New York, New York Revisions
MILEPOST 1184
New York's forecast for Friday has moved 9°F warmer
60°F in the 20260921T00:00Z run, 69°F in the 20260922T18:00Z — 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 17°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Friday, September 25 at 18Z in New York, that trail runs from 60.1°F in the 20260921T00:00Z cycle to 68.7°F in the 20260922T18:00Z — a move of +8.6°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 Friday at 18Z api.weather.city /v1/history (nbm-qmd) |
8.6 °F | normal 0.0 °F · 2 of 6 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
17.2 °F | normal 8.6 °F current run |
- Milepost
- 1184 · laid 2026-09-23T04:25:16Z
- Model
- nbm-qmd · cycle 20260922T18:00Z
- 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
- 4bd09c6d9bd154ea531dad66289715d035a1da74f15501e8d81977f410c925f1
- Machine
- JSON