Tornado Watch 815

Issued

Nov 24, 2001, 2:30 AM CST (08:30 UTC)

Expired

Nov 24, 2001, 7:00 AM CST

In force

5 hr

Issued by

the Storm Prediction Center

The Memphis radar (KNQA), 103 km from the middle of the area, began a volume at 08:30 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.

000 
WWUS20 KWNS 240803
SEL5  
SPC WW 240755
ARZ000-ILZ000-KYZ000-MOZ000-TNZ000-241300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 815
STORM PREDICTION CENTER NORMAN OK
155 AM CST SAT NOV 24 2001

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

   NORTHEAST ARKANSAS                           
   SOUTHERN ILLINOIS                           
   WESTERN KENTUCKY                           
   SOUTHEAST MISSOURI                           
   WESTERN TENNESSEE                          

EFFECTIVE THIS SATURDAY MORNING FROM 230 AM UNTIL 700 AM CST.

TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO
70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 65 STATUTE MILES EAST AND WEST
OF A LINE FROM 10 MILES EAST SOUTHEAST OF MEMPHIS TENNESSEE TO 30
MILES NORTH NORTHEAST OF CARBONDALE ILLINOIS.

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 813...WW 814...

DISCUSSION...LINE OF STRONG/SEVERE STORMS IS MOVING EWD ACROSS SRN
MO AND ERN AR AT 30-40 KT...WHILE NEW CELLS CONTINUE TO DEVELOP
AHEAD OF THE LINE OVER ERN AR.  IN ADDITION...STRONG CELLS ARE
MOVING NEWD ACROSS SERN AR TOWARD THE MEMPHIS AREA.  THUNDERSTORMS
ARE EMBEDDED WITHIN AN ENVIRONMENT CHARACTERIZED BY WEAK
INSTABILITY BUT VERY STRONG LOW/MID LEVEL SHEAR NOTED ON VAD WIND
PROFILES...WITH 50-60 KT FLOW WITHIN THE LOWEST 1-2 KM.  THIS
INDICATES POTENTIAL FOR SEVERE STORMS INCLUDING TORNADIC
SUPERCELLS.    


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH...EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. 
MEAN STORM MOTION VECTOR 22045.


...WEISS

345,0905 381,0901 381,0875 345,0884

Tornado Watches in Illinois, 2001Tornado Watches in Tennessee, 2001Tornado Watches in Missouri, 2001Every tornado watch in 2001

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.