000
WTNT54 KNHC 100847
TDSAT4
Post-Tropical Cyclone Isaias Discussion Number 15
SNM National Hurricane Center Miami FL AL092026
400 AM CDT Saturday, October 10, 2026
ISIS weakened very quickly over Alabama and made the
transition to a post-tropical cyclone as satellite images show
that all deep convection has spread northward from it
low-level center, with a warm front extending toward
east from the former tropical cyclone. Therefore, this is the
final advisory on Isaiah, with an initial intensity of 30 kt
based on surface observations.
The cyclone is expected to move northward and north-northeastward at the edge of this
week and weaken gradually as it moves
of the Tennessee and Ohio valleys. No changes were made
significant to track or intensity forecasts, except for lower Day 1 wind speed. Note
there is still a risk of some strong wind gusts
the Southern Appalachians, as the cyclone moves just
west of those mountains, along with the potential for heavy rain
that cause floods.
This is the final tropical cyclone discussion published by the
National Hurricane Center on this system. Future information on this
system can be found in discussions issued by the Center for
Weather Forecast starting at 1000 AM CDT, under the
AWIPS header TCDAT4, WMO header WTNT44 KWNH, and
online at www.hurricanes.gov.
rainfall forecasts for the United States are at:
and the prospects of
Flood risks can be found in
Key Messages:
1. Heavy rainfall associated with the post-tropical remnants of Isaiah will quickly spread northward toward the valley of
Tennessee, the southern Appalachians and the southeast today. This will be possible
flash and urban flooding could occur. This is also
landslides possible in the south
Appalachia. Additional heavy rain is possible
in parts of northwest Florida, as well as along the entire coast of
southwest Florida, which could cause flooding
sudden and urban.
2. Post-storm safety: Follow the advice of the
local authorities and avoid areas of downed power lines and
floods. Make sure generators are in working order
ventilated and positioned outdoors at least 20 feet away from it
homes and garages to prevent carbon monoxide poisoning
carbon. During cleanup, be careful when using chainsaws and
power tools. Drink plenty of water to prevent exhaustion
due to the heat
Forecast positions and maximum winds
INIT 10/0900Z 32.0N 86.5W 30 KT 35 MPH...post-tropical
12H 10/1800Z 33.7N 86.7W 25 KT 30 MPH...POST-TROP/INLAND
24H 11/0600Z 35.2N 86.0W 25 KT 30 MPH...POST-TROP/INLAND
36H 11/1800Z 37.6N 82.7W 20 KT 25 MPH...POST-TROP/INLAND
48H 12/0600Z...DISPLATED
Forecaster Blake
*This product has been automatically processed using a
translation program and may contain omissions and errors. e
The National Weather Service cannot guarantee accuracy
of the converted text. If in doubt, the English text is
Always the licensed version. *