YKM The Ledger
MILEPOST 1068
Guidance has run 2.5°F warm at YKM for a month
The mean signed residual across 4,555 pairs is +2.53°F, against +0.01°F averaged over all 77 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 YKM over August 13–September 12, 2026, it lands +2.53°F from the report, across 4,555 pairs — the largest standing lean of any of the 77 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 YKM Forecast Network verification ledger |
2.53 °F | normal 0.0 °F · 1 of 77 August 13–September 12, 2026 |
- Milepost
- 1068 · laid 2026-09-12T22:25:12Z
- 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/2026-08.ndjson
/home/maue/forecastpoints/data/verify/2026-09.ndjson - Digest
- 87a121c0922d13c55ed0fd9d072fcf6e86369deb278083a60fd27e87798f598d
- Machine
- JSON