Nashville's forecast for Monday has moved 11°F colder
64°F in the 20261107T12:00Z run, 54°F in the 20261109T06:00Z — the 3rd-largest revision of the 7 cities on the roster that moved at all. The current run's 10th-to-90th percentile spread at that hour is 16°F.
RevisionsMonday, November 9, 2026Nashville, Tennessee
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Milepost 1638
Successive cycles do not merely refresh a forecast; they leave a trail. For Monday, November 16 at 18Z in Nashville, that trail runs from 64.5°F in the 20261107T12:00Z cycle to 53.7°F in the 20261109T06:00Z — a move of -10.7°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 Monday at 18Z api.weather.city /v1/history (nbm-qmd) |
-10.7 °F | normal 0.0 °F · 3 of 7 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
16 °F | normal 10.7 °F current run |
- Milepost
- 1638 · laid 2026-11-09T16:25:32Z
- Model
- nbm-qmd · cycle 20261109T06:00Z
- 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
- 0dac363d3e62143f8391a71bc4795f215638c7702675a731d45401cab9023946