San Francisco, CA – Fire risk is rising across the Bay Area this week as forecasters warn of triple-digit temperatures, dry lightning, and breezy conditions fueled by remnants of Tropical Storm Mario.
Heat Wave and Fire Risk
The National Weather Service (NWS) said on Tuesday that interior parts of the Bay Area could see highs in the 90s to over 100 degrees. Combined with humidity levels dropping into the teens and wind gusts of 20–25 mph, the region faces near-critical fire weather conditions.
“Compound the heat with low humidity this afternoon in the teens to 20% range and typical gusts up to 20-25 mph will result in near critical fire weather conditions,” the NWS stated.
Biggest Concern: Dry Lightning
Meteorologists say the biggest concern comes on Wednesday and Thursday, when dry lightning storms could develop. The lightning risk is linked to Tropical Storm Mario, currently in the Pacific Ocean and expected to push moisture into California midweek.
No Red Flag Warnings or fire watches have been issued yet, but the NWS noted conditions could change quickly.
Heat Risk for Vulnerable Groups
The Bay Area remains under a moderate heat risk advisory on Tuesday, with seniors over 65, infants, and others sensitive to heat most at risk.
“Today is forecast to be the hottest day of the week, generally speaking, especially across the interior,” said Roger Gass, a meteorologist with the National Weather Service.
Muggy Conditions Possible
The moisture from Tropical Storm Mario could also make the air feel more humid, especially in San Francisco, where relative humidity levels may rise to 70–80%.
How are you preparing for the Bay Area heat wave and fire risk? Share your tips and thoughts in the comments below.
