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TheForecast Post

A chronicle of American weather and climate  ·  Wednesday, 16 September 2026

Weather Trader Tropics MILEPOST 393

Sept 19, 2024 Thursday Tropical Update

Watching Gulf of Mexico in 7-8 day range

What the month did

September 2024 was the 2nd-warmest September in the 131-year national record (1895–2025), at 68.6°F against a 1991–2020 normal of 66.0°F (+2.7°F).

September 2024 was the 44th-driest September in the 131-year national record (1895–2025), at 2.3in against a 1991–2020 normal of 2.6in (-0.3in).

NOAA/NCEI Climate at a Glance, contiguous United States. This is the observed record for the month, not a score of anything said in this piece — the forecast ledger begins 2026-08-17 and cannot reach earlier posts.

Still in wait-and-see mode for details on development of Gulf of Mexico tropical storm or hurricane, but there is plenty of model support for Helene late next week.

Global models — conventional and A.I. trained — are all pointing to a tropical system in the Gulf of Mexico in 7-10 days.

For subscribers

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Milepost
393 · laid 2024-09-19T22:34:50.207000Z
Source
https://weather.substack.com/p/sept-19-2024-thursday-tropical-update
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