The National Weather Service issued a weather alert at 4:21 p.m. on Monday for strong thunderstorms in effect until 4:45 p.m. for Yosemite. Seek a safe shelter inside a building or vehicle. The risk of lightning-related incidents escalates as thunderstorms draw near, reaching its peak when the storm directly looms overhead. Rainy roadways ahead: Essential safety tips for heavy rainWhen heavy rain strikes, safety is paramount. By following these safety measures, you can significantly reduce risks and ensure your well-being when heavy rain pours down.