UPDATE 3:45 P.M. Garner Valley Apple Canyon

At 2:27 p.m., the National Weather Service issued a flash flood warning until 5 p.m. for central Riverside County......

National Weather Service doppler radar continues to indicate heavy rain capable of producing flash flooding over the warned area. Locations within the warning include the Mountain Fire burn area as well as portions of Highway 74.

Watersheds burned in 2013 within the Mountain Fire burn area are particularly susceptible to flash floods and debris flows from this rainstorm.

dwellings...roads...trails...and campgrounds located along drainages within or below the burned basins can be impacted by flash floods and debris flows. this includes infrastructure in low lying areas of Taqhuitz Creek, Andreas Canyon, Murray Canyon, West Fork Palm Canyon, Fobes Canyon, Apple Canyon, Herkey Creek and Coldwater Creek.

In addition, roads that may be affected include those in the vicinity of South Palm Canyon drive, Highway 74, or Pines to Palms Hwy between Mountain Center and Morris Ranch Road, Fobes Ranch road, Apple Canyon Road, Bonita Vista Road, and Forest Service roads 5521 and 5505.

POSTED NOON, Sept. 4 The National Weather Service has issued a flood watch for the inland Empire... Riverside County mountains...in effect through 10 pm tonight...

Another surge of very moist and unstable air has moved rapidly across Sonora Mexico and southeast California this morning. The leading edge has already reached the lower deserts and mountains of eastern San Diego and western Riverside County.

From now through 10 pm tonight, there is a high likelihood of thunderstorms with heavy rain over eastern San Diego county...western Riverside County...and southwest san bernardino county. Recently burned areas and those locations down stream are especially prone to debris flows and rapid flash flooding with just moderate amounts of rain

* flash flood watch for a portion of southwest california... including the following areas...apple and lucerne valleys... coachella valley...riverside county mountains...san bernardino county mountains...san bernardino and Riverside county valleys- the inland empire...san diego county deserts...san diego county mountains and santa ana mountains and foothills.

* until 10 pm pdt this evening

* heavy rainfall rates and rapid runoff...especially over and down stream of recently burned areas.

* for recent burn areas...in addition to flash flooding...even light to moderate rainfall can produce debris flows.

* recent fire scars in riverside county include the Falls...Mountain...and Hathaway fires of 2013...and the Buck fire of 2012.

A flash flood watch means that conditions may develop that lead to flash flooding. flash flooding is a very dangerous situation. you should monitor later forecasts and be prepared to take action should flash flood warnings be issued.