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RUSSIAN RIVER - HOPLAND (HOPC1)

Latitude: 39.03º N	Longitude: 123.13º W	Elevation: 498 Feet
Location: Mendocino County in California		Bulletin Group: Russian Napa		River Group: Russian Napa

Issuance Time:

Oct 11, 2024 at 7:45 AM PDT

Monitor Stage: N/A

Flood Stage: 15.0 Feet

Please Note:

Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty.

Short-Range Peak Exceedance Plot Product Info. Plot Type:

CSV Ensemble File Download (Data in feet): HOPC1

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		Official Forecast (Deterministic)
		Ensemble Mean
		Model Traces

	Hourly Probabilities
		0-5% chance
		5-25% chance
		25-40% chance
		40-60% chance

What information is considered in this forecast?

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Impacts - E19 Information
30.0 Feet	Disastrous flooding. Many homes and businesses damaged. Numerous primary and secondary roads and some bridges could be washed out. This is equal to the highest known stage, which occurred in December 1937. 6500 acres were inundated by flood waters.
28.0 Feet	Disastrous flooding will occur. Many homes and businesses could be damaged. Many primary and secondary roads and some bridges could be washed out.
27.0 Feet	Widespread major flooding. At the forecast level, over 500 homes and farm buildings were damaged on December 22, 1955. 6300 acres of land were inundated by flood waters. All persons in the areas area urged to move to high ground and take appropriate action to protect life and property.
26.0 Feet	Widespread major flooding will occur. Primary roads and some bridges will flood.
25.0 Feet	Severe bank erosion is likely with widespread flooding of farmland, buildings, and low-lying homes in the Hopland, Ukiah, and Talmage areas. Many secondary roads will be flooded. This level of flooding caused 6100 acres to flood in February 1940.
24.0 Feet	Flooding of low-lying stuctures and farmland in the Hopland, Ukiah, and Talmage ares. Many secondary roads may also be flooded. Severe bank erosion is possible.
23.0 Feet	Flooding of farmland, buildings, and low-lying homes in the Hopland area. Flooding will begin in the Ukiah and Talmage areas.
21.0 Feet	Flooding of low-lying structures just west of the railroad tracks near Hopland.
20.0 Feet	Flooding of low-lying structures east of the railroad tracks near Hopland.
18.0 Feet	Flooding of Highway 222 near Ukiah. Secondary roads in low-lying areas will be flooded in the Hopland, Ukiah, and Talmage areas.
17.0 Feet	Significant flooding of Highway 175 at the approaches to the Russian River bridge. Minor flooding of Highway 222 near Ukiah, and in crop land along the left and right banks of the Russian River near Hopland.
15.0 Feet	Flooding of Highway 175 is expected at the approaches to the Russian River bridge. Expect flooding of cropland on the right bank of river.

Official 7 Day National Weather Service Forecast (CAZ113)

Today: Partly cloudy. Highs 71 to 86.

Tonight: Partly cloudy in the evening then becoming mostly cloudy. Rain showers likely overnight. Lows 49 to 59.

Saturday: Patchy valley fog in the morning. Rain showers in the morning, then rain showers likely in the afternoon. Highs 62 to 72.

Saturday Night: Mostly cloudy. Slight chance of rain showers. Lows 51 to 61.

Sunday: Mostly sunny. Patchy valley fog. Highs 68 to 83.

Sunday Night: Partly cloudy. Lows 51 to 61.

Columbus Day through Tuesday: Mostly clear. Highs 72 to 87. Lows 51 to 61.

Tuesday Night and Wednesday: Mostly cloudy. Chance of rain. Lows 49 to 59. Highs 68 to 83.

Wednesday Night: Partly cloudy. Lows 44 to 54.

Thursday: Sunny. Highs 61 to 75.

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