Earthquake with magnitude of ML 0.5 on date 22-05-2020 and time 22:01:31 (UTC) in region 4 km SW Arquata del Tronto (AP)

A magnitude ML 0.5 earthquake occured in region: 4 km SW Arquata del Tronto (AP), on

  • 22-05-2020 22:01:31 (UTC)
  • 23-05-2020 00:01:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.75, 13.26 at 10 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 4 1178 1178
Accumoli RI 6 667 1845
Montegallo AP 12 523 2368
Acquasanta Terme AP 13 2916 5284
Amatrice RI 14 2657 7941
Norcia PG 14 4957 12898
Cittareale RI 17 482 13380
Montemonaco AP 17 604 13984
Castelsantangelo sul Nera MC 18 281 14265
Valle Castellana TE 20 977 15242

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km W of Teramo (54892 inhabitants)
46 Km N of L'Aquila (69753 inhabitants)
50 Km E of Foligno (57155 inhabitants)
54 Km E of Terni (111501 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
81 Km E of Perugia (166134 inhabitants)
85 Km W of Pescara (121014 inhabitants)
87 Km NW of Chieti (51815 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
99 Km S of Ancona (100861 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.5 2020-05-22
22:01:31
42.75 13.26 10 2020-05-22
22:10:07
Sala Sismica INGV-Roma 79463691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-22 22:01:31 ± 0.08
Latitude 42.75 ± 0.00
Longitude 13.26 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79463691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 414
Semi-minor axis of confidence ellipse (meter) 300
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 273
Circular confidence region, given by single value of horizontal uncertainty (meter) 410
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 27
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.28598
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 79463691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-22 22:10:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CRJA.HHZ. 2020-05-22T22:02:40.66 3.0 undecidable manual Pn 5.58 0
IV.BRMO.HHZ. 2020-05-22T22:02:30.70 3.0 undecidable manual Sg 3.82 0
IV.CERA.HHZ. 2020-05-22T22:02:24.59 3.0 undecidable manual Sn -2.91 0
IV.LAV9.HHZ. 2020-05-22T22:01:43.67 3.0 undecidable manual Pg 0.74 0
IV.MF5.EHZ. 2020-05-22T22:01:42.61 0.3 undecidable manual S 32 0.2779 50 0.42 67
IV.TERO.HHZ. 2020-05-22T22:01:41.90 0.3 undecidable manual S 117 0.286 50 -0.54 65
IV.RM33.EHE. 2020-05-22T22:01:41.04 0.3 undecidable manual S 187 0.2455 50 -0.22 71
IV.LNSS.HNN. 2020-05-22T22:01:40.10 0.3 undecidable manual S 227 0.2185 112 -0.18 72
IV.MC2.EHZ. 2020-05-22T22:01:38.50 0.3 undecidable manual S 342 0.1664 118 0.07 74
IT.RMVT.HGZ. 2020-05-22T22:01:38.44 3.0 negative manual P -0.13 0
IV.NRCA.HHZ. 2020-05-22T22:01:37.11 0.3 undecidable manual S 308 0.1322 123 -0.19 73
IV.RM33.EHE. 2020-05-22T22:01:37.87 0.6 undecidable manual P 187 0.2455 50 0.86 38
IV.T1299.EHE. 2020-05-22T22:01:37.34 0.3 undecidable manual S 171 0.1205 126 0.42 69
IV.SMA1.EHZ. 2020-05-22T22:01:37.17 0.3 undecidable manual S 155 0.1349 123 -0.23 72
IV.TERO.HHZ. 2020-05-22T22:01:37.46 0.6 undecidable manual P 117 0.286 50 -0.23 47
IV.MMO1.EHZ. 2020-05-22T22:01:37.86 0.3 undecidable manual S 19 0.1547 119 -0.19 72
IV.MF5.EHZ. 2020-05-22T22:01:37.70 0.6 undecidable manual P 32 0.2779 50 0.16 47
IV.LNSS.HNN. 2020-05-22T22:01:36.33 0.3 undecidable manual P 227 0.2185 112 -0.12 73
IV.MTRA.EHZ. 2020-05-22T22:01:36.30 0.3 undecidable manual S 88 0.1025 130 -0.09 75
IV.MC2.EHZ. 2020-05-22T22:01:35.38 0.3 undecidable manual P 342 0.1664 118 0.01 75
IV.MMO1.EHZ. 2020-05-22T22:01:35.09 0.3 undecidable manual P 19 0.1547 119 -0.06 74
IV.MTRA.EHZ. 2020-05-22T22:01:34.26 0.1 undecidable manual P 88 0.1025 130 0.06 100
IV.NRCA.HHZ. 2020-05-22T22:01:34.68 0.1 undecidable manual P 308 0.1322 123 -0.05 100
IV.T1299.EHE. 2020-05-22T22:01:34.94 0.3 undecidable manual P 171 0.1205 126 0.43 69
IV.SMA1.EHZ. 2020-05-22T22:01:34.86 0.3 undecidable manual P 155 0.1349 123 0.08 74
IV.VENL.HNZ. 2020-05-22T22:01:33.62 3.0 negative manual Pn -2.53 0
IV.FIR.HHZ. 2020-05-22T22:01:08.46 3.0 undecidable manual S -2.7 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.5 0.0003075 0.34 AML other m 2020-05-22T22:01:37.16
IV.NRCA.HHN. ML:1.4 0.0002385 0.12 AML other m 2020-05-22T22:01:37.22
IV.SMA1.EHE. ML:0.6 4.15E-5 0.42 AML other m 2020-05-22T22:01:37.66
IV.SMA1.EHN. ML:0.5 2.98E-5 1.52 AML other m 2020-05-22T22:01:38.16
IV.TERO.HHE. ML:0.3 1.245E-5 1.02 AML other m 2020-05-22T22:01:42.98
IV.TERO.HHN. ML:0.5 1.34E-5 0.8 AML other m 2020-05-22T22:01:42.28
IV.MTRA.EHE. ML:0.5 3.8649315E-5 0.3712 AML other m 2020-05-22T22:01:36.63
IV.MTRA.EHN. ML:0.4 3.185374E-5 0.8448 AML other m 2020-05-22T22:01:36.88
IV.NRCA.HNE. ML:1.4 0.00028152885 0.0768 AML other m 2020-05-22T22:01:37.16
IV.NRCA.HNN. ML:1.3 0.000194924 0.1024 AML other m 2020-05-22T22:01:37.22
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download