Edition 2026-11-06 The Ledger Archive API RSS Weather Trader
Milepost
1593

TheForecast Post

A chronicle of American weather and climate  ·  Friday, 6 November 2026

Atlanta, Georgia Revisions MILEPOST 1593

Atlanta's forecast for Saturday has moved 11°F colder

65°F in the 20261104T18:00Z run, 54°F in the 20261106T12:00Z — the 3rd-largest revision of the 6 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 Saturday, November 14 at 18Z in Atlanta, that trail runs from 65.0°F in the 20261104T18:00Z cycle to 54.2°F in the 20261106T12:00Z — a move of -10.8°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 18Z
api.weather.city /v1/history (nbm-qmd)
-10.8 °F normal 0.0 °F · 3 of 6
8 synoptic cycles
10th-to-90th percentile spread at that hour
api.weather.city (nbm-qmd)
21.2 °F normal 10.8 °F
current run
Milepost
1593 · laid 2026-11-06T22:25:26Z
Model
nbm-qmd · cycle 20261106T12:00Z
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
285bf6b7ec7fe5830f19e989e7eebd1a296e09c120b9f19d6946e101f446bb47
Machine
JSON