Salt Lake City, Utah Revisions
MILEPOST 1448
Salt Lake City's forecast for Friday has moved 8°F warmer
57°F in the 20261018T18:00Z run, 65°F in the 20261020T12:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 9°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Friday, October 23 at 00Z in Salt Lake City, that trail runs from 56.8°F in the 20261018T18:00Z cycle to 65.2°F in the 20261020T12:00Z — a move of +8.4°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 Friday at 00Z api.weather.city /v1/history (nbm-qmd) |
8.4 °F | normal 0.0 °F · 1 of 9 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
9 °F | normal 8.4 °F current run |
- Milepost
- 1448 · laid 2026-10-20T22:25:19Z
- Model
- nbm-qmd · cycle 20261020T12:00Z
- 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
- 10f90673f0c6c8a217c43238450cf4ca5d58537d004f86323a43d9dfd9c63f7c
- Machine
- JSON