Tornado Watch 43

Issued

Feb 28, 2012, 10:30 PM CST (04:30 UTC)

Expired

Feb 29, 2012, 4:56 AM CST

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

65 kt

The Springfield radar (KSGF), 87 km from the middle of the area, began a volume at 04:31 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

60%

One or more gusts of 65 knots or more

40%

Ten or more severe hail reports

30%

One or more hailstones of 2 inches or more

20%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 173Feb 28, 9:47 PM CST
• Mesoscale Discussion 175Feb 28, 11:40 PM CST
• Mesoscale Discussion 178Feb 29, 3:53 AM CST

502 
WWUS20 KWNS 290431
SEL3
SPC WW 290431
ARZ000-KSZ000-MOZ000-OKZ000-291100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 43
NWS STORM PREDICTION CENTER NORMAN OK
1030 PM CST TUE FEB 28 2012

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

       NORTHWEST ARKANSAS
       EXTREME SOUTHEAST KANSAS
       SOUTHWEST AND SOUTH CENTRAL MISSOURI
       EASTERN OKLAHOMA

EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 1030 PM
UNTIL 500 AM CST.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 75 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE
MILES EAST AND WEST OF A LINE FROM 65 MILES NORTH OF SPRINGFIELD
MISSOURI TO 45 MILES SOUTH SOUTHEAST OF POTEAU OKLAHOMA.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU3).

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 41...WW 42...

DISCUSSION...BROKEN FRONTAL SQUALL LINE...WITH SOME EMBEDDED
SEMI-DISCRETE STORMS/SUPERCELLS...WILL CONTINUE TO SURGE EWD ACROSS
OK/KS INTO SW MO/NW AR OVERNIGHT.  SOME LOW-LEVEL MOISTENING AND A
CONTINUATION OF VERY STRONG LOW-MIDLEVEL SHEAR PROFILES WILL
MAINTAIN A RISK FOR DAMAGING WINDS AND POSSIBLY A COUPLE OF
TORNADOES...AS WELL AS LARGE HAIL WITH THE MOST INTENSE/PERSISTENT
SUPERCELL STRUCTURES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 27050.


...THOMPSON

Tornado Watches in Missouri, 2012Tornado Watches in Arkansas, 2012Tornado Watches in Oklahoma, 2012Every tornado watch in 2012

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.