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.

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WILLIAMSON RIVER - CHILOQUIN (WMSO3)

Latitude: 42.57º N	Longitude: 121.88º W	Elevation: 4149 Feet
Location: Klamath County in Oregon		Bulletin Group: North Coast		River Group: Klamath

Issuance Time:

Jun 16, 2025 at 6:40 AM PDT

Action/Monitor: 8.0 Feet

Minor Flood: 9.0 Feet

Moderate Flood: 10.0 Feet

Major Flood: 11.0 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 | WMSO3

Select Threshold to Use: Threshold Value: Threshold Label:

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		Official Forecast (Deterministic)

		Prob. of Threshold Exceedance
		Model Traces

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

Flood Impacts
10.0 Feet	Widespread flooding is occurring along the Williamson River from the Highway 97 bridge downstream to Upper Klamath Lake. Widespread farm land flooding is occurring. Numerous structures are flooded.
9.0 Feet	The Williamson River is at flood stage. Water exceeds the channel of the river and begins to impact structures along the river and in low-lying areas near the river.
8.0 Feet	The Williamson River is near bankfull stage. Water is nearing many structures along and enar the river. Water is close to structures at the Water Wheel Campground near Highway 97.

Official 7 Day National Weather Service Forecast (ORZ029)

Today: Partly cloudy until early afternoon then clearing. Highs in the lower to mid 70s. West winds around 5 mph increasing to 10 to 15 mph This Afternoon.

Tonight: Mostly clear. Lows in the lower to mid 40s. Northwest winds 10 to 15 mph decreasing to around 5 mph well after midnight.

Tuesday: Sunny. Highs in the mid 70s to lower 80s. Northwest winds around 5 mph shifting to the southwest in the late morning and early afternoon, then shifting to the west late in the afternoon.

Tuesday Night: Clear. Lows in the lower 40s to lower 50s. Northwest winds 10 to 15 mph decreasing to around 5 mph well after midnight.

Wednesday: Sunny. Highs in the mid 70s to mid 80s. Northwest winds around 5 mph shifting to the west in the afternoon.

Wednesday Night and juneteenth: Clear. Lows in the lower 40s to lower 50s. Highs in the mid 70s to mid 80s.

Thursday Night and Friday: Mostly clear. Not as warm. Lows in the mid 30s to mid 40s. Highs in the mid 60s to mid 70s.

Friday Night: Partly cloudy with a slight chance of rain showers in the evening, then mostly cloudy with a chance of rain and snow showers after midnight. Colder. Lows in the lower 30s to lower 40s.

Saturday: Mostly cloudy. Chance of rain and snow showers in the morning, then chance of rain showers in the afternoon. Highs in the lower 50s to lower 60s.

Saturday Night: Partly cloudy. Slight chance of rain showers in the evening. Areas of frost after midnight. Lows in the lower 30s to lower 40s.

Sunday: Partly cloudy in the morning then becoming sunny. Warmer. Areas of frost in the morning. Highs in the mid 60s to lower 70s.

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