Salt Lake City, Utah Revisions
MILEPOST 1041
Salt Lake City's forecast for Sunday has moved 11°F warmer
62°F in the 20260908T12:00Z run, 73°F in the 20260910T06:00Z — the largest revision of any city on the roster. 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 Sunday, September 13 at 12Z in Salt Lake City, that trail runs from 61.9°F in the 20260908T12:00Z cycle to 73.0°F in the 20260910T06:00Z — a move of +11.1°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) |
11.1 °F | normal 0.0 °F · 1 of 7 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
16.7 °F | normal 11.1 °F current run |
- Milepost
- 1041 · laid 2026-09-10T16:16:45Z
- Model
- nbm-qmd · cycle 20260910T06:00Z
- 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
- 9dd8843a1f2a3b0d0587c351b73e0354b059ec2d52456e2f2ff8d326e99bfd41
- Machine
- JSON