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Local Wx Station Data Sacramento, Northern Sierra Nevada & the Motherlode Area Current Weather Conditions
Placerville, CA (near 1,850 ft. elevation - 95667)
Wx Discussion - Wx Hazards - Wx Special Statements
NWS Forecast for Placerville CA
National Weather Service Forecast for: Placerville CA
Issued by: National Weather Service Sacramento, CA
Updated: 2:00 am PST Jan 25, 2021
 
Overnight

Overnight: Showers.  Low around 31. Southwest wind around 7 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers

Monday

Monday: A chance of rain and snow showers.  Mostly cloudy, with a high near 41. Light and variable wind becoming west 5 to 8 mph in the morning.  Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Chance
Rain/Snow
Monday
Night
Monday Night: Partly cloudy, with a low around 24. South wind 6 to 8 mph becoming east after midnight.
Partly Cloudy

Tuesday

Tuesday: Snow showers likely after 4pm.  Increasing clouds, with a high near 42. East southeast wind 9 to 14 mph becoming south in the afternoon. Winds could gust as high as 20 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunny then
Snow Showers
Likely
Tuesday
Night
Tuesday Night: Snow showers.  Low around 36. Windy, with a south southeast wind 15 to 20 mph increasing to 27 to 32 mph after midnight. Winds could gust as high as 48 mph.  Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Snow Showers
and Windy
Wednesday

Wednesday: Rain and snow showers, becoming all rain after 10am.  High near 45. Breezy.  Chance of precipitation is 100%. Little or no snow accumulation expected.
Rain/Snow and
Breezy then
Showers
Wednesday
Night
Wednesday Night: Showers.  Low around 42. Chance of precipitation is 90%.
Showers

Thursday

Thursday: Showers. The rain could be heavy at times.  Cloudy, with a high near 45.
Heavy Rain

Thursday
Night
Thursday Night: Showers. The rain could be heavy at times.  Mostly cloudy, with a low around 39.
Heavy Rain

Lo 31 °F Hi 41 °F Lo 24 °F Hi 42 °F Lo 36 °F Hi 45 °F Lo 42 °F Hi 45 °F Lo 39 °F

Winter Storm Watch
Winter Weather Advisory
Hard Freeze Warning
High Wind Watch
 

Overnight
 
Showers. Low around 31. Southwest wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
 
A chance of rain and snow showers. Mostly cloudy, with a high near 41. Light and variable wind becoming west 5 to 8 mph in the morning. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Monday Night
 
Partly cloudy, with a low around 24. South wind 6 to 8 mph becoming east after midnight.
Tuesday
 
Snow showers likely after 4pm. Increasing clouds, with a high near 42. East southeast wind 9 to 14 mph becoming south in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Tuesday Night
 
Snow showers. Low around 36. Windy, with a south southeast wind 15 to 20 mph increasing to 27 to 32 mph after midnight. Winds could gust as high as 48 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Wednesday
 
Rain and snow showers, becoming all rain after 10am. High near 45. Breezy. Chance of precipitation is 100%. Little or no snow accumulation expected.
Wednesday Night
 
Showers. Low around 42. Chance of precipitation is 90%.
Thursday
 
Showers. The rain could be heavy at times. Cloudy, with a high near 45.
Thursday Night
 
Showers. The rain could be heavy at times. Mostly cloudy, with a low around 39.
Friday
 
A chance of rain, mainly before 4pm. Partly sunny, with a high near 49.
Friday Night
 
A chance of rain. Mostly cloudy, with a low around 38.
Saturday
 
A chance of rain. Mostly cloudy, with a high near 49.
Saturday Night
 
A chance of rain. Mostly cloudy, with a low around 42.
Sunday
 
A chance of rain. Mostly cloudy, with a high near 52.

 

Forecast from NOAA-NWS for Placerville CA.

Weather Forecast Discussion
000
FXUS66 KSTO 242211
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
211 PM PST Sun Jan 24 2021
.SYNOPSIS...
Light to Moderate rain and snow expected into Monday as a cold
system moves across Northern California. Cold morning lows
Tuesday will drop valley temperatures into the 20s. A long
duration, high impact winter storm is expected Tuesday evening
into Friday bringing periods of gusty winds and moderate to heavy
rain and mountain snow. Potential for significant low elevation
snow and damaging winds Tuesday night and Wednesday.

&&

.DISCUSSION...
Current storm begins is moving into the region this afternoon.
Precipitation will continue to spread inland, eventually reaching
the Sierra by late afternoon. Snow levels will be low around 2000
ft over Shasta County to 3500 ft over the western slopes of the
Sierra Nevada. Snow levels will drop to around 1500 ft before
ending late at night in the north and during the day for places
further south on Monday. One to two inches of snow will be
possible down to around 2000 to 2500 feet for the eastern
foothills but will lower to around 1000 ft over the southern
Motherlode Monday morning. Only light amounts of snow expected at
the tail end of the system with an outside chance places on the
eastern side of the San Joaquin valley may see some snow flakes in
the morning. Rain amounts in the valley will range from a tenth
of an inch to a third of an inch. Heaviest snow is expected
tonight with 4 to 8 inches expected, with slightly higher amounts
near pass levels. A Winter Weather Advisory has been issued for
these locations. Very light precipitation continues across the
Central Sierra through Monday evening before dry weather briefly
returns.

Behind the system on Monday expect northerly winds to develop
generally between 10 and 20 mph. The coldest morning will be on
Tuesday with lows in the mid 20s to lower 30s for the valley to
single digits to teens for the mountains. Have issued a Hard
Freeze Watch as the result for Tuesday morning for elevations
below 2000 ft. This cold air that will precede the next much
stronger storm is what will lead to the low elevation snow at the
begining of the next event.

Late Tuesday/Tuesday night, a high impact winter storm is
expected to begin move into interior Northern California. Gusty
winds, heavy rain, and multiple feet of snow all look likely with
this system.

There is an outside chance some minor accumulation will occur
over the north end of the valley Tuesday afternoon into early
evening but confidence remains low at this time. Strong winds
Tuesday night and Wednesday will gradually raise the snow levels
above the foothills to around 3000 to 3500 ft. A Winter Storm
Watch for the foothills and mountains continues late Tuesday into
Friday for the Sierra Nevada and through Wednesday morning for the
foothills which could see significant amounts of snow. Snowfall
amounts that low will depend on how the snow levels behave. Models
mixed at how low snow levels will start out. The NAM has
extremely low levels while GFS seems more reasonable. Have leaned
more toward the NBM which is closer to the GFS with a nudge lower
for the first couple of periods towards the NAM.

Strong winds should bring relatively warmer air and mix out the
colder air to raise snow levels some. Confidence continues to be
low on length of time of the low snow levels which will determine
either more or less snow than currently forecasted in the
foothills. Winds in the valley look to range between 20 and 40
mph with gusts potentially surfacing between 50 to 70 mph at
times Tuesday night through Wednesday. Winds over the mountains may
be a bit stronger than the valley with wind gusts 100+ over the
peaks along the crest. Potential for downed trees and powerlines
throughout the interior with this event. Significant rainfall over
the lower elevations will likely cause some street flooding
concerns. Reservoirs are low so this will be a good event to
capture rainfall.

The initial low level warning for snow will gradually be adjusted
upward as we progress through the event.

&&


.EXTENDED DISCUSSION (Thursday THROUGH Sunday)...

Active pattern expected across interior NorCal through the
extended period. Ensemble guidance continues to depict a trough
off the coast with strong, moist southwest flow over the region,
resulting in widespread moderate to heavy precipitation. The EPS
EFI forecast for QPF indicates the very unusual nature of this
precipitation event. Moderate to heavy rain may bring ashflows to
newly burned areas, including the LNU Complex and the SCU Complex.
NBM indicates multiple feet of snow for elevations above 3000
feet through Friday, resulting in severe mountain travel impacts.
A relative break will be possible late Friday as the mid-week
trough shifts east, but widespread precipitation will likely
return next weekend as the long-wave trough over the eastern
Pacific reloads with more upstream energy dropping down from the
Gulf of Alaska. Mountain travel is not advised. If you must travel,
carry, extra warm clothing and food, and be prepared for major
travel delays, possible road closures and whiteout conditions at
times.
&&

.AVIATION...

Pacific storm will continue to bring rain and mountain snow with
MVFR conditions in the valley and IFR/LIFR over the mountains.
Improving conditions in the Central Valley by 10Z-14Z Monday and
in the Sierra after 00Z-03Z Tuesday.
&&

.STO WATCHES/WARNINGS/ADVISORIES...
Winter Weather Advisory until 9 AM PST Monday for West Slope
Northern Sierra Nevada-Western Plumas County/Lassen Park.

Winter Weather Advisory from 9 PM this evening to 9 AM PST
Monday for Motherlode above 2500 ft.

Hard Freeze Watch in effect from late Monday night through
Tuesday morning below 2000 ft.

Winter Storm Watch from Tuesday afternoon through Thursday
afternoon for Mountains Southwestern Shasta County to Western
Colusa County-Shasta Lake Area / Northern Shasta County.

Winter Storm Watch from Tuesday evening through late Thursday
night for Burney Basin / Eastern Shasta County-West Slope
Northern Sierra Nevada-Western Plumas County/Lassen Park.

Winter Storm Watch from Tuesday evening through Wednesday
morning for Motherlode-Northeast Foothills/Sacramento Valley.

&&

$$
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