Flash Flood Warning for San Bernardino, CA
Official alert fields
What you need to know
- Applies to
- San Bernardino
- Effective
- Ends or expires
- Official severity
- Severe
- Official urgency
- Immediate
- Official certainty
- Likely
What is happening
At 817 PM PDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 1.5 inches of rain have fallen. Additional rainfall amounts up to 0.25 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash...
What the bulletin says to do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. 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.
Full official description
Bulletin details
At 817 PM PDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 1.5 inches of rain have fallen. Additional rainfall amounts up to 0.25 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. Some locations that will experience flash flooding include... Cima, Kelso and Mountain Pass. This includes Interstate 15 in California between mile markers 158 and 175.
Official geometry where available
Alert boundary
Lifecycle record
Official revisions
- Update
Flash Flood Warning issued August 11 at 8:17PM PDT until August 11 at 9:45PM PDT by NWS Las Vegas NV
Official revision - Alert
Flash Flood Warning issued August 11 at 6:46PM PDT until August 11 at 9:45PM PDT by NWS Las Vegas NV
Official revision
Source and limitations
Publisher: Weather Alert Watch. Primary source: NWS Las Vegas NV. This page reorganizes official fields and does not add a forecast or expand the affected area.
- CAP status
- Actual
- Message type
- Update
- Last collected