Dallas, Texas Revisions
MILEPOST 1224
Dallas's forecast for Saturday has moved 15°F colder
95°F in the 20260925T12:00Z run, 80°F in the 20260927T00:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 21°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Saturday, October 3 at 21Z in Dallas, that trail runs from 95.1°F in the 20260925T12:00Z cycle to 80.3°F in the 20260927T00:00Z — a move of -14.8°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 Saturday at 21Z api.weather.city /v1/history (nbm-qmd) |
-14.8 °F | normal 0.0 °F · 1 of 9 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
21.4 °F | normal 14.8 °F current run |
- Milepost
- 1224 · laid 2026-09-27T10:25:13Z
- Model
- nbm-qmd · cycle 20260927T00:00Z
- 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
- 750bbff6d6f7b88a6157d2c5da3b7a5eaaa4450d49b7466bbd12ba14bc2670b9
- Machine
- JSON