SAN DIEGO (CNS) - Monsoonal moisture and daytime heating will bring scattered thunderstorms to most parts of San Diego County Monday, posing a threat of flash flooding, forecasters said.
A flash flood watch will be in effect through 4:15 p.m. for central San Diego County, according to the National Weather Service. Affected areas include, but are not limited to Pauma Valley and Lake Henshaw. Rain gauges from the area recorded at least 1.5 inches in a one-hour period.
"A flash flood watch means that conditions may develop that lead to flash flooding," the NWS advised. "Flash flooding is a very dangerous situation."
Recently burned areas can be especially susceptible to flash flooding.
Motorists are warned to avoid areas where water covers the roadway, as they can be too deep to cross.
The Weather Service forecast highs Monday in the mid 70s near the coast, low 80s inland, mid 80s in the valleys, low 70s to low 80s in the mountains, and mid 90s in the deserts.