Nashville, Tennessee Revisions
MILEPOST 1074
Nashville's forecast for Monday has moved 11°F warmer
61°F in the 20260911T06:00Z run, 72°F in the 20260913T06:00Z — the 2nd-largest revision of the 9 cities on the roster that moved at all. The current run's 10th-to-90th percentile spread at that hour is 14°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Monday, September 21 at 12Z in Nashville, that trail runs from 60.8°F in the 20260911T06:00Z cycle to 71.8°F in the 20260913T06:00Z — a move of +11.0°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 Monday at 12Z api.weather.city /v1/history (nbm-qmd) |
11 °F | normal 0.0 °F · 2 of 9 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
14.2 °F | normal 11.0 °F current run |
- Milepost
- 1074 · laid 2026-09-13T17:25:12Z
- Model
- nbm-qmd · cycle 20260913T06:00Z
- 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
- 0478ea23100d3d2dfc80f44453cde267b94312ff85410421628640bf434a5fe1
- Machine
- JSON