National Weather Service radar shows shower activity at 9:54 a.m. Tuesday.
National Weather Service radar shows shower activity at 9:54 a.m. Tuesday.

Showers and thunderstorms are possible throughout San Diego County Tuesday as a weak easterly wave of high pressure moves through Southern California.

Light rain was falling at Lindberg Field shortly before 10 a.m., and the National Weather Service radar showed thunderstorms farther south in northern Baja California.

Mostly cloudy conditions with a 50 percent chance of showers and thunderstorms were forecast for the mountains. Forecasters predicted a 40 percent chance of measurable precipitation in the deserts and valleys, and a 30 percent chance along the coast.

A slight chance of rain throughout the county will carry over into Tuesday night.

“Abundant moisture flowing around an area of high pressure will bring increased clouds today with a good chance of showers and thunderstorms, especially for the mountains and deserts,” according to the weather service. “A few thunderstorms are possible over the mountains and deserts Wednesday afternoon as well.”

Forecasters said building high pressure would usher in warmer weather Thursday through Saturday that could potentially get close to breaking heat records.

— City News Service

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Chris Jennewein

Chris Jennewein is Editor & Publisher of Times of San Diego.