Earthquake with magnitude of ML 1.1 on date 26-05-2020 and time 06:09:43 (Italy) in region 8 km W Arquata del Tronto (AP)

A magnitude ML 1.1 earthquake occured in region: 8 km W Arquata del Tronto (AP), on

  • 26-05-2020 04:09:43 (UTC)
  • 26-05-2020 06:09:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.78, 13.2 at 17 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 8 1178 1178
Norcia PG 9 4957 6135
Accumoli RI 10 667 6802
Montegallo AP 13 523 7325
Castelsantangelo sul Nera MC 14 281 7606
Cascia PG 17 3217 10823
Acquasanta Terme AP 17 2916 13739
Montemonaco AP 17 604 14343
Amatrice RI 18 2657 17000
Preci PG 18 724 17724
Cittareale RI 18 482 18206
Ussita MC 20 444 18650
Visso MC 20 1107 19757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km W of Teramo (54892 inhabitants)
45 Km E of Foligno (57155 inhabitants)
50 Km NW of L'Aquila (69753 inhabitants)
51 Km E of Terni (111501 inhabitants)
76 Km E of Perugia (166134 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
90 Km W of Pescara (121014 inhabitants)
92 Km NW of Chieti (51815 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km NE of Tivoli (56533 inhabitants)
97 Km S of Ancona (100861 inhabitants)
98 Km E of Viterbo (67173 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
Rev 100 ML 1.1 2020-05-26
04:09:43
42.77 13.2 17 2020-05-26
04:14:55
Sala Sismica INGV-Roma 79570941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-26 04:09:43 ± 0.25
Latitude 42.77 ± 0.01
Longitude 13.20 ± 0.01
Depth (km) 17 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79570941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 907
Semi-minor axis of confidence ellipse (meter) 331
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 246
Circular confidence region, given by single value of horizontal uncertainty (meter) 910
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 139
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.1367
Epicentral distance of station farthest from the epicenter (degree) 0.52251
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 79570941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-26 04:14:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2020-05-26T04:09:54.28 0.6 undecidable manual S 342 0.2743 108 0.03 67
IV.RM33.EHZ. 2020-05-26T04:09:54.05 0.6 undecidable manual S 178 0.2662 108 0.04 68
IV.TRTR.HHZ. 2020-05-26T04:09:53.11 0.6 positive manual P 86 0.5225 97 -0.72 54
IV.MMO1.EHZ. 2020-05-26T04:09:51.29 0.6 undecidable manual S 36 0.1547 126 0.25 67
IV.SMA1.EHZ. 2020-05-26T04:09:51.46 0.6 undecidable manual S 146 0.1745 121 -0.07 68
IV.MC2.EHZ. 2020-05-26T04:09:50.54 0.6 undecidable manual S 356 0.1367 130 -0.09 70
IV.TERO.HHZ. 2020-05-26T04:09:50.93 0.3 undecidable manual P 117 0.3318 104 0.31 96
IV.CESI.HHZ. 2020-05-26T04:09:50.19 0.3 undecidable manual P 317 0.3166 104 -0.17 100
IV.RM33.EHZ. 2020-05-26T04:09:49.59 1.0 undecidable manual P 178 0.2662 108 0.06 34
IV.FDMO.HHZ. 2020-05-26T04:09:49.60 0.6 positive manual P 342 0.2743 108 -0.07 68
IV.MMO1.EHZ. 2020-05-26T04:09:48.07 1.0 undecidable manual P 36 0.1547 126 0.26 33
IV.SMA1.EHZ. 2020-05-26T04:09:48.24 1.0 positive manual P 146 0.1745 121 0.14 34
IV.MC2.EHZ. 2020-05-26T04:09:47.67 0.6 positive manual P 356 0.1367 130 0.09 69
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:0.8 4.24958E-5 1.04 AML other m 2020-05-26T04:09:55.78
IV.SMA1.EHN. ML:0.8 4.2385925E-5 1.84 AML other m 2020-05-26T04:09:50.57
IV.RM33.HNE. ML:1.5 0.00015084535 2.0608 AML other m 2020-05-26T04:09:52.65
IV.RM33.HNN. ML:1.6 0.00018428944 2.3104 AML other m 2020-05-26T04:09:56.58
IV.RM33.EHE. ML:1 4.6928705E-5 2.5408 AML other m 2020-05-26T04:09:55.95
IV.RM33.EHN. ML:0.9 3.510629E-5 2.0608 AML other m 2020-05-26T04:09:56.83
IV.FDMO.HHE. ML:0.8 2.365059E-5 2.24 AML other m 2020-05-26T04:09:52.25
IV.FDMO.HHN. ML:0.8 2.937025E-5 2 AML other m 2020-05-26T04:09:50.90
IV.CESI.HHE. ML:1 4.021626E-5 2.4192 AML other m 2020-05-26T04:09:54.77
IV.CESI.HHN. ML:0.8 2.344347E-5 1.52 AML other m 2020-05-26T04:09:55.34
IV.CESI.HNE. ML:1.7 0.00016996145 2.0896 AML other m 2020-05-26T04:09:50.25
IV.CESI.HNN. ML:1.6 0.00015773564 1.1808 AML other m 2020-05-26T04:09:51.01
IV.TERO.HHE. ML:0.9 2.9343425E-5 1.2992 AML other m 2020-05-26T04:09:51.21
IV.TERO.HHN. ML:0.9 2.92738E-5 1.2416 AML other m 2020-05-26T04:09:59.82
IV.TERO.HNE. ML:1.6 0.00013814246 1.3024 AML other m 2020-05-26T04:10:09.03
IV.TERO.HNN. ML:1.7 0.0001700573 1.392 AML other m 2020-05-26T04:10:00.28
IV.TRTR.HHE. ML:2.6 0.00076526265 0.9824 AML other m 2020-05-26T04:10:08.65
IV.TRTR.HHN. ML:2.7 0.0010179341 0.7808 AML other m 2020-05-26T04:10:07.20
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