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Walsh Station, California 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for 2 Miles SE Rosemont CA
National Weather Service Forecast for: 2 Miles SE Rosemont CA
Issued by: National Weather Service Sacramento, CA
Updated: 12:42 pm PST Dec 29, 2024
 
Tonight

Tonight: Patchy fog after 5am.  Otherwise, partly cloudy, with a low around 40. Southwest wind around 6 mph becoming calm.
Mostly Clear
then Patchy
Fog
Monday

Monday: Sunny, with a high near 54. North northwest wind 6 to 8 mph.
Sunny

Monday
Night
Monday Night: Patchy frost after 2am.  Otherwise, mostly clear, with a low around 34. Calm wind.
Mostly Clear
then Patchy
Frost
Tuesday

Tuesday: Areas of frost before 9am.  Otherwise, mostly sunny, with a high near 52. Light west northwest wind.
Areas Frost
then Mostly
Sunny
Tuesday
Night
Tuesday Night: Mostly cloudy, with a low around 37. Calm wind.
Mostly Cloudy

New
Year's
Day
New Year's Day: Partly sunny, with a high near 53.
Partly Sunny

Wednesday
Night
Wednesday Night: Mostly cloudy, with a low around 40.
Mostly Cloudy

Thursday

Thursday: Partly sunny, with a high near 58.
Partly Sunny

Thursday
Night
Thursday Night: A slight chance of showers after 4am.  Mostly cloudy, with a low around 43.
Partly Cloudy
then Slight
Chance
Showers
Lo 40 °F Hi 54 °F Lo 34 °F Hi 52 °F Lo 37 °F Hi 53 °F Lo 40 °F Hi 58 °F Lo 43 °F

 

Tonight
 
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 40. Southwest wind around 6 mph becoming calm.
Monday
 
Sunny, with a high near 54. North northwest wind 6 to 8 mph.
Monday Night
 
Patchy frost after 2am. Otherwise, mostly clear, with a low around 34. Calm wind.
Tuesday
 
Areas of frost before 9am. Otherwise, mostly sunny, with a high near 52. Light west northwest wind.
Tuesday Night
 
Mostly cloudy, with a low around 37. Calm wind.
New Year's Day
 
Partly sunny, with a high near 53.
Wednesday Night
 
Mostly cloudy, with a low around 40.
Thursday
 
Partly sunny, with a high near 58.
Thursday Night
 
A slight chance of showers after 4am. Mostly cloudy, with a low around 43.
Friday
 
A chance of showers, mainly after 10am. Mostly cloudy, with a high near 59.
Friday Night
 
A chance of showers. Mostly cloudy, with a low around 44.
Saturday
 
Mostly cloudy, with a high near 58.
Saturday Night
 
Mostly cloudy, with a low around 41.
Sunday
 
Mostly sunny, with a high near 58.

 

Forecast from NOAA-NWS for 2 Miles SE Rosemont CA.

Weather Forecast Discussion
108
FXUS66 KSTO 292031
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
1231 PM PST Sun Dec 29 2024

.SYNOPSIS...
Active weather continues through this evening with mountain snow,
isolated Valley/foothill thunderstorms, breezy winds, and rain
showers. Dry weather returns tomorrow and continues through the
week with cold morning lows and patchy Valley frost and fog.

&&

.DISCUSSION...
Widespread Valley rain has mostly ended this afternoon, with
showers primarily in the northern Sacramento Valley and
foothills/mountains of the Sierra. A line of showers is
approaching the Redding/Red Bluff area at the time of this
writing, so additional brief moderate to heavy rain is still
possible. Mountain snow has led to chain controls along I-80 and
US-50, and will likely continue as colder air moves into the
higher elevations with the passing of the primary cold front. Snow
levels are dropping to around 6500-7500 feet or so, as evident by
CalTrans cameras and the Colfax S-band Snow Level Radar. Looking
at the SPC Hourly Mesoscale Analysis, a pool of 250 J/kg surface-
based CAPE is developing in the northern Sacramento Valley, so
isolated post-frontal thunderstorms are still on the table this
afternoon through the evening. Gusty southerly winds are starting
to weaken as well, but occasional gusts up to 30 mph are still
possible this afternoon in the current Wind Advisory locations. We
will begin to clear out later in the evening with continued
clearing as we enter the new work week.

Ensemble guidance shows this system vacating the area eastward
with upper level ridging filling in over the region by tomorrow
night. With the synoptic pattern shift, we will see cooler high
temperatures and cold morning low temperatures, along with morning
fog and patchy frost. Periods of breezy northerly winds are
expected to also develop tomorrow in and along the I-5 corridor as
our synoptic pattern changes. Forecast high temperatures for the
Valley Monday through Wednesday will be around 5-7 degrees cooler
than our recent run of low to mid 60s. Overnight low temperatures
will fall tonight into low 30s to low 40s across the Valley, with
the colder temperatures in the northern Sacramento Valley. Tuesday
morning, the Valley will see widespread low to mid 30s.
Widespread below freezing temperatures are not anticipated,
however NBM probabilities of reaching 32 degrees or colder are
around 10-40% in the Valley Tuesday morning so a few areas in the
Valley may reach 32 degrees or colder. Probabilities drop
considerably for 32 degrees or colder on Wednesday and Thursday
AM, however mid 30s to low 40s morning lows are still expected.

The EC Ensemble is also hinting a weak shortwave moving through
Oregon and Washington Wednesday, and the NBM is responding by
adding a slight (10-20%) chance of showers from Redding northward
through Thursday. The weak trough may track further north than
current projections, so the current precipitation forecast will
likely fluctuate as we move into the week. As it stands now,
current totals are below 0.25" inches so a wetting rain is likely
the only impacts at this time.

Wood

&&

.EXTENDED DISCUSSION (Thursday THROUGH Sunday)...

Thursday upper level ridging will once again be the dominate
synoptic pattern over interior NorCal, with high temperatures
warming into the upper 50s with a chance to crack 60 in the Valley
possible. Clusters still hint at the possibility of a trough
entering the area towards the end of the work week through
Saturday. Current NBM rainfall totals show the bulk of
precipitation would once again be confined mostly to Shasta
County, southern Cascades, and the foothills/Sierra. Little snow
impacts are expected at this time, however as we move through the
week check back for forecast updates as guidance becomes more
clear on potential precipitable impacts.

&&

.AVIATION...

Areas MVFR/IFR with local LIFR in low ceilings and/or
precipitation until this afternoon in the Valley, and until 06z
Monday in the mountains. Isolated thunderstorms across portions
of the Valley and foothills through 00z Monday. Snow levels
5000-6000 feet. Southeasterly Valley wind gusts up to 25 kts until
00z Monday. Over mountains, areas of southwest to west surface
wind gusts to 35 to 55 kts until 00z Monday. MVFR with local in
BR/FG across portions of the southern Sacramento and northern San
Joaquin valleys after 06z Monday. Locally breezy northerly wind
gusts 15-20 kts across portions of the Sacramento Valley after 18z
Monday.

&&

.STO WATCHES/WARNINGS/ADVISORIES...
Wind Advisory until 2 PM PST this afternoon for Central
Sacramento Valley-Northeast Foothills/Sacramento Valley-Northern
Sacramento Valley.

Winter Weather Advisory until 8 PM PST this evening for West
Slope Northern Sierra Nevada-Western Plumas County/Lassen Park.

&&

$$
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather








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