Salt Lake City, Utah Revisions
MILEPOST 1283
Salt Lake City's forecast for Tuesday has moved 15°F colder
70°F in the 20261002T06:00Z run, 55°F in the 20261003T18:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 26°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Tuesday, October 13 at 18Z in Salt Lake City, that trail runs from 69.7°F in the 20261002T06:00Z cycle to 54.8°F in the 20261003T18:00Z — a move of -14.9°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 Tuesday at 18Z api.weather.city /v1/history (nbm-qmd) |
-14.9 °F | normal 0.0 °F · 1 of 10 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
26.3 °F | normal 14.9 °F current run |
- Milepost
- 1283 · laid 2026-10-04T04:25:13Z
- Model
- nbm-qmd · cycle 20261003T18:00Z
- 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
- 7419d159842b3f5c60f913fde4c060bbb59bf296790d6202a629369316a223ae
- Machine
- JSON