Salt Lake City, Utah Revisions
MILEPOST 1051
Salt Lake City's forecast for Sunday has moved 14°F warmer
65°F in the 20260909T06:00Z run, 79°F in the 20260911T00:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 18°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 65.4°F in the 20260909T06:00Z cycle to 78.9°F in the 20260911T00:00Z — a move of +13.5°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) |
13.5 °F | normal 0.0 °F · 1 of 8 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
18.1 °F | normal 13.5 °F current run |
- Milepost
- 1051 · laid 2026-09-11T10:25:10Z
- Model
- nbm-qmd · cycle 20260911T00:00Z
- 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
- 4dc787e6ecd04217a76e237909c7a2eb8fee595241036700dc20356b47cac9c4
- Machine
- JSON