Denver, Colorado Revisions
MILEPOST 1403
Denver's forecast for Saturday has moved 14°F colder
68°F in the 20261014T18:00Z run, 54°F in the 20261016T12:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 21°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Saturday, October 24 at 18Z in Denver, that trail runs from 67.8°F in the 20261014T18:00Z cycle to 53.6°F in the 20261016T12:00Z — a move of -14.2°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 Saturday at 18Z api.weather.city /v1/history (nbm-qmd) |
-14.2 °F | normal 0.0 °F · 1 of 4 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
20.5 °F | normal 14.2 °F current run |
- Milepost
- 1403 · laid 2026-10-16T22:25:16Z
- Model
- nbm-qmd · cycle 20261016T12:00Z
- 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
- 3422c24d908e0e8b48190f23c2f52a12d8d39d6801f3de4dfe1203f2803dfada
- Machine
- JSON