Santa Ana Mountains/Foothills, Orange County and San Bernardino and Riverside County Valleys are the focus of an updated weather alert for strong thunderstorms issued at 1:18 a.m. on Tuesday by the National Weather Service. The alert is in effect until 2 a.m.
The storms may bring pea-sized hail (0.25 inches) and wind gusts of up to 50 mph.
“At 1:17 a.m., Doppler radar tracked a strong thunderstorm near Temescal Valley, moving east at 30 mph,” says the NWS San Diego CA. “Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible.”
Locations impacted by the alert include Riverside, Irvine, southern Corona, Orange, Mission Viejo, Tustin, Lake Elsinore, Murrieta, Perris, Rancho Santa Margarita, Trabuco Canyon, Woodcrest, Silverado, El Toro, Las Flores, Foothill Ranch, Menifee, Sun City, Ortega Highway and Temescal Valley.
According to the NWS, “If outdoors, consider seeking shelter inside a building.”

Staying safe as lightning approaches: Expert 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 crucial to have a lightning safety plan in place.
Monitor the sky for threatening signs and listen for the sound of thunder. If thunder is audible, it’s an indication that lightning is nearby.
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.
Lightning can follow conductive pathways, and these precautions reduce the risk of electrical surges.
Wait for the all-clear:
After the last lightning strike or thunderclap, wait at least 30 minutes before resuming outdoor activities.
It’s important to remember that lightning can strike even when a storm seems to have passed, so exercise caution.
When indoor shelter isn’t available:
If you find yourself outdoors with no 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 in a group, ensure that individuals are spaced out to prevent lightning current from transferring between people.
Camping in an open setting during a thunderstorm is strongly discouraged. If you have no alternative, set up camp in a valley, ravine, or other low-lying areas. It’s crucial to note that a tent provides no protection against lightning.
Do not approach water bodies, wet objects, or metal items. While water and metal don’t attract lightning, they conduct electricity effectively and can pose significant risks.
In summary, when facing the threat of lightning, preparedness and vigilance are your best allies. By following these guidelines, you can significantly reduce the likelihood of lightning-related incidents and prioritize your safety.
Rainy roadways ahead: Essential safety tips for heavy rain
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:
In heavy rain, refrain from parking or walking near culverts or drainage ditches, where swift-moving water can pose a grave danger.
Maintain safe driving distances:
Adhere to the two-second rule for maintaining a safe following distance behind the vehicle in front of you. In heavy rain, allow an additional two seconds of distance to compensate for reduced traction and braking effectiveness.
Reduce speed and drive cautiously:
On wet roads, slowing down is paramount. Gradually ease off the accelerator and avoid abrupt braking to prevent skidding.
Choose your lane wisely:
Stay toward the middle lanes – water tends to pool in the outside lanes.
Prioritize visibility
Turn on your headlights and be careful of other vehicles to the rear and in blind spot areas as they are especially difficult to see through rain-spattered windows.
Watch out for slippery roads:
The first half-hour of rain is when roads are slickest due to a mix of rain, grime, and oil. Exercise heightened caution during this period.
Keep a safe distance from large vehicles:
Don’t follow large trucks or buses too closely. The spray created by their large tires reduces your vision. Take care when passing them as well; if you must pass, do so 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