Watches, Warnings & Advisories for Sunflower Co.

Monday, August 27, 2012

TS Isaac #11 Hydrologic Outlook 27 AUG 12

HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
629 PM CDT MON AUG 27 2012

...TROPICAL STORM ISAAC EXPECTED TO PRODUCE MODERATE TO MAJOR FLOODING
 ACROSS SOUTH MISSISSIPPI AND MINOR TO MODERATE FLOODING IN CENTRAL MISSISSIPPI...

TROPICAL STORM ISAAC IS APPROACHING THE MISSISSIPPI AND SOUTHEAST
LOUISIANA COASTLINES. THE STORM IS EXPECTED TO BRING AN INFLUX OF
DEEP TROPICAL MOISTURE TO SOUTH MISSISSIPPI AS IT MOVES INLAND. HEAVY
RAINFALL WILL DEVELOP AS SOME OF THE OUTER FEEDER BANDS MOVE INTO
SOUTHEAST MISSISSIPPI ON TUESDAY AFTERNOON. ISAAC WILL MOVE INLAND
TUESDAY NIGHT NEAR THE MOUTH OF THE MISSISSIPPI RIVER AND WILL SLOWLY
MOVE TO SOUTHWEST MISSISSIPPI BY THURSDAY. THE SLOW MOVEMENT WILL
ENHANCE RAINFALL TOTALS ACROSS SOUTH AND PORTIONS OF CENTRAL
MISSISSIPPI. SOME HEAVY RAINFALL COULD ALSO BE POSSIBLE ACROSS
NORTHEAST LOUISIANA AND SOUTHEAST ARKANSAS AS THE SYSTEM PROGRESSES
INTO THE REGION. FLASH FLOODING AND SIGNIFICANT RIVER FLOODING ARE
PROBABLE.

RAINFALL TOTALS FROM 5 TO 10 INCHES WITH LOCALLY HEAVIER AMOUNTS
ARE POSSIBLE FROM TUESDAY NIGHT INTO WEDNESDAY NIGHT ACROSS SOUTH
MISSISSIPPI WITH AMOUNTS UP TO 15 INCHES POSSIBLE BY THE TIME THE
STORM MOVES OUT OF THE SOUTH. RAINFALL ACROSS CENTRAL MISSISSIPPI COULD
APPROACH 5 INCHES FROM WEDNESDAY MORNING TO THURSDAY MORNING WITH STORM
TOTALS APPROACHING FROM 8 TO 10 INCHES BY THE TIME THE STORM MOVES
OUT OF THIS AREA. OUR NORTHERN AREAS OF MISSISSIPPI CAN EXPECT
RAINFALL AMOUNTS FROM 4 TO 7 INCHES. RAINFALL AMOUNTS FROM 4 TO 7
INCHES ARE ALSO POSSIBLE ACROSS NORTHEAST LOUISIANA AND SOUTHEAST
ARKANSAS.

THIS COULD POSSIBLY BE THE MOST SIGNIFICANT TROPICAL RAINFALL EVENT TO
OCCUR ACROSS SOUTH MISSISSIPPI IN MANY YEARS. MODERATE TO MAJOR RIVER
FLOODING IS POSSIBLE ACROSS THE LOWER PEARL RIVER, LEAF RIVER,
TALLAHALA CREEK, AND POSSIBLY THE CHICKASAWHAY RIVER. MINOR TO
MODERATE FLOODING IS POSSIBLE ALONG THE HOMOCHITTO RIVER AS THE
SYSTEM MOVES NEAR THAT AREA ON THURSDAY. THE PEARL RIVER AND BIG
BLACK RIVERS IN CENTRAL MISSISSIPPI COULD SEE MINOR TO MODERATE
FLOODING. RIVERS IN NORTHEAST LOUISIANA AND SOUTHEAST ARKANSAS SHOULD
SEE SIGNIFICANT RISES AND COULD APPROACH MINOR FLOOD STAGE AS THE
SYSTEM MOVES NORTHWARD ON THURSDAY INTO FRIDAY. MINOR FLOODING IS
POSSIBLE ACROSS SOME OF THE YAZOO RIVER BASIN TRIBUTARIES. HEAVY
RAINFALL ALONG OUTER BANDS COULD CAUSE SIGNIFICANT RISES ALONG OUR
TOMBIGBEE TRIBUTARIES AS WELL.

THIS SYSTEM WARRANTS KEEPING A CLOSE WATCH FOR THOSE LIVING IN FLOOD
PRONE AREAS ACROSS THE SOUTHERN TWO THIRDS OF MISSISSIPPI, NORTHEAST
LOUISIANA, AND SOUTHEAST ARKANSAS.

***DO NOT USE THIS WEBSITE AS YOUR SOLE SOURCE OF WEATHER INFORMATION, ESPECIALLY WATCHES AND WARNINGS. THIS WEBSITE DELIVERS FOCUSED INFORMATION FOR A SPECIFIC GEOGRAPHIC AREA AND IS NOT INTENDED TO PROVIDE TIMELY WEATHER WARNING INFORMATION***

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