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Post-Tropical Cyclone Isaias
Post-Tropical Cyclone Isaias Forecast Discussion
Advisory Number: 17
400 PM CDT Sat Oct 10 2026
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WTNT44 KWNH 102038
TCDAT4
Post-Tropical Cyclone Isaias Discussion Number 17
NWS Weather Prediction Center College Park MD AL092026
400 PM CDT Sat Oct 10 2026
Key Messages:
1. Heavy rainfall associated with Post-Tropical Cyclone Isaias will
continue across the Southern Appalachians and Southeast today.
Considerable flash and urban flooding will be possible. Landslides
are also possible across the Southern Appalachians.
2. Strong wind gusts continue to pose a threat across the
southeastern United States today, particularly near the southern
Appalachians. Scattered power outages and downed trees and
powerlines may occur, with the risk highest in elevated terrain.
3. Swells from Isaias will continue to affect much of the Gulf
coasts of the United States, Mexico, and western Cuba this weekend.
These swells are likely to cause life-threatening surf and rip
current conditions. Please consult products from your local weather
office.
4. A couple of tornadoes are possible today across eastern Georgia
and the Carolinas.
FORECAST POSITIONS AND MAX WINDS
INIT 10/2100Z 33.5N 86.9W 25 KT 30 MPH...POST-TROPICAL
12H 11/0600Z 35.2N 86.0W 25 KT 30 MPH...POST-TROP/INLAND
24H 11/1800Z 37.9N 81.9W 25 KT 30 MPH...POST-TROP/INLAND
36H 12/0600Z...DISSIPATED
$$
Forecaster Roth