Salt Lake City, Utah Revisions
MILEPOST 1067
Salt Lake City's forecast for Saturday has moved 10°F colder
67°F in the 20260911T00:00Z run, 57°F in the 20260912T12:00Z — the 3rd-largest revision of the 7 cities on the roster that moved at all. The current run's 10th-to-90th percentile spread at that hour is 13°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Saturday, September 19 at 09Z in Salt Lake City, that trail runs from 66.9°F in the 20260911T00:00Z cycle to 57.2°F in the 20260912T12:00Z — a move of -9.7°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 09Z api.weather.city /v1/history (nbm-qmd) |
-9.7 °F | normal 0.0 °F · 3 of 7 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
12.7 °F | normal 9.7 °F current run |
- Milepost
- 1067 · laid 2026-09-12T22:25:12Z
- Model
- nbm-qmd · cycle 20260912T12:00Z
- 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
- ed9d094187fba5749022f8b4784505bae75c01bbd9454bf9d9c50f25b2ccccb1
- Machine
- JSON