Nashville, Tennessee Revisions
MILEPOST 1060
Nashville's forecast for Friday has moved 13°F warmer
81°F in the 20260910T12:00Z run, 93°F in the 20260911T18:00Z — the 3rd-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 17°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Friday, September 18 at 21Z in Nashville, that trail runs from 80.7°F in the 20260910T12:00Z cycle to 93.4°F in the 20260911T18:00Z — a move of +12.7°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 Friday at 21Z api.weather.city /v1/history (nbm-qmd) |
12.7 °F | normal 0.0 °F · 3 of 8 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
17.5 °F | normal 12.7 °F current run |
- Milepost
- 1060 · laid 2026-09-12T04:25:14Z
- Model
- nbm-qmd · cycle 20260911T18:00Z
- 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
- ecac42c2eedb3782ae8cd66457c7ab73500b04c9490c1622041bb219195f0a98
- Machine
- JSON