Nashville, Tennessee Revisions
MILEPOST 1548
Nashville's forecast for Wednesday has moved 8°F colder
45°F in the 20261031T00:00Z run, 37°F in the 20261031T06:00Z — 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 19°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Wednesday, November 11 at 12Z in Nashville, that trail runs from 45.1°F in the 20261031T00:00Z cycle to 37.5°F in the 20261031T06:00Z — a move of -7.6°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 Wednesday at 12Z api.weather.city /v1/history (nbm-qmd) |
-7.6 °F | normal 0.0 °F · 2 of 4 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
18.6 °F | normal 7.6 °F current run |
- Milepost
- 1548 · laid 2026-10-31T16:25:23Z
- Model
- nbm-qmd · cycle 20261031T06:00Z
- 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
- b8a259e7b9015301831a257e9cc56bbacfe3c69295ba18a16b08ac2a75b8f3ef
- Machine
- JSON