Minneapolis, Minnesota Revisions
MILEPOST 1121
Minneapolis's forecast for Wednesday has moved 10°F colder
69°F in the 20260915T12:00Z run, 60°F in the 20260917T06:00Z — 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 7°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Wednesday, September 23 at 00Z in Minneapolis, that trail runs from 69.3°F in the 20260915T12:00Z cycle to 59.7°F in the 20260917T06:00Z — a move of -9.6°F across 8 runs.
The change is larger than the run's own 10th-to-90th percentile spread — the guidance did not merely narrow, it moved off its previous position.
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 Wednesday at 00Z api.weather.city /v1/history (nbm-qmd) |
-9.6 °F | normal 0.0 °F · 2 of 7 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
7 °F | normal 9.6 °F current run |
- Milepost
- 1121 · laid 2026-09-17T17:25:13Z
- Model
- nbm-qmd · cycle 20260917T06:00Z
- 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
- c37ba9d9a148145e311830664eea805bf83f9fe0ad51142c8072f02fbe852f88
- Machine
- JSON