Dallas, Texas Revisions
MILEPOST 1167
Dallas's forecast for Thursday has moved 11°F colder
92°F in the 20260920T06:00Z run, 81°F in the 20260921T06:00Z — 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 Thursday, October 1 at 18Z in Dallas, that trail runs from 91.5°F in the 20260920T06:00Z cycle to 80.8°F in the 20260921T06:00Z — a move of -10.7°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 Thursday at 18Z api.weather.city /v1/history (nbm-qmd) |
-10.7 °F | normal 0.0 °F · 1 of 5 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
19.6 °F | normal 10.7 °F current run |
- Milepost
- 1167 · laid 2026-09-21T16:25:13Z
- Model
- nbm-qmd · cycle 20260921T06:00Z
- 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
- 7736cfe6f8b19ce7b81618c4fd2c3b54948546b5f31f1a175650e4a4401a78d6
- Machine
- JSON