West Slope Northern Sierra Nevada Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

Winter Storm Warning
Issued: 3:30 AM PDT Mar. 23, 2018 – National Weather Service

... Winter Storm Warning in effect from 6 PM this evening to 9 am
PDT Sunday...

* what... heavy snow expected. Travel will be very difficult to
impossible. Total snow accumulations of 12 to 18 inches above
4000 feet with localized amounts up to 30 inches are expected.

* Where... West Slope northern Sierra Nevada including Interstate
80 over Donner Pass, Highway 50 over Echo Summit and Highway 88
over Carson Pass.

* When... 6 PM today to 9 am Sunday.

* Additional details... be prepared for significant reductions in
visibility at times. Significant travel delays likely.

Precautionary/preparedness actions...

A Winter Storm Warning for snow means there will be snow covered
roads and limited visibilities. Travel is not recommended while
the warning is in effect. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency.The latest Road conditions for the state you are
calling from can be obtained by calling 5 1 1.

Flash Flood Warning
Issued: 5:12 PM PDT Mar. 22, 2018 – National Weather Service

... The Flash Flood Warning remains in effect until 215 PM PDT Friday
for Moccasin dam in south central Tuolumne County...

At 500 PM PDT, local authorities have reported that water levels
have decreased at the Moccasin dam and it is no longer in imminent
danger of failing.

However, a risk of potential failure still exists. The dam owner
will closely monitor the situation over night. Evacuations of the
Fish Hatchery and powerhouse remain in effect. Therefore, the Flash
Flood Warning will remain in effect.

Local authorities will re-evaluate conditions at the dam Friday
morning. An update will be issued after the evaluation.

Precautionary/preparedness actions...

A Flash Flood Warning means that flooding may occur.
Portions of Highway 49 were washed out near the Moccasin dam. Check
caltrans for Road updates.

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