Atlanta, Georgia Revisions
MILEPOST 1515
Atlanta's forecast for Sunday has moved 10°F colder
72°F in the 20261026T06:00Z run, 62°F in the 20261028T00:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 14°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 72.4°F in the 20261026T06:00Z cycle to 62.3°F in the 20261028T00:00Z — a move of -10.1°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) |
-10.1 °F | normal 0.0 °F · 1 of 6 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
14.2 °F | normal 10.1 °F current run |
- Milepost
- 1515 · laid 2026-10-28T09:25:25Z
- Model
- nbm-qmd · cycle 20261028T00:00Z
- 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
- a0daba730f58e5e6715ca73b907d7c20449040d0c98c04589157963c78782bfb
- Machine
- JSON