Tornado Watch 201

Issued

May 21, 2013, 10:26 AM CDT (15:26 UTC)

Expired

May 21, 2013, 8:00 PM CDT

In force

10 hr

Issued by

the Storm Prediction Center

Largest hail expected

3 in

Strongest gust expected

70 kt

The Dallas/Ft Worth radar (KFWS), 74 km from the middle of the area, began a volume at 15:29 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

40%

One or more EF2 to EF5 tornadoes

30%

Ten or more severe wind reports

80%

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

95%

• Mesoscale Discussion 747May 21, 8:12 AM CDT
• Mesoscale Discussion 749May 21, 10:09 AM CDT
• Mesoscale Discussion 752May 21, 1:19 PM CDT
• Mesoscale Discussion 753May 21, 1:35 PM CDT
• Mesoscale Discussion 756May 21, 3:18 PM CDT
• Mesoscale Discussion 760May 21, 5:54 PM CDT

588 
WWUS20 KWNS 211532
SEL1  
SPC WW 211532
OKZ000-TXZ000-220000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 201
NWS STORM PREDICTION CENTER NORMAN OK
1025 AM CDT TUE MAY 21 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  SOUTHERN OKLAHOMA
  NORTHERN AND CENTRAL TEXAS

* EFFECTIVE THIS TUESDAY MORNING AND EVENING FROM 1025 AM UNTIL
  700 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 3
    INCHES IN DIAMETER POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 95 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTH SOUTHWEST OF
ABILENE TEXAS TO 35 MILES SOUTH SOUTHEAST OF PARIS TEXAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU1).

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.

&&

DISCUSSION...AIDED BY FORCING ASSOCIATED WITH A SHORT WAVE IMPULSE
TURNING EAST OF THE SOUTHERN HIGH PLAINS...INCREASING THUNDERSTORM
DEVELOPMENT IS EXPECTED DURING THE NEXT FEW HOURS ALONG A SURFACE
COLD FRONT AND REMNANT OUTFLOW BOUNDARY ACROSS THE WW AREA.  THE
OUTFLOW BOUNDARY...SITUATED NEAR OR JUST SOUTH OF THE RED RIVER MAY
BECOME THE FOCUS FOR AN INCREASINGLY ORGANIZED MESOSCALE CONVECTIVE
SYSTEM CAPABLE OF PRODUCING DAMAGING WINDS...LARGE HAIL AND ISOLATED
TORNADOES.  DISCRETE SUPERCELLS ARE POSSIBLE ALONG THE TRAILING
SOUTHERN FLANK OF THE DEVELOPING SYSTEM...SOUTHWARD THROUGH CENTRAL
TEXAS BY THIS AFTERNOON...AS WELL AS AHEAD OF THE SQUALL LINE ACROSS
NORTHERN TEXAS.  ONE OR TWO STRONG TORNADOES MAY NOT BE OUT OF THE
QUESTION.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 27035.


...KERR

Tornado Watches in Texas, 2013Tornado Watches in Oklahoma, 2013Every tornado watch in 2013

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.