Tornado Watch 6

Issued

Jan 22, 2012, 7:28 PM CST (01:28 UTC)

Expired

Jan 23, 2012, 12:42 AM CST

In force

5 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

70 kt

The Paducah radar (KPAH), 59 km from the middle of the area, began a volume at 01:29 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

60%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

70%

One or more gusts of 65 knots or more

50%

Ten or more severe hail reports

30%

One or more hailstones of 2 inches or more

10%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 46Jan 22, 5:37 PM CST
• Mesoscale Discussion 51Jan 22, 8:37 PM CST
• Mesoscale Discussion 53Jan 22, 10:49 PM CST

281 
WWUS20 KWNS 230130
SEL6  
SPC WW 230130
ILZ000-INZ000-KYZ000-MOZ000-230800-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 6
NWS STORM PREDICTION CENTER NORMAN OK
730 PM CST SUN JAN 22 2012

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

       SOUTHERN ILLINOIS
       EXTREME SOUTHWEST INDIANA
       WESTERN KENTUCKY
       SOUTHEAST MISSOURI

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 730 PM UNTIL
200 AM CST.

TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 40 MILES WEST NORTHWEST OF
EVANSVILLE INDIANA TO 50 MILES SOUTH OF CAPE GIRARDEAU MISSOURI. 
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU6).

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 5...

DISCUSSION...THUNDERSTORMS ARE DEVELOPING NEWD FROM AR TO SE
MO...AND THIS TREND WILL CONTINUE THE NEXT SEVERAL HOURS AS THE LOW
LEVELS DESTABILIZE AND A COOL AIR MASS ERODES.  THOUGH SURFACE-BASED
INSTABILITY WILL BE WEAK AND MAINLY CONFINED TO THE SRN HALF OF THE
WATCH AREA...VERY STRONG VERTICAL SHEAR WILL BE SUPPORTIVE OF BOTH
EMBEDDED SUPERCELLS AND QLCS CIRCULATIONS CAPABLE OF PRODUCING A FEW
TORNADOES.  OTHERWISE...UPSCALE GROWTH INTO A LINE IS
EXPECTED...WITH AN ACCOMPANYING RISK FOR DAMAGING WINDS GIVEN THE
FAST STORM MOTIONS AND 60-70 KT WINDS JUST ABOVE THE SURFACE.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 24050.


...THOMPSON

Tornado Watches in Kentucky, 2012Tornado Watches in Illinois, 2012Tornado Watches in Missouri, 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.