Tornado Watch 816

Issued

Sep 24, 2005, 4:20 PM CDT (21:20 UTC)

Expired

Sep 24, 2005, 8:51 PM CDT

In force

5 hr

Issued by

the Storm Prediction Center

The Jackson/Brandon,MS radar (KDGX), 117 km from the middle of the area, began a volume at 21:24 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.

• Mesoscale Discussion 2268Sep 24, 2:57 PM CDT
• Mesoscale Discussion 2271Sep 24, 6:07 PM CDT

000 
WWUS20 KWNS 242124
SEL6  
SPC WW 242124
ARZ000-LAZ000-MSZ000-CWZ000-250200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 816
NWS STORM PREDICTION CENTER NORMAN OK
420 PM CDT SAT SEP 24 2005

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

       SOUTHERN AND EASTERN ARKANSAS
       MUCH OF LOUISIANA
       MUCH OF MISSISSIPPI
       COASTAL WATERS

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 420 PM UNTIL
900 PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 60 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 120 STATUTE
MILES EAST AND WEST OF A LINE FROM 35 MILES EAST NORTHEAST OF PINE
BLUFF ARKANSAS TO 25 MILES EAST SOUTHEAST OF NEW ORLEANS
LOUISIANA.  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 814...WW 815...

DISCUSSION...GREATEST POTENTIAL FOR MINI-SUPERCELLS WITH TORNADOES
EXPECTED FROM S CNTRL MS NNW INTO SE AR/N CNTRL MS THROUGH EARLY
THIS EVENING.  JUXTAPOSITION OF GREATEST INSTABILITY...MOST
FAVORABLE SHEAR AND POTENTIAL FOR ISOLATED UPDRAFT DEVELOPMENT WILL
PERSIST IN THIS AREA ASSOCIATED WITH T.S. RITA.  A MORE LIMITED
THREAT FOR MINI SUPERCELLS WILL ALSO EXIST CLOSER TO THE GULF CST
WHERE WIND PROFILES ARE MORE UNIDIRECTIONAL.
NOTE: MAXIMUM WIND GUSTS AND MEAN CELL MOTION APPLY TO SEVERE
THUNDERSTORMS OUTSIDE RITAS EYEWALL.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 50 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400.
MEAN STORM MOTION VECTOR 16045.


...CORFIDI

342,0891 295,0875 295,0915 342,0932

Tornado Watches in Mississippi, 2005Tornado Watches in Louisiana, 2005Tornado Watches in Arkansas, 2005Every tornado watch in 2005

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.