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Monday, June 3, 2013

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

06/03/2013 08:00 PM EDT

WW 0273 Status Updates
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    STATUS REPORT ON WW 273 
 
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. 
 ..EDWARDS..06/03/13    ATTN...WFO...DDC...OUN...AMA... 
 
STATUS REPORT FOR WS 273 
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 
 
KSC007-025-033-047-055-057-067-069-081-083-097-119-129-151-175- 
187-189-032340-    KS   . 
 
KANSAS COUNTIES INCLUDED ARE 
BARBER               CLARK               COMANCHE 
EDWARDS              FINNEY              FORD 
GRANT                GRAY                HASKELL 
HODGEMAN             KIOWA               MEADE 
MORTON               PRATT               SEWARD 
STANTON              STEVENS 
 
OKC003-007-009-011-015-031-039-043-045-055-057-059-065-075-093- 
129-139-149-151-153-032340-    OK   . 
 
OKLAHOMA COUNTIES INCLUDED ARE 
ALFALFA              BEAVER              BECKHAM 
BLAINE               CADDO               COMANCHE 
CUSTER               DEWEY               ELLIS 
GREER                HARMON              HARPER 
JACKSON              KIOWA               MAJOR 
ROGER MILLS          TEXAS               WASHITA               


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06/03/2013 08:00 PM EDT

WW 273 SEVERE TSTM KS OK TX 032030Z - 040400Z
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    URGENT - IMMEDIATE BROADCAST REQUESTED  SEVERE THUNDERSTORM 
WATCH NUMBER 273 
NWS STORM PREDICTION CENTER NORMAN OK 
330 PM CDT MON JUN 3 2013 
 
THE NWS STORM PREDICTION CENTER HAS ISSUED A 
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
SOUTHWEST KANSAS 
WESTERN OKLAHOMA INCLUDING THE CENTRAL AND EASTERN PANHANDLE 
CENTRAL AND EASTERN TEXAS PANHANDLE 
 
* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 
330 PM UNTIL    1100 PM CDT. 
 
* PRIMARY THREATS INCLUDE... 
SEVERAL DAMAGING WIND GUSTS TO 70 MPH LIKELY 
SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE 
 
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG 
AND 85  STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES
 NORTHWEST OF  DODGE CITY KANSAS TO 25 MILES WEST OF ALTUS 
OKLAHOMA.  FOR A  COMPLETE DEPICTION OF THE WATCH SEE THE 
ASSOCIATED WATCH OUTLINE  UPDATE (WOUS64 KWNS WOU3). 
 
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...
HIGH-BASED STORMS HAVE DEVELOPED FROM SERN CO INTO SWRN  KS AHEAD 
OF A WEAK VORTICITY MAX WITHIN A DEEPLY MIXED AIR MASS 
CHARACTERIZED BY STEEP LAPSE RATES.  THERMODYNAMIC PROFILES ARE 
FAVORABLE FOR STRONG DOWNDRAFTS AND HAIL WITH INITIAL STORMS. 
NWP  MODEL GUIDANCE INCLUDING CONVECTION-ALLOWING ENSEMBLES SHOW 
STRONG  AGREEMENT THROUGH THE EVENING HOURS THAT STORMS WILL GRADUALLY 
GENERATE A MESOSCALE COLD POOL AND GROW UPSCALE INTO SEWD MOVING 
 MCS...WITH POTENTIAL FOR MORE ORGANIZED DAMAGING WIND GUSTS ALONG 
THE LEADING EDGE OF THE COMPOSITE OUTFLOW BOUNDARY. 
 
AVIATION...
 
A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT 
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 
60  KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM  MOTION VECTOR 29025.      ...WEISS    
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