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2016 Severe Storm Thread


jaxjagman

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Indeed SPC elects another severe box for AR/LA in addition to the first one West Tenn. Winds are veering west of I-55 and instability did not fully recover in TN/KY. Plains would have recovered but Dixie is more fickle.

 

Meanwhile I like MD 306 noting the increasing tornado threat in northeast Mississippi. Outflow sits over northeast MS keeping winds a bit backed, and instability is increasing. Storms have been trying to form MS, bumping into what is left of the cap. Soon the cap will erode and storms will become established. Figure SPC will tornado box northeast MS soon.

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URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 73
   NWS STORM PREDICTION CENTER NORMAN OK
   915 PM EDT THU MAR 31 2016

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * TORNADO WATCH FOR PORTIONS OF
     EASTERN ALABAMA
     WESTERN AND NORTHERN GEORGIA
     FAR SOUTHWEST NORTH CAROLINA
     SOUTHERN EAST TENNESSEE

   * EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 915 PM
     UNTIL 500 AM EDT.

   * PRIMARY THREATS INCLUDE...
     A COUPLE TORNADOES POSSIBLE
     SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY
     ISOLATED LARGE HAIL EVENTS TO 1 INCH IN DIAMETER POSSIBLE

   SUMMARY...THUNDERSTORMS IN CLUSTERS...SHORT LINES...AND A FEW
   DISCRETE SUPERCELLS EXPECTED TO MOVE / DEVELOP GENERALLY EAST INTO
   WATCH AREA THROUGH THE OVERNIGHT. SOME STORMS WILL BE CAPABLE OF
   LOCALLY DAMAGING WIND...TORNADOES...AND MARGINALLY SEVERE HAIL.

   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
   MILES EAST AND WEST OF A LINE FROM 55 MILES EAST SOUTHEAST OF
   TROY ALABAMA TO 40 MILES EAST NORTHEAST OF CHATTANOOGA TENNESSEE.
    FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU3).

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SEVERE WEATHER STATEMENT  
NATIONAL WEATHER SERVICE HUNTSVILLE AL  
905 PM CDT THU MAR 31 2016  
 
ALC083-089-103-010230-  
/O.CON.KHUN.TO.W.0006.000000T0000Z-160401T0230Z/  
MADISON AL-LIMESTONE AL-MORGAN AL-  
905 PM CDT THU MAR 31 2016  
 
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR  
SOUTHWESTERN MADISON...SOUTHEASTERN LIMESTONE AND CENTRAL MORGAN  
COUNTIES...  
 
AT 905 PM CDT...A CONFIRMED LARGE AND EXTREMELY DANGEROUS TORNADO WAS  
LOCATED OVER PRICEVILLE...OR NEAR HARTSELLE...MOVING NORTHEAST AT 30  
MPH.  
 
THIS IS A PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!  
 
HAZARD...DAMAGING TORNADO.  
 
SOURCE...EMERGENCY MANAGEMENT CONFIRMED TORNADO.  

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EVERE WEATHER STATEMENT  
NATIONAL WEATHER SERVICE HUNTSVILLE AL  
910 PM CDT THU MAR 31 2016  
 
ALC083-089-103-010230-  
/O.CON.KHUN.TO.W.0006.000000T0000Z-160401T0230Z/  
MADISON AL-LIMESTONE AL-MORGAN AL-  
910 PM CDT THU MAR 31 2016  
 
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR  
SOUTHWESTERN MADISON...SOUTHEASTERN LIMESTONE AND CENTRAL MORGAN  
COUNTIES...  
 
AT 910 PM CDT...A CONFIRMED LARGE AND EXTREMELY DANGEROUS TORNADO  
WAS LOCATED JUST EAST OF PRICEVILLE...OR 8 MILES NORTHEAST OF  
HARTSELLE...MOVING NORTHEAST AT 30 MPH.  
 
THIS IS A PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!  
 
HAZARD...DAMAGING TORNADO.  
 
SOURCE...EMERGENCY MANAGEMENT CONFIRMED TORNADO.  
 

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still on ground moving into populated areas now

LC083-089-010230-  
/O.CON.KHUN.TO.W.0006.000000T0000Z-160401T0230Z/  
MADISON AL-LIMESTONE AL-  
917 PM CDT THU MAR 31 2016  
 
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR  
SOUTHWESTERN MADISON AND SOUTHEASTERN LIMESTONE COUNTIES...  
 
AT 916 PM CDT...A CONFIRMED LARGE AND EXTREMELY DANGEROUS TORNADO  
WAS LOCATED JUST WEST OF TRIANA...OR 8 MILES SOUTH OF  
MADISON...MOVING NORTHEAST AT 35 MPH.  
 
THIS IS A PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!  
 
HAZARD...DAMAGING TORNADO.  
 
SOURCE...EMERGENCY MANAGEMENT CONFIRMED TORNADO.  
 
IMPACT...YOU ARE IN A LIFE-THREATENING SITUAT

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Alabama tornado was on the outflow boundary. Mississippi storms took some time to get completely organized, perhaps some warm mid-levels before the front arrived. OFB extended into AL where temps/dews were slightly lower. However upstairs temperatures promoted more CAPE in AL. Increasing CAPE over an OFB = tornado risk. Glad nobody was seriously hurt. May the power restoration crews be safe getting the lights on again.

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