Tornado Watch 726

Issued

Oct 18, 2007, 10:27 PM CDT (03:27 UTC)

Expired

Oct 19, 2007, 2:25 AM CDT

In force

4 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Northeast Alabama radar (KHTX), 123 km from the middle of the area, began a volume at 03:26 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

40%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

60%

One or more gusts of 65 knots or more

50%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 2118Oct 18, 7:51 PM CDT
• Mesoscale Discussion 2119Oct 18, 9:51 PM CDT

000
WWUS20 KWNS 190325
SEL6  
SPC WW 190325
ALZ000-MSZ000-TNZ000-191000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 726
NWS STORM PREDICTION CENTER NORMAN OK
1025 PM CDT THU OCT 18 2007

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

       NORTHERN AND WESTERN ALABAMA
       EASTERN MISSISSIPPI
       MIDDLE TENNESSEE

EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 1025 PM
UNTIL 500 AM CDT.

TORNADOES...HAIL TO 1.5 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 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 55 MILES NORTHEAST OF
NASHVILLE TENNESSEE TO 95 MILES SOUTH SOUTHWEST OF COLUMBUS
MISSISSIPPI.  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 722...WW 724...WW 725...

DISCUSSION...LINE OF STRONG/SEVERE STORMS EXTENDS FROM WESTERN TN
INTO CENTRAL MS.  THESE STORMS ARE LIKELY TO MAINTAIN INTENSITY
THROUGH MUCH OF THE NIGHT AS THEY MOVE THROUGH MOIST AND MODERATELY
UNSTABLE AIR MASS.  DAMAGING WINDS APPEAR TO BE THE MAIN THREAT. 
HOWEVER...LOW LEVEL VERTICAL SHEAR IS SUFFICIENTLY STRONG TO POSE A
RISK OF ISOLATED TORNADOES.

AVIATION...TORNADOES AND 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
500. MEAN STORM MOTION VECTOR 25030.


...HART

Tornado Watches in Tennessee, 2007Tornado Watches in Alabama, 2007Tornado Watches in Mississippi, 2007Every tornado watch in 2007

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.