Observed arrival · 2026-11-06
Storm Gap’s Sierra storm windows
A beta forecast page combining radar, 48-hour route precipitation, summit cameras, and estimated road-impact risk for three Sierra passes.
- For
- Drivers crossing the Sierra’s I-80, US-50, or SR-88 passes
- Worth noticing
- Its “held” measure checks forecast dry spells against radar-measured precipitation across about 150 storm days; road-call thresholds remain unscored.
Field notes
The interface separates NWS radar for current conditions from hourly HRRR forecasts, then lays route precipitation west-to-east over the summit stretch. Users can tap forecast cells and enlarge Caltrans summit-camera images; a snow-level line relates the rain-to-snow transition to road elevation. Confidence notes compare forecast dry windows with radar-measured precipitation, while chain-control and closure labels are described as estimates pending scoring against Caltrans logs.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
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