Tornado Watch 215

Issued

Apr 26, 2011, 1:44 PM CDT (18:44 UTC)

Expired

Apr 27, 2011, 12:13 AM CDT

In force

10 hr

Issued by

the Storm Prediction Center

Particularly dangerous situation

Yes

Largest hail expected

4 in

Strongest gust expected

70 kt

The Shreveport radar (KSHV), 167 km from the middle of the area, began a volume at 18:46 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

95%

One or more EF2 to EF5 tornadoes

90%

Ten or more severe wind reports

90%

One or more gusts of 65 knots or more

80%

Ten or more severe hail reports

95%

One or more hailstones of 2 inches or more

95%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 589Apr 26, 1:11 PM CDT
• Mesoscale Discussion 597Apr 26, 3:59 PM CDT
• Mesoscale Discussion 599Apr 26, 5:00 PM CDT
• Mesoscale Discussion 601Apr 26, 6:17 PM CDT
• Mesoscale Discussion 602Apr 26, 6:43 PM CDT
• Mesoscale Discussion 604Apr 26, 7:08 PM CDT
• Mesoscale Discussion 608Apr 26, 8:53 PM CDT
• Mesoscale Discussion 611Apr 26, 11:33 PM CDT

879 
WWUS20 KWNS 261847
SEL5
SPC WW 261847
ARZ000-LAZ000-OKZ000-TXZ000-270300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 215
NWS STORM PREDICTION CENTER NORMAN OK
145 PM CDT TUE APR 26 2011

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

       SOUTHERN AND CENTRAL ARKANSAS
       NORTHERN LOUISIANA
       EXTREME SOUTHEAST OKLAHOMA
       NORTHEAST AND NORTH CENTRAL TEXAS

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 145 PM UNTIL
1000 PM CDT.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...

DESTRUCTIVE TORNADOES...LARGE HAIL TO 4 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 80 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 45 MILES NORTHWEST OF WACO
TEXAS TO 60 MILES NORTHEAST OF EL DORADO ARKANSAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU5).

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 213...WW 214...

DISCUSSION...SEVERE THUNDERSTORMS ARE EXPECTED TO RAPIDLY DEVELOP
THIS AFTERNOON OVER NORTHEAST TX...SPREADING ACROSS THE WATCH AREA
THROUGH EARLY EVENING.  OTHER INTENSE STORMS WILL DEVELOP BY EARLY
EVENING OVER NORTHEAST TX AND ALSO SPREAD EASTWARD.  BOTH AREAS OF
SEVERE STORMS WILL LIKELY INCLUDE DISCRETE SUPERCELLS CAPABLE OF
VERY LARGE HAIL...DAMAGING WINDS...AND TORNADOES.  WIND FIELDS WILL
BE STRENGTHENING THROUGH THE EVENING...AND STORMS TRACKING NEAR THE
EXISTING BOUNDARY FROM TX INTO AR WILL HAVE ENHANCED SHEAR AND THE
RISK OF STRONG/LONG-LIVED TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 4 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
600. MEAN STORM MOTION VECTOR 25035.


...HART

Tornado Watches in Texas, 2011Tornado Watches in Arkansas, 2011Tornado Watches in Louisiana, 2011Every tornado watch in 2011

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.