Dangerous Heat in the West; Coastal Flooding & High Rip Current Risk into the Weekend on the East Coast; Flash Flooding Possible in the Southeast

A dangerous, record heat wave continues for the Desert Southwest and the Central Valley of California through Saturday, and the Pacific Northwest through Tuesday. Coastal flooding is expected through tonight at high tide along the Eastern Seaboard from Erin, while the high rip current risk and dangerous surf continue through the weekend. Flash flooding possible today in Georgia and South Carolina. Read More >

Hazardous Weather Conditions

Heat Advisory until August 23, 09:00 PM PDT

Current conditions at

Mount Diablo Summit Museum and Trailhead Rooftop (SJS02)

Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.

79°F

26°C

Humidity	13%
Wind Speed	SSE 1 MPH
Barometer	NA
Dewpoint	25°F (-4°C)
Visibility	NA
Heat Index	78°F (26°C)
Last update	22 Aug 05:50 AM PDT

More Information:

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

Extended Forecast for

5 Miles NNE San Ramon CA

Heat Advisory August 22, 06:11am until August 23, 09:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory August 22, 06:11am until August 23, 09:00pm
NOW until 9:00pm Sat
Heat Advisory
Today
High: 95 °F
Mostly Sunny
Tonight
Low: 60 °F
Partly Cloudy
Saturday
High: 91 °F
Sunny
Saturday Night
Low: 58 °F
Partly Cloudy
Sunday
High: 86 °F
Mostly Sunny
Sunday Night
Low: 57 °F
Partly Cloudy
Monday
High: 87 °F
Mostly Sunny
Monday Night
Low: 57 °F
Partly Cloudy