Orange, Riverside and San Bernardino counties were placed under a severe thunderstorm warning by the National Weather Service on Wednesday at 1:26 a.m. The warning is in effect until 2:30 a.m.
Residents should be prepared for wind gusts of up to 60 mph.
“At 1:24 a.m., a band of severe thunderstorms was located near the the Los Angeles Orange County line moving slowly southeast. It will move through northern Orange County and the northwest Inland Empire through 2:30 a.m.,” according to the NWS San Diego CA. “Expect damage to roofs, siding, and trees.”
Locations impacted by the warning include Anaheim, Santa Ana, Riverside, Irvine, Fontana, Moreno Valley, Huntington Beach, Garden Grove, Ontario, Corona, Orange, Fullerton, Costa Mesa, Rialto, Mission Viejo, Chino, Tustin, Yorba Linda, Stanton and Seal Beach.
The NWS said, “For your protection move to an interior room on the lowest floor of a building.”

Road closures
Updates on road closures can be found on CalTrans’ website or mobile app or by calling 800-427-7623.
Emergency alerts in Southern California
For “considerable or catastrophic” hazards, emergency alerts will be sent to all enabled mobile phones in the area. To monitor lesser risk, residents are advised to sign up for county alert systems and to monitor agencies’ social media. How to sign up for alerts in your area:
Where to get sandbags
If you’re in an area at risk of flooding, sandbags can be one line of defense. County fire departments typically offer a limited supply of free sandbags for residents of their nearby communities. You should bring your own shovel to fill your bags, and be prepared to show proof of residency.
Sand and sandbags can also be purchased at many home improvement and hardware stores.
Here are links of locations that might have sandbags in your area:
Los Angeles County https://dpw. Lacounty. Gov/dsg/sandbags/
Orange County https://ocfa. Org/AboutUs/Departments/OperationsDirectory/Sandbags. Aspx
San Bernardino County https://sbcfire. Org/sandbags/
Riverside County https://rvcfire. Org/resources/fire-stations
How to fill a sandbag
Not sure how to fill your sandbags? Watch the how-to video, provided by the City of Seal Beach.
Preparing for approaching lightning: Expert safety advice
Lightning strikes the United States approximately 25 million times each year, mostly during the summer. Lightning claims the lives of about 20 people annually, according to the NWS. The risk of lightning-related incidents escalates as thunderstorms draw near, reaching its peak when the storm directly looms overhead. However, it gradually recedes as the tempest moves
To ensure your safety during a thunderstorm, keep these recommendations in mind:
Lightning safety plan:
When venturing outdoors, it’s vital to establish a clear plan for seeking shelter in case of lightning.
Stay vigilant by monitoring the sky for ominous signs and listening for the telltale sound of thunder. If thunder is audible, it’s a clear indication of nearby lightning.
Seek shelter promptly in a safe location, preferably indoors.
Indoors safety measures:
Once you’ve found shelter indoors, abstain from using corded phones, electrical appliances, or plumbing fixtures, and refrain from approaching windows and doors.
These precautions help reduce the risk of electrical surges, as lightning can follow conductive pathways.
Wait for the all-clear:
After the last lightning strike or thunderclap, wait at least 30 minutes before resuming outdoor activities.
Lightning can strike even when a storm has seemingly passed, so exercise caution.
When indoor shelter isn’t available:
If you find yourself outdoors without access to indoor shelter during a thunderstorm, take these steps to maximize your safety:
Avoid open fields, hilltops, or ridge crests, as they expose you to greater lightning risk.
Steer clear of tall, isolated trees and other prominent objects. In wooded areas, stay close to lower stands of trees.
If you’re with a group, ensure individuals are spread out to prevent lightning current from transferring between people.
Camping in an open setting during a thunderstorm is strongly discouraged. If no alternative exists, set up camp in a valley, ravine, or other low-lying areas. Remember that a tent offers no protection against lightning.
Do not approach water bodies, wet objects, or metal items. Although water and metal do not attract lightning, they conduct electricity effectively and can pose significant risks.
In summary, when facing the threat of lightning, vigilance and preparedness are your best allies. By following these guidelines, you can significantly reduce the chances of lightning-related accidents and prioritize your safety.
Driving through downpours: Safety guidelines for wet roads
When heavy rain sets in, the risk of flooding and hazardous driving conditions rises. Whether it’s prolonged rainfall or rapid runoff, being prepared is essential. Here are some valuable safety tips from the NWS to ensure you stay safe in heavy rain:
Beware of rapid water flow:
During heavy rain, avoid parking or walking near culverts or drainage ditches, where swift-moving water can pose a serious risk.
Maintain safe driving distances:
The two-second rule for following distance is your ally in heavy rain. Extend it to four seconds to ensure safe spacing in adverse conditions.
Slow down and stay cautious:
On wet roads, reducing your speed is crucial. Ease off the accelerator gradually and avoid abrupt braking to prevent skidding.
Choose your lane wisely:
Stick to the middle lanes on multi-lane roads to minimize the risk of hydroplaning, as water tends to accumulate in outer lanes.
Visibility matters:
Enhance your visibility in heavy rain by turning on your headlights. Watch out for vehicles in blind spots, as rain-smeared windows can obscure them.
Watch out for slippery roads:
The initial half-hour of rain is when roads are slickest due to a mixture of rain, grime, and oil. Exercise heightened caution during this period.
Keep a safe distance from large vehicles:
Large trucks and buses can reduce your visibility with tire spray. Avoid tailgating and pass with caution.
Mind your windshield wipers:
Heavy rain can overload the wiper blades. When visibility is so limited that the edges of the road or other vehicles cannot be seen at a safe distance, it is time to pull over and wait for the rain to ease up. It is best to stop at rest areas or other protected areas.
When stopping by the roadside is your only option, position your vehicle as far off the road as possible, ideally beyond guardrails. Keep your headlights on and activate emergency flashers to alert other drivers of your position.
In the face of heavy rain, these precautions can make a significant difference in ensuring your safety on the road. Remember to stay informed about weather conditions and heed guidance from local authorities for a secure journey.
For more local weather alerts, visit our Weather Advisory page