Dallas's forecast for Thursday has moved 10°F colder
88°F in the 20260927T06:00Z run, 78°F in the 20260927T18:00Z — the 3rd-largest revision of the 7 cities on the roster that moved at all. The current run's 10th-to-90th percentile spread at that hour is 23°F.
RevisionsMonday, September 28, 2026Dallas, Texas
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Milepost 1232
Successive cycles do not merely refresh a forecast; they leave a trail. For Thursday, October 8 at 18Z in Dallas, that trail runs from 87.6°F in the 20260927T06:00Z cycle to 77.8°F in the 20260927T18:00Z — a move of -9.8°F across 8 runs.
The change sits well inside the run's own spread, which is the guidance converging rather than reversing.
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) |
-9.8 °F | normal 0.0 °F · 3 of 7 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
22.6 °F | normal 9.8 °F current run |
- Milepost
- 1232 · laid 2026-09-28T04:25:13Z
- Model
- nbm-qmd · cycle 20260927T18:00Z
- Desk
- revision v1
- Method
- the same valid time read from successive synoptic cycles; the move is last run minus first run
- Stores
- https://api.weather.city/v1/history
- Tagged
- I-500 Daily Weather · Dallas, Texas (32.777, -96.797) · by rule, at build
- Digest
- f2f7b4ae2eae0563b30798c8b71688cac1430da64c7391f20e091aef6ad75584