Salt Lake City, Utah Revisions
MILEPOST 1217
Salt Lake City's forecast for Saturday has moved 11°F warmer
65°F in the 20260925T12:00Z run, 76°F in the 20260926T00:00Z — the 3rd-largest revision of the 8 cities on the roster that moved at all. The current run's 10th-to-90th percentile spread at that hour is 17°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 76.3°F in the 20260926T00:00Z — a move of +10.9°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) |
10.9 °F | normal 0.0 °F · 3 of 8 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
17.2 °F | normal 10.9 °F current run |
- Milepost
- 1217 · laid 2026-09-26T10:25:12Z
- Model
- nbm-qmd · cycle 20260926T00:00Z
- 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
- b557e3f9e6d1fe9727d516445fcd6fec28aea0d3cd4c28ce620154c9996f52e3
- Machine
- JSON