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Denver's forecast for Tuesday has moved 9°F warmer Subscribe

Denver's forecast for Tuesday has moved 9°F warmer

40°F in the 20261113T06:00Z run, 49°F in the 20261114T18:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 17°F.

JSON Milepost 1693

Successive cycles do not merely refresh a forecast; they leave a trail. For Tuesday, November 24 at 18Z in Denver, that trail runs from 39.9°F in the 20261113T06:00Z cycle to 49.4°F in the 20261114T18:00Z — a move of +9.5°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 Tuesday at 18Z
api.weather.city /v1/history (nbm-qmd)
9.5 °F normal 0.0 °F · 1 of 6
8 synoptic cycles
10th-to-90th percentile spread at that hour
api.weather.city (nbm-qmd)
17.2 °F normal 9.5 °F
current run
Next exit · Daily Weather · NOV 15Chicago's forecast for Monday has moved 8°F colder
Milepost
1693 · laid 2026-11-15T04:25:35Z
Model
nbm-qmd · cycle 20261114T18:00Z
Desk
revision v1
Method
the same valid time read from successive synoptic cycles; the move is last run minus first run
Stores
https://api.weather.city/v1/history
Tagged
I-500 Daily Weather · Denver, Colorado (39.739, -104.99) · by rule, at build
Digest
58c204120338f2e7741b1929dd50ec4367075e7bce3a60c905be4cb9f6446ddc