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Moskowite Corner, CA

Full City Profile · California · Napa County County

3.2 /5.0
B Good
136 Population 48/sq mi density
$141,736 Median Income $44,579 per capita
61°F Avg Temperature 326 sunny days/yr
235 Violent Crime/100K 1,343 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.8 / 5.0
$141,736 median income, 0.0% unemployment
F
Safety
1.0 / 5.0
235 violent crimes/100K
B+
Education
3.7 / 5.0
33.9% bachelor's degree or higher
Moskowite Corner enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 47°F in January while summers reach 76°F in July. The area gets 326 sunny days per year. Annual precipitation totals 28.0 inches. The area receives 0.0 inches of snow annually. Air quality is rated Good with a median AQI of 48.

Temperature

47°F Jan (8°C) 76°F Jul (24°C)
Annual Average60.6°F
12% above US avg
January Average47°F (8°C)
July Average76°F (24°C)
Sunny Days326 days/yr

Geography

Elevation833 ft (254 m)
Area2.8 sq mi (7.3 km²)
Population Density48/sq mi
Coordinates38.4439°N, 122.1920°W
TimezoneAmerica/Los_Angeles
CountyNapa County County
Nearest AirportSacramento International (SMF)
37 miles away

Precipitation & Snow

Annual Rainfall 28.0"
26% below US avg
Snowfall 0.0"
Wettest Month (Jan) 7.17"
Driest Month (Jul) 0.04"

Air Quality

AQI Median48.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively High
Risk Score95.3 / 100
Social Vulnerability38.5 / 100
Community Resilience76.0 / 100

Hazard Breakdown

Tornado Very Low
Earthquake Relatively High
Wildfire Relatively Moderate
Flood Relatively High
Hail Very Low
Strong Wind Very Low
Heat Wave Relatively Low
Winter Weather Very Low
Lightning Relatively Low
Drought Very High
Cold Wave No Rating
Landslide Relatively High
Coastal Flood Relatively Moderate
Tsunami Very Low
Volcano Very Low
Avalanche Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

4,310 earthquakes (M2.5+) within 150 km since 1990. Strongest: M6.0. Most recent: M2.7 on Aug 27, 2025.

Aug 24, 2014 The 2014 South Napa, California Earthquake M6.0 28 km
Aug 10, 2016 20 km NNE of Upper Lake, California M5.1 112 km
Sep 3, 2000 5 km WSW of Yountville, California M4.9 21 km
Sep 4, 1995 13 km SW of Middletown, California M4.8 55 km
Apr 18, 2007 15 km N of Potter Valley, California M4.8 138 km
May 12, 2006 7 km W of Cobb, California M4.7 68 km
May 21, 1996 8 km ESE of East Foothills, California M4.7 127 km
Aug 11, 1993 14 km ESE of Alum Rock, California M4.7 134 km
Jan 2, 2025 4 km NW of Cobb, CA M4.7 66 km
Aug 18, 1999 0 km S of Bolinas, California M4.6 74 km
Jan 11, 2000 6 km N of Geyserville, California M4.6 72 km
Feb 18, 2004 4 km WNW of Cobb, California M4.6 66 km
Jan 12, 2014 8 km W of Cobb, California M4.5 68 km
Sep 19, 2023 15 km SW of Westley, CA M4.5 137 km
Sep 25, 2012 3 km N of Talmage, California M4.5 117 km
Aug 3, 2006 5 km W of Glen Ellen, California M4.5 36 km
Jun 8, 2024 7 km NW of The Geysers, CA M4.5 69 km
Sep 19, 1992 7 km NW of Cobb, California M4.5 70 km
Apr 24, 2007 7 km WSW of Cobb, California M4.5 65 km
Jun 3, 2023 2km NW of The Geysers, CA M4.5 64 km
Source: USGS (M2.5+, 1990–2025)

Tornado History

77 tornadoes (EF0+) within 100 km since 1950. Strongest: EF2. Total: 1 injury.

Date Rating Distance Fatalities
Feb 7, 1978 EF2 71 km 0
Jun 1, 1958 EF2 71 km 0
Dec 24, 2015 EF1 98 km 0
Oct 22, 2012 EF1 84 km 0
Oct 22, 2012 EF1 91 km 0
Mar 18, 2011 EF1 45 km 0
Jan 23, 2010 EF1 70 km 0
Mar 20, 2005 EF1 91 km 0
Jan 27, 2005 EF1 83 km 0
Dec 5, 1998 EF1 44 km 0
Dec 23, 1996 EF1 68 km 0
Feb 22, 1996 EF1 48 km 0
Dec 2, 1992 EF1 56 km 0
Dec 2, 1992 EF1 62 km 0
Dec 2, 1992 EF1 56 km 0
Apr 19, 1988 EF1 93 km 0
Apr 19, 1988 EF1 96 km 0
Mar 22, 1983 EF1 79 km 0
Feb 27, 1983 EF1 44 km 0
May 31, 1967 EF1 94 km 0
Source: NOAA SPC (EF0+, 1950–2024)

Tsunami History

4 tsunamis recorded within 500 km. Highest wave on record: 4.5 m (15 ft).

Year Location Cause Max Wave Deaths Distance
1868 N. CALIFORNIA Eruption + Earthquake 4.5 m 30 83 km
1856 N. CALIFORNIA Eruption + Earthquake 0.6 m 105 km
1906 N. CALIFORNIA Eruption + Earthquake 0.1 m 87 km
1865 N. CALIFORNIA Eruption + Earthquake 141 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

1 volcano within 200 km. Closest: Clear Lake (77 km).

Name Type Elevation Last Eruption Distance
Clear Lake Volcanic field 1,439 m (4,721 ft) Unknown 77 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Wildfire History

20 wildfires (100+ acres) within 100 km. Largest: HENNESSEY (314,241 ac, 2020).

Year Name Acres Distance
2020 HENNESSEY 314,241 21 km
2015 ROCKY 96,125 57 km
2018 COUNTY 92,450 27 km
1996 FORK 83,209 97 km
2019 KINCADE 77,780 57 km
2015 VALLEY 77,507 53 km
2020 GLASS 68,020 33 km
2017 NUNS 56,883 29 km
2020 WALLBRIDGE 55,194 74 km
2017 ATLAS 51,664 10 km
2018 RIVER 48,920 99 km
2004 RUMSEY 39,335 36 km
1999 SIXTEEN 37,162 42 km
2017 TUBBS 36,981 45 km
1988 MILLER 35,750 9 km
2017 POCKET 18,691 70 km
2012 SIXTEEN COMPLEX 18,191 64 km
2006 ZAM ASSIST 14,404 43 km
2008 WALKER 12,441 74 km
2004 GEYSERS 12,075 58 km
Source: NIFC/IRWIN (100+ acres)

Monthly Weather

Month Avg Temperature Precipitation Summary
January 47°F (8°C) 7.2 in Wettest
February 49°F (9°C) 5.6 in
March 51°F (11°C) 4.6 in
April 56°F (13°C) 1.9 in
May 61°F (16°C) 0.6 in
June 67°F (20°C) 0.2 in
July 76°F (24°C) 0.0 in Warmest, Driest
August 71°F (22°C) 0.1 in
September 69°F (20°C) 0.5 in
October 62°F (17°C) 1.9 in
November 52°F (11°C) 4.8 in
December 46°F (8°C) 5.4 in Coldest

Moskowite Corner has a seasonal temperature swing of 30°F / from 46°F in December to 76°F in July. Total annual precipitation is 32.8 inches, with January being the wettest month (7.2") and July the driest (0.0").

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