Tornado Watch 253

Issued

May 30, 2013, 1:21 PM CDT (18:21 UTC)

Expired

May 30, 2013, 9:00 PM CDT

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Western Arkansas radar (KSRX), 112 km from the middle of the area, began a volume at 18:22 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

20%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 876May 30, 11:29 AM CDT
• Mesoscale Discussion 877May 30, 11:44 AM CDT
• Mesoscale Discussion 881May 30, 2:16 PM CDT
• Mesoscale Discussion 882May 30, 2:35 PM CDT
• Mesoscale Discussion 885May 30, 3:52 PM CDT
• Mesoscale Discussion 886May 30, 5:23 PM CDT
• Mesoscale Discussion 887May 30, 5:52 PM CDT
• Mesoscale Discussion 891May 30, 8:09 PM CDT

865 
WWUS20 KWNS 301824
SEL3  
SPC WW 301824
ARZ000-MOZ000-OKZ000-310200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 253
NWS STORM PREDICTION CENTER NORMAN OK
125 PM CDT THU MAY 30 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  WESTERN AND CENTRAL ARKANSAS
  SOUTHERN AND CENTRAL MISSOURI
  EASTERN OKLAHOMA

* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 125 PM UNTIL
  900 PM CDT.

* PRIMARY THREATS INCLUDE...
  SEVERAL TORNADOES POSSIBLE
  SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2
    INCHES IN DIAMETER POSSIBLE
  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 15 MILES WEST SOUTHWEST OF HOT
SPRINGS ARKANSAS TO 75 MILES NORTHWEST OF FORT LEONARD WOOD
MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).

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.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 250...WW 251...WW 252...

DISCUSSION...COMPLEX STORM EVOLUTION IS ONGOING ALONG MULTIPLE
BOUNDARIES WITHIN A VERY MOIST AND MODERATELY UNSTABLE AIR MASS WITH
MLCAPE OF 1500-3000 J/KG.  THE COLOCATION OF A 40-45 KT LLJ AND THE
SRN FRINGE OF STRONGER MIDLEVEL FLOW ATTENDING THE NEGATIVELY TILTED
MIDLEVEL TROUGH IS RESULTING IN SUFFICIENT SHEAR FOR SUPERCELLS AND
BOWING LINE SEGMENTS WITH A RISK FOR DAMAGING WINDS AND A FEW
TORNADOES.

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
500. MEAN STORM MOTION VECTOR 25025.


...MEAD

Tornado Watches in Missouri, 2013Tornado Watches in Arkansas, 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.