Salt Lake City, Utah Revisions
MILEPOST 1057
Salt Lake City's forecast for Sunday has moved 13°F warmer
68°F in the 20260909T18:00Z run, 81°F in the 20260911T12:00Z — 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 14°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Sunday, September 13 at 18Z in Salt Lake City, that trail runs from 68.4°F in the 20260909T18:00Z cycle to 81.4°F in the 20260911T12:00Z — a move of +13.0°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 Sunday at 18Z api.weather.city /v1/history (nbm-qmd) |
13 °F | normal 0.0 °F · 3 of 8 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
14.1 °F | normal 13.0 °F current run |
- Milepost
- 1057 · laid 2026-09-11T22:25:11Z
- Model
- nbm-qmd · cycle 20260911T12:00Z
- 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
- a5f11c4721afcf7f35eda496ffcc6c11ece15ecdf006088e472fff2710e403e9
- Machine
- JSON