Severe Thunderstorm Watch 191

Issued

Apr 26, 2012, 2:11 PM CDT (19:11 UTC)

Expired

Apr 26, 2012, 8:35 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Jackson,KY radar (KJKL), 137 km from the middle of the area, began a volume at 19:14 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

40%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

60%

One or more hailstones of 2 inches or more

40%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 591Apr 26, 1:23 PM CDT
• Mesoscale Discussion 593Apr 26, 3:22 PM CDT
• Mesoscale Discussion 595Apr 26, 4:52 PM CDT
• Mesoscale Discussion 596Apr 26, 5:40 PM CDT

164 
WWUS20 KWNS 261912
SEL1
SPC WW 261912
KYZ000-TNZ000-270100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 191
NWS STORM PREDICTION CENTER NORMAN OK
315 PM EDT THU APR 26 2012

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

       EASTERN AND SOUTHERN KENTUCKY
       NORTHERN MIDDLE TENNESSEE

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 315 PM UNTIL
900 PM EDT.

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 40
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES EAST
SOUTHEAST OF JACKSON KENTUCKY TO 30 MILES WEST SOUTHWEST OF FORT
CAMPBELL KENTUCKY.  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.

DISCUSSION...A BROKEN BAND OF THUNDERSTORMS IS EXPECTED TO DEVELOP
ALONG AND JUST AHEAD OF A COLD FRONT MOVING SEWD ACROSS KY.  SURFACE
TEMPERATURES NEAR 80 AND DEWPOINTS IN THE MID 60S HAVE REDUCED
CONVECTIVE INHIBITION AND BOOSTED MLCAPE TO 2500 J/KG.  DEEP-LAYER
WNWLY SHEAR WILL BE SUPPORTIVE OF SEWD-MOVING SUPERCELLS WITH AN
ATTENDANT RISK FOR LARGE HAIL AND DAMAGING WINDS.

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 32030.


...THOMPSON

Severe Thunderstorm Watches in Kentucky, 2012Severe Thunderstorm Watches in Tennessee, 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.