Tornado Watch 57

Issued

Mar 21, 2005, 5:40 PM CST (23:40 UTC)

Expired

Mar 22, 2005, 1:00 AM CST

In force

7 hr

Issued by

the Storm Prediction Center

The Shreveport radar (KSHV), 165 km from the middle of the area, began a volume at 23:40 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.

• Mesoscale Discussion 324Mar 21, 2:59 PM CST
• Mesoscale Discussion 323Mar 21, 3:14 PM CST
• Mesoscale Discussion 326Mar 21, 5:10 PM CST
• Mesoscale Discussion 328Mar 21, 8:29 PM CST
• Mesoscale Discussion 330Mar 21, 11:09 PM CST

000
WWUS20 KWNS 212338
SEL7  
SPC WW 212338
ARZ000-LAZ000-OKZ000-TXZ000-220700-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 57
NWS STORM PREDICTION CENTER NORMAN OK
540 PM CST MON MAR 21 2005

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

       SOUTHWEST ARKANSAS
       NORTHWEST LOUISIANA
       EXTREME SOUTHEAST OKLAHOMA
       EASTERN TEXAS

EFFECTIVE THIS MONDAY AFTERNOON AND TUESDAY MORNING FROM 540 PM
UNTIL 100 AM CST.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE MILES
EAST AND WEST OF A LINE FROM 60 MILES NORTH NORTHWEST OF TEXARKANA
ARKANSAS TO 80 MILES SOUTHEAST OF COLLEGE STATION TEXAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU7).

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 56...

DISCUSSION...SCATTERED THUNDERSTORMS ARE EXPECTED TO CONTINUE TO
SLOWLY INCREASE IN COVERAGE AND INTENSITY THIS EVENING FROM
SOUTHWEST AR INTO EAST TX...AHEAD OF APPROACHING UPPER TROUGH. 
MOIST/UNSTABLE CONDITIONS COMBINED WITH FAVORABLE VERTICAL SHEAR
PROFILES WILL PROMOTE THE RISK OF SUPERCELL STORMS CAPABLE OF LARGE
HAIL...DAMAGING WINDS...AND TORNADOES.

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 25035.


...HART

341,0931 294,0941 294,0963 341,0953

Tornado Watches in Texas, 2005Tornado Watches in Arkansas, 2005Tornado Watches in Louisiana, 2005Every tornado watch in 2005

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.