New York, New York Revisions
MILEPOST 1430
New York's forecast for Saturday has moved 9°F colder
55°F in the 20261016T18:00Z run, 47°F in the 20261018T12:00Z — 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 11°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Saturday, October 24 at 12Z in New York, that trail runs from 55.2°F in the 20261016T18:00Z cycle to 46.6°F in the 20261018T12:00Z — a move of -8.6°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 12Z 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) |
10.6 °F | normal 8.6 °F current run |
- Milepost
- 1430 · laid 2026-10-18T22:25:20Z
- Model
- nbm-qmd · cycle 20261018T12:00Z
- 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
- 5b503c4171a78a95d9d6ae89c7d3a8cb75e7cab7ea488680dd6a23db4f1e8984
- Machine
- JSON