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Milepost
1108

TheForecast Post

A chronicle of American weather and climate  ·  Wednesday, 16 September 2026

Kansas City, Missouri Revisions MILEPOST 1065

Kansas City's forecast for Monday has moved 11°F colder

82°F in the 20260910T18:00Z run, 71°F in the 20260912T12:00Z — the largest revision of any city on the roster. The current run's 10th-to-90th percentile spread at that hour is 12°F.

Successive cycles do not merely refresh a forecast; they leave a trail. For Monday, September 14 at 00Z in Kansas City, that trail runs from 82.0°F in the 20260910T18:00Z cycle to 71.3°F in the 20260912T12:00Z — a move of -10.6°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 Monday at 00Z
api.weather.city /v1/history (nbm-qmd)
-10.6 °F normal 0.0 °F · 1 of 7
8 synoptic cycles
10th-to-90th percentile spread at that hour
api.weather.city (nbm-qmd)
11.7 °F normal 10.6 °F
current run
Milepost
1065 · laid 2026-09-12T22:25:12Z
Model
nbm-qmd · cycle 20260912T12:00Z
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
f8de81fd0aee56034b5355394dc9202349bb9e05895708fa38fd1891151ab668
Machine
JSON