Southwest Flood Watch: NWS Issues Alert for Desert Areas in California, Nevada, and Arizona
The National Weather Service (NWS) has issued a flood watch for desert areas in southern California, southern Nevada, and northwestern Arizona starting Wednesday due to heavy rain that could lead to flooding. The recent heavy rain follows the remnants of Tropical Storm Alvin, which brought moisture similar to the monsoon season to Arizona earlier than usual. The NWS predicts more tropical storms to follow a similar path, potentially bringing more heavy rain to the U.S. Southwest this summer.
The flood watch covers various areas in northwest Arizona, southeast California, and southern Nevada, including Lake Havasu, Fort Mohave, Lake Mead National Recreation Area, Las Vegas Valley, and more. The watch will be in effect until 11 p.m. local time, with a flash flood warning already issued for Northwest Arizona. The surge in moisture may also lead to dirt and debris on roads, and the Mojave National Preserve advises caution for desert tortoises emerging after rain.
More rain is expected in the evening, with possible thunderstorms producing moderate to heavy rainfall. NWS meteorologist Jenn Soulat noted the unusual moisture in Las Vegas during its dry season, attributing it to three storm systems, including Tropical Storm Alvin's remnants. While the flood watches may not continue through the week's end, Soulat warned of triple-digit heat returning soon.
The NWS warns of potential flooding in rivers, creeks, streams, and low-lying areas, as well as poor drainage and urban locations. The forecast indicates heavy showers and thunderstorms continuing through the night, with the possibility of flash flooding in burn scar locations, slot canyons, and dry washes. The Climate Prediction Center expects slightly above-normal precipitation in the region from June 10 to June 14, returning to normal levels in the following week.