Severe Thunderstorm Warning 209, NWS Jackson, MS

000 
WWUS54 KJAN 151723
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1222 PM CDT TUE MAY 15 2007

ARC017-151732-
/O.EXP.KJAN.SV.W.0209.000000T0000Z-070515T1730Z/
CHICOT AR-
1222 PM CDT TUE MAY 15 2007

...THE SEVERE THUNDERSTORM WARNING FOR CHICOT COUNTY EXPIRES AT 1230
PM CDT...

AT 1220 AM CDT...A SEVERE THUNDERSTORM IN NORTHERN CHICOT COUNTY 
NEAR DEWEY CONTINUED MOVING NORTHEAST AT 15 MPH. THE STORM SHOULD BE 
DEPARTING THE COUNTY BY 1230 PM AND THE WARNING WILL BE ALLOWED TO 
EXPIRE.

LAT...LON 3345 9139 3341 9127 3352 9117 3353 9137

$$

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE JACKSON MS
1042 AM CDT TUE MAY 15 2007

.DISCUSSION...ANALYSIS THIS MORNING SHOWS THE HIGH PRESSURE IS
CONTINUEING TO DRIFT TO THE EAST WITH THE APPROACHING COLD FRONT
STRETCHING FROM CENTRAL MO THROUGH SOUTH CENTRAL OK. THIS IS PUTTING
THE ARKLAMISS REGION UNDER SLY TO SELY FLOW. THIS HAS ALLOWED FOR AN
INCREASE IN MOISTURE OVER THE AREA...ESPECIALLY OVER THE SOUTHWEST.
DEW POINTS HAVE BEGUN TO REACH THE 70 DEGREE MARK OVER THIS REGION.
FOR THE EASTERN HALF OF THE CWFA...DEW POINTS SEEM TO BE ON TRACK.
INSTABILITY IS ALSO OVER THE WEST...MAINLY ALONG AND WEST OF THE
MISSISSIPPI RIVER. WITH THIS IN MIND...AGREE WITH THE PREVIOUS
FORECASTER THAT THE BULK OF THE ACTIVITY AND ANY STRONG STORMS THAT
DEVELOP WILL MAINLY BE OVER THE WESTERN HALF OF THE CWFA THIS
AFTERNOON. AS FAR AS TIMING IS CONCERNED FOR THIS AFTERNOON...I AGREE
WITH THE PREVIOUS FORECAST FOR ISOLATED ACTIVITY TO BEGIN TO INITIATE
OVER MAINLY THE WESTERN HALF OF THE CWFA AROUND NOON.

WILL ALSO CONTINUE MENTION OF HAZE ACROSS THE ENTIRE AREA AS WE HAVE
CONTINUED TO SEE THIS OVER THE PAST 24 HOURS. SELY FLOW OVER THE
FLORIDA FIRES WILL CONTINUE TO PROVIDE HAZY CONDITIONS OVER THE AREA
UNTIL THE FRONT MAKES IT THROUGH THE AREA BY TOMORROW.

TEMPERATURES ACROSS MAINLY THE WESTERN HALF OF THE REGION HAVE BEEN
QUICKER TO RISE THAN ORIGINALLY EXPECTED. WENT AHEAD AND BUMPED UP
HIGH TEMEPERATURES A BIT TO ACCOUNT FOR THIS. OTHER THAN TEMPS AND
DEW POINTS...THE FORECAST LOOKS TO BE ON TRACK AND DID NOT NEED ANY
OTHER CHANGES.

&&

.AVIATION...HAZE ACROSS THE ARKLAMISS REGION WILL ALLOW SITES TO SEE
PERIODS OF MVFR FLIGHT CATEGORIES THROUGH TODAY. BEGINNING THIS
AFTERNOON SOME SITES WILL BEGIN TO SEE THE POSSIBILITY FOR FLIGHT
CATEGORIES TO BE AFFECTED BY ISOLATED AFTERNOON CONVECTION. THESE
WILL MAINLY AFFECT GLH...GWO...AND JAN THROUGH THIS EVENING. THERE
WILL BE A TIME PERIOD IN THE LATE EVENING AND OVERNIGHT HOURS WHEN
ACTIVITY WILL DIE DOWN. BUT THIS WILL PICK UP AGAIN AFTER MIDNIGHT IN
THE NORTHWEST AND SPREAD SOUTHEAST OVERNIGHT AS THE FRONT MOVES
THROUGH THE AREA.

&&

.PRELIMINARY POINT TEMPS/POPS...
JACKSON       84  65  80  55 /  45  51  61   6
MERIDIAN      84  63  80  55 /  11  33  67   8
VICKSBURG     85  67  80  55 /  57  61  41   5
HATTIESBURG   84  65  81  59 /  37  20  70  12
NATCHEZ       83  65  79  54 /  61  51  60   3
GREENVILLE    86  63  77  54 /  54  68  28   3
GREENWOOD     85  64  75  52 /  42  65  35   4

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...NONE.
LA...NONE.
AR...NONE.
&&

14

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
1141 AM CDT TUE MAY 15 2007

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
161004-
ADAMS-ASHLEY-ATTALA-BOLIVAR-CARROLL-CATAHOULA-CHICOT-CHOCTAW-
CLAIBORNE-CLARKE-CLAY-CONCORDIA-COPIAH-COVINGTON-EAST CARROLL-
FORREST-FRANKLIN LA-FRANKLIN MS-GRENADA-HINDS-HOLMES-HUMPHREYS-
ISSAQUENA-JASPER-JEFFERSON-JEFFERSON DAVIS-JONES-KEMPER-LAMAR-
LAUDERDALE-LAWRENCE-LEAKE-LEFLORE-LINCOLN-LOWNDES-MADISON LA-
MADISON MS-MARION-MONTGOMERY-MOREHOUSE-NESHOBA-NEWTON-NOXUBEE-
OKTIBBEHA-RANKIN-RICHLAND-SCOTT-SHARKEY-SIMPSON-SMITH-SUNFLOWER-
TENSAS-WARREN-WASHINGTON-WEBSTER-WEST CARROLL-WINSTON-YAZOO-
1141 AM CDT TUE MAY 15 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MISSISSIPPI...
NORTHEAST LOUISIANA...AND EXTREME SOUTHEAST ARKANSAS

.DAY ONE...TODAY AND TONIGHT...

...THUNDERSTORMS...
ISOLATED SEVERE THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON
AND EVENING OVER THE DELTA REGION...EXTREME SOUTHEAST ARKANSAS
AND PORTIONS OF NORTHEAST LOUISIANA. THE RISK FOR LARGE HAIL AND
DAMAGING DOWNBURST WINDS WILL BE GREATEST ALONG AND WEST OF A
GREENWOOD TO HOLLY BLUFF MISSISSIPPI TO DELHI LOUISIANA LINE
THROUGH ABOUT 9 PM THIS EVENING AS AN UPPER LEVEL DISTURBANCE
CROSSES THE AREA.

OTHERWISE...THERE WILL BE A RISK FOR STRONG THUNDERSTORMS THIS
AFTERNOON AND EARLY EVENING OVER THE WEST HALF OF THE OUTLOOK
AREA...PRIMARILY TO THE WEST OF THE INTERSTATE 55 CORRIDOR.
DAYTIME HEATING WILL CREATE AN UNSTABLE AND MOIST
ENVIRONMENT...LEADING TO THE DEVELOPMENT OF SCATTERED
THUNDERSTORMS THIS AFTERNOON. ISOLATED STORMS WILL BE CAPABLE OF
PRODUCING SMALL HAIL AND STRONG WIND GUSTS TO 45 MPH.

THERE WILL ALSO BE A RISK FOR STRONG THUNDERSTORMS LATE TONIGHT
OVER NORTH AND WEST PORTIONS OF THE OUTLOOK AREA. THUNDERSTORMS
WILL ACCOMPANY A STRONG COLD FRONT THAT SHOULD MOVE THROUGH
NORTHWEST PORTIONS OF THE OUTLOOK AREA AFTER MIDNIGHT. THE
THUNDERSTORMS MAY FORM INTO A LINE WHICH WOULD ENHANCE THE RISK
FOR STRONG WIND GUSTS OF UP TO 50 MPH...GENERALLY ALONG AND WEST
OF THE NATCHEZ TRACE PARKWAY.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

...DAYS TWO AND THREE...WEDNESDAY AND THURSDAY...
AS THE COLD FRONT CONTINUES TO PUSH SOUTHWARD ACROSS THE OUTLOOK
AREA EARLY WEDNESDAY...STRONG THUNDERSTORMS WILL BE
POSSIBLE...ESPECIALLY IN THE AREA SOUTH OF INTERSTATE 20 WHERE
GREATER HEATING IS EXPECTED TO CONTRIBUTE TO A MORE UNSTABLE
AIRMASS. THUNDERSTORMS ARE EXPECTED TO END OVER THE ENTIRE AREA
BY EARLY WEDNESDAY EVENING.

IF WIDESPREAD RAINFALL ASSOCIATED WITH THE COLD FRONT ENDS UP
BEING VERY LIGHT...THEN GREATER FIRE DANGER POTENTIAL WILL
DEVELOP THURSDAY INTO FRIDAY. SEVERAL MONTHS OF BELOW NORMAL
RAINFALL HAVE RESULTED IN VERY DRY GROUND CONDITIONS ACROSS MUCH
OF THE OUTLOOK AREA. WITH RELATIVE HUMIDITY EXPECTED TO FALL TO
NEAR OR BELOW 35 PERCENT AND WINDS EXPECTED TO INCREASE TO NEAR
15 MPH THURSDAY...A GREATER RISK FOR WILDFIRES WOULD RESULT. BE
SURE TO KEEP UP TO DATE WITH THE LATEST FIRE DANGER ASSESSMENT.

...DAYS FOUR THROUGH SEVEN...FRIDAY THROUGH MONDAY...
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER CALL TO ACTION STATEMENT...
THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND
EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER
OPERATIONS MAY BE NEEDED EARLY THIS EVENING FOR THE DELTA
REGION...OTHERWISE IS NOT EXPECTED THROUGH NEXT MONDAY.

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