Atlanta, Georgia Revisions
MILEPOST 1523
Atlanta's forecast for Sunday has moved 9°F colder
70°F in the 20261027T00:00Z run, 61°F in the 20261028T18:00Z — the 2nd-largest revision of the 8 cities on the roster that moved at all. The current run's 10th-to-90th percentile spread at that hour is 13°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Sunday, November 1 at 21Z in Atlanta, that trail runs from 69.9°F in the 20261027T00:00Z cycle to 61.2°F in the 20261028T18:00Z — a move of -8.6°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 Sunday at 21Z api.weather.city /v1/history (nbm-qmd) |
-8.6 °F | normal 0.0 °F · 2 of 8 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
13.1 °F | normal 8.6 °F current run |
- Milepost
- 1523 · laid 2026-10-29T04:25:27Z
- Model
- nbm-qmd · cycle 20261028T18:00Z
- 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
- 5441885710081e34a9895d53175364d278238f30f43ee9d59a41be5b3c0c588a
- Machine
- JSON