National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Sinlaku Continues to Impact the Marianas; Severe Weather from the Central US to the Northeast; Late-Season Snow in the Northwest

Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Alturas (KAAT)

Lat: 41.48362°NLon: 120.5615°WElev: 4383.0ft.

Overcast

46°F

8°C

Humidity 61%
Wind Speed SW 17 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 15 Apr 09:35 AM PDT
Extended Forecast for

11 Miles ENE Bieber CA

Wind Advisory April 15, 11:00am until April 15, 08:00pm
Click here for hazard details and duration
Wind Advisory

  • Today

    Today: Rain likely, mainly after 5pm. Snow level 6700 feet. Mostly cloudy, with a high near 52. Breezy, with a west southwest wind 9 to 14 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 60%.

    High: 52 °F

    Slight Chance
    Rain then
    Rain Likely
    and Breezy

  • Tonight

    Tonight: Rain before 10pm, then a chance of snow between 10pm and 2am. Low around 25. Breezy, with a west southwest wind 19 to 24 mph becoming north 7 to 12 mph in the evening. Winds could gust as high as 37 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 25 °F

    Rain/Snow and
    Breezy then
    Slight Chance
    Snow

  • Thursday

    Thursday: Sunny, with a high near 47. Light north wind increasing to 6 to 11 mph in the afternoon.

    High: 47 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 25. North wind 6 to 11 mph becoming light east northeast in the evening.

    Low: 25 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 58. Calm wind becoming east 5 to 7 mph in the afternoon.

    High: 58 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain after 11pm. Snow level 7800 feet lowering to 6600 feet after midnight . Mostly cloudy, with a low around 38.

    Low: 38 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A chance of rain. Snow level 6300 feet rising to 6900 feet in the afternoon. Mostly cloudy, with a high near 63.

    High: 63 °F

    Chance Rain

Detailed Forecast

Today
Rain likely, mainly after 5pm. Snow level 6700 feet. Mostly cloudy, with a high near 52. Breezy, with a west southwest wind 9 to 14 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 60%.
Tonight
Rain before 10pm, then a chance of snow between 10pm and 2am. Low around 25. Breezy, with a west southwest wind 19 to 24 mph becoming north 7 to 12 mph in the evening. Winds could gust as high as 37 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Thursday
Sunny, with a high near 47. Light north wind increasing to 6 to 11 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 25. North wind 6 to 11 mph becoming light east northeast in the evening.
Friday
Sunny, with a high near 58. Calm wind becoming east 5 to 7 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 33.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
A slight chance of rain after 11pm. Snow level 7800 feet lowering to 6600 feet after midnight . Mostly cloudy, with a low around 38.
Sunday
A chance of rain. Snow level 6300 feet rising to 6900 feet in the afternoon. Mostly cloudy, with a high near 63.
Sunday Night
A chance of rain. Snow level 6900 feet lowering to 5800 feet after midnight . Mostly cloudy, with a low around 38.
Monday
A chance of rain. Snow level 5500 feet rising to 6200 feet in the afternoon. Partly sunny, with a high near 62.
Monday Night
A chance of rain. Snow level 6500 feet lowering to 5700 feet after midnight . Mostly cloudy, with a low around 37.
Tuesday
A chance of rain. Snow level 5500 feet rising to 6600 feet in the afternoon. Partly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles ENE Bieber CA
 41.19°N 120.96°W (Elev. 4199 ft)
Last Update:
5:56 am PDT Apr 15, 2026
Forecast Valid:
9am PDT Apr 15, 2026-6pm PDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation