Salt Lake City, Utah Revisions
MILEPOST 1033
Salt Lake City's forecast for Sunday has moved 12°F warmer
60°F in the 20260908T06:00Z run, 72°F in the 20260910T00:00Z — the largest revision of any city on the roster. 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 Sunday, September 13 at 12Z in Salt Lake City, that trail runs from 60.2°F in the 20260908T06:00Z cycle to 72.4°F in the 20260910T00:00Z — 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 Sunday at 12Z api.weather.city /v1/history (nbm-qmd) |
12.2 °F | normal 0.0 °F · 1 of 6 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
15.6 °F | normal 12.2 °F current run |
- Milepost
- 1033 · laid 2026-09-10T12:29:55Z
- Model
- nbm-qmd · cycle 20260910T00:00Z
- 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
- ec90629f51f1383be7c89a3fbceaf1dcffeb5689bdc59e9dbc15cfa3ea659b82
- Machine
- JSON