Edition 2026-10-02 The Ledger Archive API RSS Weather Trader
Milepost
1267

TheForecast Post

A chronicle of American weather and climate  ·  Friday, 2 October 2026

Minneapolis, Minnesota Revisions MILEPOST 1266

Minneapolis's forecast for Sunday has moved 10°F warmer

60°F in the 20260930T00:00Z run, 70°F in the 20261001T18:00Z — the 2nd-largest revision of the 7 cities on the roster that moved at all. The current run's 10th-to-90th percentile spread at that hour is 18°F.

Successive cycles do not merely refresh a forecast; they leave a trail. For Sunday, October 11 at 00Z in Minneapolis, that trail runs from 60.3°F in the 20260930T00:00Z cycle to 70.0°F in the 20261001T18:00Z — a move of +9.7°F across 8 runs.

The change is about half the run's 10th-to-90th percentile spread, so the earlier forecast is still inside the current range of outcomes.

Model NBM-QMD, via api.weather.city /v1/history. Percentiles are the same run's own.

The numbers in this piece, with what they are measured against
forecast revision for Sunday at 00Z
api.weather.city /v1/history (nbm-qmd)
9.7 °F normal 0.0 °F · 2 of 7
8 synoptic cycles
10th-to-90th percentile spread at that hour
api.weather.city (nbm-qmd)
18.3 °F normal 9.7 °F
current run
Milepost
1266 · laid 2026-10-02T04:25:12Z
Model
nbm-qmd · cycle 20261001T18:00Z
Desk
revision v1
Method
the same valid time read from successive synoptic cycles; the move is last run minus first run
Source
https://api.weather.city/v1/history
Digest
5565e86a7c700fbbf34d8549015a64504be0f78ad02710f952114302f16d325c
Machine
JSON