Salt Lake City, Utah Revisions
MILEPOST 1226
Salt Lake City's forecast for Saturday has moved 13°F warmer
65°F in the 20260925T12:00Z run, 78°F in the 20260927T00:00Z — 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 12°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 78.2°F in the 20260927T00:00Z — a move of +12.8°F across 8 runs.
The change is larger than the run's own 10th-to-90th percentile spread — the guidance did not merely narrow, it moved off its previous position.
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) |
12.8 °F | normal 0.0 °F · 3 of 9 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
12 °F | normal 12.8 °F current run |
- Milepost
- 1226 · laid 2026-09-27T10:25:13Z
- Model
- nbm-qmd · cycle 20260927T00:00Z
- 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
- 50658dc4dc37f9b54943060f4c2458c0d7558e6f369437d2a08a61378ee9db83
- Machine
- JSON