San Francisco Bay Area Skywarn

Although Skywarn Recognition Day (SRD) has been officially cancelled for 2025, this Saturday, December 6 from 0000-2359 UTC (4pm PST Friday Dec 5 through 3:59pm PST Saturday Dec 6), WX6MTR will be on the air participating in SRD in an unofficial capacity. sfoskywarn.org/2025/12/05/s...

🌫️Dense Fog Advisory for the East Bay interior valleys through 11 AM due to visibilities of 1/4 miles or less in patchy dense fog making driving hazardous. If driving, slow down, use your low beam headlights, and leave plenty of distance ah... https://x.com/NWSBayArea/status/1996961743659036677

Patchy dense fog is being reported in the inland valleys, including Santa Rosa and Hollister. Drivers: if you encounter dense fog, slow down, use low beam headlights, and keep extra space between you and the car in front! #CAwx https://x.com/NWSBayArea/status/1994380168698413487

Unfortunately we have had a couple of incidents where people have been swept out to sea by hazardous surf conditions, including sneaker waves and rip currents, and died as a result. If your weekend plans involve a trip to the beach, NEVER turn y... https://x.com/NWSBayArea/status/1994375948721160303

⚠️🌊Heads up! A Beach Hazards Statement is in effect now through 10 PM Sunday along the Pacific coast. There will be an increased risk for sneaker waves and rip currents with breaking waves between 13 to 18 feet expected. Never turn your b... https://x.com/NWSBayArea/status/1994369639036408219

This was fun to write! But also one of the more complex topics that I’ve covered!

California’s rule book on El Niño and La Niña is broken La Niña is back, but week-to-week jet-stream chaos really decide whether California floods or stays dry.

I've been trying to write this story for months. I've had a sneaking suspicion that the public perception of what El Nino and La Nina means for weather outcomes is not aligned with the truth.
www.sfchronicle.com/weather/arti...

3:15PM 11/20/25 Radar Update: Showers slowly slide through and taper off this afternoon. Here's a nice shot of some rain showers from @ALERTCalifornia via the West Gonzalez camera. For those looking to dry out for a bit, fret not that arrives to... https://x.com/NWSBayArea/status/1991647964360831441

⚠️Heads up! A Beach Hazards Statement will go into effect at 4 PM Thursday and continue through Monday night. There will be an increased risk for sneaker waves and rip currents with breaking waves between 13 to 18 feet expected. Never turn y... https://x.com/NWSBayArea/status/1991117789810090278

🌧️More rain on the way. Here's the latest rainfall totals with next storm. While there still is some uncertainty with the exact track of the storm boom and bust rainfall scenarios don't vary that much. Heaviest rain will be Wed PM-> Thu AM ... https://x.com/NWSBayArea/status/1991118757100392497

We're getting a better look at the main rain band as it approaches the coast this morning. The latest Mesoscale Precipitation Discussion from the @NWSWPC states, "Flash flooding is expected on at least an isolated basis" https://www.wpc.ncep.noa... https://x.com/NWSBayArea/status/1988912993598386242

The main band of rain has reached the North Bay as of 2:45 AM. Steady rain will continue here until 10 AM or so #CAwx https://x.com/NWSBayArea/status/1988923459695423706

Rain returns midweek! 🌧️ Probabilities are increasing for 2"+ of rain Wed–Fri, highest in the North Bay, Santa Cruz Mountains, & Big Sur coast (60–90%), lower across the South Bay & interior valleys (10–30%). #CAwx #BayAreaWX https://x.com/NWSBayArea/status/1987568636882518119

☀️➡️🌧️Today is a warm and sunny day... the perfect time to begin preparing for a rainy midweek period! Latest forecast shows most intense rain expected late Wednesday into Thursday. Clean out gutters and storm drains to prevent road... https://x.com/NWSBayArea/status/1987463883494179152

Higher than normal tides are expected this week thanks to a Supermoon taking place on November 5th. The Supermoon brings the highest (and lowest) tides of all and can result in coastal flooding. A Coastal Flood Advisory remains in effect now thr... https://x.com/NWSBayArea/status/1985811175414677525

It's going to be a wet commute this morning. Allow extra patience, space, and time when driving this morning and remember to turn on your headlights! #CAwx https://x.com/NWSBayArea/status/1985986936842919942

The NOAA Weather Radio Weekly Test has been cancelled today due to impactful weather. Visit http://weather.gov/nwr for more information. Next week's test will occur on Wednesday, November 12th, 2025 between 11 AM and 12 PM. #CAwx https://x.com/NWSBayArea/status/1986011309469548872

⚠️🍃Wind Advisory issued for most of the Bay Area and Santa Cruz Mountains Tuesday night through Wednesday due to gusts 35-45 mph. Unsecured objects will blow away, downed tree limbs will cause isolated power outages, and high profile vehi... https://x.com/NWSBayArea/status/1985522269741879799

🌧️❓Heavy rain may be on the way! 🌧️ The highest chance for over 1 inch of rain in 72 hours is in the North Bay and Santa Cruz Mountains (up to 55%). Rain starts late Monday night with the greatest impacts expected Wednesday across th... https://x.com/NWSBayArea/status/1984305851838935499

Light to moderate 🌧️continues to move across the North Bay! The heaviest rain (up to 0.50" in the past 12 hours) is over the Coastal Ranges in Sonoma County. Lesser amounts in the valleys. Front moves south this afternoon, but little/no rai... https://x.com/NWSBayArea/status/1982110926510637321

⚠️Dense fog across the North Bay valleys this morning. Take it slow! https://x.com/NWSBayArea/status/1981658959090991537

🌧️ Rain returns late Friday night, with the heaviest totals on Saturday. The North Bay could see up to an inch, with lighter amounts farther south. #CAwx #BayAreaWX https://x.com/NWSBayArea/status/1981392173539999835

🌧️Next chance for rainfall arrives Friday into the weekend with a low pressure system moving into the West Coast. Generally beneficial rainfall is likely with the greatest impacts across the North Bay. Forecast is low to moderate confidence... https://x.com/NWSBayArea/status/1980223002810683471

Southern California sunrise from Ventura. 10/20/2025

California rainfall: Track how much precipitation has fallen across the state and Bay Area Charts show precipitation data in California for San Francisco, Los Angeles, San Diego and other cities.

www.sfchronicle.com/projects/202...

California rain totals: Map shows which areas got most drenched An early-season storm brought heavy rain to California, including the San Francisco Bay Area and Los Angeles. Use our map to see the biggest rainfall totals across the state.

California rain totals: Map shows which areas got most drenched www.sfchronicle.com/weather/arti...

An atmospheric river event favors increased chances of stormy weather over the Western U.S. during late October.

10/15/25 9:20am Update:
It's official! Our first measurable snowfall happened. We had 7.3" (18.5 cm) of #snow accumulation at our measurement this morning.

It looks like we're done with snow for at least the next 10 days but we'll be watching the forecast excitedly.

#CAwx #CAwater

Isolated rain shower activity will continue to wane through the morning. The clearing skies and recent rainfall will have sensible weather feeling cold. Grab an extra layer before heading out the door this morning and prepare for another cold ni... https://x.com/NWSBayArea/status/1978386635340353647

📡Radar Update[5:20 AM] - Good morning early risers. We had a brief break in shower activity overnight, but we're not done yet. Still expecting additional shower activity through the day. Isolated tstorms may pop up over the Central Coast too.... https://x.com/NWSBayArea/status/1978074899680784478