Edition 2026-10-06 The Ledger Archive API RSS Weather Trader
Milepost
1307

TheForecast Post

A chronicle of American weather and climate  ·  Tuesday, 6 October 2026

Dallas, Texas Revisions MILEPOST 1306

Dallas's forecast for Thursday has moved 12°F warmer

63°F in the 20261004T12:00Z run, 74°F in the 20261006T06:00Z — the 2nd-largest revision of the 10 cities on the roster that moved at all. 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 Thursday, October 15 at 12Z in Dallas, that trail runs from 62.8°F in the 20261004T12:00Z cycle to 74.4°F in the 20261006T06:00Z — a move of +11.6°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 12Z
api.weather.city /v1/history (nbm-qmd)
11.6 °F normal 0.0 °F · 2 of 10
8 synoptic cycles
10th-to-90th percentile spread at that hour
api.weather.city (nbm-qmd)
20.7 °F normal 11.6 °F
current run
Milepost
1306 · laid 2026-10-06T16:25:13Z
Model
nbm-qmd · cycle 20261006T06:00Z
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
1f601bb0133511859bff171d2def38c3c373042e40200fed3b36f31dd6d27800
Machine
JSON