National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
WWUS20 KWNS 211854
SEL5
SPC WW 211854
ARZ000-LAZ000-OKZ000-TXZ000-220300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 205
NWS STORM PREDICTION CENTER NORMAN OK
150 PM CDT TUE MAY 21 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF
  SOUTHERN ARKANSAS
  NORTHERN LOUISIANA
  SOUTHEAST OKLAHOMA
  NORTHEAST TEXAS

* EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 150 PM UNTIL
  1000 PM CDT.

* PRIMARY THREATS INCLUDE...
  SEVERAL TORNADOES WITH A FEW INTENSE TORNADOES POSSIBLE
  NUMEROUS DAMAGING WIND GUSTS LIKELY WITH A FEW SIGNIFICANT GUSTS
    TO 80 MPH POSSIBLE
  SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2
    INCHES IN DIAMETER POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 95 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 45 MILES NORTHWEST OF
LONGVIEW TEXAS TO 50 MILES EAST SOUTHEAST OF EL DORADO ARKANSAS.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU5).

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 201...WW 202...WW
203...WW 204...

DISCUSSION...RAPID INTENSIFICATION OF THUNDERSTORM ACTIVITY APPEARS
LIKELY ACROSS NORTH CENTRAL TEXAS DURING THE NEXT COUPLE OF
HOURS...WITH CONVECTION CONSOLIDATING AND GROWING UPSCALE INTO A
SEVERE MESOSCALE CONVECTIVE SYSTEM.  SHORTLY THEREAFTER...DAMAGING
WIND POTENTIAL IS EXPECTED TO INCREASE...WITH AN EASTWARD
ACCELERATION INTO THE ARKLATEX BY EARLY EVENING.
MEANWHILE...DECREASING INHIBITION WITHIN A MOIST BOUNDARY LAYER
AHEAD OF THE DEVELOPING CONVECTIVE SYSTEM MAY ALLOW DISCRETE
SUPERCELLS TO FORM IN THE PRESENCE OF STRONG SHEAR...WHICH WILL ALSO
BE ACCOMPANIED BY THE RISK FOR TORNADOES AND LARGE HAIL.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 27040.


...KERR