This blog post takes a recent severe thunderstorm warning from Tehama County and turns it into practical advice for hiking-biking-outdoor-activities/marin-county-parks/south-marin/tiburon-ridge-preserve/”>Marin County folks. With hail reports and the threat of dangerous lightning, let’s break down what this means for everyone from San Rafael and Novato to Mill Valley, Sausalito, and Tiburon—and look at some real steps to stay safe in Marin’s weather.
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What the latest storm warning means for Marin County
The National Weather Service in Sacramento issued a severe thunderstorm warning at 4:57 p.m. for Tehama County, effective until 5:15 p.m. The storm tracked northeast, but meteorologists say these cells can slide right into the North Bay, dropping hail, lightning, heavy rain, and gusty winds on Marin towns like San Anselmo, Fairfax, Corte Madera, and Larkspur.
The storm was about 7 miles north of Corning, moving slowly but packing hail up to the size of quarters. Even if Tehama was the focus, Marin families know storms can cross into the Bay Area with hardly any notice.
Experts say the U.S. gets around 25 million lightning strikes a year. About 20 people die from lightning annually, and the biggest danger is when the storm is right overhead.
Safety basics when thunder roars
Thunder means it’s time to head for shelter—don’t wait for wind or hail to hit. In Marin County, plan ahead so you can get indoors the moment you hear thunder.
- Have a plan to reach shelter quickly. Know which doorway or room in your San Rafael, Novato, or Mill Valley home is safest.
- Seek indoor refuge at the first sound of thunder. Move away from windows and doors in Sausalito or Tiburon, and head for a sturdy interior space on the lowest floor.
- Avoid corded phones, electrical equipment, plumbing, windows, and doors. If you’re inside a Marin home or business, skip the landline and unplug what you can during the storm.
- If indoor shelter isn’t an option, avoid open fields, hilltops, solitary tall trees, water, wet items, and metal objects. Campers or hikers near Point Reyes or Tomales Bay should stick to low ground, not exposed spots.
- Spread out in groups outdoors to reduce current transfer. In forests around Mount Tamalpais, stay near shorter tree clusters instead of standing alone like a lightning rod.
Driving safety on Marin County roads during storms
Storms make driving tricky all over Marin, from U.S. 101 near San Rafael to Highway 1 out to Stinson Beach or Bolinas. Hydroplaning happens when tires skim over water, and you can lose control fast—especially if you’re speeding, your tire tread is worn, or the water’s deep.
- Turn on headlights and pick safer lanes. When visibility drops, use your headlights and stick to middle lanes where water pools less in Marin’s hilly areas.
- Avoid puddles and flooded spots. Don’t try to drive through flooded underpasses or big puddles along the 101 through Corte Madera, or when walking along the Tamalpais corridor.
- Keep distance from big vehicles and skip risky passing. Large trucks on the 101 or local roads can throw up water and make hydroplaning more likely.
- Turn around, don’t drown. If you see a flooded road, just find a safer way around instead of crossing.
- SLOW down and brake gently. If you hydroplane, ease off the gas, steer gently into the skid, and don’t slam the brakes.
Lightning, hail, and shelter strategies for Marin households
This storm could bring quarter-sized hail and big lightning, so it’s worth having a plan whether you’re in Marin City, out in the country, or on Tiburon’s waterfront. Lightning strikes the U.S. millions of times a year, and even a mild-looking storm can be deadly if it’s right over you.
Indoor shelter and outdoor precautions
- Inside safety first. Head for an interior room, avoid windows, and don’t use corded phones or electrical gear.
- In forests or by the coast, pick your shelter carefully. If you’re out hiking or camping in Marin’s parks, steer clear of lone tall trees and move to low, dense cover if you can.
- Protect water and metal objects outdoors. Bring in outdoor gear and stay away from exposed metal during the storm.
Outdoors in Marin: spacing and staying alert
- Space out groups to reduce current transfer. Whether you’re at a park in Mill Valley or hanging out at Stinson Beach, try to leave some distance between people.
- Stick to shorter tree groupings when you have to be outdoors. If you need to stop along a trail near Mount Tamalpais, it’s better not to stand under a single, super-tall tree.
Stay informed and prepared
When storms hit Marin County, check National Weather Service updates and pay attention to local alerts from places like Mill Valley and San Rafael. It helps to keep your phone charged, know your family’s evacuation plan, and take a quick look at your gutters and drainage—especially if you’re in neighborhoods from Corte Madera to Fairfax.
Honestly, just a little bit of prep can make a wild Marin County storm feel a whole lot more manageable.
Here is the source article for this story: UPDATE: Quarter-sized hail predicted with thunderstorms to hit Butte and Tehama counties Sunday
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