

727 

WWUS20 KWNS 072013

SEL7

SPC WW 072013

COZ000-NMZ000-OKZ000-TXZ000-080400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 287

NWS STORM PREDICTION CENTER NORMAN OK

210 PM MDT FRI JUN 7 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHEAST COLORADO

  SOUTHWEST THROUGH NORTHEAST NEW MEXICO

  WESTERN AND CENTRAL PARTS OF THE OKLAHOMA PANHANDLE

  WESTERN AND CENTRAL PARTS OF THE TEXAS PANHANDLE



* EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 210 PM UNTIL

  1000 PM MDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 95

STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES NORTH

NORTHWEST OF CLAYTON NEW MEXICO TO 25 MILES SOUTHWEST OF EL PASO

TEXAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 286...



DISCUSSION...TSTMS NOW FORMING OVER THE MOUNTAINS OF S CNTRL CO AND

N CNTRL NM...AND OVER THE HIGHER TERRAIN OF SW NM...EXPECTED TO

INCREASE IN COVERAGE AND STRENGTH THROUGH EARLY EVE. ACTIVITY WILL

BE SUPPORTED BY SFC HEATING...WEAK UPSLOPE FLOW...AND ASCENT

ASSOCIATED WITH UPR IMPULSE MOVING SEWD FROM SRN CO. SUFFICIENT DEEP

SHEAR WILL EXIST FOR ORGANIZED STORMS AND POSSIBLY A COUPLE

SUPERCELLS WITH LARGE HAIL/LOCALLY DMGG WIND. OTHER STORMS MAY

STRENGTHEN INVOF LOW-LVL CONFLUENCE AXIS IN THE TX PANHANDLE. THE

ACTIVITY MAY GROW INTO SEVERAL SMALL CLUSTERS THAT EXTEND THE THREAT

FOR SVR WIND AND PERHAPS HAIL INTO EARLY TNGT TO POINTS FARTHER S

AND SE.



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 32020.





...CORFIDI

