Observed gauges / Forecast gauges / NWS warnings: feeds current
Observed gauges: Feed current; checked .
Forecast gauges: Feed current; checked .
NWS warnings: Feed current; checked .
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Action stage
Marsh Creek Reservoir, CA
- Gauge
- Lake or reservoir level · MCBC1 · NWS MTR
- Observed
- Observed 168.4 ft at : action stage
- Forecast
- No forecast at action stage or above.
- Stages
- Action 168 ft · Flood (minor) 192 ft
Forecast hydrograph
Impacts and the full forecast are read for gauges in flood; this one is at action stage.
NWS’s statements for this gauge’s water at each stage, up to the highest observed or forecast. A gauge does not say whether a particular road or neighbourhood near it floods.
NWPS’s page for MCBC1 On the Live tracker’s map River flood warnings in California
Rain and rivers in California
- Expected rain: 1.25 in or more at its highest in California, in WPC’s forecast for the 24 hours to . An amount for the area its contour covers, not a total for any one street.
- Rain that fell: 0.01 to 0.1 in at its highest in California, in the 24 hours to , by MRMS’s radar estimate over a grid about 5 km across: a measurement of the past, not corrected to rain gauges.
- Rivers: 1 gauge in flood in California, by NWS’s lists read . Minor flooding Coyote Creek (Marin) at Tam Valley, CA. Observed 7.25 ft at : minor flooding. No forecast at action stage or above. A gauge measures its river at that spot, not whether a road or a neighbourhood floods.
Three sources, each its own window. None is a chance of flash flooding, which is WPC’s outlook above; a flash flood is a warning’s. Gauges in the Live tracker
On the Briefing’s map
- Flash-flood risk WPC’s Excessive Rainfall Outlook: a chance, in four categories
- Expected rain WPC’s 24-hour rain forecast, in inches
- Rain that fell MRMS’s radar estimate for the past 24 or 72 hours
River, coastal and lake gauges in California
One gauge in flood in California, observed or forecast. Choose one for its forecast hydrograph.
Minor flooding 1
- Observed: minor flooding Coyote Creek (Marin) at Tam Valley, CAObserved 7.25 ft at : minor flooding
Action stage, not flooding 1
Action stage is the level at which NWS and local officials begin to act; the water is not yet at flood stage.
- Observed: action stage Marsh Creek Reservoir, CAObserved 168.4 ft at : action stage
A gauge measures its water at that one place. Flash flooding, which comes in hours from heavy rain, is in the warnings as Flash Flood Warnings; a river can be in flood with no rain falling.
Gauges observed checked · Data: NOAA/NWS
Gauges forecast checked · Data: NOAA/NWS
Gauge impacts and forecasts checked · Data: NOAA/NWPS
California flash-flood briefing
Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.