Minneapolis, Minnesota Revisions
MILEPOST 1090
Minneapolis's forecast for Friday has moved 9°F colder
74°F in the 20260913T06:00Z run, 65°F in the 20260915T00:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 20°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Friday, September 18 at 21Z in Minneapolis, that trail runs from 74.5°F in the 20260913T06:00Z cycle to 65.3°F in the 20260915T00:00Z — a move of -9.2°F across 8 runs.
The change sits well inside the run's own spread, which is the guidance converging rather than reversing.
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 Friday at 21Z api.weather.city /v1/history (nbm-qmd) |
-9.2 °F | normal 0.0 °F · 1 of 4 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
19.8 °F | normal 9.2 °F current run |
- Milepost
- 1090 · laid 2026-09-15T10:25:13Z
- Model
- nbm-qmd · cycle 20260915T00:00Z
- 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
- 10f0973bb6dfece9a0eaf96bdbbecf4833101183ae61958df34a7d01f653fcc9
- Machine
- JSON