459
WTNT34 KWNH 311459
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BULLETIN
Remnants Of Ida Advisory Number 22
NWS Weather Prediction Center College Park MD AL092021
1000 AM CDT Tue Aug 31 2021

...TROPICAL DEPRESSION IDA IS MOVING ACROSS THE TENNESSEE VALLEY... ...CONSIDERABLE HEAVY RAIN AND FLOOD THREAT WILL CONTINUE TO SPREAD
FROM THE TENNESSEE AND OHIO VALLEYS INTO THE CENTRAL AND SOUTHERN
APPALACHIANS AND MID ATLANTIC THROUGH WEDNESDAY...


SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION -----------------------------------------------
LOCATION...35.0N 87.8W
ABOUT 60 MI...95 KM WNW OF HUNTSVILLE ALABAMA
ABOUT 100 MI...160 KM SW OF NASHVILLE TENNESSEE
MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H
PRESENT MOVEMENT...NE OR 50 DEGREES AT 15 MPH...24 KM/H
MINIMUM CENTRAL PRESSURE...996 MB...29.42 INCHES


WATCHES AND WARNINGS
--------------------
Flood and Flash Flood Watches extend from the Gulf Coast Region
across the Tennessee and Ohio Valleys, central and southern
Appalachians, into the Mid-Atlantic and southern New England.


DISCUSSION AND OUTLOOK
----------------------
At 1000 AM CDT (1500 UTC), the remnants of Ida were located near
latitude 35.0 North, longitude 87.8 West. The remnants are moving
toward the northeast near 15 mph (24 km/h) and this motion is
expected to gradually accelerate over the next couple of days.

Maximum sustained winds are near 30 mph (45 km/h) with higher gusts.
Little change in strength is forecast during the next 48 hours.

The estimated minimum central pressure is 996 mb (29.42 inches).


HAZARDS AFFECTING LAND
----------------------
RAINFALL: Tropical Depression Ida will produce the following
rainfall totals:

Portions of the Southeast, including the western Florida panhandle,
eastern and northern Alabama, and northern Georgia: An additional 1
to 3 inches through Wednesday morning.

Middle Tennessee Valley, Ohio Valley, Central and Southern
Appalachians into the Mid-Atlantic: 3 to 6 inches with isolated
higher amounts through Thursday morning.

Southern New England: 2 to 4 inches with isolated higher amounts,
Wednesday into Thursday.

Considerable flash flooding is possible from the Middle Tennessee
Valley, Ohio Valley, Central and Southern Appalachians, into the
Mid-Atlantic and southern New England, with additional widespread
moderate and isolated major river flooding impacts forecast from
northern West Virginia and western Maryland into southern
Pennsylvania and New Jersey.

Widespread minor to isolated major river flooding is occurring
or forecast from the Lower Mississippi Valley into far western
Alabama. Rivers will remain elevated into next week.

TORNADOES: The threat for a couple of tornadoes will be centered
this evening across eastern Alabama, western Georgia, and the
Florida Panhandle. On Wednesday, the threat of a few tornadoes will
shift into portions of the Mid Atlantic.


NEXT ADVISORY
-------------
Next complete advisory at 400 PM CDT.

$$
Forecaster Churchill

FORECAST POSITIONS AND MAX WINDS

INIT 31/1500Z 35.0N 87.8W 25 KT 30 MPH...INLAND
12H 01/0000Z 36.0N 85.8W 25 KT 30 MPH...INLAND
24H 01/1200Z 37.4N 82.7W 20 KT 25 MPH...INLAND
36H 02/0000Z 38.6N 79.0W 20 KT 25 MPH...INLAND
48H 02/1200Z 39.7N 75.6W 25 KT 30 MPH...POST-TROP/INLAND
60H 03/0000Z 40.5N 72.0W 30 KT 35 MPH...POST-TROP/EXTRATROP
72H 03/1200Z 41.3N 68.7W 35 KT 40 MPH...POST-TROP/EXTRATROP
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