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Mammoth Mountain (Base: 7,953', Top: 11,053')

6-day Forecast Discussion Updated for Monday, February 6, 2012

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AVERAGE TEMPERATURES FOR THIS TIME OF YEAR;

-At 6,230 feet (Tahoe City); Low 18, High 39 (Highest ~ 54 on February 01, 1995, Lowest ~ -04 on January 30, in 1933)

::: MOSTLY SUNNY AND COOL TODAY/ COOLER + LIGHT SNOW SHOWERS ON TUESDAY/ MOSTLY SUNNY WEDNESDAY THROUGH FRIDAY :::

DETAILED SUMMARY FOR THE WEEK -//> UPDATED FOR MONDAY, FEBRUARY 6th...Today --MOSTLY SUNNY AND COOL-- -> Skies are expected to be mostly clear/ partly cloudy, and winds mostly light as high pressure holds across the western US, up into Canada. Temperatures do not warm up too much. Light snow showers develop late tonight as a southward-bound low pressure system moves in.

Tuesday --CHANCE FOR SNOW-- -> A low pressure system moves in off of the Pacific, and is on a southward path as it enters the area. What this does is take the eastward push of winds (for orographic lifting) and makes it a mostly weak northward push of air. We expect some help from instability aloft, but not much. Light snow is then expected, off and on Tuesday and mostly ending Tuesday night as this low moves south toward Baja CA.

Wednesday through Friday --BECOMING MOSTLY SUNNY-- -> Low pressure moves south with mostly sunny skies on Wednesday, then more sun Thursday and Friday. A low pressure system (not strong) will approach on the coastline on Friday. CM



 
Tuesday
Feb 07, 2012

Cloudy and cooler with off/ on light snow showers during the day and decreasing overnight (mostly isolated snow showers overnight).

Hi 34°f / 1°c (base)
Lo 23°f / -5°c (base)

Sky Condition:
Cloudy and cooler with off/ on light snow showers during the day and decreasing overnight (mostly isolated snow showers overnight).

Precipitation:
50% chance for snow.

Snow Potential
1 to maybe 2 inches of snowfall.

Wind:
S at 5-15mph. Above 8,500 feet; S at 10-20mph.

Wednesday
Feb 08, 2012

Clearing to partly cloudy and cool with north breezes.

Hi 40°f / 4°c (base)
Lo 23°f / -5°c (base)

Sky Condition:
Clearing to partly cloudy and cool with north breezes.

Precipitation:
None expected.

Snow Potential
None expected.

Wind:
Becoming NE at 5-15mph. Above 8,500 feet; NE at 10-20mph.

Thursday
Feb 09, 2012

Mostly clear and milder with continued north breezes.

Hi 40°f / 4°c (base)
Lo 27°f / -3°c (base)

Sky Condition:
Mostly clear and milder with continued north breezes.

Precipitation:
None expected.

Snow Potential
None expected.

Wind:
NE at 5-15mph. Above 8,500 feet; NE at 10-20mph.

Friday
Feb 10, 2012

Partly cloudy and mild with breezes shifting (approaching low pressure system).

Hi 43°f / 6°c (base)
Lo 27°f / -3°c (base)

Sky Condition:
Partly cloudy and mild with breezes shifting (approaching low pressure system).

Precipitation:
None expected.

Snow Potential
None expected.

Wind:
Becoming SW at 5-15mph. Above 8,500 feet; SW at 10-20mph.

Saturday
Feb 11, 2012

Partly Cloudy

Hi 35°f / 2°c (base)
Lo 23°f / -5°c (base)

Sky Condition:
Partly Cloudy

Precipitation:
None expected

Wind:
NE at up to 5 mph.

Sunday
Feb 12, 2012

Partly Cloudy

Hi 40°f / 4°c (base)
Lo 23°f / -5°c (base)

Sky Condition:
Partly Cloudy

Precipitation:
None expected

Wind:
N at up to 5 mph.

Long range forecast / discussion...February 12 to 15

--Overall, high pressure ridging aloft across the west holds until mid February. Despite this ridge, a low pressure system moves in next Saturday and Sunday with a chance for snow. We would expect light snow ( < 4") from this system, unless it moves right through, and in that case we could see more. High pressure ridges back in after this system, holding across the western US. We are watching for better potential snow as we move into the 2nd half of February.

We have a moderate La Nina SST pattern in place through the winter period, weakening now and through the spring, into the summer. CM

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