...Heavy Rainfall Thursday and Thursday Night...

HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
355 PM CST TUE FEB 22 2011

...HYDROLOGIC OUTLOOK...

A SLOW-MOVING FRONTAL SYSTEM IS EXPECTED TO MOVE ACROSS MIDDLE
TENNESSEE THURSDAY AND THURSDAY NIGHT. WIDESPREAD HEAVY RAINFALL
WILL ACCOMPANY THIS SYSTEM. RAINFALL WILL DEVELOP EARLY THURSDAY
MORNING OVER NORTHWESTERN MIDDLE TENNESSEE, THEN SPREAD ACROSS THE
REMAINDER OF THE MID STATE ON THURSDAY, AND CONTINUE THROUGHOUT
THE NIGHT.

THE HEAVIEST RAINFALL IS EXPECTED ACROSS THE NORTHWEST COUNTIES
AND SMALLER AMOUNTS IN THE SOUTHEAST COUNTIES. A TOTAL OF 2 TO 4
INCHES IS EXPECTED DURING A 30-HOUR PERIOD FROM MIDNIGHT THURSDAY
MORNING UNTIL 600 AM FRIDAY.


AS THE GROUND BECOMES SATURATED DURING THIS EVENT, THE POTENTIAL
FOR FLOODING WILL INCREASE. PLACES MOST PRONE TO FLOODING WILL
INCLUDE URBAN AREAS, LOW-LYING AREAS, AND PLACES ALONG CREEKS AND
STREAMS. WATER LEVELS ON RIVERS MAY ALSO RISE SIGNIFICANTLY, AND
RIVER FLOODING MAY ALSO OCCUR AS EXCESSIVE RAIN WATER DRAINS OFF
SATURATED AREAS.


A SECOND WEATHER SYSTEM WILL MOVE THROUGH THE OHIO AND TENNESSEE
VALLEYS ON SUNDAY AND MONDAY WITH AN ADDITIONAL 1 TO 2 INCHES OF
RAINFALL POSSIBLE FOR THE MIDSTATE. FRIDAY NIGHT THROUGH SATURDAY
NIGHT SHOULD BE RELATIVELY DRY PERIODS. HOPEFULLY...THIS SHOULD
ALLOW TIME FOR AREA RIVERS TO DRAIN DOWN BEFORE THE SYSTEM THIS
WEEKEND.


$$


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