San Francisco Bay Area Skywarn

San Francisco Bay Area Skywarn

@sfoskywarn.bsky.social

San Francisco Bay Area Skywarn is a group of trained weather spotter volunteers. Our website is sfoskywarn.org.

39 Followers 42 Following 19 Posts Joined Jan 2025
2 months ago

(2/2) Gutters should be cleaned out and loose outdoor items secured by Thursday. Impactful weather in the form of rain, wind, and even a slight chance for thunderstorms returns Sunday. Rainy and windy conditions are expected to continue into nex... https://x.com/NWSBayArea/status/2001262720935682240

9 2 0 0
2 months ago

(1/2) Good early Wednesday morning! Light rain showers will move into the area from the north this morning, becoming isolated to scattered this afternoon. More light rain showers are expected tomorrow ahead of widespread beneficial rainfall Frid... https://x.com/NWSBayArea/status/2001262718540742843

10 3 0 0
3 months ago
Post image

🚨Attention drivers and mariners! 🚨 Dense fog is being reported across the region. Follow the safety precautions in the images if you are unable to delay travel. #CAwx https://x.com/NWSBayArea/status/1999822300560883724

2 1 0 0
3 months ago
Post image

A Dense Fog Advisory is in effect for the North Bay Interior Valleys, East Bay Interior Valleys through 11AM Saturday. Expect visibility less than 1/4 mile at times. https://x.com/NWSBayArea/status/1999698654014115992

10 4 0 0
3 months ago
Post image

🌧️A pattern change is expected through the weekend with chances for light rain across the middle of next week, followed by possible heavy rain for the following weekend! Our colleagues at the @NWSCPC have more info. Keep track of forecast u... https://x.com/NWSBayArea/status/1999606112065085684

3 1 0 0
3 months ago
Skywarn Recognition Day — WX6MTR will be on the air – 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...

0 0 0 0
3 months ago
Post image

🌫️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

4 1 0 0
3 months ago
Post image

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

1 1 0 0
3 months ago
Post image

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

2 1 0 0
3 months ago
Post image

⚠️🌊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

2 1 0 0
3 months ago

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

9 4 0 0
3 months ago
Preview
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...

44 9 3 0
3 months ago
Post image

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

4 1 0 0
3 months ago
Post image

⚠️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

1 1 0 0
3 months ago
Post image

🌧️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

2 1 0 0
4 months ago
Post image

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

3 1 0 0
4 months ago
Post image

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

2 1 0 0
4 months ago
Post image

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

7 1 0 0
4 months ago
Post image

☀️➡️🌧️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

2 1 0 0
4 months ago
Post image

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

3 2 0 1
4 months ago
Post image

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

4 1 0 0
4 months ago
Post image

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

2 2 0 0
4 months ago
Post image

⚠️🍃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

6 2 0 0
4 months ago
Post image

🌧️❓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

4 1 0 0
4 months ago
Post image

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

4 1 0 0
4 months ago
Post image

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

3 1 0 0
4 months ago
Post image

🌧️ 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

4 3 0 0
4 months ago
Post image

🌧️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

3 1 0 0
4 months ago
Post image

Southern California sunrise from Ventura. 10/20/2025

9 2 0 0
4 months ago
Preview
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...

6 1 0 0