSTLY BEHIND SFC COLD

FRONT AND/OUT OUTFLOW-REINFORCED BAROCLINIC ZONE -- WILL CONTINUE TO

POSE THREAT FOR LARGE HAIL AND OCNL GUSTS NEAR SVR LIMITS.  OVERALL

SVR THREAT IS EXPECTED TO DIMINISH WITH TIME LATE IN WW PERIOD AS

LLJ VEERS...COLD-FRONTAL SURGE CONTINUES...AND WARM SECTOR

DIABATICALLY STABILIZES.



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 28030.





...EDWARDS

