Dallas, Texas Revisions
MILEPOST 1186
Dallas's forecast for Saturday has moved 8°F colder
89°F in the 20260921T12:00Z run, 81°F in the 20260923T00:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 19°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Saturday, October 3 at 00Z in Dallas, that trail runs from 89.2°F in the 20260921T12:00Z cycle to 80.9°F in the 20260923T00:00Z — a move of -8.3°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 Saturday at 00Z api.weather.city /v1/history (nbm-qmd) |
-8.3 °F | normal 0.0 °F · 1 of 5 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
19.4 °F | normal 8.3 °F current run |
- Milepost
- 1186 · laid 2026-09-23T10:25:25Z
- Model
- nbm-qmd · cycle 20260923T00:00Z
- 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
- 3bfacaafb1076e3581dc9ba13dcc5ee1228ff92ccec1e43277d1c8ea14559b36
- Machine
- JSON