New York, New York Revisions
MILEPOST 1115
New York's forecast for Tuesday has moved 9°F colder
72°F in the 20260915T06:00Z run, 63°F in the 20260916T18:00Z — the 2nd-largest revision of the 4 cities on the roster that moved at all. The current run's 10th-to-90th percentile spread at that hour is 10°F.
Successive cycles do not merely refresh a forecast; they leave a trail. For Tuesday, September 22 at 18Z in New York, that trail runs from 71.9°F in the 20260915T06:00Z cycle to 62.6°F in the 20260916T18:00Z — a move of -9.3°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 18Z api.weather.city /v1/history (nbm-qmd) |
-9.3 °F | normal 0.0 °F · 2 of 4 8 synoptic cycles |
| 10th-to-90th percentile spread at that hour api.weather.city (nbm-qmd) |
10.2 °F | normal 9.3 °F current run |
- Milepost
- 1115 · laid 2026-09-17T10:25:25Z
- Model
- nbm-qmd · cycle 20260916T18:00Z
- 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
- 607dc9535f6b828c1c3055147859f82b4598be82f8be1455bcfee9dcb763ae55
- Machine
- JSON