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Elev 1306 ft, 34.11 °N, 117.53 °W

Rancho Cucamonga, CA Severe Weather Alertstar_ratehome

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Current Station
Personal Weather Station
Location: Rancho Cucamonga, CA
Elevation: 1306ft
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Active Weather Alerts

Flash Flood Warning
Issued: 5:10 PM Sep. 18, 2025 – National Weather Service
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL NOON PDT TODAY FOR
SAN BERNARDINO COUNTY...

At 1010 AM PDT, Doppler radar and local law enforcement reported
thunderstorms producing heavy rain across the warned area. Flash
flooding is ongoing or expected to begin shortly.

HAZARD...Life-threatening flash flooding. Thunderstorms producing
flash flooding.

SOURCE...Law enforcement reported water in the road at Amboy
Road.

IMPACT...Life-threatening flash flooding of low-water crossings,
creeks, normally dry washes and roads.

Some locations that will experience flash flooding include...
Old Dale and Wonder Valley.

This includes State Route 62 between  mile markers 44 and 56.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.

&&


FLASH FLOOD...OBSERVED;
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

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