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TheForecast Post

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

Weather Trader Notebook MILEPOST 399

Sept 25, 2024 Evening Update on Helene

Major damage expected throughout Georgia as Helene plows inland

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.

Category 4 Helene forecast to landfall Florida panhandle coast on Thursday with central pressure in the 944-950 mb range

Not expecting Category 5 unless Helene organizes quickly over southern Gulf of Mexico as upper-level winds & dry environment become less favorable — along with massive size.

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Milepost
399 · laid 2024-09-26T01:59:37.464000Z
Source
https://weather.substack.com/p/sept-25-2024-evening-update-on-helene
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