Salt Lake City, Utah Revisions
MILEPOST 1281
Salt Lake City's forecast for Tuesday has moved 9°F colder
70°F in the 20261002T06:00Z run, 61°F in the 20261003T12:00Z — 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 28°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 60.7°F in the 20261003T12:00Z — a move of -9.0°F across 8 runs.
The change sits well inside the run's own spread, which is the guidance converging rather than reversing.
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) |
-9 °F | normal 0.0 °F · 3 of 8 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
27.8 °F | normal 9.0 °F current run |
- Milepost
- 1281 · laid 2026-10-03T22:25:13Z
- Model
- nbm-qmd · cycle 20261003T12:00Z
- 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
- a9461ae97070b4362e9f2f2123f10298a0bdf93e252293961d5d3f9d7e0a710d
- Machine
- JSON