Atlanta, Georgia Revisions
MILEPOST 1244
Atlanta's forecast for Tuesday has moved 8°F colder
68°F in the 20260928T00:00Z run, 60°F in the 20260929T06:00Z — 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 10°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Tuesday, October 6 at 09Z in Atlanta, that trail runs from 67.9°F in the 20260928T00:00Z cycle to 59.6°F in the 20260929T06:00Z — a move of -8.3°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 Tuesday at 09Z api.weather.city /v1/history (nbm-qmd) |
-8.3 °F | normal 0.0 °F · 3 of 6 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
9.5 °F | normal 8.3 °F current run |
- Milepost
- 1244 · laid 2026-09-29T16:25:13Z
- Model
- nbm-qmd · cycle 20260929T06:00Z
- 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
- 5b19e87c2f7bf63f0b47a676c9948149f96e924b16bfed76f626cf368dd3ae52
- Machine
- JSON