Updated 2026-08-21 16:44:49 UTC

M 1.8 — 48 km WSW of Carlsbad, CA

Magnitude 1.8, depth 9.8 km, 2026-08-21 04:48:27 UTC.

MagnitudeM 1.8
Depth9.8 km
Felt reports—
Statusreviewed
TsunamiNo
Quake Pulse Activity Index

Activity trend

A high index means recent activity is high relative to the selected historical baseline. It does not mean that a larger earthquake is about to occur.

Quake Pulse Activity Index48/100Normal
Current 30 days1
Historical monthly median1.0
Historical percentileP48
M5+ in 30 days0
M6+ in 30 days0
Activity trendaround the historical range (+0%)
Baseline months: 43Last calculation: 2026-09-03 06:17:39How the index works →
Quake Pulse

What to know

A short factual reading of this event from the available observations.

  • Magnitude M 1.8 at 9.8 km depth.
Counts describe detected earthquakes and are not a forecast or hazard assessment.
Quake Pulse

Within the Quake Pulse database

Long-term comparisons are more robust at higher magnitudes because small-earthquake detection capability has changed over time.

Magnitude rank in database#194,146
Magnitude rank in country#772
M4.5+ within 250 km, ±15 days0
Quake Pulse

Impact and context

Descriptive indicators available for this event and its surroundings.

0/100Limited context
Felt reports—
Max felt intensity (CDI)—
Instrumental intensity (MMI)—
PAGER alertNot available
Tsunami indicator—
USGS significance49
Depth contextShallow
Nearby major cityLos Angeles126 km · 3,820,000

Nearby major city

Displayed population is the indexed city population, not an estimate of people exposed.

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These indicators describe data available after detection. They are neither a forecast nor a direct estimate of damage or individual risk.

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Around this epicenter

Nearby events observed around this epicenter. Spatial proximity does not necessarily mean they belong to the same sequence.

M 1.8 · 48 km WSW of Carlsbad, CA · 100 kmInteractive 3D view of earthquakes within 100 km of M 1.8 · 48 km WSW of Carlsbad, CA.M 1.8 · 48 km WSW of Carlsbad, CAM 1.1 · 3 km ENE of Escondido, CA · 73.8 kmM 1.1 · 4 km ENE of Escondido, CA · 74.1 kmM 1.9 · 30 km SW of Dana Point, CA · 31.5 kmM 0.0 · 43 km WSW of Carlsbad, CA · 6.1 kmM 0.8 · 9 km SW of San Diego Country Estates, CA · 90.9 kmM 1.4 · 8 km WSW of Pala, CA · 73.6 kmM 1.0 · 10 km WSW of Corona, CA · 96.4 kmM 1.3 · 7 km ESE of Chula Vista, CA · 88.4 kmM 2.0 · 7 km WNW of Lake Elsinore, CA · 88.3 kmM 0.5 · 5 km SW of Palomar Observatory, CA · 93.5 kmM 2.2 · 27 km ESE of Avalon, CA · 36.9 kmM 2.0 · 27 km ESE of Avalon, CA · 37.2 kmM 2.1 · 26 km ESE of Avalon, CA · 37.9 kmM 3.4 · 26 km ESE of Avalon, CA · 38.6 kmM 3.0 · 25 km ESE of Avalon, CA · 39.4 kmM 2.6 · 27 km ESE of Avalon, CA · 36.9 kmM 1.9 · 20 km SW of Rancho Palos Verdes, CA · 96.3 kmM 0.7 · 10 km ESE of Yorba Linda, CA · 98.5 kmM 1.0 · 7 km NNW of La Mesa, CA · 73.1 kmM 1.0 · 8 km SW of Corona, CA · 95.2 kmM 0.6 · 6 km S of Palomar Observatory, CA · 96.0 kmM 0.5 · 9 km SW of San Diego Country Estates, CA · 91.2 kmM 0.5 · 7 km WNW of Lake Elsinore, CA · 88.6 kmM 1.4 · 11 km SSE of Newport Beach, CA · 61.4 kmM 1.1 · 7 km ESE of Chula Vista, CA · 88.8 kmM 1.0 · 11 km ENE of North Tustin, CA · 92.1 kmM 1.7 · 11 km ENE of North Tustin, CA · 91.3 kmM 1.4 · 3 km SSE of Villa Park, CA · 90.5 kmM 1.0 · 8 km NW of Palomar Observatory, CA · 94.7 kmM 2.7 · 4 km NE of Temecula, CA · 88.5 kmM 0.8 · 3 km S of Palomar Observatory, CA · 96.8 kmM 1.2 · 5 km NNW of Lake Elsinore, CA · 92.6 kmM 0.8 · 4 km WSW of Aguanga, CA · 98.6 kmM 1.1 · 9 km SE of Coto De Caza, CA · 70.6 kmM 1.7 · 4 km N of Laguna Beach, CA · 66.9 kmM 1.6 · 5 km SSE of Home Gardens, CA · 99.5 kmM 1.0 · 4 km ESE of Temecula, CA · 86.9 kmM 1.5 · 5 km ENE of Rancho San Diego, CA · 89.8 kmM 1.4 · 6 km NNW of Lakeside, CA · 82.1 kmM 0.7 · 8 km NNE of Pala, CA · 88.0 kmM 1.9 · 7 km NNE of Pala, CA · 87.3 kmM 2.1 · 1 km N of Huntington Beach, CA · 82.1 kmM 0.8 · 3 km SSW of Palomar Observatory, CA · 95.9 kmM 1.0 · 10 km WNW of Palomar Observatory, CA · 90.7 kmM 0.6 · 9 km SW of San Diego Country Estates, CA · 91.3 kmM 1.2 · 4 km SW of Chula Vista, CA · 81.4 kmM 1.3 · 26 km SW of Laguna Beach, CA · 44.8 kmM 1.6 · 32 km WSW of La Jolla, CA · 29.4 kmM 1.3 · 12 km SSE of San Clemente, CA · 45.0 kmM 0.7 · 3 km N of Palomar Observatory, CA · 99.5 kmM 2.2 · 48 km WSW of Encinitas, CA · 8.3 kmM 0.9 · 8 km E of Bonita, CA · 89.2 kmM 1.5 · 9 km WSW of Corona, CA · 96.4 kmM 0.6 · 1 km ENE of Palomar Observatory, CA · 99.2 kmM 1.4 · 14 km SSW of San Pedro, CA · 86.9 kmM 1.5 · 14 km SSW of San Pedro, CA · 86.8 kmM 1.0 · 7 km SSE of Temecula, CA · 82.8 kmM 0.6 · 6 km S of Palomar Observatory, CA · 96.6 kmM 1.9 · 14 km SSW of San Pedro, CA · 87.2 kmM 1.2 · 10 km WSW of Murrieta, CA · 75.9 kmM 1.2 · 14 km WNW of Camp Pendleton South, CA · 43.9 kmM 1.1 · 3 km NNW of Murrieta, CA · 86.6 kmM 1.0 · 7 km ENE of San Diego, CA · 71.1 kmM 0.9 · 9 km NNE of Pala, CA · 89.3 kmM 1.4 · 2 km E of Rolling Hills, CA · 98.9 kmM 1.4 · 50 km WSW of Carlsbad, CA · 3.0 kmM 0.3 · 8 km SSE of Palomar Observatory, CA · 98.0 kmM 1.6 · 7 km SSE of Home Gardens, CA · 98.6 kmM 1.3 · 6 km N of Lake Elsinore, CA · 93.7 kmM 1.0 · 13 km NNE of Trabuco Canyon, CA · 91.4 kmM 0.7 · 6 km N of Lakeside, CA · 83.2 kmM 1.7 · 4 km SW of Palomar Observatory, CA · 94.7 kmM 1.4 · 5 km SE of Bostonia, CA · 89.1 kmM 0.8 · 4 km WSW of Aguanga, CA · 98.9 kmM 0.5 · 9 km ENE of North Tustin, CA · 92.3 kmM 2.3 · 9 km SE of San Pedro, CA · 86.7 kmM 1.3 · 12 km SSE of Corona, CA · 91.4 kmM 1.4 · 7 km S of Palomar Observatory, CA · 95.2 kmM 2.3 · 12 km NNE of Trabuco Canyon, CA · 90.3 kmM 0.3 · 5 km NNW of Murrieta Hot Springs, CA · 91.4 kmM 1.1 · 6 km NNW of La Mesa, CA · 73.4 kmM 1.3 · 6 km ESE of Bonita, CA · 87.6 kmM 1.0 · 7 km NNW of La Mesa, CA · 73.2 kmM 2.1 · 10 km WSW of Corona, CA · 95.8 kmM 1.3 · 10 km WSW of Corona, CA · 96.2 kmM 1.6 · 10 km WSW of Corona, CA · 95.9 kmM 2.2 · 10 km WSW of Corona, CA · 96.0 kmM 3.0 · 10 km WSW of Corona, CA · 96.1 kmM 1.6 · 10 km WSW of Corona, CA · 95.9 kmM 0.5 · 4 km WSW of Aguanga, CA · 99.0 kmM 0.4 · 6 km SSE of Palomar Observatory, CA · 98.7 kmM 1.6 · 3 km NNW of Murrieta, CA · 86.2 kmM 2.3 · 20 km SSE of San Pedro, CA · 75.5 kmM 0.5 · 8 km SSE of Palomar Observatory, CA · 97.9 kmM 1.5 · 7 km NNW of Lakeside, CA · 82.3 kmM 1.4 · 3 km ESE of Chula Vista, CA · 85.2 kmM 1.3 · 5 km N of Lake Elsinore, CA · 92.9 kmM 1.0 · 5 km N of Santa Ana, CA · 89.4 km
M 1.8 · 48 km WSW of Carlsbad, CA100 km98 Recent earthquakes

Descriptive map centered on the epicenter; it does not represent felt intensity or risk.

Sequence context

No public sequence is currently associated with this event.

Nearby events · 100 km

Quake Pulse

USGS data evolution

Earthquake parameters can be revised after first publication. This timeline shows versions retained by Quake Pulse.

Revisions1
Magnitude change+0.0M 1.8 → M 1.8
Depth change+0.0 km
Last update71743 min
2026-08-21 16:44:49 UTC2026-08-21 16:44:49 UTC

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Interpret the numbers

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Important limits

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