Tornado Watch 321

Issued

May 9, 1998, 6:00 PM CDT (23:00 UTC)

Expired

May 9, 1998, 11:00 PM CDT

In force

5 hr

Issued by

the Storm Prediction Center

The Little Rock radar (KLZK), 27 km from the middle of the area, began a volume at 22:59 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.

071 
WWUS9 KMKC 092221
SEL1  
MKC WW 092221
ARZ000-100400-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 321
STORM PREDICTION CENTER NORMAN OK
521 PM CDT SAT MAY 9 1998

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

   ARKANSAS                           

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 600 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 90 STATUTE MILES EAST AND WEST
OF A LINE FROM 35 MILES EAST NORTHEAST OF HARRISON ARKANSAS TO 20
MILES EAST SOUTHEAST OF EL DORADO ARKANSAS.

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 318.  WATCH NUMBER 318 WILL NOT BE IN EFFECT AFTER 600 PM
CDT.  CONTINUE...WW 320...

DISCUSSION...SEVERE THUNDERSTORMS ARE CROSSING THE
OKLAHOMA/ARKANSAS STATE LINE...WITH ADDITIONAL STRONG STORMS
CONTINUING OVER NORTHERN ARKANSAS NORTH OF SECONDARY WARM FRONT. 
CONVECTION IS LOCATED AHEAD OF UPPER LOW MOVING EASTWARD ACROSS
EASTERN OKLAHOMA.  STORMS MAY ALSO CONTINUE DEVELOPNG ALONG DRY
LINE MOVING INTO SOUTHWEST ARKANSAS...ALTHOUGH SOUTHWARD
DEVELOPMENT WILL BE LIMITED BY APPARENT WARM AIR ALOFT.  FAVORABLE
DYNAMIC FORCING AND MODERATE INSTABILITY SUGGESTS CONTINUING THREAT
OF SEVERE STORMS...AND VAD WINDS AT LZK SHOW SUFFICIENT
SHEAR/HELICITY FOR POSSIBLE SUPERCELLS. 


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 450. 
MEAN STORM MOTION VECTOR 25035.


...WEISS

362,0905 330,0905 330,0940 362,0940

Tornado Watches in Arkansas, 1998Tornado Watches in Mississippi, 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.