Nashville's forecast for Monday has moved 8°F colder
46°F in the 20261112T00:00Z run, 37°F in the 20261113T12:00Z — the 2nd-largest revision of the 4 cities on the roster that moved at all. The current run's 10th-to-90th percentile spread at that hour is 29°F.
RevisionsFriday, November 13, 2026Nashville, Tennessee
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Milepost 1684
Successive cycles do not merely refresh a forecast; they leave a trail. For Monday, November 23 at 12Z in Nashville, that trail runs from 45.8°F in the 20261112T00:00Z cycle to 37.5°F in the 20261113T12:00Z — a move of -8.4°F across 8 runs.
The change sits well inside the run's own spread, which is the guidance converging rather than reversing.
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) |
-8.4 °F | normal 0.0 °F · 2 of 4 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
29.3 °F | normal 8.4 °F current run |
- Milepost
- 1684 · laid 2026-11-13T22:25:32Z
- Model
- nbm-qmd · cycle 20261113T12:00Z
- 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
- 5b3175d429e48446c3f3340f43fc572baa2320f3e8c45c2ad4d1d82c405453c3