Valley News -

By Jeff Pack

National Weather Service issues thunderstorm warning


Last updated 8/15/2018 at 4:29pm

National Weather Service San Diego County

The National Weather Service in San Diego County issued a severe thunderstorm warning for Riverside County until 4 p.m. Wednesday. Evacuation orders were issued for Hurkey Creek, Apple Canyon, Fleming Ranch and Strawberry Creek and residents were instructed to use northbound Highway 243 to escape, by the County of Riverside Emergency Management Department.

The thunderstorm is located over Highway 74 between Mountain Center and Anza and has the possibility of 60 miles per hour gusts of winds, quarter-sized hail, and flooding.

Doppler radar indicated that the thunderstorms producing heavy rain across the warned area. The heaviest rain was over Garner Valley just east of Highway 74 and just outside the Cranston Fire burn scar. Flash flooding likely has begun in this area. Excessive rainfall over the Cranston Fire burn scar will likely result in debris flow that could consist of rock, mud, vegetation and other loose materials.

Thunderstorms with heavy rain were also occurring just east of Idyllwild, which includes the northeast part of the Cranston Fire burn scar. According to the NWS, locations that will experience likely flooding include Mt. San Jacinto State Park, Idyllwild-Pine Cove, Hwy 243 between Banning And Idyllwild, Anza, Hwy 74 between Mountain Center and Anza, Mountain Center, Aguanga, Lake Hemet and Cahuilla Indian Reservation.

The County of Riverside Emergency Management Department released a statement at 3:30 p.m. today that advised that the National Weather Service was expecting scattered heavy rain for the mountain areas through Friday. The flood warning for the Cranston Fire burn area will be in effect until 5:45 p.m. today.

"The Cranston fire left the ground on the mountaintop scorched with little ability to absorb water," the advisory said. "This means that scattered rain can result in more runoff than usual, leading to flooding, mud or debris flows – with little to no warning. There is also a threat of rockfall on steep, burned slopes."

The advisory urged residents located in and around the Cranston Fire burn area to take steps to protect themselves and their property. They said local fire stations have a limited supply of sandbags and urged everyone to have an emergency plan and disaster kit ready to go.

Residents can receive emergency alerts by signing up for Alert RivCo messages at


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