Dallas's forecast for Thursday has moved 11°F warmer
78°F in the 20260927T18:00Z run, 88°F in the 20260929T12:00Z — the 2nd-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 14°F.
RevisionsTuesday, September 29, 2026Dallas, Texas
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Milepost 1246
Successive cycles do not merely refresh a forecast; they leave a trail. For Thursday, October 8 at 18Z in Dallas, that trail runs from 77.8°F in the 20260927T18:00Z cycle to 88.5°F in the 20260929T12:00Z — 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 · 2 of 8 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
14 °F | normal 10.7 °F current run |
- Milepost
- 1246 · laid 2026-09-29T22:25:16Z
- Model
- nbm-qmd · cycle 20260929T12:00Z
- 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
- 43fa77a42fde135131337437770dba5a5affa9b3f69a3187a224682aca4a7093