Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

Berkeley Lab (LBNL1)

Lat: 37.8771°NLon: 122.2486°WElev: 888.0ft.

57°F

14°C

Humidity	76%
Wind Speed	SSE 11 MPH
Barometer	NA
Dewpoint	50°F (10°C)
Visibility	NA
Last update	11 Apr 03:15 PM PDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

2 Miles N Hercules CA

This Afternoon
High: 61 °F
Heavy Rain
Tonight
Low: 49 °F
Heavy Rain
Sunday
High: 58 °F
Showers
Sunday Night
Low: 47 °F
Chance
Showers then
Partly Cloudy
Monday
High: 63 °F
Mostly Sunny
Monday Night
Low: 47 °F
Mostly Clear
Tuesday
High: 65 °F
Sunny
Tuesday Night
Low: 47 °F
Mostly Clear
Wednesday
High: 65 °F
Sunny

Detailed Forecast

This Afternoon

A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4pm. Some of the storms could produce heavy rainfall. High near 61. South wind around 20 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and thunderstorms, mainly before 4am, then showers likely and possibly a thunderstorm after 5am. Some of the storms could produce heavy rainfall. Low around 49. South southwest wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Sunday

Showers and thunderstorms before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. High near 58. West southwest wind 14 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night

A 30 percent chance of showers before 11pm. Partly cloudy, with a low around 47. West southwest wind 9 to 14 mph becoming light west after midnight. Winds could gust as high as 21 mph.

Monday

Mostly sunny, with a high near 63. West wind 3 to 8 mph.

Monday Night

Mostly clear, with a low around 47.

Tuesday

Sunny, with a high near 65.

Tuesday Night

Mostly clear, with a low around 47.

Wednesday

Sunny, with a high near 65.

Wednesday Night

Partly cloudy, with a low around 48.