Weather warnings
Weather warnings for Castro Valley
Updated
No warnings; 1 advisory in effect: Coastal Flood Advisory until Thu 3:00 pm Source: National Weather Service.
Official weather warnings, watches and advisories for Castro Valley, California, United States, updated every few minutes, plus severe weather flags from the 48-hour forecast.
- Active warnings
- 0 NWS active alerts
- Watches / advisories
- 1
- Next alert ends
- Thu 3:00 pm Coastal Flood Advisory
- Max gust next 48 h
- 23 km/h Sun 10:00 pm
- Rain next 48 h
- 0 mm
- Temperature range
- 10 to 23°C
- Forecast flags
- 0 GodsView, not official
Weather warnings for Castro Valley now
1 official alert covers Castro Valley, California, United States right now: 0 warnings and 1 watch or advisory.
Coastal Flood Advisory (Minor) until Thu 3:00 pm. * WHAT...Up to 1.9ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. * WHERE...Bay Shoreline locations of San Francisco Bay, Monterey Bay and Big Sur Coast. * WHEN...Until 3 PM PDT Thursday. * IMPACTS...High tides will result in flooding of low-lying infrastructure,...
| Alert | Level | Area | From | Until |
|---|---|---|---|---|
| Coastal Flood Advisory | Minor | San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey... | Sun 9:06 am | Thu 3:00 pm |
Times are local (America/Los_Angeles). Source: National Weather Service.
GodsView forecast flags (not an official warning)
The forecast model shows nothing that crosses our thresholds for Castro Valley in the next 48 hours.
Expect temperatures between 10 and 23°C, 0 mm of precipitation and gusts peaking near 23 km/h.
Thresholds: gusts 70+ km/h (90+ damaging), 50+ mm rain in 24 h or 10+ mm in an hour, 10+ cm snow in 24 h, thunderstorm and freezing-rain weather codes, 35°C+ heat, -25°C or wind chill -30°C. Open-Meteo model forecast; official warnings take precedence.
Weather warnings near Castro Valley
Status of nearby cities from our 3-minute-old snapshot of the same official feeds.
| City | Distance | Active alerts |
|---|---|---|
| Ashland | 2 km | 1: Coastal Flood Advisory |
| Hayward | 3 km | 1: Coastal Flood Advisory |
| San Leandro | 7 km | 1: Coastal Flood Advisory |
| Union City | 12 km | 1: Coastal Flood Advisory |
| Dublin, CA | 13 km | None |
| San Ramon | 13 km | None |
| Alameda | 18 km | 1: Coastal Flood Advisory |
| Fremont | 18 km | 1: Coastal Flood Advisory |
Warning, watch or advisory: what the levels mean
A Warning means hazardous weather is happening or imminent: act now. A Watch means conditions are favourable for it to develop: be ready. An Advisory is for less serious conditions that still cause significant inconvenience, and a Statement gives follow-up information.