Surprise thundershowers dropped in on the Southland on Tuesday afternoon, bringing lightning and some brisk, if short-lived, rains.
The heaviest showers were over the Southern California mountains and deserts and in the San Gabriel Valley as a moist, unstable air mass dallied aloft.
"We weren't expecting any of this," said Cary Schudy of the Earth Environment Service in San Francisco. Nor, he added, did he expect anymore of it for the time being.
Lightning struck a transformer in the 1500 block of Rubio Drive in San Marino, Southern California Edison Co. spokesman Bob Krauch said, leaving about 1,500 customers briefly powerless.
In downtown Los Angeles, a mere 0.01 of an inch of rain was measured by the National Weather Service. There was a trace at Los Angeles International Airport, 0.01 at Pasadena, 0.04 at Riverside, 0.09 at Big Bear Lake and 0.27 at Beaumont.
Showers were reported in the Antelope Valley, the western Mojave Desert, over the San Bernardino and San Gabriel mountains and south into Orange and San Diego counties. Rainfall figures for Orange County were not yet available from the weather service.
Today through Thursday should be mostly clear, with high temperatures in the high 60s and low 70s, and gusty, northerly winds of 20 to 30 m.p.h., the National Weather Service said. Low temperatures Wednesday night are expected to range from the mid-40s to lower 50s. Tuesday's high in Santa Ana reached 67.