Friday, Nov. 22—Periods of heavy rainfall and a slight chance of thunderstorms were expected in the region today.
The National Weather Service recorded approximately a half-inch of rainfall in Lake Cuyamaca, Julian, Pine Hills, San Onofre, Fallbrook Deer Springs and at the Palomar Observatory yesterday. In Ramona and elsewhere in the county, precipitation totals were a third of an inch or less.
With heavier rainfall expected today, flash flooding could be a concern, according to the weather service.
The agency scheduled a flash flood watch for the mountains and deserts from this afternoon to Saturday afternoon, saying a half-inch to an inch of heavy rainfall and rapid runoff was possible.
A flash flood watch means that conditions may develop that lead to flash flooding.
“Flash flooding is a very dangerous situation,’’ according to the NWS, which urged residents to watch for later forecasts and be prepared to take action should the watch being upgraded to a more-serious flash flood warning. A warning means the conditions are expected or already occurring.