Debris Flow in California, January 10, 2005

Name: Debris Flow in California, January 10, 2005
Start: 2005-01-10T18:25
End: 2005-01-10T18:25
Location: California

January 10, 2005 · NWS SGX · 1 event in 1 county or zone

Large boulders tumbled onto Ortego Highway.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: $3,000
Crop damage: None recorded
Events: 1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS SGX wrote it up.

Large boulders tumbled onto Ortego Highway.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS San Diego, CA wrote its last area forecast discussion before the first event at Jan 10, 9:30 AM PST, 8 hours 55 minutes earlier.

Area forecast discussion, Jan 10, 9:30 AM PST, 8 hours 55 minutes before

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Hazardous weather outlook, Jan 10, 3:00 PM PST, 3 hours 25 minutes before

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In the hours before

Local storm report, Jan 10, 3:29 PM PST, 2 hours 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
329 PM PST MON JAN 10 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0800 PM     FLASH FLOOD      PALM SPRINGS            33.83N 116.54W
01/09/2005                   RIVERSIDE          CA   BROADCAST MEDIA

            3 SWIFT WATER RESCUES IN THE COACHELLA VALLEY SUNDAY
            NIGHT.

1252 PM     FLOOD            SAN BERNARDINO          34.14N 117.29W
01/10/2005                   SAN BERNARDINO     CA   TRAINED SPOTTER

            STREET FLOODING

0130 PM     FLOOD            FULLERTON               33.88N 117.93W
01/10/2005                   ORANGE             CA   TRAINED SPOTTER

            STREET FLOODING.

0308 PM     FLOOD            LAKE ELSINORE           33.67N 117.32W
01/10/2005                   RIVERSIDE          CA   TRAINED SPOTTER

            STREET FLOODING ALONG COLLIER AVENUE WEST OF I-15. 8 TO
            12 INCHES OF WATER IS ON THE ROAD.

&&

BM

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

1 debris flow. Local standard time, as filed.

Debris Flow, Ne Orange

When: January 10, 6:25 PM PST
Where: Ne Orange forecast zone
Property damage: $3,000
Reported by: LAW ENFORCEMENT
Coordinates: 33.483, -116.847 (the zone’s center; the record gives no point)

What these are

Debris Flow: A fast-moving slurry of mud, rock and debris, usually on a slope soaked by heavy rain or stripped by a fire.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in California in 2005 Every state in 2005 This day in weather history Warnings in California, January 2005

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5436682.