PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1245 PM CDT TUE MAY 5 2009
...UPDATED DERECHO INFORMATION...
...DAMAGING WINDS AND TORNADOES SUNDAY MAY 3 2009...
THE NATIONAL WEATHER SERVICE DISPATCHED TWO STORM ASSESSMENT TEAMS
TO INVESTIGATE DAMAGE FROM SUNDAY. SURVEYS HAVE BEEN UPDATED BASED
ON INFORMATION COLLECTED AND REVIEWED BY THE STORM ASSESSMENT TEAMS.
HERE ARE THEIR FINDINGS SO FAR:
A DERECHO MOVED ACROSS CENTRAL ALABAMA ON SUNDAY AFTERNOON. A
DERECHO IS A WIDESPREAD AND LONG-LIVED STRAIGHT LINE WIND STORM
ASSOCIATED WITH A FAST MOVING SQUALL LINE. A DERECHO CAN PRODUCE A
LONG-LIVED GUST FRONT WHICH CAUSES STRAIGHT LINE WIND DAMAGE WITH
WINDS OVER 58 MPH. THE DERECHO ON SUNDAY PRODUCED DAMAGE IN SEVERAL
COUNTIES FROM THE MISSISSIPPI STATE LINE TO THE GEORGIA STATE LINE.
ASSOCIATED SPECIFICALLY WITH THE DERECHO...
...DERECHO RELATED DAMAGE...
THE DERECHO MOVED INTO WESTERN ALABAMA AROUND 1130 AM SUNDAY
MORNING. THIS DERECHO TRACKED EASTWARD AND EXITED INTO GEORGIA
AROUND 500 PM. CENTRAL ALABAMA EXPERIENCED WIDESPREAD WINDS OF 50 TO
60 MPH. SEVERAL LOCATIONS RECEIVED MAXIMUM WINDS OF 70 TO 80 MPH.
A FEW THOUSAND TREES MAY HAVE BEEN BLOWN DOWN IN CENTRAL ALABAMA.
FALLEN TREES LANDED ON STRUCTURES AND VEHICLES AND PRODUCED VARYING
DEGREES OF DAMAGE. AT LEAST ONE PERSON WAS INJURED AS THE WINDS
BLEW OVER A TRACTOR TRAILER. EXTENDED POWER OUTAGES WERE ALSO
REPORTED IN A FEW LOCATIONS. THE FOLLOWING COUNTIES RECEIVED DAMAGE
FROM THE DERECHO...SUMTER, GREENE, HALE, MARENGO, PERRY, BIBB,
DALLAS, SHELBY, CHILTON, AUTAUGA, LOWNDES, MONTGOMERY, ELMORE, COOSA,
TALLADEGA, CLAY, TALLAPOOSA, MACON, LEE, CHAMBERS, AND RANDOLPH.
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Cold, Wet Tuesday For Alabama; Drier Tomorrow - WET IS THE WORD: A well defined upper air short wave will bring occasional rain to Alabama today; rain amounts of 1/2 inch are likely for the northern half...
4 hours ago
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