Earthquake with magnitude of ML 1.4 on date 25-03-2023 and time 09:04:20 (UTC) in region Costa Ligure centro occidentale (Savona)

A magnitude ML 1.4 earthquake occured in region: Costa Ligure centro occidentale (Savona), on

  • 25-03-2023 09:04:20 (UTC)
  • 25-03-2023 10:04:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.0290, 8.6520 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km SE of Savona (61345 inhabitants)
48 Km SW of Genova (586655 inhabitants)
73 Km E of Sanremo (54807 inhabitants)
95 Km W of La Spezia (93959 inhabitants)
97 Km E of Cuneo (56081 inhabitants)
99 Km S of Alessandria (93943 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 1.4 2023-03-25
09:04:20
44.0287 8.6517 10 2024-03-01
17:18:19
Bollettino Sismico Italiano INGV 124175081
Reviewed
Rev100
ML 1.4 2023-03-25
09:04:20
44.0427 8.6407 9 2023-03-25
09:28:05
Sala Sismica INGV-Roma 115716571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-25 09:04:20 ± 0.34
Latitude 44.0287 ± 0.0117
Longitude 8.6517 ± 0.0113
Depth (km) 10 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 124175081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1096
Semi-minor axis of confidence ellipse (meter) 899
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 349
Circular confidence region, given by single value of horizontal uncertainty (meter) 1100.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 170
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.08638
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 124175081
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-12-21 14:07:49

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 115716571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-25 09:28:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VIVA.HHZ. 2023-03-25T09:06:22.51 3.0 undecidable manual Sg 9.76 0
IV.GUMA.HHZ. 2023-03-25T09:06:20.56 3.0 undecidable manual Sg 14.64 0
IV.CLTA.HHZ. 2023-03-25T09:06:17.15 3.0 undecidable manual Pn -5.35 0
IV.PTCC.HHZ. 2023-03-25T09:06:16.29 3.0 undecidable manual Sn 1.15 0
IV.PZUN.HHZ. 2023-03-25T09:06:11.45 3.0 positive manual Pg 12.03 0
IV.CSP1.EHZ. 2023-03-25T09:06:06.99 3.0 undecidable manual Sn 3.53 0
IV.VULT.HHZ. 2023-03-25T09:05:57.35 3.0 undecidable manual Pn 1.99 0
IV.IFOR.HHZ. 2023-03-25T09:05:54.77 3.0 undecidable manual Pg 11.84 0
RF.GEPF.HHZ. 2023-03-25T09:05:35.40 3.0 positive manual Pg 11.67 0
IV.MCI.EHZ. 2023-03-25T09:05:35.41 3.0 undecidable manual Pn -0.36 0
IV.CSNT.HHZ. 2023-03-25T09:05:28.27 3.0 undecidable manual Sg 0.12 0
IV.IMOL.HNZ. 2023-03-25T09:05:03.72 3.0 negative manual Pg 1.09 0
FR.SAOF.HHZ.00 2023-03-25T09:04:46.91 0.6 undecidable manual S 267 87.7455 50 -0.08 47
GU.GBOS.HHZ. 2023-03-25T09:04:42.30 0.6 undecidable manual S 290 68.7756 50 0.37 46
GU.MGRO.HHE. 2023-03-25T09:04:41.57 0.6 undecidable manual S 272 67.2771 50 0.05 49
GU.IMI.HHE. 2023-03-25T09:04:40.22 0.6 undecidable manual S 258 61.9935 50 0.12 49
GU.EQUI.HHN. 2023-03-25T09:04:40.15 0.3 undecidable manual P 82 120.5904 50 -0.81 54
GU.STV.HHE. 2023-03-25T09:04:39.90 0.3 undecidable manual P 283 108.2139 50 0.85 54
GU.PCP.HHZ. 2023-03-25T09:04:39.01 0.6 undecidable manual S 352 57.498 50 0.11 50
GU.ENR.HHE. 2023-03-25T09:04:38.48 0.3 undecidable manual P 283 100.7214 50 0.59 61
IV.PLMA.HHE. 2023-03-25T09:04:37.47 0.3 undecidable manual P 88 95.8263 50 0.32 66
FR.SAOF.HHZ.00 2023-03-25T09:04:36.12 0.3 undecidable manual P 267 87.7455 50 0.22 69
GU.RORO.HHZ. 2023-03-25T09:04:35.83 0.6 undecidable manual S 281 47.5191 50 -0.42 48
GU.GORR.HHZ. 2023-03-25T09:04:35.04 0.3 undecidable manual P 38 81.8514 50 0.05 72
IV.QLNO.HHZ. 2023-03-25T09:04:34.60 0.6 undecidable manual S 324 40.8258 50 0.14 51
GU.CANO.HHZ. 2023-03-25T09:04:33.52 0.6 undecidable manual S 301 38.5281 50 -0.32 49
GU.MGRO.HHE. 2023-03-25T09:04:32.74 0.3 undecidable manual P 272 67.2771 50 0 75
GU.GBOS.HHZ. 2023-03-25T09:04:32.87 0.3 undecidable manual P 290 68.7756 50 -0.11 73
GU.IMI.HHE. 2023-03-25T09:04:31.74 0.3 undecidable manual P 258 61.9935 50 -0.18 73
GU.RNCA.HHE. 2023-03-25T09:04:30.73 0.3 undecidable manual P 26 54.501 50 -0.05 76
IT.GNV.HGE. 2023-03-25T09:04:30.73 0.3 undecidable manual P 26 49.9167 50 0.66 66
GU.PCP.HHZ. 2023-03-25T09:04:30.94 0.3 undecidable manual P 352 57.498 50 -0.29 72
GU.RORO.HHZ. 2023-03-25T09:04:29.35 0.3 undecidable manual P 281 47.5191 50 -0.35 72
GU.CANO.HHZ. 2023-03-25T09:04:28.05 0.1 undecidable manual P 301 38.5281 50 -0.26 100
IV.QLNO.HHZ. 2023-03-25T09:04:28.37 0.3 undecidable manual P 324 40.8258 50 -0.3 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CANO.HHE. ML:1.8 0.0002085 0.2 AML other m 2023-03-25T09:04:34.83
GU.CANO.HHN. ML:1.5 0.0001225 1.1 AML other m 2023-03-25T09:04:35.58
IV.QLNO.HHE. ML:1.2 0.000056723255 0.1408 AML other m 2023-03-25T09:04:35.50
IV.QLNO.HHN. ML:1.4 0.00007699775 0.1408 AML other m 2023-03-25T09:04:36.23
GU.RORO.HHN. ML:1.4 0.00007719265000000001 0.3392 AML other m 2023-03-25T09:04:36.69
GU.RORO.HHE. ML:1.6 0.00009790037500000001 0.1984 AML other m 2023-03-25T09:04:36.72
GU.PCP.HHE. ML:1.7 0.00010694505 1.7824 AML other m 2023-03-25T09:04:40.93
GU.PCP.HHN. ML:1.4 0.000049524489999999996 1.6416 AML other m 2023-03-25T09:04:40.94
GU.GBOS.HHN. ML:1.3 0.000034086544999999996 0.32 AML other m 2023-03-25T09:04:42.83
GU.GBOS.HHE. ML:1.1 0.00001960996 0.2624 AML other m 2023-03-25T09:04:42.98
GU.GORR.HHN. ML:1.5 0.000040849105 0.3008 AML other m 2023-03-25T09:04:46.36
GU.GORR.HHE. ML:1.4 0.000032044441 0.1408 AML other m 2023-03-25T09:04:47.26
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download