Nashville, Tennessee Revisions
MILEPOST 1297
Nashville's forecast for Sunday has moved 8°F colder
83°F in the 20261003T18:00Z run, 74°F in the 20261005T12:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 18°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Sunday, October 11 at 21Z in Nashville, that trail runs from 82.5°F in the 20261003T18:00Z cycle to 74.2°F in the 20261005T12:00Z — a move of -8.3°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 Sunday at 21Z api.weather.city /v1/history (nbm-qmd) |
-8.3 °F | normal 0.0 °F · 1 of 4 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
17.7 °F | normal 8.3 °F current run |
- Milepost
- 1297 · laid 2026-10-05T22:25:12Z
- Model
- nbm-qmd · cycle 20261005T12:00Z
- 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
- 7232882ee70738b64ebfa6357e72683bd282dcfa2bf339a86ab58f0c817e146a
- Machine
- JSON