Salt Lake City, Utah Revisions
MILEPOST 1219
Salt Lake City's forecast for Saturday has moved 12°F warmer
65°F in the 20260925T12:00Z run, 78°F in the 20260926T06:00Z — the 3rd-largest revision of the 9 cities on the roster that moved at all. The current run's 10th-to-90th percentile spread at that hour is 16°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Saturday, October 3 at 21Z in Salt Lake City, that trail runs from 65.4°F in the 20260925T12:00Z cycle to 77.6°F in the 20260926T06:00Z — a move of +12.2°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 Saturday at 21Z api.weather.city /v1/history (nbm-qmd) |
12.2 °F | normal 0.0 °F · 3 of 9 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
16.5 °F | normal 12.2 °F current run |
- Milepost
- 1219 · laid 2026-09-26T16:25:13Z
- Model
- nbm-qmd · cycle 20260926T06:00Z
- 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
- 8e727e539729011c1468b81d922a1f1ce8c0fd8c954cebc2c89589daaa4fe217
- Machine
- JSON