Dallas's forecast for Friday has moved 10°F warmer
78°F in the 20260928T06:00Z run, 88°F in the 20260929T00:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 16°F.
RevisionsTuesday, September 29, 2026Dallas, Texas
JSON
Milepost 1241
Successive cycles do not merely refresh a forecast; they leave a trail. For Friday, October 9 at 18Z in Dallas, that trail runs from 78.3°F in the 20260928T06:00Z cycle to 88.2°F in the 20260929T00:00Z — a move of +9.9°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 Friday at 18Z api.weather.city /v1/history (nbm-qmd) |
9.9 °F | normal 0.0 °F · 1 of 6 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
16.3 °F | normal 9.9 °F current run |
- Milepost
- 1241 · laid 2026-09-29T10:25:14Z
- Model
- nbm-qmd · cycle 20260929T00:00Z
- 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
- fe2b32969888307c7f88fc56e8380224efaa7b0a695970591c278094e2831b63