Nevada County, California
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Watch/Warnings
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The National Weather Service's Watches, Warnings and Advisories by state counties include: Thunderstorm, Tornado, Flood, Flash Flood, Winter Storm, High Wind, Gale, Small Aircraft, High Surf, Marine, Heat, Air Quality, Ashfall, Hazardous, and Special Statements.
Weather Alerts: Nevada County, California
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Avalanche Warning
CAZ072-NVZ002-221515-

URGENT - IMMEDIATE BROADCAST REQUESTED
AVALANCHE WARNING
FOREST SERVICE SIERRA AVALANCHE CENTER
RELAYED BY NATIONAL WEATHER SERVICE RENO NV
636 AM PST TUE FEB 21 2017

THE FOLLOWING MESSAGE IS TRANSMITTED AT THE REQUEST OF THE FOREST
SERVICE SIERRA AVALANCHE CENTER.

THE FOREST SERVICE SIERRA AVALANCHE CENTER HAS CONTINUED A
BACKCOUNTRY AVALANCHE WARNING.

* TIMING...IN EFFECT THROUGH 7 AM WEDNESDAY MORNING.

* AFFECTED AREA...FOR THE SIERRA NEVADA MOUNTAINS OF CALIFORNIA
AND NEVADA, FROM YUBA PASS TO EBBETTS PASS, INCLUDING THE LAKE
TAHOE BASIN.

* AVALANCHE DANGER...HIGH AVALANCHE DANGER WILL EXIST AT ALL
ELEVATIONS.

* REASON/IMPACTS...A STRONG ATMOSPHERIC RIVER STORM IS IMPACTING
THE AREA. WIND SLAB AND STORM SLAB AVALANCHE PROBLEMS WILL BE
VERY LIKELY AT ALL ELEVATIONS. NATURAL AND HUMAN TRIGGERED
AVALANCHES ARE EXPECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AVALANCHES MAY RUN LONG DISTANCES, INTO FLAT AREAS, AND CAN RUN
INTO MATURE FORESTS.

TRAVEL IN AVALANCHE TERRAIN IS NOT RECOMMENDED.

CONSULT WWW.SIERRAAVALANCHECENTER.ORG OR WWW.AVALANCHE.ORG FOR
MORE DETAILED INFORMATION.

SIMILAR AVALANCHE DANGER MAY EXIST AT LOCATIONS OUTSIDE THE
COVERAGE AREA OF THIS OR ANY AVALANCHE CENTER.

$$

Flood Warning
CAC003-005-007-009-011-017-021-033-035-057-061-063-067-077-089-091-
095-099-101-103-109-113-115-240000-
/O.CON.KSTO.FA.W.0011.000000T0000Z-170224T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Colusa CA-Yolo CA-Sutter CA-Solano CA-Plumas CA-Alpine CA-Placer CA-
Shasta CA-Lassen CA-Amador CA-Tuolumne CA-Sacramento CA-Lake CA-
Stanislaus CA-San Joaquin CA-El Dorado CA-Calaveras CA-Tehama CA-
Butte CA-Glenn CA-Sierra CA-Yuba CA-Nevada CA-
912 AM PST TUE FEB 21 2017

...A FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS REMAINS IN
EFFECT UNTIL 400 PM PST THURSDAY FOR COLUSA...YOLO...SUTTER...
SOLANO...PLUMAS...ALPINE...PLACER...SHASTA...LASSEN...AMADOR...
TUOLUMNE...SACRAMENTO...LAKE...STANISLAUS...SAN JOAQUIN...EL
DORADO...CALAVERAS...TEHAMA...BUTTE...GLENN...SIERRA...YUBA AND
NEVADA COUNTIES...

Officials have reported that Clear Creek out of Whiskeytown Dam in
Shasta County will exceed the safe channel capacity and will flood.
Downstream locations impacted includes the Environmental School and
other residents in low lying areas near the creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

A Flood Warning means that flooding is imminent or occurring. All
interested parties should take necessary precautions immediately.

&&

LAT...LON 3725 12146 3810 12157 3808 12230 3832 12206
3884 12229 3867 12262 3907 12309 3950 12306
3955 12288 4033 12307 4058 12269 4117 12246
4118 12250 4118 12133 4059 12132 3835 11963
3776 11988 3780 12018 3713 12122

$$

Winter Storm Warning
CAZ072-NVZ002-221200-
/O.CON.KREV.WS.W.0009.000000T0000Z-170222T1200Z/
Greater Lake Tahoe Area-
Including the cities of South Lake Tahoe, Truckee, Stateline,
and Incline Village
309 PM PST Tue Feb 21 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST
WEDNESDAY...

* Timing: Bands of snow will continue through tonight with the
heaviest snow expected through this evening. Snow may rapidly
vary in intensity over short distances.

* Additional Snow Accumulations: 6 to 12 inches. Locally 18 inches
or more in areas where heavy snow bands persist.

* Winds: Southwest winds 10 to 20 mph with gusts to 35 mph.
Sierra ridge gusts near 100 mph.

* Wave Heights on Lake Tahoe: 2 to 3 feet with highest waves
expected from mid lake to the north and east shores.

* Impacts: Bands of heavy snow could produce rapid drops in
visibility with snowfall rates up to 3 inches per hour at
times, producing dangerous whiteout conditions especially over
the passes and in the backcountry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid travel through tonight, you could be stuck in your vehicle
for many hours. If you must travel, prepare for long delays and
carry an emergency kit with extra food, water and clothing. If
you stay home, have a backup plan in case of power outages.

&&

$$

Winter Storm Warning
CAZ068-069-221400-
/O.EXT.KSTO.WS.W.0010.000000T0000Z-170222T1400Z/
Western Plumas County/Lassen Park-
West Slope Northern Sierra Nevada-
Including the cities of Chester, Quincy, and Blue Canyon
906 PM PST Tue Feb 21 2017

...WINTER STORM WARNING NOW IN EFFECT UNTIL 6 AM PST WEDNESDAY...

* Main impacts: Travelers may experience delays. Chain controls.
Poor visibility due to snow and icy roads.

* Confidence...High.

* Locations...Interstate 80 over Donner pass, Highway 50 over
Echo summit, Highway 88 over Carson pass, and Lassen park.

* Timing...Periods of snow through tonight before tapering off to
flurries by daybreak.

* Snow amounts...Additional accumulations up to 3 inches down to
around 5000 feet.

* Snow levels...4000 to 5000 feet.

A Winter Storm Warning for heavy snow means severe winter weather
conditions are expected or occurring. Significant amounts of
snow are forecast that will make travel dangerous. Only travel in
an emergency. If you must travel, keep an extra flashlight, food,
and water in your vehicle in case of an emergency. Strong winds
are also possible. This will make travel very hazardous or
impossible.

&&

Interact with us via social media www.facebook.com/nws.sacramento
www.twitter.com/nwssacramento

$$
National Weather Service

Providing "weather, water cycle, and climate forecasts and warnings for the United States, its territories, adjacent waters and ocean areas, for the protection of life and property and the enhancement of the national economy."
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