Salt Lake City, Utah Revisions
MILEPOST 1429
Salt Lake City's forecast for Thursday has moved 9°F warmer
58°F in the 20261016T18:00Z run, 66°F in the 20261018T12:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 14°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Thursday, October 22 at 21Z in Salt Lake City, that trail runs from 57.6°F in the 20261016T18:00Z cycle to 66.5°F in the 20261018T12:00Z — a move of +8.9°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 Thursday at 21Z api.weather.city /v1/history (nbm-qmd) |
8.9 °F | normal 0.0 °F · 1 of 6 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
14.4 °F | normal 8.9 °F current run |
- Milepost
- 1429 · laid 2026-10-18T22:25:20Z
- Model
- nbm-qmd · cycle 20261018T12:00Z
- 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
- 796958ecfb91d8817ad457eb304286244961a91a875e77a9a95ca5d70605d578
- Machine
- JSON