226
WTCA44 KNHC 100845
TASAT4
newsletter
Post-Tropical Cyclone Isaias Advisory Number 15
SNM National Hurricane Center Miami FL AL092026
400 AM CDT Saturday, October 10, 2026
...The threat of flash flooding continues with Isaias...
400 AM CDT Summary...0900 UTC...Information
LOCATION...32.0N 86.5W
About 25 MI...40 KM SSW OF MONTGOMERY ALABAMA
About 105 MI...170 KM S OF BIRMINGHAM ALABAMA
Maximum sustained winds...35 MPH...55 KM/H
Current movement...not 360 degrees at 14 MPH...22 KM/H
Minimum central pressure...1002 mb 29.59 inches
Watches and Warnings
Changes with this advisory:
All coastal and tropical storm warnings have been discontinued.
Suspended.
Summary of watches and warnings in effect:
There are no watches or warnings in effect.
Discussion and Outlook
At 400 AM CDT (0900 UTC), the center of Post-Tropical Cyclone Isaias was located near latitude 32.0 North, longitude 86.5
West. The post-tropical cyclone moved north near
of 14 mph (22 km/h), and this general motion is expected today.
A north-northeastward or northeastward motion is expected
Sunday. On the forecast track, Isaias is expected
to move through Alabama and into the Tennessee Valley later today and
on Sunday.
Maximum sustained winds have decreased to near 35 mph (55
km/h) with higher gusts. Gradual weakening is forecast
for today and Isaias is expected to dissipate on Sunday.
The estimated minimum central pressure is 1002 mb (29.59 inches).
Hazards Affecting Land
Key messages for Isaias can be found in the tropical cyclone
discussion under AWIPS header MIATCDAT4 and the
WMO WTNT44 KNHC. Rain: Over the weekend, Isaias is expected to produce
rainfall amounts of 4 to 8 inches in southern Alabama, the Florida
Panhandle and Big Bend, and southwestern Georgia. It is possible to
produce amounts up to 15 inches, especially in the borders
of the Florida Panhandle and Big Bend.
Across much of the rest of the Southeast, rainfall amounts are expected
2 to 5 inches. Higher amounts can be produced
up to 10 inches, especially in the southern Appalachian areas
and the Carolina coast.
Flash flooding, urban flooding, and river flooding are possible.
Rivers across the area, with significant impacts in large
parts of southern Alabama and the Florida Panhandle, in southwestern
Georgia. Flooding is also possible
floods and landslides in the southern Appalachians. For a full representation of the rainfall forecast associated
with Isaias, please refer to the Storm Rainfall Graphic
with the National Weather Service available at
hurricanes.gov/graphics_at4.shtml?rainqpf and the hurricane risk chart
flash floods at hurricanes.gov/graphics_at4.shtml?ero.
Tornado: The risk of tornadoes will continue this morning through this
afternoon in parts of the eastern Florida Panhandle, Georgia, and the
Carolinas.
Storm surge: Water levels will continue to fall through
along the Florida Gulf Coast all day.
SWELL: Isaias storm surges will continue to affect much of the
Gulf coasts of the United States, Mexico, and western
Cuba this weekend. These storm surges may cause
life-threatening wave conditions and ocean currents. By Please consult your local meteorological office for products.
A representation of the current risk can be found
fleets for the United States at:
hurricanes.gov/graphics_at4.shtml?ripCurrents
Next advisory
This is the last public advisory issued by the National Center