Salt Lake City, Utah Revisions
MILEPOST 1412
Salt Lake City's forecast for Thursday has moved 16°F warmer
52°F in the 20261015T12:00Z run, 67°F in the 20261017T06:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 21°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 51.9°F in the 20261015T12:00Z cycle to 67.4°F in the 20261017T06:00Z — a move of +15.5°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 Thursday at 21Z api.weather.city /v1/history (nbm-qmd) |
15.5 °F | normal 0.0 °F · 1 of 3 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
20.9 °F | normal 15.5 °F current run |
- Milepost
- 1412 · laid 2026-10-17T16:25:18Z
- Model
- nbm-qmd · cycle 20261017T06:00Z
- 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
- ad0328c6b0fbb50c9b683bb5fae50d34a92b3e1b6825e048b8a604036cc6e352
- Machine
- JSON