Edition 2026-09-28 The Ledger Archive API RSS Weather Trader
Milepost
1235

TheForecast Post

A chronicle of American weather and climate  ·  Monday, 28 September 2026

Kansas City, Missouri Revisions MILEPOST 1235

Kansas City's forecast for Friday has moved 8°F colder

75°F in the 20260926T00:00Z run, 67°F in the 20260928T00:00Z — the 3rd-largest revision of the 8 cities on the roster that moved at all. The current run's 10th-to-90th percentile spread at that hour is 15°F.

Successive cycles do not merely refresh a forecast; they leave a trail. For Friday, October 2 at 21Z in Kansas City, that trail runs from 74.6°F in the 20260926T00:00Z cycle to 66.7°F in the 20260928T00:00Z — a move of -7.9°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 Friday at 21Z
api.weather.city /v1/history (nbm-qmd)
-7.9 °F normal 0.0 °F · 3 of 8
8 synoptic cycles
10th-to-90th percentile spread at that hour
api.weather.city (nbm-qmd)
15.5 °F normal 7.9 °F
current run
Milepost
1235 · laid 2026-09-28T10:25:13Z
Model
nbm-qmd · cycle 20260928T00:00Z
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
a83880805a80c90858a2473da21599b1e5c5379b88e1d79aadc2112da0d8aae4
Machine
JSON