Wet Weather Today, Drying Begins Wednesday

A Flood Advisory has been issued for Mariposa County, until 10 AM this morning.

At 1:54 AM, Doppler radar indicated heavy rain due to thunderstorms. Between half-an-inch and eight tenths of an inch of rain have fallen.

Urban and small stream flooding caused by excessive rainfall has been occurring. There has been minor flooding in low-lying and poor drainage areas as well as rises in small streams and normally dry arroyos. Ponding of water in urban or other areas is occurring or is imminent.

Additional rainfall amounts of two tenths of an inch to half-an-inch are expected over the area. This additional rain will result in minor flooding.

Turn around, don’t drown when encountering flooded roads. Most flood deaths occur in vehicles. Please report observed flooding to local emergency services or law enforcement and request that they pass this information to the National Weather Service, when you can do so safely.

The National Weather Service has issued a Winter Storm Warning for the western slopes of the northern Sierra Nevada until 4 AM Wednesday. Additionally, the Winter Storm Warning issued for Yosemite National Park (outside of the Valley floor), will stay effective until 4 PM Wednesday.

Periods of moderate to heavy snow is forecast above 7,000 feet through this afternoon, with lingering showers early Wednesday morning.

The snow levels are lowering from 5,000 to 6,000 feet, down to 4,000 to 5,000 feet throughout the day today.

Additional snow accumulations above the 7,000 foot elevation will range from four to thirty inches. The higher you go, the more the snow.

Winds will continue to gust as high as forty to fifty mph. Areas of blowing snow could significantly reduce visibility.

Persons are urged to stay indoors until conditions improve. If you must go outside, dress in layers. Several layers of clothes will keep you warmer than a single heavy coat. Cover exposed skin to reduce your risk of frostbite or hypothermia. Gloves, a scarf, and a hat will keep you from losing your body heat.

Snow-covered roads, chain controls and travel delays are likely, which will result in very difficult travel at times above 5,500 feet. Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult to impossible. If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency.

Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order.