Salt Lake City, Utah Revisions
MILEPOST 1415
Salt Lake City's forecast for Thursday has moved 15°F warmer
53°F in the 20261015T18:00Z run, 68°F in the 20261017T12:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 14°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Thursday, October 22 at 21Z in Salt Lake City, that trail runs from 53.3°F in the 20261015T18:00Z cycle to 68.0°F in the 20261017T12:00Z — a move of +14.7°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 Thursday at 21Z api.weather.city /v1/history (nbm-qmd) |
14.7 °F | normal 0.0 °F · 1 of 4 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
13.8 °F | normal 14.7 °F current run |
- Milepost
- 1415 · laid 2026-10-17T22:25:17Z
- Model
- nbm-qmd · cycle 20261017T12:00Z
- 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
- 6a8e095e4083639414660b898cfc398b529b3ca3361523c46291ae184450b303
- Machine
- JSON