Nashville, Tennessee Revisions
MILEPOST 1321
Nashville's forecast for Saturday has moved 17°F colder
85°F in the 20261006T00:00Z run, 68°F in the 20261007T18:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 18°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Saturday, October 10 at 21Z in Nashville, that trail runs from 85.2°F in the 20261006T00:00Z cycle to 68.5°F in the 20261007T18:00Z — a move of -16.8°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 21Z api.weather.city /v1/history (nbm-qmd) |
-16.8 °F | normal 0.0 °F · 1 of 10 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
17.6 °F | normal 16.8 °F current run |
- Milepost
- 1321 · laid 2026-10-08T04:25:12Z
- Model
- nbm-qmd · cycle 20261007T18:00Z
- 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
- 17168e94dd73476bd9f697bc486c8baebe411be71dba66403acd44bcd8df6c34
- Machine
- JSON