Severe Thunderstorm Watch 259

Issued

May 6, 2012, 3:49 PM CDT (20:49 UTC)

Expired

May 6, 2012, 11:00 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Topeka radar (KTWX), 91 km from the middle of the area, began a volume at 20:51 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

20%

One or more EF2 to EF5 tornadoes

5%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

30%

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

70%

• Mesoscale Discussion 731May 6, 1:22 PM CDT
• Mesoscale Discussion 733May 6, 2:40 PM CDT
• Mesoscale Discussion 734May 6, 3:56 PM CDT
• Mesoscale Discussion 739May 6, 7:24 PM CDT
• Mesoscale Discussion 741May 6, 9:55 PM CDT

104 
WWUS20 KWNS 062049
SEL9
SPC WW 062049
KSZ000-MOZ000-070400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 259
NWS STORM PREDICTION CENTER NORMAN OK
350 PM CDT SUN MAY 6 2012

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

       EASTERN KANSAS
       NORTHWEST AND WEST-CENTRAL MISSOURI

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 350 PM UNTIL
1100 PM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 50
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 25 MILES EAST
SOUTHEAST OF KANSAS CITY MISSOURI TO 70 MILES SOUTHWEST OF
EMPORIA KANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

OTHER WATCH INFORMATION...CONTINUE...WW 257...WW 258...

DISCUSSION...TSTMS ARE EXPECTED TO INCREASE IN COVERAGE AND
INTENSITY ACROSS THE WATCH AREA THIS AFTERNOON INTO EVENING AS COLD
FRONT CONTINUES SEWD AND INTERACTS WITH A MODERATE-STRONGLY UNSTABLE
AIR MASS.  THE STRONGEST VERTICAL SHEAR WILL REMAIN WITHIN
POST-FRONTAL ENVIRONMENT WITH MULTICELLS LIKELY BEING THE PREFERRED
STORM MODE.  LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE WITH THE
STRONGEST STORMS.

AVIATION...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 550. MEAN STORM
MOTION VECTOR 26020.


...MEAD

Severe Thunderstorm Watches in Kansas, 2012Severe Thunderstorm Watches in Missouri, 2012Every severe thunderstorm 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.