NBG The Ledger
MILEPOST 1457
Guidance has run 3.6°F warm at NBG for a month
The mean signed residual across 7,821 pairs is +3.60°F, against +0.15°F averaged over all 83 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 NBG over September 21–October 21, 2026, it lands +3.60°F from the report, across 7,821 pairs — the largest standing lean of any of the 83 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 NBG Forecast Network verification ledger |
3.6 °F | normal 0.1 °F · 1 of 83 September 21–October 21, 2026 |
- Milepost
- 1457 · laid 2026-10-21T21:25:19Z
- 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
- 17db1d3865a075f39df3853850ace06ac4be9a1df209c213953f0560612ef1e0
- Machine
- JSON