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Severe Thunderstorm Watch 437
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WW0437 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
Low Very Low

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL7

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 437
   NWS STORM PREDICTION CENTER NORMAN OK
   105 PM PDT SAT JUL 18 2015

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     FAR WESTERN ARIZONA
     FAR SOUTHEASTERN CALIFORNIA
     SOUTHEASTERN NEVADA
     SOUTHWESTERN UTAH

   * EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 105 PM UNTIL
     900 PM PDT.

   * PRIMARY THREATS INCLUDE...
     ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
     ISOLATED LARGE HAIL EVENTS TO 1 INCH IN DIAMETER POSSIBLE

   SUMMARY...THUNDERSTORMS NOW FORMING OVER SE CA AND SRN NV EXPECTED
   TO MERGE INTO ROUGHLY N-S BANDS...SOME OF WHICH WILL POSE A RISK FOR
   DAMAGING WIND AND MARGINALLY SEVERE HAIL. MORE ISOLATED STORMS WITH
   A WIND/HAIL THREAT MAY AFFECT NW AZ AND SW UT.

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75
   STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES EAST
   SOUTHEAST OF IMPERIAL CALIFORNIA TO 60 MILES NORTH NORTHEAST OF
   CALIENTE NEVADA.  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 436...

   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.
   A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION
   VECTOR 22025.


   ...CORFIDI
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Page last modified: July 19, 2015
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