Edition 2026-10-06 The Ledger Archive API RSS Weather Trader
Milepost
1307

TheForecast Post

A chronicle of American weather and climate  ·  Tuesday, 6 October 2026

Minneapolis, Minnesota Revisions MILEPOST 1305

Minneapolis's forecast for Monday has moved 14°F warmer

52°F in the 20261004T12:00Z run, 66°F in the 20261006T06:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 24°F.

Successive cycles do not merely refresh a forecast; they leave a trail. For Monday, October 12 at 06Z in Minneapolis, that trail runs from 52.1°F in the 20261004T12:00Z cycle to 65.7°F in the 20261006T06:00Z — a move of +13.5°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 Monday at 06Z
api.weather.city /v1/history (nbm-qmd)
13.5 °F normal 0.0 °F · 1 of 10
8 synoptic cycles
10th-to-90th percentile spread at that hour
api.weather.city (nbm-qmd)
23.5 °F normal 13.5 °F
current run
Milepost
1305 · laid 2026-10-06T16:25:13Z
Model
nbm-qmd · cycle 20261006T06:00Z
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
82c640098a39a5ee977899f6b2f8157e48617778d409c032e6079da1ac8fab66
Machine
JSON