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| MCCLOUD RIVER - SHASTA LAKE (MSSC1) | ||||||||||||||||||
| Latitude: 40.95º N | Longitude: 122.22º W | Elevation: 1100 Feet | ||||||||||||||||
| Location: Shasta County in CA | ||||||||||||||||||
| River Group: Upper Sacramento | ||||||||||||||||||
| Issuance Time: | Jun 30 2025 at 9:02 AM PDT |
| Please Note: | Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty. Flow data on this product are unregulated / full natural flow. |
| Monthly Probability Plot |
| Monthly Streamflow Volume (1000s of Acre-Feet) Data Updated: Aug 09 2013 at 1:01 PM PDT | ||||||
| Prob | Feb | Mar | Apr | May | Jun | Jul |
| 10% | 153.4 | 251.8 | 174.0 | 137.6 | 94.0 | 76.9 |
| 25% | 101.7 | 181.5 | 132.0 | 105.0 | 77.3 | 69.2 |
| 50% | 71.3 | 139.4 | 105.1 | 94.3 | 66.5 | 62.5 |
| 75% | 58.4 | 105.6 | 90.2 | 80.2 | 58.4 | 56.5 |
| 90% | 55.7 | 75.0 | 77.8 | 69.0 | 52.5 | 50.9 |
| Mean | ||||||
| %Mean | ||||||
| Prob | Aug | Sep | Oct | Nov | Dec | Jan |
| 10% | 69.0 | 63.7 | 63.5 | 115.4 | 219.7 | 354.8 |
| 25% | 65.0 | 59.1 | 56.3 | 76.1 | 158.4 | 216.3 |
| 50% | 59.0 | 53.3 | 50.7 | 56.3 | 84.1 | 119.9 |
| 75% | 54.1 | 49.5 | 46.5 | 43.3 | 50.2 | 68.3 |
| 90% | 49.2 | 45.6 | 43.1 | 38.8 | 41.9 | 49.8 |
| Mean | ||||||
| %Mean | ||||||
| Note 1: %Mean is the "Median forecast monthly value (50%)" divided by the "monthly mean" (displayed as a %) | ||||||
| Note 2: For current month, graphic represents remaining forecast only, text represents observed + remaining forecast. | ||||||
| Location Photographs | ||
| ESRI™ Locator Map |
| Official 7 Day National Weather Service Forecast (CAZ013) |
| Tonight: Mostly clear. A slight chance of showers and thunderstorms early in the evening, then a slight chance of rain showers late in the evening. Lows 59 to 74. Prevailing west winds up to 10 mph in the evening becoming light. Tuesday: Mostly sunny in the morning, then mostly cloudy with a chance of rain showers and a slight chance of thunderstorms in the afternoon. Highs 82 to 97 higher elevations and 93 to 101 lower elevations. Light winds becoming southwest up to 10 mph in the afternoon. Tuesday Night: Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms in the evening, then mostly clear after midnight. Lows 56 to 71 higher elevations and 65 to 75 lower elevations. Prevailing north winds up to 10 mph. Wednesday: Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs 83 to 98 higher elevations and 95 to 103 lower elevations. Light winds becoming southwest up to 10 mph in the afternoon. Wednesday Night: Mostly clear. A slight chance of rain showers in the evening. Cooler. Lows 52 to 67 higher elevations and 61 to 71 lower elevations. Prevailing northwest winds up to 10 mph. Thursday: Partly cloudy with a slight chance of rain showers. Highs 79 to 94. Thursday Night: Mostly clear. Cooler. Lows 51 to 66. Independence Day through Monday: Clear. Highs 78 to 93. Lows 53 to 68. |