The National Weather Service has issued an Urban and Small Stream Flood Advisory for Calaveras County and southwestern Tuolumne County until 7:15 PM.
At 1:15 PM storms were continuing to move through the area bringing moderate to heavy precipitation. Widespread showers and scattered thunderstorms will continue to develop over the area through the afternoon. Rainfall amounts around half an inch an hour are possible.
Small streams and creeks will have rapid rises and may overflow their banks. Street flooding especially near storm drains is already occurring. Ponding of water in poor drainage areas and low lying spots is also expected.
Excessive runoff from heavy rainfall will cause elevated levels on small creeks and streams and ponding of water in urban areas, highways, streets and underpasses as well as other poor drainage areas and low lying spots.
Most flood deaths occur in automobiles. Never drive your vehicle into areas where the water covers the roadway. Flood waters are usually deeper than they appear. Just one foot of flowing water is powerful enough to sweep vehicles off the road. When encountering flooded roads make the smart choice: Turn around, don’t drown.
Additionally, the Winter Storm Warning remains in effect for the Sierra Nevada above 6000 feet until 4 AM Saturday.
Four to twenty inches of additional snow accumulation is expected above 6000 feet.
Winds of five to forty mph will continue with gusts up to eighty mph over the crest of the Sierra.