Salt Lake City, Utah Revisions
MILEPOST 1277
Salt Lake City's forecast for Monday has moved 10°F colder
75°F in the 20261001T06:00Z run, 65°F in the 20261003T00:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 21°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Monday, October 12 at 00Z in Salt Lake City, that trail runs from 75.4°F in the 20261001T06:00Z cycle to 65.4°F in the 20261003T00:00Z — a move of -9.9°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 Monday at 00Z api.weather.city /v1/history (nbm-qmd) |
-9.9 °F | normal 0.0 °F · 1 of 9 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
20.8 °F | normal 9.9 °F current run |
- Milepost
- 1277 · laid 2026-10-03T10:25:11Z
- Model
- nbm-qmd · cycle 20261003T00:00Z
- 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
- 20d1c2c1b16ff7da23416df0eaf77990dac2128b43a120ec2868642453fe4a75
- Machine
- JSON