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NHC / NOAA · Atlantique · AL092026
Suivi de Isaias
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Dernier bulletin reçu
Post-Tropical Cyclone Isaias Forecast Discussion Number 19
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Issued at 400 AM CDT Sun Oct 11 2026 000
WTNT44 KWNH 110834
TCDAT4
Post-Tropical Cyclone Isaias Discussion Number 19
NWS Weather Prediction Center College Park MD AL092026
400 AM CDT Sun Oct 11 2026
Key Messages:
1. Heavy rainfall associated with Post-Tropical Cyclone Isaias will
spread into the Central Appalachians and Mid-Atlantic on Sunday.
Isolated flash and urban flooding will be possible.
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
power-lines may occur, with the risk highest in elevated terrain.
3. Swells from Isaias will continue to affect much of the Gulf and
Southeastern Atlantic 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 the Piedmont and
Coastal Plain of Virginia and North Carolina.
FORECAST POSITIONS AND MAX WINDS
INIT 11/0900Z 35.4N 85.9W 20 KT 25 MPH...POST-TROPICAL
12H 11/1800Z 37.1N 82.8W 20 KT 25 MPH...POST-TROP/INLAND
24H 12/0600Z 38.4N 77.7W 20 KT 25 MPH...POST-TROP/INLAND
36H 12/1800Z...DISSIPATED
$$
Forecaster Gallina
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Post-Tropical Cyclone Isaias Forecast Discussion Number 19
Source NHCLire le texte reçu
Issued at 400 AM CDT Sun Oct 11 2026 000 WTNT44 KWNH 110834 TCDAT4 Post-Tropical Cyclone Isaias Discussion Number 19 NWS Weather Prediction Center College Park MD AL092026 400 AM CDT Sun Oct 11 2026 Key Messages: 1. Heavy rainfall associated with Post-Tropical Cyclone Isaias will spread into the Central Appalachians and Mid-Atlantic on Sunday. Isolated flash and urban flooding will be possible. 2. Strong wind gusts continue to pose a threat across the southeastern United States today, particularly near the southern Appalachians. Scattered power outages and downed trees and power-lines may occur, with the risk highest in elevated terrain. 3. Swells from Isaias will continue to affect much of the Gulf and Southeastern Atlantic coasts of the United States, Mexico, and western Cuba this weekend. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. 4. A couple of tornadoes are possible today across the Piedmont and Coastal Plain of Virginia and North Carolina. FORECAST POSITIONS AND MAX WINDS INIT 11/0900Z 35.4N 85.9W 20 KT 25 MPH...POST-TROPICAL 12H 11/1800Z 37.1N 82.8W 20 KT 25 MPH...POST-TROP/INLAND 24H 12/0600Z 38.4N 77.7W 20 KT 25 MPH...POST-TROP/INLAND 36H 12/1800Z...DISSIPATED $$ Forecaster Gallina ]]>Post-Tropical Cyclone Isaias Forecast Advisory Number 19
Source NHCLire le texte reçu
Issued at 0900 UTC SUN OCT 11 2026 000 WTNT24 KWNH 110832 TCMAT4 POST-TROPICAL CYCLONE ISAIAS FORECAST/ADVISORY NUMBER 19 NWS WEATHER PREDICTION CENTER COLLEGE PARK MD AL092026 0900 UTC SUN OCT 11 2026 POST-TROPICAL CYCLONE CENTER LOCATED NEAR 35.4N 85.9W AT 11/0900Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE NORTHEAST OR 55 DEGREES AT 20 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1010 MB MAX SUSTAINED WINDS 20 KT WITH GUSTS TO 30 KT. REPEAT...CENTER LOCATED NEAR 35.4N 85.9W AT 11/0900Z AT 11/0600Z CENTER WAS LOCATED NEAR 34.8N 86.9W FORECAST VALID 11/1800Z 37.1N 82.8W...POST-TROP/INLAND MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 12/0600Z 38.4N 77.7W...POST-TROP/INLAND MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 13/0600Z...DISSIPATED NEXT ADVISORY AT 11/1500Z $$ FORECASTER GALLINA ]]>
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