excessive heat warning

The National Weather Service has issued a heat advisory and an excessive heat warning for much of the Bay Area beginning through Thursday evening, with temperatures expected in the 90s and 100s. Kari Hall and Sharon Katsuda report.

Chief Meteorologist Jeff Ranieri has the details on the warming morning and the dangerous afternoon heat in your seven-day microclimate forecast.

Chief Meteorologist Jeff Ranieri tracks the dangerous heat that will push inland temps into the low 100s in your Microclimate Forecast.

Excessive heat in the Bay Area means increased fire danger and a strain on the power grid. Kari Hall and Thom Jensen report.

Chief Meteorologist Jeff Ranieri tracks the hot 100s and where heat warnings are in place in your 7 day Microclimate Forecast.

Meteorologist Kari Hall has an update on when the hot temperatures arrive in the Microclimate Forecast.

The National Weather Service has issued a heat advisory and an excessive heat warning for much of the Bay Area beginning Wednesday, with temperatures expected in the 90s and 100s.

Meteorologist Kari Hall has an update on when the heat arrives in the Microclimate Forecast.

Record-setting temperatures in the Tri-Valley hit Livermore the hardest Sunday, hitting 111 degrees with unhealthy air quality. Ginger Conejero Saab reports.

The record-breaking heat across the Bay Area continued into Sunday, with some inland East Bay temperatures over 110 degrees.

The record-breaking heat across the Bay Area continued into Sunday, with some inland temperatures over 110 degrees. Thom Jensen reports.

NBC Bay Area meteorologist Vianey Arana previews what to expect with a heat wave set to storm the Bay Area.

Scorching temps are in the forecast and state officials have issued a Flex Alert during the Labor Day weekend.