Blizzard Conditions Over the Sierra Nevada Mountains; Critical Fire Weather in the High Plains

A strong winter storm across the west is currently producing heavy mountain snow, strong/high winds, and heavy low elevation rain to parts of the Pacific Northwest, Great Basin, California and the northern/central Rockies. Impacts are expected to continue through Sunday. Across the High Plains, strong winds and dry air will support Critical to Elevated fire weather conditions through the weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Mt. Diablo (SJS02)

Lat: 37.881698°NLon: 121.914155°WElev: 3849.0ft.

NA

34°F

1°C

Humidity 99%
Wind Speed WSW 28 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Wind Chill21°F (-6°C)
Last update 02 Mar 01:45 AM PST
Extended Forecast for

4 Miles SSE Clayton CA

Wind Advisory until March 2, 10:00am
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory until March 2, 10:00am

    NOW until
    10:00am Sat

    Wind Advisory

  • Overnight

    Overnight: Rain, possibly mixed with snow showers.  Steady temperature around 35. Windy, with a west wind 31 to 34 mph, with gusts as high as 50 mph.  Chance of precipitation is 90%. Total nighttime snow accumulation of less than a half inch possible.

    Rain/Snow and
    Windy

    Low: 35 °F

  • Saturday

    Saturday: Rain, possibly mixed with snow showers, becoming all rain after 5pm. Some thunder is also possible.  Steady temperature around 34. Breezy, with a west southwest wind 22 to 26 mph, with gusts as high as 40 mph.  Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Rain/Snow and
    Breezy

    High: 34 °F

  • Saturday
    Night

    Saturday Night: Rain and snow showers before 5am, then a chance of rain showers. Some thunder is also possible.  Low around 32. Breezy, with a west southwest wind 23 to 28 mph decreasing to 17 to 22 mph after midnight. Winds could gust as high as 41 mph.  Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Breezy.
    Rain/Snow
    then Chance
    Rain/Snow

    Low: 32 °F

  • Sunday

    Sunday: A chance of rain and snow showers before 8am, then a chance of rain showers between 8am and 1pm, then a chance of rain and snow showers after 1pm.  Partly sunny, with a high near 40. West southwest wind 14 to 18 mph, with gusts as high as 28 mph.  Chance of precipitation is 40%. Little or no snow accumulation expected.

    Chance
    Rain/Snow

    High: 40 °F

  • Sunday
    Night

    Sunday Night: A slight chance of showers before 4am, then a slight chance of rain after 4am.  Mostly cloudy, with a low around 36. South southwest wind 11 to 17 mph, with gusts as high as 25 mph.  Chance of precipitation is 20%. New precipitation amounts of less than a tenth of an inch possible.

    Slight Chance
    Showers

    Low: 36 °F

  • Monday

    Monday: A 30 percent chance of rain, mainly after 10am.  Partly sunny, with a high near 44. New precipitation amounts of less than a tenth of an inch possible.

    Chance Rain

    High: 44 °F

  • Monday
    Night

    Monday Night: A 50 percent chance of rain.  Mostly cloudy, with a low around 41.

    Chance Rain

    Low: 41 °F

  • Tuesday

    Tuesday: Rain likely, mainly after 10am.  Mostly cloudy, with a high near 46.

    Rain Likely

    High: 46 °F

Detailed Forecast

Overnight
Rain, possibly mixed with snow showers. Steady temperature around 35. Windy, with a west wind 31 to 34 mph, with gusts as high as 50 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of less than a half inch possible.
Saturday
Rain, possibly mixed with snow showers, becoming all rain after 5pm. Some thunder is also possible. Steady temperature around 34. Breezy, with a west southwest wind 22 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Saturday Night
Rain and snow showers before 5am, then a chance of rain showers. Some thunder is also possible. Low around 32. Breezy, with a west southwest wind 23 to 28 mph decreasing to 17 to 22 mph after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Sunday
A chance of rain and snow showers before 8am, then a chance of rain showers between 8am and 1pm, then a chance of rain and snow showers after 1pm. Partly sunny, with a high near 40. West southwest wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Sunday Night
A slight chance of showers before 4am, then a slight chance of rain after 4am. Mostly cloudy, with a low around 36. South southwest wind 11 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 20%. New precipitation amounts of less than a tenth of an inch possible.
Monday
A 30 percent chance of rain, mainly after 10am. Partly sunny, with a high near 44. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 41.
Tuesday
Rain likely, mainly after 10am. Mostly cloudy, with a high near 46.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 40.
Wednesday
A chance of rain. Mostly sunny, with a high near 46.
Wednesday Night
Mostly clear, with a low around 36.
Thursday
Sunny, with a high near 48.
Thursday Night
Clear, with a low around 35.
Friday
Sunny, with a high near 51.
Click Map For Forecast
Point Forecast:
4 Miles SSE Clayton CA
 37.87°N 121.92°W (Elev. 2818 ft)
1:12 am PST Mar 2, 2024
2am PST Mar 2, 2024-6pm PST Mar 8, 2024
 
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