Tornado Watch 34

Issued

Feb 5, 2008, 11:56 AM CST (17:56 UTC)

Expired

Feb 5, 2008, 7:00 PM CST

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Western Arkansas radar (KSRX), 151 km from the middle of the area, began a volume at 17:59 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Two or more tornadoes

50%

One or more EF2 to EF5 tornadoes

30%

Ten or more severe wind reports

40%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

50%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 156Feb 5, 10:18 AM CST
• Mesoscale Discussion 157Feb 5, 11:16 AM CST
• Mesoscale Discussion 159Feb 5, 2:15 PM CST
• Mesoscale Discussion 160Feb 5, 3:17 PM CST

000
WWUS20 KWNS 051758
SEL4  
SPC WW 051758
ARZ000-OKZ000-TXZ000-060100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 34
NWS STORM PREDICTION CENTER NORMAN OK
1200 PM CST TUE FEB 5 2008

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

       SOUTHWEST ARKANSAS
       SOUTHEAST OKLAHOMA
       NORTHEAST TEXAS

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM NOON UNTIL 700
PM CST.

TORNADOES...HAIL TO 2 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 NORTH AND SOUTH OF A LINE FROM 45 MILES WEST NORTHWEST OF
PARIS TEXAS TO 20 MILES EAST OF DE QUEEN ARKANSAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU4).

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...CONVECTION IS BEGINNING TO DEEPEN ALONG THE DRYLINE IN
N TX/SRN OK...AS WELL AS ALONG A PRE-FRONTAL BAND FROM NE TX INTO SE
OK.  THE PRE-FRONTAL BAND IS ASSOCIATED WITH A LEAD SHORTWAVE TROUGH
AND THE W EDGE OF THE STRONGER CAP...AND THIS ZONE OF ASCENT WILL
LIKELY SPREAD NEWD TOWARD SW/WRN AR THIS AFTERNOON.  GIVEN THE
PRESENCE OF 0-6 KM SHEAR IN EXCESS OF 60 KT...0-1 KM SRH NEAR 200
M2/S2...BOUNDARY LAYER DEWPOINTS IN THE LOW 60S...AND MLCAPE NEAR
1000 J/KG...A FEW SUPERCELLS WITH TORNADOES WILL BE POSSIBLE.  LARGE
HAIL AND DAMAGING WINDS CAN ALSO BE EXPECTED WITH THE STRONGER
STORMS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 23045.


...THOMPSON

Tornado Watches in Texas, 2008Tornado Watches in Oklahoma, 2008Tornado Watches in Arkansas, 2008Every tornado watch in 2008

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; radar from the NEXRAD Level II archive.