Salt Lake City, Utah Revisions
MILEPOST 1361
Salt Lake City's forecast for Wednesday has moved 15°F colder
66°F in the 20261010T06:00Z run, 50°F in the 20261011T18:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 27°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Wednesday, October 21 at 18Z in Salt Lake City, that trail runs from 65.7°F in the 20261010T06:00Z cycle to 50.3°F in the 20261011T18:00Z — a move of -15.4°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 Wednesday at 18Z api.weather.city /v1/history (nbm-qmd) |
-15.4 °F | normal 0.0 °F · 1 of 9 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
27.5 °F | normal 15.4 °F current run |
- Milepost
- 1361 · laid 2026-10-12T04:25:14Z
- Model
- nbm-qmd · cycle 20261011T18:00Z
- 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
- 1d69e6fd4ca9e5d4541ca00c312c0fdf17a0563b0b508db76e041499eec62468
- Machine
- JSON