A tropical cocktail of weather activity began to engulf the Bay Area on Sunday night, providing the region with a mixture of light rain, sprinkles of lightning and warm temperatures heading into Monday.
While chances were slight at-best as of Monday morning, National Weather Service forecasts showed a chance of precipitation to pair with high temperatures throughout the day. Cities such as Concord, Hayward, Livermore, Napa, Oakland, San Francisco, San Mateo, San Rafael and Santa Rosa had 15% chances of rain in the morning hours Monday.
Slight chance for light showers through the evening today as upper low continues to draw in midlevel moisture to the Bay Area and Central Coast.
It’s also going to be another hot day inland, so be sure to practice heat safety! #CAwx pic.twitter.com/TWZyG1vpMM
— NWS Bay Area (@NWSBayArea) August 14, 2023
As the day progresses, chances raise to 15% in southern parts of the Bay Area, like in San Jose and Santa Cruz. While rain chances were relatively low, the moisture paired with rising temperatures could make for a muggy day with humidity around 80%, according to the NWS.
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High temperature predictions around the Bay Area on Monday included 90 degrees in San Jose, 99 in Livermore, 98 in Concord, 78 in Oakland and 72 in San Francisco — with a similar forecast on Tuesday. The NWS issued a moderate HeatRisk for Monday and Tuesday, warning residents to avoid strenuous outdoor activity and not to leave children and pets inside of parked vehicles.
The rising temperatures were expected to arrive just after a string of thunderstorms hit parts of the East Bay and Contra Costa County on Sunday night. Lighting strikes were reported in Walnut Grove, Discovery Bay and just south of Buchanan Field Airport in Concord, according to the NWS. At the Oakland International Airport, winds were reported to gust as high as 40 miles per hour.
GOES GLM data is showing a few flashes along the Contra Costa County line. Thunder roars, go indoors! #cawx pic.twitter.com/Di4XSdHXak
— NWS Bay Area (@NWSBayArea) August 14, 2023
