Nashville, Tennessee Revisions
MILEPOST 1338
Nashville's forecast for Wednesday has moved 12°F warmer
75°F in the 20261007T12:00Z run, 87°F in the 20261009T06:00Z — the 3rd-largest revision of the 10 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, October 14 at 21Z in Nashville, that trail runs from 75.2°F in the 20261007T12:00Z cycle to 87.2°F in the 20261009T06:00Z — a move of +12.1°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 Wednesday at 21Z api.weather.city /v1/history (nbm-qmd) |
12.1 °F | normal 0.0 °F · 3 of 10 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
18.8 °F | normal 12.1 °F current run |
- Milepost
- 1338 · laid 2026-10-09T16:25:16Z
- Model
- nbm-qmd · cycle 20261009T06:00Z
- 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
- 22b99eeb64bb6bc88009f97edb102ce1efbadd453e36b4895b78e014f20fd0f5
- Machine
- JSON