National Hurricane Center issues ADVISORY 17 for POST-TROPICAL CYCLONE ISAIAS
953
WTNT34 KWNH 102037
TCPAT4
BULLETIN
Post-Tropical Cyclone Isaias Advisory Number 17
NWS Weather Prediction Center College Park MD AL092026
400 PM CDT Sat Oct 10 2026
...FLASH FLOODING RISK CONTINUES WITH ISAIAS AS IT MOVES THROUGH
THE SOUTHEAST UNITED STATES...
SUMMARY OF 400 PM CDT...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...33.5N 86.9W
ABOUT 5 MI...10 KM W OF BIRMINGHAM ALABAMA
ABOUT 180 MI...290 KM S OF NASHVILLE TENNESSEE
MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H
PRESENT MOVEMENT...NNE OR 25 DEGREES AT 15 MPH...24 KM/H
MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES
WATCHES AND WARNINGS
--------------------
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
Flood Watches are in effect for...
* Portions of the Southeast United States
* Southern Appalachians
High Wind Warning is in effect for...
* Portions of the Southern Appalachians
Wind Advisory is in effect for...
* Portions of the Mid-South and Southern Appalachians
DISCUSSION AND OUTLOOK
----------------------
At 400 PM CDT (2100 UTC), the center of Post-Tropical Cyclone Isaias
was located near latitude 33.5 North, longitude 86.9 West. The
post-tropical cyclone is moving toward the north-northeast near 15
mph (24 km/h) and this motion is expected to become more
northeasterly and accelerate by Sunday.
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 1007 mb (29.74 inches).
HAZARDS AFFECTING LAND
----------------------
Key messages for Isaias can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT4 and WMO header WTNT44 KNHC.
RAINFALL: Rainfall totals of 3 to 6 inches with localized maximum
amounts of 10 inches are possible across the Southern Appalachians
from northeast Georgia into the western Carolinas and from the upper
coast of South Carolina into eastern North Carolina. Additional
rainfall totals of 1 to 2 inches possible across the remainder of
the Southeast into northern Florida.
Flash, urban, and river flooding is possible across the region, with
considerable impacts, including landslides, possible across the
southern Appalachians. Significant river flooding across the western
Florida Panhandle will crest today through Sunday.
For a complete depiction of forecast rainfall associated with
Isaias, please see the National Weather Service Storm Total Rainfall
Graphic available at
hurricanes.gov/graphics_at4.shtml?rainqpf and the Flash Flood Risk
graphic at hurricanes.gov/graphics_at4.shtml?ero.
TORNADOES: A couple of tornadoes are possible today across eastern
Georgia and the Carolinas.
WIND: 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.
SURF: 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.
A depiction of rip current risk for the United States can be found
at: hurricanes.gov/graphics_at4.shtml?ripCurrents
NEXT ADVISORY
-------------
Next complete advisory at 1000 PM CDT.
$$
Forecaster Roth
Source: National Hurricane Center issues ADVISORY 17 for POST-TROPICAL CYCLONE ISAIAS (https://mesonet.agron.iastate.edu/p.php?pid=202610102100-KWNH-WTNT34-TCPAT4)
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