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Milepost
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TheForecast Post

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

Weather Trader Notebook MILEPOST 90

Lee ready to explode | September 5, 2023

Rapid intensification is highly likely

What the month did

September 2023 was the 9th-warmest September in the 131-year national record (1895–2025), at 67.7°F against a 1991–2020 normal of 66.0°F (+1.8°F).

September 2023 was the 27th-driest September in the 131-year national record (1895–2025), at 2.1in against a 1991–2020 normal of 2.6in (-0.4in).

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.

Tropical Storm Lee is poised to rapidly intensify over the next several days potentially reaching Category 5.

By Friday afternoon, Lee will be a powerful Major Hurricane, and that forecast is probably conservative.

For subscribers

The rest of this piece is for paid subscribers of Weather Trader. The Post keeps the archive, the index and the record; the writing itself stays behind the same subscription it was published under.

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Milepost
90 · laid 2023-09-06T02:33:38.077000Z
Source
https://weather.substack.com/p/lee-ready-to-explode-september-5
Digest
81373ca38ecc6ef32f9263f2dd492e00d3c6e515c6c44352b28817d759be70e0
Machine
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