Denver, Colorado Revisions
MILEPOST 1418
Denver's forecast for Sunday has moved 10°F colder
67°F in the 20261016T00:00Z run, 57°F in the 20261017T18:00Z — 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 Sunday, October 25 at 00Z in Denver, that trail runs from 67.2°F in the 20261016T00:00Z cycle to 57.2°F in the 20261017T18:00Z — a move of -9.9°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 Sunday at 00Z api.weather.city /v1/history (nbm-qmd) |
-9.9 °F | normal 0.0 °F · 1 of 5 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
18.7 °F | normal 9.9 °F current run |
- Milepost
- 1418 · laid 2026-10-18T04:25:17Z
- Model
- nbm-qmd · cycle 20261017T18:00Z
- 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
- bc11f35ce5697842c477f05977aea986dac36c988a03602f697122d5436ce4c9
- Machine
- JSON