Edition 2026-10-27 The Ledger Archive API RSS Weather Trader
Milepost
1509

TheForecast Post

A chronicle of American weather and climate  ·  Tuesday, 27 October 2026

HII The Ledger MILEPOST 1509

Guidance has run 5.4°F warm at HII for a month

The mean signed residual across 676 pairs is +5.35°F, against +0.18°F averaged over all 85 stations with enough samples to score. A bias is not an error the reader can ignore — it is one they can correct for.

Mean absolute error says how far the forecast lands from the observation; the signed mean says which side it lands on. At HII over September 27–October 27, 2026, it lands +5.35°F from the report, across 676 pairs — the largest standing lean of any of the 85 stations currently carrying enough samples.

ASOS reports at :53 and the forecast is stamped on the hour, so a forecast is paired with the nearest observation within 30 minutes and otherwise left unscored.

The numbers in this piece, with what they are measured against
mean signed residual at HII
Forecast Network verification ledger
5.35 °F normal 0.2 °F · 1 of 85
September 27–October 27, 2026
Milepost
1509 · laid 2026-10-27T18:25:23Z
Desk
ledger v1
Method
ASOS reports at :53 and the forecast is stamped on the hour, so a forecast is paired with the nearest observation within 30 minutes and otherwise left unscored.
Source
/home/maue/forecastpoints/data/verify/2026-09.ndjson
/home/maue/forecastpoints/data/verify/2026-10.ndjson
Digest
a9fbad3ffa1ba61ccc64ae756b5ad4079af63ae6b632d2a50bccdca27805199a
Machine
JSON