Tornado Watch 862

Issued

Oct 18, 2004, 8:00 PM CDT (01:00 UTC)

Expired

Oct 18, 2004, 11:00 PM CDT

In force

3 hr

Issued by

the Storm Prediction Center

The Memphis radar (KNQA), 102 km from the middle of the area, began a volume at 01:02 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 2329Oct 18, 6:02 PM CDT
• Mesoscale Discussion 2331Oct 18, 9:09 PM CDT
• Mesoscale Discussion 2332Oct 18, 10:33 PM CDT

000 
WWUS20 KWNS 190105
SEL2  
SPC WW 190100
ARZ000-MOZ000-TNZ000-190400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 862
NWS STORM PREDICTION CENTER NORMAN OK
800 PM CDT MON OCT 18 2004

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

       NORTHEAST ARKANSAS
       MISSOURI BOOTHEEL
       WESTERN AND MIDDLE TENNESSEE

EFFECTIVE THIS MONDAY EVENING FROM 800 PM UNTIL 1100 PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 55 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 20 MILES WEST SOUTHWEST OF JONESBORO ARKANSAS
TO 30 MILES EAST SOUTHEAST OF NASHVILLE TENNESSEE.

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 858. WATCH NUMBER 858 WILL NOT BE IN EFFECT AFTER 800
PM CDT. CONTINUE...WW 857...WW 859...WW 860...WW 861...

DISCUSSION...STRONG DEEP LAYER SHEAR AND INSTABILITY WILL SUPPORT
SUPERCELLS THE NEXT SEVERAL HOURS...WITH FAVORABLE LOW LEVEL SHEAR
AND BOUNDARY LAYER MOISTURE FOR TORNADOES. HOWEVER...THE TORNADO
THREAT MAY SLOWLY DIMINISH AS THE BOUNDARY LAYER SLOWLY
COOLS/STABILIZES WITH LARGE HAIL BECOMING THE MAIN THREAT LATER IN
THE EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.
MEAN STORM MOTION VECTOR 26030.


...IMY

362,0905 364,0861 350,0861 345,0905

Tornado Watches in Tennessee, 2004Tornado Watches in Arkansas, 2004Tornado Watches in Kentucky, 2004Every tornado watch in 2004

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.