Yosemite, Yosemite Valley and Mariposa-Madera Lower Sierra are under a weather alert for strong thunderstorms by the National Weather Service on Saturday at 4:10 p.m. The alert is in effect until 4:45 p.m.
The storms are predicted to bring pea-sized hail (0.25 inches).
“At 4:10 p.m., Doppler radar tracked a strong thunderstorm 8 miles southeast of Yosemite Valley, or 11 miles northeast of Yosemite South Entrance, moving southwest at 5 mph,” the NWS Hanford CA said. “Minor hail damage to vegetation is possible.”
Locations impacted by the alert include Bridalveil Creek Campground, Wawona, Badger Pass Ranger Station, Wawona Campground, Ostrander Lake and Wawona Vistor Center.
According to the NWS, “If outdoors, consider seeking shelter inside a building. Torrential rainfall is also occurring with this storm and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service.”
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. 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 a safe place to shelter, preferably indoors.Indoors safety measures:
Once you’re indoors, avoid using corded phones, electrical devices, plumbing fixtures, and stay away from 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. 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 without access to indoor shelter during a thunderstorm, take these steps to maximize your safety:
Avoid open fields, hilltops, or ridge crests, which 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, 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.
Mastering wet roads: Safety tips for heavy rainfall
When heavy rain strikes, safety is paramount. Equip yourself with these guidelines from the NWS to navigate wet roads and avoid hazards:
Beware of swollen waterways:
Avoid parking or walking in close proximity to culverts or drainage ditches, as the swiftly moving water during heavy rain can potentially carry you away.
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.
Reduce speed and drive cautiously:
On wet roads, reducing your speed is crucial. Ease off the accelerator gradually and avoid abrupt braking to prevent skidding.
Choose your lane wisely:
Stay toward the middle lanes – water tends to pool in the outside lanes.
Visibility matters:
Enhance your visibility in heavy rain by activating your headlights. Be particularly vigilant 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:
Overloaded wiper blades can hinder visibility. If rain severely impairs your vision, pull over and wait for conditions to improve. Seek refuge at rest areas or sheltered spots.
If the roadside is your only option, pull off as far as possible, preferably past the end of a guard rail, and wait until the storm passes. Keep your headlights on and turn on emergency flashers to alert other drivers of your position.
By following these safety measures, you can significantly reduce risks and ensure your well-being when heavy rain pours down. Stay informed about weather conditions and heed advice from local authorities to make your journey safe and sound.
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