Tornado Watch 113

Issued

Apr 2, 2009, 6:21 PM CDT (23:21 UTC)

Expired

Apr 2, 2009, 9:27 PM CDT

In force

3 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Memphis radar (KNQA), 56 km from the middle of the area, began a volume at 23:23 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

30%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

40%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

60%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 376Apr 2, 5:36 PM CDT

044 
WWUS20 KWNS 022322
SEL3  
SPC WW 022322
ARZ000-MOZ000-MSZ000-TNZ000-030500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 113
NWS STORM PREDICTION CENTER NORMAN OK
620 PM CDT THU APR 2 2009

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

       NORTHEAST ARKANSAS
       THE MISSOURI BOOTHEEL
       NORTHERN MISSISSIPPI
       WEST TENNESSEE

EFFECTIVE THIS THURSDAY NIGHT FROM 620 PM UNTIL MIDNIGHT CDT.

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

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE
MILES EAST AND WEST OF A LINE FROM 50 MILES NORTHEAST OF
DYERSBURG TENNESSEE TO 50 MILES WEST OF COLUMBUS MISSISSIPPI. 
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU3).

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 108...WW 109...WW
110...WW 111...WW 112...

DISCUSSION...LOW-TOPPED LINE OF STORMS FORMING IMMEDIATELY AHEAD OF
EJECTING UPR VORT MAX EXPECTED TO STRENGTHEN AS REGION FURTHER
DESTABILIZES WITH STRONG ASCENT/MID LVL COLD ADVECTION.  WHILE WIND
PROFILES HAVE BEEN SOMEWHAT DISRUPTED BY PREVIOUS
CONVECTION...SUFFICIENT LOW LVL SHEAR EXISTS TO SUPPORT A THREAT FOR
ISOLD TORNADOES WITH ANY SEMI-DISCRETE SUPERCELLS...IN ADDITION TO
LARGE HAIL/HIGH WIND.

AVIATION...TORNADOES AND 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
450. MEAN STORM MOTION VECTOR 21040.


...CORFIDI

Tornado Watches in Tennessee, 2009Tornado Watches in Mississippi, 2009Tornado Watches in Arkansas, 2009Every tornado watch in 2009

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.