Nashville, Tennessee Revisions
MILEPOST 1315
Nashville's forecast for Saturday has moved 14°F colder
84°F in the 20261005T12:00Z run, 70°F in the 20261007T06:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 21°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Saturday, October 10 at 21Z in Nashville, that trail runs from 84.1°F in the 20261005T12:00Z cycle to 69.9°F in the 20261007T06:00Z — a move of -14.1°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 Saturday at 21Z api.weather.city /v1/history (nbm-qmd) |
-14.1 °F | normal 0.0 °F · 1 of 10 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
21 °F | normal 14.1 °F current run |
- Milepost
- 1315 · laid 2026-10-07T16:25:12Z
- Model
- nbm-qmd · cycle 20261007T06:00Z
- 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
- 19d028aaaa510cfa184026b0c6b59ccdbdb2e2a6cc2d1415097a0b32fd9a260d
- Machine
- JSON