Severe Thunderstorm Warning 458, NWS Jackson, MS

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE JACKSON MS
1225 PM CDT THU JUN 21 2001

ON SATELLITE IMAGERY UPPER TROF AXIS WAS WORKING ITS WAY DOWN TOWARD THE
SOUTHERN PLAINS. THE COLD FRONT WAS MOVING TOWARD NORTHWEST
MISSISSIPPI. A LINE OF STRONG THUNDERSTORMS...ALONG AN OUTFLOW BOUNDARY
WAS ABOUT TO MOVE INTO NORTHWEST MISSISSIPPI. SCATTERED CONVECTION WAS
NOTED OVER THE CENTRAL AND SOUTH...MOVING EAST. SO HAVE MENTION A
FEW POSSIBLY SEVERE IN THE NORTH WITH CAPES OF AROUND 3500 TO NEAR
4000. ALSO HAVE INCREASE POPS SOME ESPECIALLY IN THE NORTH. MADE SLIGHT
TEMPERATURE ADJUSTMENTS AS WELL. THE REST OF FORECAST APPEARS TO BE
ON TRACK.

.JAN...
MS...NONE.
]LA...NONE.
AR...NONE.
17

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
221200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
1203 PM CDT THU JUN 21 2001

...THUNDERSTORMS...
ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE OVER SOUTHEAST
ARKANSAS AND NORTH MISSISSIPPI THIS AFTERNOON AND EARLY
EVENING...ALONG AND NORTH OF A CROSSETT ARKANSAS TO LEXINGTON TO
COLUMBUS LINE. DAMAGING WINDS AND LARGE HAIL ARE THE THREAT WITH
THESE STORMS.

THE AIRMASS ACROSS THE LOWER MISSISSIPPI VALLEY IS VERY MOIST AND
UNSTABLE TODAY. A BOUNDARY PRODUCED BY THUNDERSTORMS OVER CENTRAL
ARKANSAS WILL MOVE INTO SOUTHEAST ARKANSAS AND NORTHWEST
MISSISSIPPI BY EARLY AFTERNOON AND CAUSE THE DEVELOPMENT OF
THUNDERSTORMS. THESE STORMS WILL SPREAD INTO NORTHEAST
MISSISSIPPI BY LATE AFTERNOON. DUE TO THE STRONG INSTABILITY OVER
THE AREA...A FEW OF THESE STORMS MAY BECOME SEVERE DURING THE
AFTERNOON AND EARLY EVENING HOURS.

ACTIVATION OF STORM SPOTTERS MAY BE REQUIRED OVER SOUTHEAST
ARKANSAS AND NORTH MISSISSIPPI THIS AFTERNOON.

ACROSS NORTHEAST LOUISIANA AND CENTRAL AND SOUTHERN
MISSISSIPPI...DAYTIME HEATING WILL RESULT IN THE DEVELOPMENT OF
SCATTERED THUNDERSTORMS. WHILE THESE STORMS ARE NOT EXPECTED TO
BE SEVERE...WIND GUSTS TO 45 MPH AND SMALL HAIL WILL OCCUR WITH
THE STRONGEST STORMS.

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT
WWW.SRH.NOAA.GOV/JAN. THIS INCLUDES THE GRAPHICAL HAZARDOUS
WEATEHER OUTLOOK.

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE JACKSON MS
1246 PM CDT THU JUN 21 2001

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ...COUNTY LOCAToION....

1241 PM    BRANDON                   MS   0.75 INCH HAIL
06/21/01   RANKIN                         REPORTED BY EOC

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
221200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
123 PM CDT THU JUN 21 2001

...THUNDERSTORMS...
ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE OVER ALL OF SOUTHEAST
ARKANSAS...NORTHEAST LOUISIANA AND PORTIONS OF CENTRAL AND
SOUTHERN MISSISSIPPI THE REMAINDER OF THIS AFTERNOON INTO THE
EARLY EVENING.

THE MAIN THREAT WITH ANY SEVERE THUNDERSTORMS WILL BE DAMAGING
STRAIGHTLINE WINDS WITH LARGE HAIL ALSO POSSIBLE. THE TORNADO
THREAT IS MINIMAL AT THIS TIME.

ACTIVATION OF STORM SPOTTERS MAY BE REQUIRED OVER EXTREME
SOUTHEAST ARKANSAS...NORTHEAST LOUISIANA AND INTO PORTIONS OF
CENTRAL MISSISSIPPI LATER TODAY.

...FLOODING...
LOCALIZED RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE THROUGH
THE EVENING HOURS ACROSS PORTIONS OF EXTREME SOUTHEAST ARKANSAS,
NORTHEAST LOUISIANA...INTO CENTRAL MISSISSIPPI AS SHOWERS AND
THUNDERSTORMS DEVELOP AND MOVE EAST ACROSS THE REGION. THE
POTENTIAL FOR SMALL STREAM FLOODING, STREET FLOODING, AND
FLOODING OF RAVINES AND LOW LYING AREAS IS POSSIBLE, BUT NOT
EXPECTED TO BE WIDESPREAD AND TO BE VERY LOCALIZED.

THE AIRMASS ACROSS THE LOWER MISSISSIPPI VALLEY IS VERY MOIST AND
UNSTABLE TODAY. A BOUNDARY PRODUCED BY THUNDERSTORMS OVER CENTRAL
ARKANSAS CONTINUES TO MOVE INTO SOUTHEAST ARKANSAS AND NORTHWEST
MISSISSIPPI AS OF EARLY AFTERNOON AND WILL HELP INITIATE STRONG
TO SEVERE THUNDERSTORMS ALONG AND AHEAD OF IT. THESE STORMS WILL
SPREAD INTO NORTHEAST LOUISIANA INTO CENTRAL AND EASTERN
MISSISSIPPI THROUGH THE EVENING HOURS. DUE TO A VERY UNSTABLE AND
MOIST AIRMASS IN PLACE, A FEW STORMS MAY BECOME SEVERE ALOQNG WITH
LOCALIZED HEAVY RAINFALL.

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT
WWW.SRH.NOAA.GOV/JAN. THIS INCLUDES THE GRAPHICAL HAZARDOUS
WEATHER OUTLOOK.