Quakes

10 km ne of san simeon, california

USGS-NC21323712

issued: 2003-12-22 19:15Z
status: cancelled 2003-12-25 19:15Z
self-cancels: 2003-12-25 19:15Z
authority: USGS NEIC
sea: North Pacific Ocean
position: 35.700, -121.100
source: usgs · first seen 2026-09-03 15:08Z

Original warning text

10 KM NE OF SAN SIMEON, CALIFORNIA.
1. EARTHQUAKE MAGNITUDE 6.5 (MW) IN 35.700N 121.100W, DEPTH 8 KM AT 221915Z DEC 03.
2. USGS EVENT NC21323712. https://earthquake.usgs.gov/earthquakes/eventpage/nc21323712

This area · earthquake & tsunami bulletins

5 within 180 nm since 2003 · 0 in the last 12 months · 0 in force now

18KM sse of lone pine, ca2020-06-24
17KM s of searles valley, ca2020-06-04
Earthquake magnitude 6.4 (mw) in 35.705N 117.504W, depth 10 km at 041733Z jul 192019-07-04
The 2014 south napa, california earthquake2014-08-24

Season · when earthquake & tsunami bulletins happen here

month of issue, all years in the archive

Nearby now · within 120 nm

1900 CA-1, moss landing, ca 95039, USASpills · 74.5 nm

Worldwide now

5 earthquake & tsunami bulletins in force · see all

Quakes

Undersea earthquakes of magnitude 5.5 and above (USGS) and the tsunami bulletins NAVAREA coordinators relay. All current earthquake & tsunami bulletins →

Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.