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TheForecast Post

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

Weather Trader Notebook MILEPOST 583

April 22, 2025 Tuesday Weather Update

Unsettled pattern east of the Rockies with plenty of rainfall

What the month did

April 2025 was the 16th-warmest April in the 132-year national record (1895–2026), at 53.6°F against a 1991–2020 normal of 51.8°F (+1.7°F).

April 2025 was the 31st-wettest April in the 132-year national record (1895–2026), at 2.9in against a 1991–2020 normal of 2.7in (+0.2in).

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.

Let’s take a quick trip to Europe and North Africa to see some spinning cut-off troughs and Omega blocks forming from typical downstream Rossby wave progression across the Northern Hemisphere middle latitudes.

A sequence of troughs collect over the Mediterranean and if configured just right, they can access the cooler air from the polar front over Scandinavia and Germany.

For subscribers

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Milepost
583 · laid 2025-04-22T14:43:25.693000Z
Source
https://weather.substack.com/p/april-22-2025-tuesday-weather-update
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30a49174617430e308f96ce954c1525af6554b91f70d10c3267bdc699b999983
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