Nashville, Tennessee Revisions
MILEPOST 1210
Nashville's forecast for Tuesday has moved 13°F colder
83°F in the 20260924T12:00Z run, 70°F in the 20260925T06:00Z — the 2nd-largest revision of the 6 cities on the roster that moved at all. 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 Tuesday, October 6 at 00Z in Nashville, that trail runs from 82.9°F in the 20260924T12:00Z cycle to 69.5°F in the 20260925T06:00Z — a move of -13.3°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 Tuesday at 00Z api.weather.city /v1/history (nbm-qmd) |
-13.3 °F | normal 0.0 °F · 2 of 6 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
20.8 °F | normal 13.3 °F current run |
- Milepost
- 1210 · laid 2026-09-25T16:25:16Z
- Model
- nbm-qmd · cycle 20260925T06:00Z
- 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
- ec92b5c7010695566af692c0c1ea998b68d611319119d9161a1184f68a635210
- Machine
- JSON