Nashville's forecast for Thursday has moved 9°F colder
43°F in the 20261109T18:00Z run, 34°F in the 20261111T12:00Z — the 3rd-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 16°F.
RevisionsWednesday, November 11, 2026Nashville, Tennessee
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Milepost 1663
Successive cycles do not merely refresh a forecast; they leave a trail. For Thursday, November 19 at 12Z in Nashville, that trail runs from 42.9°F in the 20261109T18:00Z cycle to 33.5°F in the 20261111T12:00Z — a move of -9.4°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 12Z api.weather.city /v1/history (nbm-qmd) |
-9.4 °F | normal 0.0 °F · 3 of 9 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
16 °F | normal 9.4 °F current run |
- Milepost
- 1663 · laid 2026-11-11T22:25:30Z
- Model
- nbm-qmd · cycle 20261111T12:00Z
- Desk
- revision v1
- Method
- the same valid time read from successive synoptic cycles; the move is last run minus first run
- Stores
- https://api.weather.city/v1/history
- Tagged
- I-500 Daily Weather · Nashville, Tennessee (36.163, -86.781) · by rule, at build
- Digest
- a59f95fd873422915bfac36646f003f1619fb6a66f179ac5e9276fd93f529e78