CNRFC - Ensemble Products

*** IMPORTANT *** Week of June 16 - Website Data Outage - Due to a major computer upgrade the week of June 16, nearly all data on the CNRFC web site will not be updated. We anticipate the down time to be approximately 4 days. The latest deterministic hydrologic forecasts for official forecast points will continue to be available at the National Water Prediction Service during this time.

Short-Range Products (hourly timestep)

Long-Range Products (daily timestep)

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Location:

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BEAR CREEK - HOLSTEN CHIMNEY CANYON (HCHC1)

Latitude: 38.96º N	Longitude: 122.34º W	Elevation: 920 Feet
Location: Colusa County in California		Bulletin Group: Lower Sacramento		River Group: Cache Putah

Issuance Time:

Jun 21, 2025 at 11:54 AM PDT

Action/Monitor: N/A

Minor Flood: N/A

Moderate Flood: N/A

Major Flood: N/A

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 Files (Data in kcfs): Forecast Group | HCHC1

Cursor readout:

Show:

		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?

Verification / Historical Plots
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Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Official 7 Day National Weather Service Forecast (CAZ063)

Today: Sunny, warmer. Highs 60 to 75 higher elevations and 78 to 83 lower elevations. Prevailing north winds 5 to 15 mph.

Tonight: Clear. Lows 48 to 63 higher elevations and 59 to 67 lower elevations. Prevailing north winds up to 15 mph.

Monday: Sunny, warmer. Highs 69 to 84 higher elevations and 87 to 93 lower elevations. Prevailing north winds up to 15 mph.

Monday Night: Partly cloudy. Lows 53 to 65 higher elevations and 61 to 69 lower elevations. Prevailing west winds up to 10 mph.

Tuesday: Sunny. Highs 71 to 86 higher elevations and 89 to 94 lower elevations. Light winds becoming southeast up to 10 mph in the afternoon.

Tuesday Night: Clear. Lows 54 to 68.

Wednesday: Sunny. Highs 75 to 90.

Wednesday Night through Friday Night: Clear. Lows 55 to 70. Highs 75 to 90.

Saturday: Sunny, warmer. Highs 80 to 95.

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