A flash flood watch remained in effect Thursday in the San Gabriel Mountains and the Antelope Valley as "copious amounts of monsoonal moisture will continue to stream across Southern California" through the end of the day, the National Weather Service said.
A flash flood warning was also issued until 9:45 p.m.in central Merrimack County.
Friday, Aug. 4 - Mostly sunny, with a high near 98.
Thunderstorms and a Flash Flood Watch on Wednesday brought concern to the areas recently burned by the Alamo and Whittier fires. "We have moisture, the humidity is up and during the daytime with this heat...." Some thunderstorms may produce intense downpours which could lead to flash flooding.
In the area of Sharp Road and Spring Street, just west of Perris, debris flows created hazardous driving conditions, and a hard closure was put into effect on Sharp, between Spring and Theda streets, according to reports from the scene.
Monsoonal moisture will bring a chance of showers and thunderstorms to the area. PRECAUTIONARY/PREPAREDNESS ACTIONS. A Flash Flood Warning means that flooding will occur quickly, and could be life threatening for those who try to drive through flooded roads or underpasses.