Mammoth Lakes, CA

1:12 AM PST on February 21, 2017 (GMT -0800)
Bigwood, Mammoth Lakes, CA | | Change Station
Active Advisory: Winter Storm Warning, Areal Flood Watch Active Notice: Areal Flood Watch

Elev 8045 ft 37.64 °N, 118.99 °W | Updated 7 seconds ago

Snow
Snow
30.0 °F
Feels Like 24 °F
N
6.0
Wind Variable Wind from West
Gusts 6.0 mph

Today
High -- | Low -- °F
--% Chance of Precip.
Yesterday
High -- | Low -- °F
Precip. -- in
Pressure 30.08 in
Visibility 1.5 miles
Clouds Scattered Clouds 500 ft
Overcast 1300 ft
Windchill 24 °F
Dew Point 11 °F
Humidity 43%
Rainfall 0.00 in
Snow Depth Not available.
6:37 AM 5:41 PM
Waning Crescent, 27% visible
METAR KMMH 210855Z AUTO 12014G21KT 1 1/2SM -SN SCT005 OVC013 00/00 A3008 RMK AO2 T00000000
Pressure 30.08 in
Visibility 1.5 miles
Clouds Scattered Clouds 500 ft
Overcast 1300 ft
Windchill 24 °F
Dew Point 11 °F
Humidity 43%
Rainfall 0.00 in
Snow Depth Not available.
6:37 AM 5:41 PM
Waning Crescent, 27% visible
METAR KMMH 210855Z AUTO 12014G21KT 1 1/2SM -SN SCT005 OVC013 00/00 A3008 RMK AO2 T00000000

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What may become known as the President’s Day Storm of 2017 barreled into the San Francisco Bay area on Monday morning. Heavy rains and localized flooding may develop across the region. High winds later Monday could bring down trees and cause widespread, prolonged power outages from the Bay Area toward Sacramento.

10-Day Weather Forecast

Almanac

Astronomy

Feb. 21, 2017 Rise Set
Actual Time
Civil Twilight
Nautical Twilight
Astronomical Twilight
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Length of Visible Light
Length of Day
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Air Quality

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Not available.

Snow Depth

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Earthquake Activity

City Distance Mag. Time & Date
Minimum magnitude displayed is 2.5.

Coastal Water Temperatures

Place Temperature

Stations

Nearby Weather Stations

Station Location Temp. Windchill Dew Point Humidity Wind Precip. Elev Updated Type
                   

Watches & Warnings

Winter Storm Warning
Issued: 3:28 PM PST Feb. 20, 2017 – National Weather Service

... Winter Storm Warning remains in effect until 4 PM PST
Tuesday...

* timing: moderate to heavy snow and rain will continue through
Tuesday with the heaviest snow expected tonight.

* Additional snow accumulations: above 8000 feet... 15 to 30 inches
with locally up to 3 feet along the Sierra crest. Between 7000
and 8000 feet... 6 to 18 inches. Below 7000 feet... up to 8
inches with less than 4 inches below 6500 feet mainly on
Tuesday.

* Winds: south to southwest winds 25 to 35 mph with gusts to 55
mph. Sierra ridge gusts up to 120 mph.

* Snow levels: between 7000 and 7500 feet through tonight. Snow
levels will then fall to near 6500 feet by Tuesday morning and
near 6000 feet by Tuesday afternoon.

* Impacts: heavy snow will create dangerous conditions, with
travel being severely impacted over the Sierra passes.
Snowfall rates will exceed 2 inches per hour at times,
producing whiteout conditions over the passes and in the
backcountry.

Precautionary/preparedness actions...

Avoid travel today through Tuesday, 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.





328 PM PST Mon Feb 20 2017

... Winter Storm Warning remains in effect until 4 PM PST
Tuesday...

* timing: moderate to heavy snow and rain will continue through
Tuesday with the heaviest snow expected tonight.

* Additional snow accumulations: above 8000 feet... 15 to 30 inches
with locally up to 3 feet along the Sierra crest. Between 7000
and 8000 feet... 6 to 18 inches. Below 7000 feet... up to 8
inches with less than 4 inches below 6500 feet mainly on
Tuesday.

* Winds: south to southwest winds 25 to 35 mph with gusts to 55
mph. Sierra ridge gusts up to 120 mph.

* Snow levels: between 7000 and 7500 feet through tonight. Snow
levels will then fall to near 6500 feet by Tuesday morning and
near 6000 feet by Tuesday afternoon.

* Impacts: heavy snow will create dangerous conditions, with
travel being severely impacted over the Sierra passes.
Snowfall rates will exceed 2 inches per hour at times,
producing whiteout conditions over the passes and in the
backcountry.

Precautionary/preparedness actions...

Avoid travel today through Tuesday, 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.





Areal Flood Watch
Issued: 2:24 PM PST Feb. 20, 2017 – National Weather Service

... Flood Watch remains in effect through Tuesday morning...

The Flood Watch continues for

* a portion of east central California, including the following
area, Mono County.

* Through Tuesday morning

* a strong atmospheric river will bring heavy rain with snow
levels near 7000 feet. Heavy rain will contribute to increasing
flows on rivers and streams below 7000 feet with an enhanced
flood potential through Tuesday. Rock and mud slides are also
possible.

* The highest risk of flooding is in urban areas and along creeks,
streams, and pasture land below 7000 feet. The Walker River will
rise, but will likely remain below flood stage.

Precautionary/preparedness actions...

Travelers should slow down and turn on headlights in areas of
rainfall. Persons living along small creeks and streams should
monitor the latest weather information at weather.Gov/Reno and be
prepared to take action should flooding occur.