Flash Flood Warning until 05:30PM Monday 
The National Weather Service in Phoenix has issued a
* Flash Flood Warning for... Riverside County in southern California... San Bernardino County in southern California...
* Until 530 PM PDT.
* At 125 PM PDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 0.5 and 1.5 inches of rain have fallen. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar. IMPACT...Life threatening flash flooding of normally dry washes, hiking trails, and Park roads.
* Some locations that will experience flash flooding include... Park Boulevard and Indian Cove in Joshua Tree National Park.
* AFFECTED AREAS: RIVERSIDE, CA ... SAN BERNARDINO, CA
Instructions:
Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Address/Location
City of Banning CA
99 E Ramsey St
Banning, CA 92220
Contact
Emergency: 9-1-1
Non-emergencies: 951-922-3100