HAZARDOUS WEATHER OUTLOOK
Issue Date: 431 PM CST WED DEC 23 2009
Expiration: 445 PM CST THU DEC 24 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL AND
SOUTHEAST MISSISSIPPI.
.DAY ONE...TONIGHT AND THURSDAY
A POWERFUL STORM SYSTEM IS EXPECTED TO PUSH ACROSS THE REGION ON
THURSDAY AND BRING HEAVY RAIN...THUNDERSTORMS AND GUSTY WINDS TO THE
AREA. SEVERE THUNDERSTORMS AND TORNADOES ARE POSSIBLE...MAINLY BETWEEN
NOON AND LATE AFTERNOON TOMORROW. ISOLATED INCIDENTS OF FLASH
FLOODING ARE ALSO POSSIBLE WITH RAINFALL AMOUNTS THROUGH LATE
THURSDAY AFTERNOON EXPECTED TO RANGE FROM 1 TO 3 INCHES.
EXPECT RAINFALL AND EMBEDDED THUNDERSTORMS TO INCREASE LATER
TONIGHT AS A WARM FRONT PUSHES NORTH INTO THE AREA. THE PRIMARY RISK
FOR SEVERE WEATHER WILL COME LATER IN THE DAY AS A SQUALL LINE OF
THUNDERSTORMS MOVES THROUGH JUST AHEAD OF AN ADVANCING COLD FRONT.
WIDESPREAD DAMAGING WIND GUSTS FROM 60 TO 70 MPH WILL BE POSSIBLE
WITH THIS SQUALL LINE...AS WELL AS ISOLATED TORNADOES. THERE WILL
ALSO BE A LESSER RISK OF A FEW SUPERCELL THUNDERSTORMS CAPABLE OF ALL
MODES OF SEVERE WEATHER...INCLUDING TORNADOES...JUST AHEAD OF THE
SQUALL LINE.
IN ADDITION TO THE POTENTIAL FOR HIGH WINDS WITH THE SQUALL
LINE...WINDS WILL ALSO BE QUITE GUSTY TONIGHT AND THROUGH MUCH OF
THURSDAY AWAY FROM STORMS DUE TO A VERY TIGHT PRESSURE GRADIENT OVER
THE REGION. THESE GUSTS COULD PEAK UP TO 35 MPH DURING THE DAY
THURSDAY AND A LAKE WIND ADVISORY IS IN EFFECT FOR THIS PERIOD.
.DAYS TWO THROUGH SEVEN...THURSDAY NIGHT THROUGH TUESDAY
NO WIDESPREAD HAZARDOUS WEATHER IS EXPECTED.
.SPOTTER CALL TO ACTION STATEMENT...
THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND
EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER
OPERATIONS...WILL BE NEEDED ON THURSDAY...BUT IS OTHERWISE NOT
ANTICIPATED THROUGH NEXT TUESDAY.
SPECIAL WEATHER STATEMENT
Issue Date: 250 PM CST WED DEC 23 2009
Expiration: 800 PM CST WED DEC 23 2009
...INTENSE STORM SYSTEM TO AFFECT THE REGION CHRISTMAS EVE...
SEVERE THUNDERSTORMS...WINDY CONDITIONS...AND LOCALIZED FLOODING
WILL ALL BE POSSIBLE CHRISTMAS EVE AS A STRONG WEATHER SYSTEM AFFECTS
THE AREA.
AN UNUSUALLY INTENSE LOW PRESSURE CENTER WILL BE PASSING FROM
NORTHERN LOUISIANA ACROSS ARKANSAS INTO SOUTHERN MISSOURI THURSDAY.
THE LOW WILL PUSH A STRONG COLD FRONT ACROSS THE REGION FROM WEST TO
EAST THURSDAY AFTERNOON. AHEAD OF THE FRONT...A LINE OF STRONG TO
SEVERE THUNDERSTORMS WILL DEVELOP AND SWEEP ACROSS THE AREA FROM
LATE MORNING THROUGH THE AFTERNOON HOURS. ADDITIONALLY...A FEW STRONG
TO SEVERE STORMS COULD DEVELOP AHEAD OF THE LINE...WITH THE RISK OF
THIS ACTIVITY STARTING WEST OF THE MISSISSIPPI RIVER LATE TONIGHT.
THE GREATEST RISK FOR SEVERE WEATHER LOOKS TO BE SOUTH OF
INTERSTATE 20. THE THREAT FOR NUMEROUS DAMAGING WIND GUSTS...WITH THE
POTENTIAL FOR WIND GUSTS IN EXCESS OF 70 MPH...WILL EXIST IN THIS
AREA ALONG WITH THE POSSIBILITY OF TORNADOES. FARTHER TO THE NORTH...
THE SEVERE WEATHER RISK WILL BE SOMEWHAT LESS...BUT DAMAGING WINDS OF
60 MPH WILL BE POSSIBLE ALONG WITH A SLIGHT RISK OF A TORNADO.
EVEN OUTSIDE OF THE THUNDERSTORMS...THE LOW PRESSURE SYSTEM WILL
PRODUCE STRONG SOUTH TO SOUTHEAST WINDS LATE TONIGHT AND THURSDAY.
SUSTAINED WINDS OF 15 TO 30 MPH...WITH GUSTS UP TO 40 MPH...WILL BE
COMMON...WITH THE STRONGEST WINDS IN THE MISSISSIPPI DELTA REGION.
THESE TYPES OF WINDS CAN CAUSE LARGE LIMBS AND A FEW TREES TO BE
DOWNED.
FINALLY...VERY HEAVY DOWNPOURS WILL OCCUR WITH THE STRONGEST STORMS
LATE TONIGHT AND THURSDAY. THIS WILL CAUSE LOCALIZED FLOODING OF LOW
LYING AND POOR DRAINAGE AREAS. TOTAL RAINFALL AMOUNTS OF 2 TO 4
INCHES WILL BE COMMON. FLASH FLOOD WATCHES HAVE BEEN ISSUED FOR
NORTHERN AND WESTERN PORTIONS OF THE ARKLAMISS...AND MAY NEED TO BE
EXPANDED THURSDAY.
WITH MANY PEOPLE TRAVELING TO HOLIDAY FESTIVITIES THURSDAY...IT IS
EXTRA IMPORTANT TO KEEP AWARE OF THE WEATHER SITUATION. PEOPLE SHOULD
BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS...AND LISTEN FOR
POSSIBLE WATCHES AND WARNINGS.
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