Rob Mayeda NBC Bay Area

This is starting to look like your week … thanks trend warmer Tuesday and likely stay there Wednesday into the weekend. Wednesday, currently looking to be the warmest.

A case study of fire weather as severe weather on the #GiffordFire burning east of Santa Maria and north of Santa Barbara Sunday 8/3/2025. You can see the growth and development of the central column plume(s) which can lead to hazardous visibility / air quality and sudden wind shifts @nbcbayarea.com

August typically leads us into peak fire danger as live fuel moistures creep to their lowest level levels into early Fall. And although we’ve had one of the coolest starts to Sunmer in decade in the region, conditions are now shifting to seasonally dry for mid-Summer into Fall @nbcbayarea.com

And 30s around the Sierra and Tahoe for the first weekend in August 🥶Decent rebound in temps though with 70s-80s later today. #CAwx 8/3/2025

August? 40s in the North Bay to start the day, we'll see increasing wind esp. near the coast and inland hills (East Bay) into the afternoon. Mild temps to wrap up the weekend with some warming midweek. #CAwx 8/3/2025 @nbcbayarea.com

We should see temperatures climbing closer to Summer expectations by midweek, as high-pressure briefly builds into the region. @nbcbayarea.com 8/2/2025

August begins with below average temps, part of our remarkable run since the beginning of June. While inland areas typically see their hottest temps in July-August… it’s a different story near the coast where we wait for the return of north and offshore breezes leading to the warmest time of year.

A tsunami warning is in effect for portions of the North Coast to the Oregon border with a tsunami advisory active from the Bay Area south to Southern California. Anticipated wave heights have been reduced slightly near Crescent city but peak impacts still expected around coastal harbors and Inlets

Tsunami advisory update: revised peak wave heights slightly lower with the latest update as of 8pm, still highest for Crescent City, Port San Luis and less than 1 ft. around the Bay Area. Observed max tsunami heights have been low so far. #CAwx 7/29/2025

Also critically important - duration for potential unusual near shore currents / wave activity… (tsunami duration) Although the main event may pass, enhanced rip currents and unusual wave activity may persist hours later, be especially cautious in these zones. #CAwx 7/29/2025

Initial wave height estimates… highest near the Crescent City area known for amplified effects and Port San Luis, locally higher near harbors and inlets. Something to keep in mind around Santa Cruz Harbor as well although wave heights are expected to be lower closer to Monterey. #CAwx 7/29/2025

Updated estimated impact times for areas under a tsunami watch, California impacts would begin just before midnight for the NorCal coast and between 12am-1am for the Bay Area #CAwx 7/29/2025

Yes, 70s at best around the bay just closer to seasonal averages

True, there are studies that show that will lead to an increase in coastal wind…which is a heat check for coastal communities & helps promote upwelling, it works until ocean temperatures start trending warmer through time

Technically, a shorter yet extended pattern with no connection to Fall. How strongly the desert southwest high reasserts itself early next week - will determine if we see near average to slightly above average temperatures or go even hotter. Right now leaning with upper 80s and low 90s.

Confirmed: temps on the 📈and less coastal low clouds as well. 7/28/2025 #CAwx

Subtle but noteworthy when it comes to changes to temps. Sutro Tower cam starting to show up above the cloud layer with some marine air compression underway and warming aloft. Should translate to warmer temps inland to start the week. #CAwx 7/27/2025

Also, the most rain I think we’ve seen… for this time of year and what is typically one of the driest, remarkable all around. Natures, wildfire suppressant and air purifier.

About that… we could be talking about that very thing this time next weekend.

Through July 27th… parts of the Bay Area have seen their coolest start to Summer in more than 50 years (SFO, Oakland). If you’ve left your whole life in the Bay Area, perhaps your parents or grandparents may remember Summers like these 🌁 @NBC Bay Area #sanfrancisco #oakland #weather

We’re going to need stronger high-pressure than currently advertised or offshore wind… odds of that do go up September and October. But by July standards… Record drizzle days and chilly temps continue

From “Faux-Summer” to an almost average Summer when it comes to inland temps ahead? Some signs of warming are out there into the first week of August. Let’s take a look @NBC Bay Area #BayArea #weather #summerweather #California

Days of Thunder: NorCal #thunderstorms from satellite (strikes shown via global lightning mapper GLM) and via ground level Alert California cameras @nbcbayarea.com #California #storms #weather

Summer glow mode #CAwx 7/22/2025

It’s funny you say that… literally thinking the same thing, the weather system passing by is bringing similar Autumn mid-level cloud types as well. Reminds me of working in Seattle for a couple years at CBS ☺️ well everybody else had Summer It was usually still pretty cool/mild there.

Not your average July continues around the Bay Area with a supersized deck of low clouds, drizzle and inland temps setting record (low) high temps: Concord 72 (record 77 in 2002) Livermore 71 (record 78 in 2002). @NBC Bay Area #BayArea #BayAreaWeather #weather 7/22/2025

Cool July continues as in just 80 in Sacramento 😲 and 60s and 70s around our valleys. Ahead: watching for t-storms across the mtns to the north & Sierra with possible fire wx impacts ahead (wind + lightning & new start potential) #CAwx 7/22/2025

Danville drizzle day 2 #CoolJuly 7/22/2025 #CAwx @nbcbayarea.com

Temps are lower than average and humidity is getting a marine air boost esp bayside, however wind speeds are pretty strong , especially inland East Bay hills and Diablo Range leading to an elevated risk for fast moving grass fires in these regions through midweek. #CAwx 7/21/2025

Its easy to dismiss fire danger when temps are cool, marine air and yes around the coast and inner bay < 2,000 ft we're seeing higher RH%, cooler temps. However chances for isolated t-storms (red) will bring risk for new starts and strong wind potential to the north & east this week #CAwx 7/21/2025