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TheForecast Post

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

Weather Trader Notebook MILEPOST 458

December 13, 2024 Friday Morning

Looking into next weekend for next Arctic blast, uncertainty about magnitude

What the month did

December 2024 was the 4th-warmest December in the 131-year national record (1895–2025), at 38.1°F against a 1991–2020 normal of 34.3°F (+3.8°F).

December 2024 was the 64th-driest December in the 131-year national record (1895–2025), at 2.4in against a 1991–2020 normal of 2.5in (-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.

Friday Headlines:

West coast of US from Bay Area of California into Oregon and Washington to see the atmospheric river from a 975 mb storm over the next 24-36 hours. Gusty winds, coastal heavy rain, and mountain snows are the typical impacts. Expect the active pattern across the Pacific Ocean storm track to continue in the next 7-10 days.

For subscribers

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Milepost
458 · laid 2024-12-13T16:02:21.523000Z
Source
https://weather.substack.com/p/december-13-2024-friday-morning
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