Tornado Watch 39

Issued

Feb 27, 2009, 7:45 PM CST (01:45 UTC)

Expired

Feb 28, 2009, 2:52 AM CST

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Columbus AFB radar (KGWX), 85 km from the middle of the area, began a volume at 01:45 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

30%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

20%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 167Feb 27, 5:29 PM CST
• Mesoscale Discussion 169Feb 27, 6:38 PM CST
• Mesoscale Discussion 170Feb 27, 8:48 PM CST
• Mesoscale Discussion 171Feb 27, 10:47 PM CST
• Mesoscale Discussion 172Feb 28, 2:15 AM CST

506 
WWUS20 KWNS 280149
SEL9  
SPC WW 280149
ALZ000-MSZ000-280900-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 39
NWS STORM PREDICTION CENTER NORMAN OK
745 PM CST FRI FEB 27 2009

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

       CENTRAL ALABAMA
       CENTRAL AND EASTERN MISSISSIPPI

EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 745 PM
UNTIL 300 AM CST.

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 NORTH AND SOUTH OF A LINE FROM 25 MILES SOUTHWEST OF
GREENWOOD MISSISSIPPI TO 15 MILES EAST SOUTHEAST OF AUBURN
ALABAMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).

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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 38. WATCH NUMBER 38 WILL NOT BE IN EFFECT AFTER 745
PM CST. 

DISCUSSION...TSTMS/POSSIBLE SUPERCELLS EXPECTED TO PERSIST ALONG AND
JUST N OF SHALLOW WNW/ESE OUTFLOW BOUNDARY EXTENDING FROM CNTRL MS
INTO CNTRL AL.  ALTHOUGH POTENTIAL FOR ADDITIONAL STORM DEVELOPMENT
MAY TEMPORARILY BE DIMINISHED BY NOCTURNAL STABILIZATION...APPROACH
OF 70 KT MID LVL SPEED MAX NOW IN OK SUGGESTS THAT AN ASSOCIATED
INCREASE WILL OCCUR IN WSWLY LLJ OVER WW.  THIS IN TURN MAY LEAD TO
AN INCREASE IN STORM COVERAGE LATER TONIGHT/EARLY SAT.  STRENGTH OF
DEEP SHEAR AND SUSTAINED NATURE OF LOW LVL WAA MAY SUPPORT A FEW
SUPERCELLS WITH HAIL...SMALL SCALE BOWING SEGMENTS WITH WIND...AND
POSSIBLE 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
450. MEAN STORM MOTION VECTOR 28030.


...CORFIDI

Tornado Watches in Alabama, 2009Tornado Watches in Mississippi, 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.