Tornado Watch 13

Issued

Jan 12, 2006, 6:53 PM CST (00:53 UTC)

Expired

Jan 13, 2006, 2:00 AM CST

In force

7 hr

Issued by

the Storm Prediction Center

• Mesoscale Discussion 43Jan 12, 5:26 PM CST
• Mesoscale Discussion 45Jan 12, 9:52 PM CST
• Mesoscale Discussion 46Jan 12, 11:10 PM CST
• Mesoscale Discussion 47Jan 13, 1:08 AM CST

000 
WWUS20 KWNS 130057
SEL3  
SPC WW 130057
ARZ000-LAZ000-OKZ000-TXZ000-130800-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 13
NWS STORM PREDICTION CENTER NORMAN OK
655 PM CST THU JAN 12 2006

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       WESTERN AND CENTRAL ARKANSAS
       NORTHWEST LOUISIANA
       EXTREME EASTERN OKLAHOMA
       NORTHEAST TEXAS

EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 655 PM UNTIL
200 AM CST.

TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE MILES
EAST AND WEST OF A LINE FROM 15 MILES NORTHEAST OF HARRISON
ARKANSAS TO 20 MILES SOUTH SOUTHWEST OF LONGVIEW TEXAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU3).

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.

DISCUSSION...THUNDERSTORMS ARE EXPECTED TO DEVELOP BY ABOUT 02Z NEAR
OR W OF AN AXIS FROM FORT SMITH AR TO PARIS TX AS THE SURFACE COLD
FRONT OVERTAKES THE STALLED DRY LINE...AND STRONG/DEEP ASCENT
OVERSPREADS ERN OK IN ADVANCE OF AN ESEWD MOVING MID LEVEL TROUGH. 
00Z SOUNDINGS AND SHORT TERM MODEL FORECASTS AGREE WITH MUCAPE
VALUES AROUND 1000 J/KG IN THE WARM SECTOR...AND VERTICAL SHEAR
PROFILES THAT ARE FAVORABLE FOR SUPERCELLS.  AN ISOLATED TORNADO OR
TWO COULD OCCUR WITH THE MORE DISCRETE/INTENSE STORMS THAT WILL BE
BASED VERY NEAR THE SURFACE.  HOWEVER...STORMS SHOULD EVOLVE INTO
MORE OF A SQUALL LINE OVERNIGHT WITH LARGE HAIL AND DAMAGING WINDS
AS THE MOST COMMON SEVERE STORM THREATS.

AVIATION...TORNADOES AND 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
400. MEAN STORM MOTION VECTOR 25040.


...THOMPSON

362,0912 320,0932 320,0961 362,0942

Tornado Watches in Arkansas, 2006Tornado Watches in Texas, 2006Tornado Watches in Oklahoma, 2006Every tornado watch in 2006

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.