Salt Lake City, Utah Revisions
MILEPOST 1405
Salt Lake City's forecast for Friday has moved 7°F colder
55°F in the 20261014T18:00Z run, 48°F in the 20261016T12:00Z — the 3rd-largest revision of the 4 cities on the roster that moved at all. 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 Friday, October 23 at 18Z in Salt Lake City, that trail runs from 55.3°F in the 20261014T18:00Z cycle to 48.2°F in the 20261016T12:00Z — a move of -7.1°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 Friday at 18Z api.weather.city /v1/history (nbm-qmd) |
-7.1 °F | normal 0.0 °F · 3 of 4 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
13.7 °F | normal 7.1 °F current run |
- Milepost
- 1405 · laid 2026-10-16T22:25:16Z
- Model
- nbm-qmd · cycle 20261016T12:00Z
- 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
- 69fd5c122d6243d93b2acc3c3f011628c05a858c77ff1201ae48239955ac99be
- Machine
- JSON