WE'RE GOING TO HAVE AN UPDATE ON THAT IN JUST A MOMENT, RIGHT? >> THAT'S RIGHT. >> WE WANT TO START WITH METEOROLOGIST KARI HALL, BECAUSE AS WE'VE BEEN SAYING, THE HOT TEMPERATURES ARE COMING THIS WEEKEND AND FOLKS NEED TO BE PREPARED. >> YOU NEED TO BE PREPARED, AND REALLY JUST A SHORT DRIVE CAN CHANGE WHAT KIND OF WEATHER YOU'RE DEALING WITH ACROSS THE BAY AREA. TAKE A LOOK AT THIS EXCESSIVE HEAT WARNING. IT WILL BE IN EFFECT FOR THE INLAND AREAS AND SOME OF THE SPOTS SHADED IN PINK WILL BE INCLUDED IN THAT. IT STARTS TOMORROW MORNING AT 11:00 AND IT DOES NOT INCLUDE SAN FRANCISCO, THE COASTLINE OR THE INNER BAY AND SPOTS LIKE OAKLAND, HAYWARD OR IN FREMONT. AS YOU MAKE YOUR WAY INLAND, THE TEMPERATURES RAMP UP AND WE COULD SEE A WIDESPREAD SWATH OF TRIPLE-DIGIT TEMPERATURES ACROSS THE BAY AREA, AND ALSO THAT INCREASES THE RISK OF HEAT-RELATED ILLNESS. WE'LL BE DEALING WITH THAT THIS WEEKEND. AT LEAST WE'RE STARTING OUT COOL. TAKE A LOOK AT SANTA ROSA, WHERE WE'RE STARTING WITH LOW 50s AND A FEW CLOUDS. IT WILL BE CLEARING OUT AS WE HEAD TOWARD 8:00 TO 9:00, THE REST OF THE DAY IS SUNNY AND TEMPERATURES WILL BE WARMING UP, REACHING INTO THE MID-80s BY 1:00 THIS AFTERNOON. TODAY WE'RE LOOKING AT HIGHS REACHING UP TO 95 IN LIVERMORE, BUT THAT'S STILL ABOUT 9 DEGREES BELOW THE RECORD OF 104 DEGREES. IN SANTA ROSA WE'RE HEADED FOR THE MID-90s WHILE SAN JOSE WILL SEE MID-80s. WE'LL BE WATCHING THE NUMBERS GO UP TOMORROW. >>> LET'S HEAD OVER TO KRIS SANCHEZ, WITH DETAILS ON A FIRE WE KNOW WE WILL SEE AND THAT SPARE THE AIR ALERT. >> WE EXPECT THE AIR WILL BE UNHEALTHY BECAUSE OF THE HEAT, SO IF WE CAN MINIMIZE THE EXHAUST, THAT WILL DEFINITELY HELP OUT. THIS IS OUR LIVE CAMERA OVER DUBLIN, ONE OF THE AREAS THAT SMOG WILL LIKELY ACCUMULATE, MAKING THE AIR UNHEALTHY TODAY. CONSIDER WORKING FROM HOME IF YOU CAN, RIDE YOUR BIKE OR TAKE MASS TRANSIT IF POSSIBLE. WE COULD EXPECT TO SEE MORE THAN JUST EXHAUST IN THE AIR TODAY. WE EXPECT TO SEE SMOKE. CAL FIRE SET FIRE TO PART OF A 288 ACRE AREA OF MOUNT HAMILTON IN SANTA CLARA COUNTY. THIS IS A PRESCRIBED BURN. WHILE A PRESCRIBED BURN DURING A HEAT WAVE MIGHT SEEM LIKE A BAD IDEA TO REGULAR JOES LIKE US, THE BATTALION CHIEF SAYS THIS HAS BEEN IN THE WORKS FOR A WHILE. THE GRASSY HILLSIDE OF MOUNT HAMILTON WILL PROVIDE AMPLE PRACTICE FOR CAL FIRE AND THE OTHER AGENCIES PARTICIPATING, BECAUSE OF THE WET WEATHER, INVASIVE PLANTS LIKE MUSTARD GRASS ARE GROWING WILD AND RIGHT NOW THEY ARE AT THE PEAK OF FLAMMABLE. CAL FIRE ALSO GOT TO PRACTICE WITH DRONES AND THOSE ARE OPERATED BY THE PARTNERS AT SPRING VALLEY FIRE. IF YOU SEE SMOKE IN THE AREA OF MOUNT HAMILTON, NO