Earthquake with magnitude of ML 0.8 on date 23-05-2022 and time 20:34:31 (UTC) in region 3 km SW Accumoli (RI)

A magnitude ML 0.8 earthquake occured in region: 3 km SW Accumoli (RI), on

  • 23-05-2022 20:34:31 (UTC)
  • 23-05-2022 22:34:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6720, 13.2300 at 14 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
Accumoli RI 3 667 667
Amatrice RI 7 2657 3324
Cittareale RI 8 482 3806
Arquata del Tronto AP 13 1178 4984
Montereale AQ 16 2581 7565
Campotosto AQ 17 542 8107
Norcia PG 18 4957 13064
Capitignano AQ 18 665 13729
Cascia PG 18 3217 16946
Acquasanta Terme AP 18 2916 19862
Borbona RI 19 617 20479
Posta RI 20 694 21173

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NW of L'Aquila (69753 inhabitants)
39 Km W of Teramo (54892 inhabitants)
49 Km E of Terni (111501 inhabitants)
53 Km SE of Foligno (57155 inhabitants)
77 Km W of Montesilvano (53738 inhabitants)
84 Km W of Pescara (121014 inhabitants)
84 Km SE of Perugia (166134 inhabitants)
85 Km W of Chieti (51815 inhabitants)
85 Km NE of Guidonia Montecelio (88673 inhabitants)
86 Km NE of Tivoli (56533 inhabitants)
96 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 2022-05-23
20:34:31
42.6718 13.2297 14 2022-05-23
20:41:46
Sala Sismica INGV-Roma 105072611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-05-23 20:34:31 ± 0.1
Latitude 42.6718 ± 0.0045
Longitude 13.2297 ± 0.0061
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 105072611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 444
Semi-minor axis of confidence ellipse (meter) 347
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 56
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.41998
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 105072611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-05-23 20:41:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2022-05-23T20:34:47.02 0.3 undecidable manual S 358 46.62 94 0.5 86
IV.CESI.HHZ. 2022-05-23T20:34:46.34 0.3 undecidable manual S 325 45.4212 94 0.14 93
IV.FDMO.HHZ. 2022-05-23T20:34:45.28 0.3 undecidable manual S 344 42.0246 95 -0.03 96
IV.PTQR.HHZ. 2022-05-23T20:34:45.45 3.0 positive manual P 0.07 0
IV.MF5.EHZ. 2022-05-23T20:34:45.52 1.0 undecidable manual S 28 39.7269 95 0.83 26
IV.MMO1.EHZ. 2022-05-23T20:34:41.02 0.3 undecidable manual S 17 26.4513 100 -0.15 96
IV.MC2.EHZ. 2022-05-23T20:34:41.48 0.3 undecidable manual S 353 26.751 100 0.22 95
IV.TERO.HHZ. 2022-05-23T20:34:41.99 0.3 undecidable manual S 100 31.0467 98 -0.39 90
IV.CESI.HHZ. 2022-05-23T20:34:40.03 0.3 undecidable manual P 325 45.4212 94 0 96
IV.MF5.EHZ. 2022-05-23T20:34:39.47 0.3 undecidable manual P 28 39.7269 95 0.31 91
IV.NRCA.HHZ. 2022-05-23T20:34:39.00 0.6 undecidable manual S 332 20.2686 106 -0.56 59
IV.CSP1.EHZ. 2022-05-23T20:34:39.55 0.6 undecidable manual P 358 46.62 94 -0.67 53
IV.FDMO.HHZ. 2022-05-23T20:34:39.50 0.3 undecidable manual P 344 42.0246 95 -0.02 96
IV.RM33.EHZ. 2022-05-23T20:34:39.09 0.3 undecidable manual S 184 18.0708 110 0.08 98
IV.LNSS.HHZ. 2022-05-23T20:34:38.77 0.3 undecidable manual S 244 17.2716 112 -0.03 100
IV.MC2.EHZ. 2022-05-23T20:34:37.17 0.3 undecidable manual P 353 26.751 100 -0.01 99
IV.TERO.HHZ. 2022-05-23T20:34:37.72 0.3 undecidable manual P 100 31.0467 98 -0.11 96
IV.SMA1.EHZ. 2022-05-23T20:34:37.23 0.3 undecidable manual S 118 9.7791 134 0.11 99
IV.MMO1.EHZ. 2022-05-23T20:34:37.04 0.3 undecidable manual P 17 26.4513 100 -0.09 97
IV.LNSS.HHZ. 2022-05-23T20:34:35.65 0.3 undecidable manual P 244 17.2716 112 -0.11 99
IV.RM33.EHZ. 2022-05-23T20:34:35.94 0.3 undecidable manual P 184 18.0708 110 0.05 99
IV.NRCA.HHZ. 2022-05-23T20:34:35.99 0.3 undecidable manual P 332 20.2686 106 -0.2 96
IV.SMA1.EHZ. 2022-05-23T20:34:34.96 0.3 undecidable manual P 118 9.7791 134 0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:0.5 0.000036400000000000004 0.5 AML other m 2022-05-23T20:34:37.51
IV.SMA1.EHE. ML:0.8 0.0000664 0.16 AML other m 2022-05-23T20:34:37.62
IV.LNSS.HHN. ML:0.8 0.00004375 0.32 AML other m 2022-05-23T20:34:38.94
IV.RM33.EHN. ML:1.1 0.00010175 0.18 AML other m 2022-05-23T20:34:39.26
IV.RM33.EHE. ML:1.0 0.00007400000000000001 0.14 AML other m 2022-05-23T20:34:39.62
IV.LNSS.HHE. ML:0.7 0.0000369 0.84 AML other m 2022-05-23T20:34:39.46
IV.MMO1.EHN. ML:0.8 0.0000286 0.38 AML other m 2022-05-23T20:34:41.27
IV.MMO1.EHE. ML:0.8 0.000027700000000000002 0.52 AML other m 2022-05-23T20:34:42.13
IV.TERO.HHE. ML:0.5 0.00001398 1.1 AML other m 2022-05-23T20:34:42.21
IV.TERO.HHN. ML:0.6 0.00001935 0.54 AML other m 2022-05-23T20:34:44.56
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