Tornado Watch 862

Issued

Aug 25, 2008, 1:10 AM CDT (06:10 UTC)

Expired

Aug 25, 2008, 7:29 AM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

0.5 in

Strongest gust expected

60 kt

The Mobile radar (KMOB), 125 km from the middle of the area, began a volume at 06:10 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

20%

One or more gusts of 65 knots or more

5%

Ten or more severe hail reports

5%

One or more hailstones of 2 inches or more

5%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 2151Aug 24, 11:38 PM CDT
• Mesoscale Discussion 2152Aug 25, 4:34 AM CDT

000
WWUS20 KWNS 250615
SEL2  
SPC WW 250615
ALZ000-FLZ000-CWZ000-251400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 862
NWS STORM PREDICTION CENTER NORMAN OK
110 AM CDT MON AUG 25 2008

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

       SOUTHERN AND CENTRAL ALABAMA
       WESTERN PARTS OF THE FLORIDA PANHANDLE
       COASTAL WATERS

EFFECTIVE THIS MONDAY MORNING FROM 110 AM UNTIL 900 AM CDT.

TORNADOES...HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 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 50 MILES WEST NORTHWEST OF
TROY ALABAMA TO 30 MILES SOUTH SOUTHEAST OF PENSACOLA FLORIDA. 
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU2).

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.

DISCUSSION...TSTMS HAVE BECOME SOMEWHAT BETTER ORGANIZED IN THE PAST
1-2 HRS FROM SW AL S AND SW INTO THE N CNTRL GULF OF MEXICO.  THIS
INTENSIFICATION APPEARS TO BE RELATED...IN PART...TO MORE
PROGRESSIVE /EWD/ MOVEMENT THAT HAS BEEN TAKEN ON BY T.D. FAY AND
THE MID LATITUDE VORT MAX WITH WHICH IT MERGED.  AS THE LARGE SCALE
CIRCULATION SYSTEM CONTINUES ENEWD...CONVERGENCE SHOULD BECOME MORE
FOCUSED IN ZONE OF RICH GULF INFLOW /SFC DEWPOINTS IN THE MID 70S
F/...BENEATH WEAK COLD ADVECTION ALOFT ALONG THE CNTRL GULF CST. 
ASSOCIATED DESTABILIZATION MAY SUPPORT A FEW SUSTAINED UPDRAFTS WITH
LOW LVL ROTATION/ISOLD TORNADOES GIVEN QUALITY OF MOISTURE INFLOW
AND FRICTIONAL/ ISALLOBARICALLY-INDUCED BACKING OF FLOW.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 19035.


...CORFIDI

Tornado Watches in Alabama, 2008Tornado Watches in Florida, 2008Every tornado watch in 2008

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.