Denver, Colorado Revisions
MILEPOST 1454
Denver's forecast for Monday has moved 10°F colder
68°F in the 20261019T12:00Z run, 57°F in the 20261021T06:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 19°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Monday, October 26 at 21Z in Denver, that trail runs from 67.6°F in the 20261019T12:00Z cycle to 57.5°F in the 20261021T06:00Z — a move of -10.1°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 Monday at 21Z api.weather.city /v1/history (nbm-qmd) |
-10.1 °F | normal 0.0 °F · 1 of 4 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
19.2 °F | normal 10.1 °F current run |
- Milepost
- 1454 · laid 2026-10-21T16:25:23Z
- Model
- nbm-qmd · cycle 20261021T06:00Z
- 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
- 3a54d0acf8fdb9948e0109d903f85dc29fdcfa16d57895b8f9ff04277ce22604
- Machine
- JSON