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Milepost
1502

TheForecast Post

A chronicle of American weather and climate  ·  Monday, 26 October 2026

Salt Lake City, Utah Revisions MILEPOST 1502

Salt Lake City's forecast for Wednesday has moved 6°F warmer

51°F in the 20261024T06:00Z run, 58°F in the 20261026T00:00Z — the 3rd-largest revision of the 3 cities on the roster that moved at all. The current run's 10th-to-90th percentile spread at that hour is 6°F.

Successive cycles do not merely refresh a forecast; they leave a trail. For Wednesday, October 28 at 00Z in Salt Lake City, that trail runs from 51.3°F in the 20261024T06:00Z cycle to 57.6°F in the 20261026T00:00Z — a move of +6.4°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 Wednesday at 00Z
api.weather.city /v1/history (nbm-qmd)
6.4 °F normal 0.0 °F · 3 of 3
8 synoptic cycles
10th-to-90th percentile spread at that hour
api.weather.city (nbm-qmd)
6.5 °F normal 6.4 °F
current run
Milepost
1502 · laid 2026-10-26T10:25:21Z
Model
nbm-qmd · cycle 20261026T00:00Z
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
d13d801c46ba699ef6371e1cf537fe192cc00bdd5e4f439acd8b585e38901238
Machine
JSON