Compact News: NOAA's National Weather Service SPC Tornado/Severe Thunderstorm Watches Update

Tuesday, October 5, 2010

NOAA's National Weather Service SPC Tornado/Severe Thunderstorm Watches Update

SPC Severe Thunderstorm Watch 691
Tue, 05 Oct 2010 19:00:11 -0500

URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 691 NWS STORM PREDICTION CENTER NORMAN OK 1155 AM MST TUE OCT 5 2010 THE NWS STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF PARTS OF SOUTHERN AND CENTRAL ARIZONA EFFECTIVE THIS TUESDAY MORNING AND EVENING FROM 1155 AM UNTIL 700 PM MST. HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE MILES EAST AND WEST OF A LINE FROM 70 MILES EAST NORTHEAST OF PRESCOTT ARIZONA TO 100 MILES SOUTHWEST OF TUCSON ARIZONA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1). 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...THUNDERSTORMS ARE INCREASING IN NUMBER AND INTENSITY ACROSS SCENTRAL AZ WITH THE APPROACH OF S/WV TROUGH AND ASSOCIATED MID LEVEL JET FROM SCAL. WITH MLCAPES TO 1500 J/KG AND SHEAR FROM 35-40KT A FEW SEVERE THUNDERSTORMS INCLUDING THE POTENTIAL FOR SUPERCELLS WILL DEVELOP N AND E ACROSS THE WATCH AREA THIS AFTERNOON. PRIMARY THREAT WILL BE LARGE HAIL AND BRIEF DAMAGING WINDS. ISOLATED TORNADO OR FUNNEL CLOUD WILL ALSO BE POSSIBLE ASSOCIATED WITH ANY SUPERCELL THAT CAN DEVELOP. 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 450. MEAN STORM MOTION VECTOR 22030. ...HALES

SPC Severe Thunderstorm Watch 691 Status Reports
Tue, 05 Oct 2010 19:00:13 -0500

  STATUS REPORT ON WW 691  THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.  ..ROGERS..10/05/10  ATTN...WFO...PSR...TWC...FGZ...   STATUS REPORT FOR WS 691   SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS   AZC007-013-019-021-023-025-060040-  AZ  .    ARIZONA COUNTIES INCLUDED ARE  GILA                 MARICOPA            PIMA                 PINAL                SANTA CRUZ          YAVAPAI                THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY.  PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.

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