Earthquake with magnitude of ML 0.8 on date 30-05-2023 and time 13:32:44 (Italy) in region 6 km S Acquasanta Terme (AP)

A magnitude ML 0.8 earthquake occured in region: 6 km S Acquasanta Terme (AP), on

  • 30-05-2023 11:32:44 (UTC)
  • 30-05-2023 13:32:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7150, 13.3960 at 15 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Acquasanta Terme AP 6 2916 2916
Valle Castellana TE 9 977 3893
Arquata del Tronto AP 10 1178 5071
Rocca Santa Maria TE 11 537 5608
Accumoli RI 12 667 6275
Amatrice RI 13 2657 8932
Cortino TE 14 656 9588
Montegallo AP 15 523 10111
Campotosto AQ 18 542 10653
Roccafluvione AP 18 2010 12663
Crognaleto TE 20 1297 13960

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km W of Teramo (54892 inhabitants)
40 Km N of L'Aquila (69753 inhabitants)
63 Km E of Foligno (57155 inhabitants)
64 Km E of Terni (111501 inhabitants)
66 Km W of Montesilvano (53738 inhabitants)
73 Km W of Pescara (121014 inhabitants)
75 Km NW of Chieti (51815 inhabitants)
93 Km E of Perugia (166134 inhabitants)
97 Km NE of Guidonia Montecelio (88673 inhabitants)
97 Km NE of Tivoli (56533 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
Reviewed
Rev100
ML 0.8 2023-05-30
11:32:44
42.7147 13.3963 15 2023-05-30
11:50:37
Sala Sismica INGV-Roma 117879911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-05-30 11:32:44 ± 0.06
Latitude 42.7147 ± 0.0018
Longitude 13.3963 ± 0.0037
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 117879911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 302
Semi-minor axis of confidence ellipse (meter) 246
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 55
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.07
Epicentral distance of station closest to the epicenter (degree) 0.04227
Epicentral distance of station farthest from the epicenter (degree) 0.29138
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 117879911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-05-30 11:50:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIGS.HHZ. 2023-05-30T11:32:55.72 0.3 undecidable manual S 154 32.3454 102 -0.08 72
IV.NRCA.HHZ. 2023-05-30T11:32:54.20 0.3 undecidable manual S 300 26.4513 106 -0.06 73
IV.RM33.EHZ. 2023-05-30T11:32:54.55 0.6 undecidable manual S 213 27.2505 105 0.1 49
IV.TERO.HHZ. 2023-05-30T11:32:52.49 0.6 undecidable manual S 121 19.7691 115 -0.09 49
7F.SIB2.EHN. 2023-05-30T11:32:52.81 0.3 undecidable manual S 339 20.9679 113 -0.06 74
7F.SIB3.EHN. 2023-05-30T11:32:52.71 0.3 undecidable manual S 330 20.5683 113 -0.06 74
IV.NRCA.HHZ. 2023-05-30T11:32:50.17 0.1 undecidable manual P 300 26.4513 106 0 99
IV.RM33.EHZ. 2023-05-30T11:32:50.35 1.0 undecidable manual P 213 27.2505 105 0.07 24
IV.GIGS.HHZ. 2023-05-30T11:32:50.92 0.6 positive manual P 154 32.3454 102 -0.13 48
7F.SIB3.EHN. 2023-05-30T11:32:49.34 0.1 undecidable manual P 330 20.5683 113 0.03 99
IV.TERO.HHZ. 2023-05-30T11:32:49.25 0.3 negative manual P 121 19.7691 115 0.05 74
7F.SIB2.EHN. 2023-05-30T11:32:49.36 0.1 undecidable manual P 339 20.9679 113 -0.01 100
IV.MTRA.EHZ. 2023-05-30T11:32:49.70 0.3 undecidable manual S 0 4.6953 159 -0.04 76
IV.MTRA.EHZ. 2023-05-30T11:32:47.69 0.1 undecidable manual P 0 4.6953 159 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TERO.HHE. ML:0.6 0.000027099999999999998 1.88 AML other m 2023-05-30T11:32:52.97
IV.TERO.HHN. ML:0.7 0.000028449999999999997 0.12 AML other m 2023-05-30T11:32:53.08
IV.NRCA.HHE. ML:1.0 0.0000475 0.18 AML other m 2023-05-30T11:32:54.33
IV.NRCA.HHN. ML:1.1 0.0000634 1.14 AML other m 2023-05-30T11:32:54.42
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