Tornado Watch 30

Issued

Feb 10, 1998, 2:45 PM CST (20:45 UTC)

Expired

Feb 10, 1998, 9:00 PM CST

In force

6 hr

Issued by

the Storm Prediction Center

The Shreveport radar (KSHV), 111 km from the middle of the area, began a volume at 20:46 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 
WWUS9 KMKC 102005
MKC WW 102005
LAZ000-ARZ000-110300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 30
STORM PREDICTION CENTER NORMAN OK
205 PM CST TUE FEB 10 1998

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

   NORTHERN LOUISIANA                          
   SOUTHERN ARKANSAS                           

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 245 PM UNTIL 900
PM CST.

THIS IS A PARTICULARLY DANGEROUS SITUATION WITH THE POSSIBILITY OF
VERY DAMAGING TORNADOES.  ALSO...LARGE 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 80 STATUTE MILES EAST AND WEST
OF A LINE FROM 70 MILES SOUTH SOUTHWEST OF MONROE LOUISIANA TO 35
MILES NORTHWEST OF PINE BLUFF 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 SEVERE
THUNDERSTORM WATCH NUMBER 27.  WATCH NUMBER 27 WILL NOT BE IN
EFFECT AFTER 245 PM CST.  CONTINUE...WW 28...WW 29...

DISCUSSION...SEVERE THUNDERSTORMS OVER EAST CENTRAL TEXAS ARE
EXPECTED TO PROPAGATE NORTHEASTWARD IN ASSOCIATION WITH SURFACE
MESO-LOW MOVING TOWARD NORTHWEST LOUISIANA.  LARGE SURFACE PRESSURE
FALLS AHEAD OF THE LOW ARE INCREASING MESOSCALE CONVERGENCE AND
UPWARD MOTION AHEAD OF VIGOROUS UPPER TROUGH MOVING ACROSS TEXAS. 
VAD AND PROFILER DATA CONFIRM MODEL FORECASTS OF 50-70 KT SOUTHERLY
LOW LEVEL JET INTO LOUISIANA.  THE JET IS FORECAST TO LIFT
NORTHWARD INTO SOUTHEAST ARKANSAS TONIGHT AND PROVIDE EXTREMELY
STRONG LOW LEVEL SHEAR AND HELICITY.  FAVORABLE STORM-RELATIVE FLOW
SUGGESTS CONTINUED POTENTIAL FOR TORNADIC SUPERCELLS...AS WELL AS
VERY STRONG SURFACE WIND GUSTS ASSOCIATED WITH BOW ECHOES ALONG THE
LINE.


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 FEWD CUMULONIMBI WITH MAXIMUM TOPS TO 450. 
MEAN STORM MOTION VECTOR 22055.


...WEISS

;313,0935 343,0934 343,0905 313,0910;

Tornado Watches in Louisiana, 1998Tornado Watches in Arkansas, 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.