Severe Thunderstorm Watch 721

Issued

Aug 14, 2006, 3:47 PM CDT (20:47 UTC)

Expired

Aug 14, 2006, 9:35 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Paducah radar (KPAH), 93 km from the middle of the area, began a volume at 20:48 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

50%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

20%

One or more hailstones of 2 inches or more

10%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 1815Aug 14, 2:42 PM CDT
• Mesoscale Discussion 1816Aug 14, 3:17 PM CDT
• Mesoscale Discussion 1817Aug 14, 5:44 PM CDT

000 
WWUS20 KWNS 142049
SEL1  
SPC WW 142049
ARZ000-ILZ000-INZ000-KYZ000-MOZ000-TNZ000-150300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 721
NWS STORM PREDICTION CENTER NORMAN OK
350 PM CDT MON AUG 14 2006

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

       PARTS OF NORTHERN ARKANSAS
       PARTS OF SOUTHERN ILLINOIS
       SMALL PART OF SOUTHWEST INDIANA
       PARTS OF WESTERN KENTUCKY
       SOUTHEAST MISSOURI
       SMALL PART OF NORTHWEST TENNESSEE

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 350 PM UNTIL
1000 PM CDT.

HAIL TO 1.5 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 65
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 75 MILES EAST
SOUTHEAST OF MOUNT VERNON ILLINOIS TO 35 MILES NORTH OF
RUSSELLVILLE ARKANSAS. 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 720...

DISCUSSION...THUNDERSTORMS ARE INCREASING IN NUMBER AND INTENSITY
AHEAD OF COLD FRONT. WITH VERY UNSTABLE AIR AND 20-30 KT OF SHEAR
WIND DAMAGE WILL BE PRIMARY THREAT AS STORMS CONTINUE E/SE.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN STORM
MOTION VECTOR 27025.


...HALES

Severe Thunderstorm Watches in Illinois, 2006Severe Thunderstorm Watches in Missouri, 2006Severe Thunderstorm Watches in Arkansas, 2006Every severe thunderstorm watch in 2006

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.