Severe Thunderstorm Watch 161

Issued

Apr 13, 2012, 3:40 PM CDT (20:40 UTC)

Expired

Apr 13, 2012, 10:00 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Wichita radar (KICT), 109 km from the middle of the area, began a volume at 20:41 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

10%

One or more EF2 to EF5 tornadoes

5%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

10%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 509Apr 13, 2:37 PM CDT
• Mesoscale Discussion 511Apr 13, 5:40 PM CDT
• Mesoscale Discussion 515Apr 13, 9:14 PM CDT

589 
WWUS20 KWNS 132042
SEL1
SPC WW 132042
KSZ000-MOZ000-140300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 161
NWS STORM PREDICTION CENTER NORMAN OK
340 PM CDT FRI APR 13 2012

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

       SOUTH CENTRAL AND SOUTHEAST KANSAS
       EXTREME WESTERN MISSOURI

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 340 PM UNTIL
1000 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 80
STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES SOUTHWEST OF
CHANUTE KANSAS TO 45 MILES EAST NORTHEAST OF EMPORIA KANSAS.  FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU1).

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 160...

DISCUSSION...STORMS ARE INCREASING INTO EXTREME SERN KS WITHIN A
MODERATELY UNSTABLE AIR MASS WITH MLCAPE OF 1500-2000 J/KG.
ADDITIONAL STORMS ARE EXPECTED TO DEVELOP ALONG THE WRN EDGE OF THE
LOW LEVEL MOISTURE GRADIENT AS THIS RETREATS NWWD THIS EVENING.
LOCAL VWP PROFILES EXHIBIT VEERING WITH HEIGHT AND SUFFICIENT DEEP
LAYER SHEAR TO SUPPORT ORGANIZED CONVECTION INCLUDING A FEW
SUPERCELLS.  PRIMARY THREAT WILL BE LARGE HAIL AND STRONG WIND
GUSTS...ALTHOUGH AN ISOLATED TORNADO CANNOT BE RULED OUT ESPECIALLY
THIS EVENING.

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 500. MEAN STORM
MOTION VECTOR 22025.


...WEISS

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.