Rob Mayeda NBC Bay Area
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robmayeda.bsky.social
Rob Mayeda NBC Bay Area
@robmayeda.bsky.social
2.9K followers 230 following 1.1K posts
Bay Area AMS Meteorologist since 2003 CSU/SJSU Lecturer. Formerly KIRO, KCRA, KSBY, KESQ, KNBC, Arizona Daily Wildcat & dad of twinados 👦🏻🌪️👦🏻🌪️
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robmayeda.bsky.social
9/26/2026: the mornings are certainly feeling more like Fall and we’ll see a fairly cloudy and mild wrap up to the weekend. Temps get back to Summer-mode midweek with dry breezes along the hills. #BayArea #SanFrancisco #NorCal #California
September 26, 2026 at 10:42 PM
robmayeda.bsky.social
9/22/2026: The rapid intensification of #HurricanePolo has been something else as of early Tuesday afternoon made possible by ideal conditions for hurricane development. #hurricane #tropicalweather #elnino
September 22, 2026 at 9:14 PM
robmayeda.bsky.social
9/21/2026: Summer ending cool and the first full day of Fall will be hot inland. But don’t get too used to it… cooling returns Friday and into weekend with rain to our north. ⛅️ 🌡️ 🌬️ ⛅️ #BayArea #NorCal #SanFrancisco
September 21, 2026 at 8:23 PM
robmayeda.bsky.social
9/19/2026: A cloudy and cooler finish to the weekend will be followed by a temperature roller coaster briefly back to Summer-like levels by midweek. Then it looks to be another cool down, arriving in time for next weekend. #BayArea #California #SanFrancisco #SanJose #NorCal
September 19, 2026 at 11:30 PM
robmayeda.bsky.social
9/15/2026: Our final days of Summer will likely feel more like Fall. We have a chance of night/am drizzle at times w/ temps mostly in the mid to upper 80s inland into the weekend along with cool mornings. More interesting changes could be lurking down the road…stay tuned on that.
September 15, 2026 at 8:40 PM
robmayeda.bsky.social
Based on expected wind direction, more smoke from the #LucasFire is possible into the Bay Area Monday. The fire has been a little more active on the eastern and southern sides over the last 24 hours at slightly > 4,000 acres as of midday Sunday. 9/13/2026 #BayArea #SanFrancisco #Sacramento #NorCal
September 13, 2026 at 8:10 PM
robmayeda.bsky.social
Turning @oraclepark into an @exploratorium lab for “Weather Day” this week. A few fast facts: leave liquid nitrogen displays to the experts, lead Exploratorium scientist Hannah Weiss’ dress was all weather icons and for a moment, we created the coolest place in SF on the hottest day of the year 🥵
September 13, 2026 at 5:03 AM
robmayeda.bsky.social
9/13/2026 Some warming is expected to start the week but not to the levels (hottest of the year bayside) we saw last week. Try and breezy conditions will likely keep fire danger elevated across interior NorCal, esp mtn areas through midweek. #BayArea #SanFrancisco #NorCal
September 12, 2026 at 11:45 PM
robmayeda.bsky.social
Science! 🧪 with @exploratorium @nbcbayarea friends 🙌🏻☺️
September 10, 2026 at 1:51 AM
robmayeda.bsky.social
Never a bad day when you get to walk out on the field… even more so when it’s @SFGiants Weather Day with @nbcbayarea @Telemundo48 @exploratorium. 9/9/2026
September 9, 2026 at 6:51 PM
robmayeda.bsky.social
9/7/2026: The heat is on again. Expect a big jump in temperatures by midweek as we also watch tropical moisture for a slight chance of showers, although odds look mostly offshore for now. Stay tuned.
September 6, 2026 at 11:16 PM
robmayeda.bsky.social
Saturday sunset view🌇9/5/2026 @NWSBayArea
September 6, 2026 at 2:43 AM
robmayeda.bsky.social
9/5/2026: Dangerous surf through Labor Day Monday followed by the return of warmer temps, esp inland Tropical clouds bring the mugginess and some shower chances midweek. Stay tuned. #BayArea #SanFrancisco #NorCal #California
September 6, 2026 at 12:11 AM
robmayeda.bsky.social
Rain checking in from Walnut Creek … Not your typical 9/3/2026 #CAwx @NWSBayArea
September 4, 2026 at 3:55 AM
robmayeda.bsky.social
Rain loop for September 3rd 2026 🙌🏻☔️
September 4, 2026 at 3:53 AM
robmayeda.bsky.social
9/1/2026: Not your typical start to September when it comes to temps and especially some rain chances over the next two days. #BayArea #SanFrancisco #Napa #SantaRosa #California
September 1, 2026 at 11:30 PM
Reposted by Rob Mayeda NBC Bay Area
edwardsanthonyb.bsky.social
There is at least a chance of rain in some part of the Bay Area every day through Friday.

SF has a decent chance (34%) of picking up at least 0.1”, according to the weather service. There is a much lower chance of more significant amounts (>=0.25”) depending on the strength of systems/fronts.
Probability of >=0.1” rain thru 5pm Thursday: Berkeley, CA: Low-End 0", Expected 0", High-End 0.2". Chance of more than 0.01": 47%; 0.1": 25%; 0.25": 9%; 0.5": 1%. All higher thresholds are 0%. Concord, CA: Low-End 0", Expected 0", High-End 0.1". Chance of more than 0.01": 23%; 0.1": 10%; 0.25": 3%. All higher thresholds are 0%.Gilroy, CA: Low-End 0", Expected 0", High-End 0.03". Chance of more than 0.01": 16%; 0.1": 3%; 0.25": 1%. All higher thresholds are 0%.King City, CA: Low-End 0", Expected 0", High-End 0". All probability thresholds are 0%.Livermore, CA: Low-End 0", Expected 0", High-End 0.06". Chance of more than 0.01": 22%; 0.1": 6%; 0.25": 2%. All higher thresholds are 0%.Monterey, CA: Low-End 0", Expected 0", High-End 0.01". Chance of more than 0.01": 12%; 0.1": 3%; 0.25": 1%. All higher thresholds are 0%.Napa, CA: Low-End 0", Expected Trace (T), High-End 0.3". Chance of more than 0.01": 72%; 0.1": 52%; 0.25": 30%; 0.5": 3%. All higher thresholds are 0%.Oakland, CA: Low-End 0", Expected 0", High-End 0.1". Chance of more than 0.01": 45%; 0.1": 19%; 0.25": 5%; 0.5": 1%. All higher thresholds are 0%.San Jose, CA: Low-End 0", Expected 0", High-End 0.07". Chance of more than 0.01": 23%; 0.1": 7%; 0.25": 3%. All higher thresholds are 0%.San Rafael, CA: Low-End 0", Expected 0.02", High-End 0.3". Chance of more than 0.01": 78%; 0.1": 49%; 0.25": 30%; 0.5": 2%. All higher thresholds are 0%.Santa Cruz, CA: Low-End 0", Expected 0", High-End 0.1". Chance of more than 0.01": 43%; 0.1": 19%; 0.25": 4%; 0.5": 1%. All higher thresholds are 0%.Santa Rosa, CA: Low-End 0", Expected 0.1", High-End 0.7". Chance of more than 0.01": 88%; 0.1": 76%; 0.25": 66%; 0.5": 51%; 1": 2%. All higher thresholds are 0%.San Francisco (SF), CA: Low-End 0", Expected 0", High-End 0.4". Chance of more than 0.01": 48%; 0.1": 34%; 0.25": 19%; 0.5": 6%. All higher thresholds are 0%. 1-in-10 chance of >=0.4” of rain or more in San Francisco thru 5pm Thursday
September 1, 2026 at 5:07 AM
robmayeda.bsky.social
8/31/2026: September will be starting off much cooler than average with drizzle and showers at times. We’re also tracking wildfire smoke and weekend rain chances to our south with a connection to the tropics (stay tuned on that)
August 31, 2026 at 10:01 PM
robmayeda.bsky.social
8/30/2026 Late day sun and low clouds over San Francisco in timelapse #clouds #BayArea #fog
August 31, 2026 at 2:01 AM
robmayeda.bsky.social
Plume activity on the #PlaskettFire Sunday afternoon 8/30/2026 Showing well on KMUX radar on the fire’s eastern side (likely scanning variable sizes of ash lofted above) #BigSur #California #wildfire
August 31, 2026 at 1:15 AM
Reposted by Rob Mayeda NBC Bay Area
edwardsanthonyb.bsky.social
A park service assessment of the Dragon Bravo burn scar last summer found that “debris flow risk is localized to steep, confined drainages, like Dragon Creek and upper Bright Angel Creek.”
August 30, 2026 at 8:37 PM
Reposted by Rob Mayeda NBC Bay Area
edwardsanthonyb.bsky.social
BREAKING: The National Park Service says more than 20 may be missing after a “significant flash flood” hit the Grand Canyon on Saturday.

“If you know of anyone who may have been hiking or backpacking in these areas, please contact the NPS Investigative Services Branch Tip Line: 888-653-0009,”
More than 20 may be missing after ‘significant flash flood’ at Grand Canyon
National Park officials closed down the Bright Angel Canyon area as they anticipated a chance of renewed flash flooding through Monday.
www.sfchronicle.com
August 30, 2026 at 8:29 PM
robmayeda.bsky.social
September sizzle will have to wait… plan on things feeling a bit more like Fall along with some rain chances for parts of Northern California approaching midweek. #BayArea #NorCal #SanFrancisco #SanJose #California
August 29, 2026 at 10:11 PM
robmayeda.bsky.social
High-based convection t-storms will bring an increasing fire danger concerns for new starts and convective wind gusts, sudden wind shift potential on existing fires near Big Sur. 8/27/2026
August 27, 2026 at 7:15 PM