Warmer than normal temperatures are descending on the Bay Area early this week but will give way to the potential for monsoonal thunderstorms and lightening strikes by Friday, the National Weather Service announced this week.
A high-pressure system building over the western United States is pushing local temperatures to anywhere between 5 to 15 degrees higher than average running through Wednesday.
“The far interior areas like Livermore, Concord and San Jose and Santa Rosa will warm into the 90s, potentially the upper 90s, by Tuesday,” Weather Service meteorologist Roger Goss said. “The bay shoreline should stay in the low 80s to lower 90s, with the city of San Francisco seeing highs of about 80 degrees.”
These temperatures will result in a moderate heat risk in the hottest areas, which can lead to heat-related impacts to older people, infants and people who work and play outside.
The warmest day of the week will likely be Tuesday and the Weather Service is warning that the lower relative humidity that develops throughout the early part of the week could lead to increased fire-danger as tropical moisture and the threat of thunderstorms surges up from Southern California as early as Wednesday afternoon.
That system — the remnants of Tropical Storm Mario –could generate isolated dry thunderstorms Wednesday night, Thursday and potentially into Friday morning, Gass said.
“We are going to get 15 to about 30 percent chance for precipitation across the region, mainly over the Central Coast, then spreading throughout the day Thursday into the Bay Area,” he said.
“If a shower were actually to develop into one area, we could see around a quarter of an inch,” Gass said.
The low humidity, paucity of rain and potential for dry lightning strikes will elevate the threat of fire impacts throughout the region, but particularly for the Mayacamas, Santa Cruz, Diablo, Santa Lucia, and Gabilan mountain ranges, according to the Weather Service.
Give me a break! In the Bay Area, September has always been the hottest month of the year.
This year, we’ve been experiencing lower than average temps.
Global Cooling?
Usually whatever the government is telling you the opposite is true.
Coolest Bay Area Summer in 26 years.
I hope it is one of those super loud, high decibel thunder crashes, the kinds that shake your house, trigger car alarms, pealing across the sky. I wouldn’t mind the lightning show along with it except for the high chance of fire. As cool as lightning is to observe, it is not cool enough due to risk of fire in this state.