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TheForecast Post

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

Weather Trader Tropics MILEPOST 299

June 4, 2024 Tropical Update

Global tropics remain quiet for next week, at least

What the month did

June 2024 was the 2nd-warmest June in the 132-year national record (1895–2026), at 71.8°F against a 1991–2020 normal of 69.5°F (+2.3°F).

June 2024 was the 41st-driest June in the 132-year national record (1895–2026), at 2.8in against a 1991–2020 normal of 3.1in (-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.

An interesting new paper was published on African Easterly Wave (AEW) strength and behavior over the past 4-decades using a tracking algorithm on the ERA5 reanalysis data.

Tropical cyclogenesis occurs farther west for weaker developing African easterly waves (AEWs) than for stronger developing AEWs

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Milepost
299 · laid 2024-06-04T14:47:30.515000Z
Source
https://weather.substack.com/p/june-4-2024-tropical-update
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