Tornado Watch 369

Issued

May 25, 2011, 10:37 AM CDT (15:37 UTC)

Expired

May 25, 2011, 5:27 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Springfield radar (KSGF), 46 km from the middle of the area, began a volume at 15:39 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

80%

One or more EF2 to EF5 tornadoes

50%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

80%

One or more hailstones of 2 inches or more

70%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 952May 25, 9:54 AM CDT
• Mesoscale Discussion 953May 25, 10:18 AM CDT
• Mesoscale Discussion 954May 25, 11:02 AM CDT
• Mesoscale Discussion 955May 25, 11:52 AM CDT
• Mesoscale Discussion 957May 25, 1:28 PM CDT
• Mesoscale Discussion 959May 25, 2:32 PM CDT
• Mesoscale Discussion 960May 25, 2:56 PM CDT
• Mesoscale Discussion 961May 25, 3:10 PM CDT

193 
WWUS20 KWNS 251541
SEL9
SPC WW 251541
ARZ000-KSZ000-MOZ000-252300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 369
NWS STORM PREDICTION CENTER NORMAN OK
1040 AM CDT WED MAY 25 2011

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

       NORTHERN ARKANSAS
       FAR EASTERN KANSAS
       CENTRAL AND SOUTHERN MISSOURI

EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 1040 AM UNTIL
600 PM CDT.

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 75 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES SOUTH SOUTHWEST OF
FLIPPIN ARKANSAS TO 60 MILES NORTH NORTHWEST OF COLUMBIA
MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).

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 367...WW 368...

DISCUSSION...TSTMS ARE EXPECTED TO INCREASE IN COVERAGE AND
INTENSITY LATE THIS MORNING INTO AFTERNOON IN ADVANCE OF POTENT
MIDLEVEL VORTICITY MAXIMUM MOVING OUT OF THE CNTRL PLAINS.  STORMS
WILL LIKELY BE FOCUSED ALONG SURFACE COLD FRONT WITH ADDITIONAL
ACTIVITY POSSIBLE DOWNSTREAM WITHIN OPEN WARM SECTOR.  AMBIENT AIR
MASS IS ALREADY MODERATELY UNSTABLE WITH MLCAPE OF 1000-2500
J/KG...AND FURTHER DESTABILIZATION WILL OCCUR THROUGH THE AFTERNOON.
 WHEN COUPLED WITH DEEP-LAYER SHEAR OF 40-45 KT AND EFFECTIVE SRH OF
200-300 M2/S2...SETUP WILL FAVOR THE DEVELOPMENT OF SUPERCELLS
CAPABLE OF TORNADOES...SOME OF WHICH COULD BE SIGNIFICANT.

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 24035.


...MEAD

Tornado Watches in Missouri, 2011Tornado Watches in Arkansas, 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.