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

Thursday, October 21, 2010

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

SPC Severe Thunderstorm Watch 701
Thu, 21 Oct 2010 19:00:02 -0500

URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 701 NWS STORM PREDICTION CENTER NORMAN OK 235 PM CDT THU OCT 21 2010 THE NWS STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF PARTS OF SOUTHWEST OKLAHOMA PARTS OF WESTERN TEXAS EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 235 PM UNTIL 1000 PM 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 60 STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTHWEST OF ALTUS OKLAHOMA TO 30 MILES SOUTH OF FORT STOCKTON TEXAS. 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...AIR MASS CONTINUES TO DESTABILIZE AHEAD OF THE OUTFLOW FROM MORNING MCS AND IN ADVANCE OF THE AZ UPPER LOW. WITH MLCAPES NOW AROUND 1500 J/KG ALONG WITH INCREASINGLY FAVORABLE DEEP LAYER SHEAR WITH APPROACH OF JET MAX OVER NRN MEXICO...STRONG/SEVERE THUNDERSTORMS SHOULD DEVELOP ACROSS THE WATCH AREA THRU THE REMAINDER OF THE AFTERNOON. CONDITIONS FAVORABLE FOR SUPERCELLS WHICH WOULD ENHANCE BOTH LARGE HAIL AND WIND DAMAGE POTENTIAL. 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 24030. ...HALES

SPC Severe Thunderstorm Watch 701 Status Reports
Thu, 21 Oct 2010 19:00:04 -0500

  STATUS REPORT ON WW 701  SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 ENE MRF TO 25 ESE INK TO 20 NNE INK.  FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1961  ..STOPPKOTTE..10/21/10  ATTN...WFO...OUN...MAF...LUB...AMA...   STATUS REPORT FOR WS 701   SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS   OKC009-055-057-065-220040-  OK  .    OKLAHOMA COUNTIES INCLUDED ARE  BECKHAM              GREER               HARMON               JACKSON                 TXC003-033-045-075-087-101-103-107-115-125-129-135-153-155-165- 169-173-189-191-197-219-227-263-269-275-303-305-317-329-335-345- 371-383-415-433-445-461-220040-  TX  .    TEXAS COUNTIES INCLUDED ARE  ANDREWS              BORDEN              BRISCOE              CHILDRESS            COLLINGSWORTH       COTTLE               CRANE                CROSBY              DAWSON               DICKENS              DONLEY              ECTOR                FLOYD                FOARD               GAINES               GARZA                GLASSCOCK           HALE                 HALL                 HARDEMAN            HOCKLEY

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