Salt Lake City, Utah Revisions
MILEPOST 1409
Salt Lake City's forecast for Thursday has moved 13°F warmer
50°F in the 20261015T06:00Z run, 63°F in the 20261017T00:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 17°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Thursday, October 22 at 18Z in Salt Lake City, that trail runs from 50.0°F in the 20261015T06:00Z cycle to 63.4°F in the 20261017T00:00Z — a move of +13.4°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 18Z api.weather.city /v1/history (nbm-qmd) |
13.4 °F | normal 0.0 °F · 1 of 4 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
16.8 °F | normal 13.4 °F current run |
- Milepost
- 1409 · laid 2026-10-17T10:25:18Z
- Model
- nbm-qmd · cycle 20261017T00:00Z
- 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
- 871877c77a647e1e3907d24c26bc98013bd8ec5bde3b2fb360676cd7b45e3532
- Machine
- JSON