Minneapolis, Minnesota Revisions
MILEPOST 1159
Minneapolis's forecast for Monday has moved 7°F colder
66°F in the 20260918T18:00Z run, 60°F in the 20260920T12:00Z — the 2nd-largest revision of the 3 cities on the roster that moved at all. The current run's 10th-to-90th percentile spread at that hour is 10°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Monday, September 21 at 21Z in Minneapolis, that trail runs from 66.2°F in the 20260918T18:00Z cycle to 59.7°F in the 20260920T12:00Z — a move of -6.5°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 21Z api.weather.city /v1/history (nbm-qmd) |
-6.5 °F | normal 0.0 °F · 2 of 3 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
10.3 °F | normal 6.5 °F current run |
- Milepost
- 1159 · laid 2026-09-20T22:26:16Z
- Model
- nbm-qmd · cycle 20260920T12:00Z
- 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
- d3692a71102bb1816a1567353db833da19d24fb47a563d07aee38a7f6f96f17c
- Machine
- JSON