Minneapolis, Minnesota Revisions
MILEPOST 1123
Minneapolis's forecast for Wednesday has moved 9°F colder
69°F in the 20260915T18:00Z run, 59°F in the 20260917T12:00Z — 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 9°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 68.7°F in the 20260915T18:00Z cycle to 59.4°F in the 20260917T12:00Z — a move of -9.3°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) |
-9.3 °F | normal 0.0 °F · 2 of 7 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
8.9 °F | normal 9.3 °F current run |
- Milepost
- 1123 · laid 2026-09-17T22:25:17Z
- Model
- nbm-qmd · cycle 20260917T12:00Z
- 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
- 807480c604c82d3fc301f59a00767bdb040601679334333c762f6c99e95e78e0
- Machine
- JSON