Denver, Colorado Revisions
MILEPOST 1050
Denver's forecast for Wednesday has moved 11°F colder
81°F in the 20260909T00:00Z run, 70°F in the 20260910T18:00Z — the 3rd-largest revision of the 8 cities on the roster that moved at all. 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 Wednesday, September 16 at 00Z in Denver, that trail runs from 81.0°F in the 20260909T00:00Z cycle to 70.1°F in the 20260910T18:00Z — a move of -10.9°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 Wednesday at 00Z api.weather.city /v1/history (nbm-qmd) |
-10.9 °F | normal 0.0 °F · 3 of 8 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
18.3 °F | normal 10.9 °F current run |
- Milepost
- 1050 · laid 2026-09-11T04:25:13Z
- Model
- nbm-qmd · cycle 20260910T18:00Z
- 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
- 8e46399af0a6ffc645a3f6005f0d3534d061e2e01ae7cd08831f87bc07ebe390
- Machine
- JSON