Dallas, Texas Revisions
MILEPOST 1199
Dallas's forecast for Friday has moved 11°F colder
92°F in the 20260922T18:00Z run, 80°F in the 20260924T12:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 20°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Friday, October 2 at 18Z in Dallas, that trail runs from 91.6°F in the 20260922T18:00Z cycle to 80.3°F in the 20260924T12:00Z — a move of -11.3°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 Friday at 18Z api.weather.city /v1/history (nbm-qmd) |
-11.3 °F | normal 0.0 °F · 1 of 6 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
19.6 °F | normal 11.3 °F current run |
- Milepost
- 1199 · laid 2026-09-24T22:25:15Z
- Model
- nbm-qmd · cycle 20260924T12:00Z
- 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
- 0ddb8b29b8ad6cdf6b1d2a680ef377a198be6e4b9b0c138d834a2b735eaf299f
- Machine
- JSON