

834 

WWUS20 KWNS 081928

SEL8

SPC WW 081928

COZ000-KSZ000-OKZ000-TXZ000-090300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 148

NWS STORM PREDICTION CENTER NORMAN OK

125 PM MDT WED MAY 8 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  EASTERN COLORADO

  WESTERN KANSAS

  THE OKLAHOMA OKLAHOMA

  NORTHWEST PARTS OF THE TEXAS PANHANDLE



* EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 125 PM

  UNTIL 900 PM MDT.



* PRIMARY THREATS INCLUDE...

  NUMEROUS LARGE HAIL EVENTS LIKELY WITH A FEW VERY LARGE HAIL

    EVENTS TO 2 INCHES IN DIAMETER POSSIBLE

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

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

GOODLAND KANSAS TO 10 MILES EAST OF DALHART TEXAS.  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.



&&



DISCUSSION...TSTMS NOW FORMING OVER THE HIGHER TERRAIN OF SE CO

EXPECTED TO MOVE/EXPAND ENE THROUGH THE AFTN...SUPPORTED BY LOW-LVL

ENE FLOW AND DIFFLUENT SW WINDS ALOFT. COOL MID-LVL TEMPS AND STEEP

LOW MID-LVL LAPSE RATES SUGGEST RISK FOR SVR HAIL AS STORMS ORGANIZE

INTO ONE OR TWO BROKEN BANDS.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 24025.





...CORFIDI

