Rob Mayeda NBC Bay Area

Some offshore wind to start the week, mainly across the mountains, but the effects will be felt down to sea level with warm temperatures near the coast and inner bay. There is another chance for more rain later in the week, something to keep an eye on. 10/5/2025 @nbcbayarea.com

Fall fast forward: some soaking rains are starting the day, should see more activity moving to the east later. Chance for some stronger showers, isolated T-storms esp North Bay Mtns… and yes, that is high elevation Sierra snow at times into tomorrow. #CAwx 10/2/2025

As these things typically go this early in the season… top rain totals were in the North Bay, Mt Tam at 0.77” generally less than 0.10” elsewhere south. #CAwx 10/1/2025

Scientists May Have Finally Detected a Solid Inner Core on Mars - Eos Seismic clues from NASA’s InSight mission suggest that Mars hides a solid inner core, and raise new questions about why the planet’s magnetic field disappeared.

Seismic data from the #NASA #InSight mission reveal a solid inner core at the center of Mars.

Story by @javibar.bsky.social

eos.org/articles/sci...

Almost always … SFO issues are ceiling related, even if visibility or RVR is good. AWC 👀appears to be CIG. Not seeing anything crazy in the pilot reports, might possibly have a little bit of low level wind shear, as you noted with that change in wind direction.

Wednesday being best for rain still looking good esp. late morning to midday timeframe. Should get some clearing Thursday-Friday although may see showers over the inland mtns during the afternoon, eyes on what that low does into the weekend for both wind (north/offshore) & precip east. Stay tuned.

Smoke from a complex of fires in SW Oregon continues lingering in the Bay Area, although we should begin to see a reversal in that wind pattern with rain chances over the next couple of days that should help. @nbcbayarea.com #CAwx 9/28/2025

Well… about that northward shift. Monday’s weather system coming in weaker in terms of rain chances. Follow up system Tuesday night until Wednesday may have better totals but again mainly north of SF. We’ll see if this trend continues with the evening model runs tonight. #CAwx 9/28/2025

This visualization illustrates it a little bit better… should see better atmospheric mixing / air quality as the weather gets more active into Monday and through midweek. And hopefully quite a bit of rain on those fires to our north. #CAwx 9/27/2025

Smoky conditions around the Bay Area, but no fires nearby… So what’s going on? Smoke from fires to our north is moving south along the coast and into the Bay Area. South winds increase tomorrow which should help some ahead of Monday rain chances later #CAwx 9/27/2025

More clouds, breezy and cooler finish to the weekend ahead of the first storms of Fall next week (yes, a bit early) Although better rain totals likely stay north this really isn’t your typical September weather w/ daily rain averages mostly 0.01” or less. Stay tuned #CAwx 9/27/2025

Ensemble wx models still in agreement, trending w/ significant rain totals especially north. National blend of wx models sees the same with high elevation snow potential. We’ll have to see if things take more of a northward shift as we get closer. Stay tuned! #CAwx 9/26/2025

Yes, that was space junk spotted in our bay area skies this evening, video by Jamie Li spotted from San Mateo. As a general rule: meteors move much faster and usually end with a flash of light, space junk moves more slowly and can be easily followed across the sky. 9/25/2025 @nbcbayarea #spacejunk

We may have broken dry September.
Stay tuned next wk. #CAwx 9/25/2025

Strong thunderstorm prompting a special weather statement along the Diablo range / East Bay approaching midnight 9/24/2025 #CAwx

Vivid lightning display approaching 10pm near Danville 9/24/2025 @nwsbayarea @nbcbayarea.com #CAwx

9pm update: thunderstorms along the Diablo Range / East Bay, likely staying active into Thursday AM as well

4pm update: showers continue including isolated thunderstorms approaching the Diablo Range from the SE. Shower chances will linger into early Thursday before shifting East. 9/24/2025 #CAwx

Radar loop looks mostly aligned with the sharp range models bringing a chance of some rain at times and thunderstorms into the Bay Area tonight into Wednesday. 9/23/2025 #CAwx

Heat on the way tomorrow but into tomorrow evening and night we will be watching radar for rain chances and isolated thunder into Wednesday. Still appears the Central Coast will see more precip regionally. Stay tuned. #CAwx 9/22/2025

Updated shaking intensity map for the early morning 4.3 earthquake 3.1 miles from Piedmont 9/22/2025 #BayArea

Preliminary magnitude 4.6 earthquake at 2:56am near Berkeley to start the morning 9/22/2025

Fall begins… but weird September weather reigns. Dry offshore wind across the inland mountains into Monday. Temps will jump back into the 90s inland and 70s and 80s bayside. Then (weird) an upper level low brings a chance of showers and isolated thunder midweek. Stay tuned. 9/20/2025 @nbcbayarea

From Caltrans District 8 on Facebook and CHP reports:

Highway 38 to Big Bear "completely washed out" from mudslides according to CHP on QuickMaps.
"Closed in both directions from Valley of the Falls to the bottom of South Fork," Caltrans said on Facebook

Photo credit: Caltrans

Morning view on lightning detection / satellite shows activity near the Central Coast. Should have chances in increasing regionwide later today and into Friday 9/17/2025 #CAwx

Morning view on lightning detection / satellite shows activity near the Central Coast. Should have chances in increasing regionwide later today and into Friday 9/17/2025 #CAwx

And the 0z evening model runs shifting west again later Thursday, with some lightning potential. Would not be surprised if we see some of this a little earlier into Wed night. Stay tuned 9/16/2025 #CAwx

And the 0z evening model runs shifting west again later Thursday, with some lightning potential. Would not be surprised if we see some of this a little earlier into Wed night. Stay tuned 9/16/2025 #CAwx

Wow! Crazy to think we were still on Beta SP tape back then and then Mini DV digital tape - you’ll have to Google it. It’s old. 😂 tell him I said hello!

Might’ve been nice before the Dodgers series… but the late playoff push was very unexpected. They may still have time.