
Caption: Daily rainfall totals (inches) for the early January 2026 Monterey Bay (CA, USA) storm, comparing forecasts issued 120h, 72h, and 24h before each day to observed rainfall. Each horizontal line connects a forecast value (blue) to the observed value (green) for the same calendar day.
Data source: Open-Meteo (NWS/GEFS) forecast data and observed rainfall via The Weather Recap (iOS).
Tools: R (ggplot).
Posted by CgotnoMoney
![[OC] Forecast vs. observed daily rainfall for the most recent Monterey Bay storm at different forecast lead times [OC] Forecast vs. observed daily rainfall for the most recent Monterey Bay storm at different forecast lead times](https://www.byteseu.com/wp-content/uploads/2026/01/hsjcx1z3x8cg1-1536x1229.png)
2 Comments
I’m not used too time series analysts, but what formula did you use to forecast?
“In” is not a beautiful unit.