FLOOD EARLY WARNING SYSTEM|OneShoreline|San Mateo CountyIn an emergency, call 911.Bayside Tides: NOAA's Redwood City gauge. Cards show each day's highest tide (NOAA projection for about 2 days, then the tide table); blue = above MHHW, the average daily high (higher than usual), red = the provisional flood level. The line under the The National Weather Service row names a tide expected to reach the flood level.
Coastside Tides: the same for the ocean at NOAA's Monterey gauge, the nearest with live readings on the open coast south of San Francisco. No coastside flood level yet. Waves are not included and can push water much farther up a beach.
Creeks: water level (stage) at OneShoreline's creek gauges with their flood thresholds, nearby rainfall, and the Bay tide, all on one timeline.
Data: NOAA Tides & Currents, National Weather Service, and the OneShoreline Early Warning System (OneRain). The tide table does not include storm surge. Data refreshes automatically.