Salt Lake City, Utah Revisions
MILEPOST 1274
Salt Lake City's forecast for Monday has moved 11°F colder
77°F in the 20261001T00:00Z run, 66°F in the 20261002T18:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 22°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Monday, October 12 at 00Z in Salt Lake City, that trail runs from 76.9°F in the 20261001T00:00Z cycle to 65.7°F in the 20261002T18:00Z — a move of -11.2°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 00Z api.weather.city /v1/history (nbm-qmd) |
-11.2 °F | normal 0.0 °F · 1 of 7 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
22 °F | normal 11.2 °F current run |
- Milepost
- 1274 · laid 2026-10-03T04:25:12Z
- Model
- nbm-qmd · cycle 20261002T18:00Z
- 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
- 16b36cd405145292022b678f54d69a9c00b5a869942ec59dc2f199fc24a9c8ad
- Machine
- JSON