Earthquake with magnitude of ML 0.8 on date 28-03-2023 and time 15:14:29 (UTC) in region 6 km W Arquata del Tronto (AP)

A magnitude ML 0.8 earthquake occured in region: 6 km W Arquata del Tronto (AP), on

  • 28-03-2023 15:14:29 (UTC)
  • 28-03-2023 17:14:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7490, 13.2350 at 11 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
Arquata del Tronto AP 6 1178 1178
Accumoli RI 6 667 1845
Norcia PG 13 4957 6802
Montegallo AP 13 523 7325
Amatrice RI 14 2657 9982
Acquasanta Terme AP 15 2916 12898
Cittareale RI 16 482 13380
Castelsantangelo sul Nera MC 18 281 13661
Cascia PG 18 3217 16878
Montemonaco AP 19 604 17482

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km W of Teramo (54892 inhabitants)
46 Km N of L'Aquila (69753 inhabitants)
49 Km E of Foligno (57155 inhabitants)
52 Km E of Terni (111501 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
80 Km SE of Perugia (166134 inhabitants)
86 Km W of Pescara (121014 inhabitants)
88 Km NW of Chieti (51815 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km NE of Tivoli (56533 inhabitants)
99 Km S of Ancona (100861 inhabitants)
100 Km E of Viterbo (67173 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 2023-03-28
15:14:29
42.7488 13.2352 11 2023-03-28
15:37:10
Sala Sismica INGV-Roma 115827771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-28 15:14:29 ± 0.04
Latitude 42.7488 ± 0.0018
Longitude 13.2352 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 115827771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 285
Semi-minor axis of confidence ellipse (meter) 199
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 42
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 130
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.09
Epicentral distance of station closest to the epicenter (degree) 0.12231
Epicentral distance of station farthest from the epicenter (degree) 0.35253
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 115827771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-28 15:37:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESI.HHZ. 2023-03-28T15:14:42.78 0.6 undecidable manual S 317 39.1275 50 0.07 48
IV.FDMO.HHZ. 2023-03-28T15:14:41.40 0.6 undecidable manual S 339 34.1436 50 0.03 49
IV.TERO.HHZ. 2023-03-28T15:14:40.98 0.3 undecidable manual S 115 33.1446 50 -0.14 72
IV.CAMP.HHZ. 2023-03-28T15:14:40.40 3.0 undecidable manual P 27.5502 4.96 0
IV.RM33.EHZ. 2023-03-28T15:14:39.40 0.3 undecidable manual S 184 26.6511 50 0.01 75
IV.CESI.HHZ. 2023-03-28T15:14:37.17 0.1 undecidable manual P 317 39.1275 50 -0.05 97
IV.MMO1.EHZ. 2023-03-28T15:14:37.01 0.6 undecidable manual S 24 18.2706 120 -0.05 50
IV.TERO.HHZ. 2023-03-28T15:14:36.37 0.1 undecidable manual P 115 33.1446 50 0.07 98
IV.FDMO.HHZ. 2023-03-28T15:14:36.42 0.1 undecidable manual P 339 34.1436 50 -0.03 98
IV.RM33.EHZ. 2023-03-28T15:14:35.31 0.1 undecidable manual P 184 26.6511 50 0 100
IV.NRCA.HHZ. 2023-03-28T15:14:35.54 0.3 undecidable manual S 314 13.5753 128 -0.18 74
IV.MMO1.EHZ. 2023-03-28T15:14:34.06 0.1 undecidable manual P 24 18.2706 120 0.1 100
IV.NRCA.HHZ. 2023-03-28T15:14:33.30 0.1 negative manual P 314 13.5753 128 0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:0.9 0.0000829 0.14 AML other m 2023-03-28T15:14:35.69
IV.NRCA.HHN. ML:0.6 0.0000445 0.44 AML other m 2023-03-28T15:14:36.93
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