Nashville, Tennessee Revisions
MILEPOST 1216
Nashville's forecast for Thursday has moved 11°F warmer
80°F in the 20260924T06:00Z run, 91°F in the 20260926T00:00Z — 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 19°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Thursday, October 1 at 18Z in Nashville, that trail runs from 79.5°F in the 20260924T06:00Z cycle to 90.9°F in the 20260926T00:00Z — a move of +11.3°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 Thursday at 18Z api.weather.city /v1/history (nbm-qmd) |
11.3 °F | normal 0.0 °F · 2 of 8 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
18.5 °F | normal 11.3 °F current run |
- Milepost
- 1216 · laid 2026-09-26T10:25:12Z
- Model
- nbm-qmd · cycle 20260926T00:00Z
- 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
- 3777c59f64af8ce077fb1d6f45f4a11bb10f30a599cd2230d524ea14da805ece
- Machine
- JSON