Atlanta, Georgia Revisions
MILEPOST 1419
Atlanta's forecast for Sunday has moved 8°F colder
56°F in the 20261016T00:00Z run, 49°F in the 20261017T18:00Z — the 2nd-largest revision of the 5 cities on the roster that moved at all. The current run's 10th-to-90th percentile spread at that hour is 9°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Sunday, October 25 at 12Z in Atlanta, that trail runs from 56.2°F in the 20261016T00:00Z cycle to 48.6°F in the 20261017T18:00Z — a move of -7.6°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 12Z api.weather.city /v1/history (nbm-qmd) |
-7.6 °F | normal 0.0 °F · 2 of 5 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
8.8 °F | normal 7.6 °F current run |
- Milepost
- 1419 · laid 2026-10-18T04:25:17Z
- Model
- nbm-qmd · cycle 20261017T18:00Z
- 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
- a16c0a3a238e1afc2f4a49db922d15ec3dd679a9c0b2494b398fac679021e79f
- Machine
- JSON