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Friday, May 31, 2013

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

05/31/2013 04:30 PM EDT

WW 0262 Status Updates
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    STATUS FOR WATCH 0262 HAS NOT BEEN ISSUED YET  
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05/31/2013 04:30 PM EDT

WW 262 TORNADO OK 312030Z - 010500Z
WW 0262 Thumbnail Image
    URGENT - IMMEDIATE BROADCAST REQUESTED 
TORNADO WATCH NUMBER 262 
 
NWS STORM PREDICTION CENTER NORMAN OK 
330 PM CDT FRI MAY 31 2013 
 
THE NWS STORM PREDICTION CENTER HAS ISSUED A 
 
* TORNADO WATCH FOR PORTIONS OF 
CENTRAL AND NORTHEAST OKLAHOMA 
 
* EFFECTIVE THIS FRIDAY AFTERNOON FROM 330 PM UNTIL 
MIDNIGHT CDT. 
 
...THIS IS A PARTICULARLY DANGEROUS SITUATION... 
 
* PRIMARY THREATS INCLUDE... 
SEVERAL INTENSE TORNADOES LIKELY  NUMEROUS VERY 
LARGE HAIL EVENTS TO 4 INCHES IN DIAMETER LIKELY 
NUMEROUS DAMAGING WIND GUSTS LIKELY WITH SEVERAL 
SIGNIFICANT  GUSTS TO 80 MPH POSSIBLE 
 
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 
65 STATUTE  MILES EAST AND WEST OF A LINE FROM 20 
MILES WEST NORTHWEST OF  BARTLESVILLE OKLAHOMA TO 
30 MILES EAST OF WICHITA FALLS TEXAS. 
 
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE 
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2) 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS... 
 
REMEMBER...
 
A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR 
TORNADOES AND 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.
 
OTHER WATCH INFORMATION...
CONTINUE...WW 260...WW 261... 
 
DISCUSSION...
 
AN EXTREMELY UNSTABLE AIR MASS HAS DEVELOPED ACROSS 
MUCH OF CENTRAL/EASTERN OK THIS AFTERNOON.  THIS 
WILL LIKELY RESULT  IN RAPID DEVELOPMENT OF SEVERE 
THUNDERSTORMS THIS AFTERNOON AND  EVENING ALONG THE 
DRYLINE OVER WEST-CENTRAL OK...AND ALONG A WEAK 
BOUNDARY EXTENDING NORTHEASTWARD INTO NORTHEAST OK. 
DISCRETE  SUPERCELLS CAPABLE OF EXTREMELY LARGE HAIL 
AND DAMAGING TORNADOES  ARE POSSIBLE. 
DAMAGING WINDS WILL BECOME AN INCREASING THREAT 
THROUGH THE EVENING. 
 
AVIATION...
 
TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL 
SURFACE AND ALOFT TO 4 INCHES. EXTREME TURBULENCE AND 
SURFACE  WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI 
WITH MAXIMUM TOPS TO  600. MEAN STORM MOTION VECTOR 
26025.      ...HART    
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05/31/2013 03:37 PM EDT

WW 0261 Status Updates
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    STATUS FOR WATCH 0261 HAS NOT BEEN ISSUED YET  
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05/31/2013 03:16 PM EDT

WW 0260 Status Updates
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    STATUS FOR WATCH 0260 HAS NOT BEEN ISSUED YET  
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05/31/2013 12:47 PM EDT

Public Severe Weather Outlook
  PUBLIC SEVERE WEATHER OUTLOOK 
NWS STORM PREDICTION CENTER NORMAN OK 
 
1146 AM CDT FRI MAY 31 2013 
 
...SEVERE WEATHER OUTBREAK POSSIBLE OVER PARTS OF THE 
SOUTHERN  PLAINS TO THE OZARK PLATEAU LATE THIS 
AFTERNOON INTO TONIGHT... 
 
THE NWS STORM PREDICTION CENTER IN NORMAN OK IS 
FORECASTING THE  DEVELOPMENT OF A FEW STRONG TO VIOLENT 
TORNADOES...VERY LARGE  HAIL...AND INTENSE DAMAGING 
WINDS OVER PARTS OF THE SOUTHERN PLAINS  TO THE OZARK 
PLATEAU LATE THIS AFTERNOON INTO TONIGHT. 
 
THE AREAS MOST LIKELY TO EXPERIENCE THIS ACTIVITY INCLUDE 
  • SOUTHEAST KANSAS 
  • SOUTHWEST MISSOURI 
  • CENTRAL TO NORTHEAST OKLAHOMA 
 
ELSEWHERE...
 
SEVERE STORMS ARE ALSO POSSIBLE ACROSS THE UPPER/MIDDLE 
MISSISSIPPI VALLEY AND THE MIDWEST... 
 
SCATTERED STORMS WILL FORM ALONG A DRYLINE OVER PARTS OF 
CENTRAL  OKLAHOMA BETWEEN 4 AND 7 PM. THESE STORMS WILL 
BECOME RAPIDLY SEVERE  AND BE CAPABLE OF PRODUCING A 
FEW STRONG TO VIOLENT  TORNADOES...
 
SCATTERED VERY LARGE HAIL ABOVE BASEBALL SIZE AND 
ISOLATED SEVERE WIND GUSTS ABOVE 60 MPH. DURING THE 
 
EVENING...
 
NUMEROUS STORMS WILL LIKELY DEVELOP TO THE NORTHEAST 
ALONG  A COLD FRONT ACROSS THE OZARK PLATEAU AND CONGEAL 
INTO FAST-MOVING  LINES WITH A RISK FOR POTENTIALLY 
WIDESPREAD DAMAGING WINDS WITH  ISOLATED GUSTS ABOVE 
HURRICANE-FORCE...
IN ADDITION TO LARGE HAIL AND  A COUPLE OF STRONG 
TORNADOES.    STATE AND LOCAL EMERGENCY MANAGERS ARE 
MONITORING THIS DEVELOPING  SITUATION. THOSE IN THE 
THREATENED AREA ARE URGED TO REVIEW SEVERE  WEATHER 
SAFETY RULES AND TO LISTEN TO RADIO...TELEVISION...AND 
NOAA  WEATHER RADIO FOR POSSIBLE WATCHES...
WARNINGS...AND STATEMENTS LATER  TODAY.  
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