Nashville, Tennessee Revisions
MILEPOST 1326
Nashville's forecast for Saturday has moved 18°F colder
84°F in the 20261006T12:00Z run, 67°F in the 20261008T06:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 16°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Saturday, October 10 at 18Z in Nashville, that trail runs from 84.4°F in the 20261006T12:00Z cycle to 66.7°F in the 20261008T06:00Z — a move of -17.7°F across 8 runs.
The change is larger than the run's own 10th-to-90th percentile spread — the guidance did not merely narrow, it moved off its previous position.
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 Saturday at 18Z api.weather.city /v1/history (nbm-qmd) |
-17.7 °F | normal 0.0 °F · 1 of 6 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
16.3 °F | normal 17.7 °F current run |
- Milepost
- 1326 · laid 2026-10-08T16:25:13Z
- Model
- nbm-qmd · cycle 20261008T06:00Z
- 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
- 7e0331e4d937b829daeaa4a6205b24bc455389c6b5a7313b2d4ca7c01273bd34
- Machine
- JSON