Tuesday, September 14, 2010

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

SPC Severe Thunderstorm Watch 663
Tue, 14 Sep 2010 22:42:03 -0500


WW 0663 Thumbnail Image

  URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 663 NWS STORM PREDICTION CENTER NORMAN OK 1040 PM CDT TUE SEP 14 2010  THE NWS STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF          NORTHERN AND WESTERN KANSAS        SOUTH CENTRAL NEBRASKA  EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 1040 PM UNTIL 500 AM CDT.  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 80 STATUTE MILES EAST AND WEST OF A LINE FROM 10 MILES NORTH NORTHWEST OF KEARNEY NEBRASKA TO 40 MILES EAST OF GARDEN CITY KANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).  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 661...WW 662...  DISCUSSION...NW KS SUPERCELL COMPLEX/MCS EXPECTED TO MOVE GENERALLY SEWD...WITH EMBEDDED SUPERCELLS OCCASIONALLY MOVING MORE SSEWD.  INCREASING LOW LVL MOISTURE WITH SWD EXTENT MAY COMPENSATE FOR SOMEWHAT WEAKER MID LVL FLOW TO SUPPORT CONTINUED SUPERCELL DEVELOPMENT.  OTHER STORMS MAY FORM IN STRENGTHENING WAA ZONE E OF COMPLEX ACROSS S CNTRL NEB.  WHILE DMGG WIND AND SVR HAIL SHOULD BE THE PRIMARY SVR THREATS...A TORNADO OR TWO CANNOT BE RULED OUT GIVEN MODERATE/MOIST LLJ.  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 31025.   ...CORFIDI  
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SPC Severe Thunderstorm Watch 663 Status Reports
Tue, 14 Sep 2010 22:42:11 -0500


WW 0663 Thumbnail Image

  STATUS FOR WATCH 0663 HAS NOT BEEN ISSUED YET 
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