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TheForecast Post

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

Weather Trader Tropics MILEPOST 86

August 31, 2023 Hurricane Season

Traffic jam around Bermuda

What the month did

August 2023 was the 10th-warmest August in the 132-year national record (1895–2026), at 74.4°F against a 1991–2020 normal of 73.1°F (+1.3°F).

August 2023 was the 43rd-wettest August in the 132-year national record (1895–2026), at 2.8in against a 1991–2020 normal of 2.7in (+0.1in).

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.

4 tropical systems have all managed to collect around Bermuda in the western Atlantic. How many storms can fit in such a small area? Seems these small tropical storms like former-Gert and Jose are able to co-exist in the subtropical latitudes as long as there is no shear and apparently no steering. Idalia has become post-tropical as it merged with a front, but will also be left behind in the coming days to be reborn again.

NHC 5 PM ET advisory downgraded Idalia to a post-tropical storm over the Gulf Stream. The looping scenario suggested by models is not on the table. Idalia will likely become a tropical storm or hurricane again from Saturday-Monday.

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Milepost
86 · laid 2023-08-31T22:46:10.996000Z
Source
https://weather.substack.com/p/august-31-2023-hurricane-season
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