California, 2025

Tsunami in California, July 30, 2025

July 30, 2025 · NWS SGX · 1 event in 1 county or zone

A tsunami, which was created by an earthquake which occurred off the coast of Russia, impacted several locations along the beachline of Southern California, including the damage to an older vessel in Dana Point.

Where it happened

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
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.

A tsunami, which was created by an earthquake which occurred off the coast of Russia, impacted several locations along the beachline of Southern California, including the damage to an older vessel in Dana Point.

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 Jul 30, 12:24 PM PST, 4 hours 21 minutes earlier.

Area forecast discussion, Jul 30, 12:24 PM PST, 4 hours 21 minutes before
Area Forecast Discussion
National Weather Service San Diego CA
124 PM PDT Wed Jul 30 2025

.SYNOPSIS...
Conditions will continue to warm into the weekend, bringing
temperatures to near seasonal normals. Temperatures west of the
mountains will continue to be near average into early next week,
with highs in the low desert up to 5 degrees above average. Low
clouds and fog will spread into portions of the western valleys each
night.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

Minimal changes in high temperatures expected into the weekend,
keeping conditions near or slightly above the seasonal average.
Chances of the Inland Empire reaching or exceeding 100 degrees is 25
to 50 percent on Saturday, and 40 to 60 percent chance on Sunday.
Chances of the low desert reaching or exceeding 110 degrees are 75
to 95 percent over the weekend. The marine layer will fluctuate
between 1500 and 2000 feet in depth with areas of night and morning
coastal low clouds spreading into portions of the western valleys
late each night through the forecast period.

A few degrees of cooling is expected for Monday and Tuesday of next
week. Some locations west of the mountains will be up to 5 degrees
below average early next week. Highs on Tuesday will range from the
low to mid 70s near the coast to the upper 80s to mid 90s for the
Inland Empire with 105 to 110 for the lower deserts. Wednesday will
be a few degrees warmer than Tuesday.

&&

.AVIATION...
302030Z....Coasts/Western Valleys...Low clouds and fog with bases
700-1000 feet MSL, tops to 1600 feet and vis 1-5SM on higher coastal
terrain will redevelop and spread ashore after 05Z and locally
inland gradually overnight, achieving similar coverage as this
morning. Scatter out Thursday around 16-17Z.

.Inland Valleys/Mountains/Deserts...Mostly clear with VFR conditions
through Thursday.

&&

.MARINE...
No hazardous marine conditions are expected through Monday.

&&

.BEACHES...
For beaches and harbors...Small water level fluctuations will
continue periodically through at least this afternoon from the
ongoing but diminishing tsunami. The Tsunami Advisory was
cancelled at 520 AM this morning.

&&

.SKYWARN...
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...None.

&&

PUBLIC...CO
AVIATION/MARINE/BEACHES...MM

The radar

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

Open the radar archive at this moment

Event by event

1 tsunami. Local standard time, as filed.

Tsunami, Orange County Coastal

When
July 30, 4:45 PM PST
Where
Orange County Coastal forecast zone
Reported by
Law Enforcement
Coordinates
33.677, -117.776 (the zone’s center; the record gives no point)

Newport Harbor Police reported that tidal-tsunami surges broke a bait barge in the Dana Point Harbor.

What these are

Tsunami
A series of waves caused by an undersea earthquake, landslide or eruption.

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

The same day elsewhere

More

Every storm in California in 2025Every state in 2025This day in weather historyWarnings in California, July 2025

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: 1288907.