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SOUTH FORK EEL RIVER - MIRANDA (MRNC1)

Latitude: 40.18º N	Longitude: 123.78º W	Elevation: 263 Feet
Location: Humboldt County in California		Bulletin Group: North Coast		River Group: North Coast

Issuance Time:

Jun 30, 2025 at 9:06 AM PDT

Action/Monitor: 27.0 Feet

Minor Flood: 33.0 Feet

Moderate Flood: 38.0 Feet

Major Flood: 42.0 Feet

Please Note:

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

Threshold Exceedance Plot Product Information

CSV Ensemble Files (Data in kcfs): Forecast Group | MRNC1

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		Official Forecast (Deterministic)

		Prob. of Threshold Exceedance
		Model Traces

What information is considered in this forecast?

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Flood Impacts
47.0 Feet	Extensive and severe flooding of all areas along the river. Severe damage to roads, bridges and structures can be expected. US Highway 101 and Highway 254 (Avenue of the Giants) will likely be closed. All persons in the vicinity of the river should take appropriate actions to protect life and property.
45.0 Feet	Severe flooding of many communities and roads along the river can be expected. Numerous road closures are likely, possibly including US Highway 101 and Highway 254 (Avenue of the Giants). All persons in the vicinity of the river should take appropriate actions to protect life and property.
42.0 Feet	Extensive and severe flooding of many portions of the Avenue of the Giants, especially areas in the vicinity of Sylvandale, Myers Flat, Weott and Phillipsville. Expect numerous road closures in these areas.
38.0 Feet	Considerable flooding of portions of the Avenue of the Giants (Highway 254) in the vicinity of Sylvandale, Myers Flat and Weott, with numerous road closures expected. Minor flooding will begin along Phillipsville Road and adjacent low lying areas.
35.0 Feet	Considerable flooding of portions of Avenue of the Giants in the vicinity of Sylvandale, Myers Flat and Weott is likely. Expect closure Of Avenue of the Giants (Highway 254) in numerous locations.
33.0 Feet	Flooding of portions of the Avenue of the Giants is likely in the vicinity of Sylvandale, and the Myers Flat and Redwood Giants Trailer Park. Flooding is also possible near Weott.
30.0 Feet	Flooding of portions of the Avenue of the Giants may occur, especially in the vicinity of Sylvandale and the Myers Flat and Redwood Giants Trailer Park.
27.0 Feet	Flooding of portions of the Avenue of the Giants (Highway 254) is possible near Sylvandale.

Official 7 Day National Weather Service Forecast (CAZ106)

Today: Mostly cloudy then becoming partly cloudy in the late morning and early afternoon then becoming mostly cloudy. Slight chance of showers and thunderstorms in the afternoon. Highs 77 to 92.

Tonight: Mostly cloudy in the evening then becoming partly cloudy. Lows 51 to 61.

Wednesday: Sunny. Highs 75 to 90.

Wednesday Night: Partly cloudy. Lows 47 to 57.

Thursday: Mostly sunny. Highs 69 to 84.

Thursday Night and Independence Day: Partly cloudy. Lows 43 to 53. Highs 69 to 84.

Friday Night through Sunday: Mostly clear. Lows 44 to 54. Highs 73 to 88.

Sunday Night: Partly cloudy. Lows 47 to 57.

Monday: Sunny. Highs 76 to 91.

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