Tornado Watch 863

Issued

Oct 4, 1998, 5:15 PM CDT (22:15 UTC)

Expired

Oct 5, 1998, 12:00 AM CDT

In force

7 hr

Issued by

the Storm Prediction Center

The Pleasant Hill radar (KEAX), 80 km from the middle of the area, began a volume at 22:16 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.

070 
WWUS9 KMKC 042150
SEL3  
MKC WW 042150
MOZ000-KSZ000-050500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 863
STORM PREDICTION CENTER NORMAN OK
450 PM CDT SUN OCT 4 1998

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

   WESTERN AND CENTRAL MISSOURI                           
   EASTERN KANSAS                             

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 515 PM UNTIL
MIDNIGHT CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 100 STATUTE MILES EAST AND WEST
OF A LINE FROM 10 MILES SOUTH SOUTHEAST OF JOPLIN MISSOURI TO 70
MILES NORTH OF KNOB NOSTER MISSOURI.

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 860...WW 861...WW 862...

DISCUSSION...CONVECTIVE CLUSTER DEVELOPING AND MOVING INTO WATCH
AREA AHEAD OF DRY LINE AND ALONG WARM FRONT. AIR MASS VERY UNSTABLE
WITH BEST CAPES FROM 2500 TO 3500 J/KG. 50 KT LOW LEVEL JET WILL
RESULT IN SUFFICIENT SHEAR FOR A FEW DAMAGING TORNADOES...ALONG
WITH SCATTERED DOWNBURSTS AND LARGE HAIL. 

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. 
MEAN STORM MOTION VECTOR 24040.

...ROGASH

370,0961 394,0952 394,0913 370,0923

Tornado Watches in Missouri, 1998Tornado Watches in Kansas, 1998Every tornado watch in 1998

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.