Denver, Colorado Revisions
MILEPOST 1505
Denver's forecast for Monday has moved 12°F colder
63°F in the 20261025T12:00Z run, 51°F in the 20261026T18:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 18°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Monday, November 2 at 21Z in Denver, that trail runs from 63.0°F in the 20261025T12:00Z cycle to 51.3°F in the 20261026T18:00Z — a move of -11.8°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) |
-11.8 °F | normal 0.0 °F · 1 of 8 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
18.5 °F | normal 11.8 °F current run |
- Milepost
- 1505 · laid 2026-10-27T04:25:22Z
- Model
- nbm-qmd · cycle 20261026T18:00Z
- 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
- 0be51254dbe754ff30f15bde6b524cc5182b281d895ea4ca6a42219ad3eb4206
- Machine
- JSON