Many Bay Area residents who are putting on shorts and T-shirts for the warm weather Thursday and Friday are being reminded to also take out their common sense to stay safe in the heat.
A heat advisory went into effect at 1 p.m. as unseasonably warm temperatures reach the lower 90s and high 80s inland and the high 70s and low 80s in coastal areas.
The National Weather Service will keep the advisory in effect until 9 p.m.
Diana Henderson, a weather service forecaster, advised people drink plenty of water, stay inside and "don't leave the kids or dog in the car. Period."
For heat-sensitive populations, such as the elderly, infirm or young children, Henderson advised keeping them cool.
"If you have folks that you care about you want to keep tabs on them," she said.
Weather officials advised doing exercise or other strenuous activities in the early morning or evening to avoid heat exhaustion and heat stroke.
If residents need to work outside, experts recommend resting frequently and heading to a shaded or air-conditioned area. Staying hydrated and wearing loose and light clothing is also advised.
Most cooling centers, such as those sprinkled throughout Contra Costa, Alameda, Marin, San Mateo and Santa Clara counties, are not scheduled to open Thursday despite the heat.
The refuges from scalding temperatures tend to open later in the season, when more prolonged periods of warm weather occur, according to an employee at the San Ramon Community Center.
The community center is one of several facilities within Contra Costa County that serves as a cooling center during heat waves.
San Francisco Animal Care and Control officers will be looking for pets that need to be rescued from overheated cars during the heat wave.
Any dogs or other pets left in vehicles will be rescued and taken to the city shelter.
Pet owners can face a fine up to $1,000 for leaving animals exposed to extreme conditions in vehicles, according to animal care officials.
Animal care officials reminded residents that cars left in the sun, and even in shadier areas, can heat up to 120 degrees within 30 minutes and cause heat exhaustion, heat stroke or even death to pets left inside.
Instead, pets should be left at home in a cool place with water.
Henderson said the heat wave today and Friday will cool off by the end of the weekend with a slight chance of rain Sunday night.
Some areas by Wednesday will see temperatures plummet by 20 degrees.
The highest temperatures were hit at around 3 p.m. Thursday afternoon, with inland areas reaching scorching temperatures.
"We'll still have possibility of breaking some records," Henderson said.
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