Earthquake with magnitude of ML 1.1 on date 18-05-2020 and time 21:03:56 (Italy) in region 2 km SE Accumoli (RI)

A magnitude ML 1.1 earthquake occured in region: 2 km SE Accumoli (RI), on

  • 18-05-2020 19:03:56 (UTC)
  • 18-05-2020 21:03:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.69, 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
Accumoli RI 2 667 667
Amatrice RI 7 2657 3324
Arquata del Tronto AP 10 1178 4502
Cittareale RI 11 482 4984
Acquasanta Terme AP 15 2916 7900
Campotosto AQ 17 542 8442
Montereale AQ 18 2581 11023
Norcia PG 18 4957 15980
Montegallo AP 18 523 16503
Capitignano AQ 19 665 17168

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km W of Teramo (54892 inhabitants)
39 Km N of L'Aquila (69753 inhabitants)
52 Km E of Terni (111501 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
75 Km W of Montesilvano (53738 inhabitants)
82 Km W of Pescara (121014 inhabitants)
83 Km W of Chieti (51815 inhabitants)
85 Km SE of Perugia (166134 inhabitants)
88 Km NE of Guidonia Montecelio (88673 inhabitants)
89 Km NE of Tivoli (56533 inhabitants)
99 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
Reviewed
Rev100
ML 1.1 2020-05-18
19:03:56
42.69 13.26 10 2020-05-18
19:13:34
Sala Sismica INGV-Roma 79290871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-18 19:03:56 ± 0.06
Latitude 42.69 ± 0.00
Longitude 13.26 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79290871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 310
Semi-minor axis of confidence ellipse (meter) 234
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 251
Circular confidence region, given by single value of horizontal uncertainty (meter) 310
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 90
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.40649
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 79290871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-18 19:13:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
MN.VAE.HHZ. 2020-05-18T19:05:02.74 3.0 undecidable manual Sg 0.81 0
IV.ECTS.HHZ. 2020-05-18T19:04:53.70 3.0 undecidable manual Sg 0.14 0
HL.VLS.HHZ. 2020-05-18T19:04:46.45 3.0 undecidable manual Pg 6.21 0
IV.FIR.HHZ. 2020-05-18T19:04:44.81 3.0 undecidable manual Sn 1.94 0
IV.MAON.HHZ. 2020-05-18T19:04:30.46 3.0 undecidable manual Sg 4.61 0
IV.PII.HHZ. 2020-05-18T19:04:14.22 3.0 negative manual Pg 6.51 0
IV.GALF.HHZ. 2020-05-18T19:04:12.22 3.0 undecidable manual Pg 1.87 0
IV.CSP1.EHZ. 2020-05-18T19:04:11.92 0.6 undecidable manual S 354 0.4065 50 0.36 44
IV.FDMO.HHZ. 2020-05-18T19:04:10.51 0.3 undecidable manual S 340 0.3723 50 -0.03 72
IV.CSP1.EHZ. 2020-05-18T19:04:05.33 0.3 undecidable manual P 354 0.4065 50 0.04 71
IV.MMO1.EHZ. 2020-05-18T19:04:05.77 0.1 undecidable manual S 12 0.2167 112 0.06 98
IV.FDMO.HHZ. 2020-05-18T19:04:04.60 0.1 undecidable manual P 340 0.3723 50 -0.1 95
IV.NRCA.HHZ. 2020-05-18T19:04:04.29 0.1 undecidable manual S 323 0.1826 115 -0.21 96
IV.LNSS.HNN. 2020-05-18T19:04:04.57 0.3 undecidable manual S 243 0.1844 115 0.01 75
IV.CAMP.HHE. 2020-05-18T19:04:04.38 0.1 undecidable manual S 145 0.1853 115 -0.23 95
IV.RM33.EHE. 2020-05-18T19:04:04.35 0.6 undecidable manual S 191 0.1817 115 -0.13 49
IV.MTRA.EHZ. 2020-05-18T19:04:02.24 0.3 undecidable manual S 55 0.1196 126 -0.18 73
IV.RM33.EHE. 2020-05-18T19:04:01.08 0.3 undecidable manual P 191 0.1817 115 -0.12 73
IV.NRCA.HHZ. 2020-05-18T19:04:01.21 0.1 undecidable manual P 323 0.1826 115 0 100
IV.MMO1.EHZ. 2020-05-18T19:04:01.84 0.1 undecidable manual P 12 0.2167 112 -0.07 98
IV.LNSS.HNN. 2020-05-18T19:04:01.31 0.1 undecidable manual P 243 0.1844 115 0.06 99
IV.CAMP.HHE. 2020-05-18T19:04:01.23 0.1 undecidable manual P 145 0.1853 115 -0.05 99
IV.T1299.HNE. 2020-05-18T19:04:00.85 0.1 undecidable manual S 165 0.0549 148 0.18 99
IV.MTRA.EHZ. 2020-05-18T19:04:00.17 0.1 undecidable manual P 55 0.1196 126 0.16 98
IV.T1299.HNE. 2020-05-18T19:03:59.37 0.1 undecidable manual P 165 0.0549 148 0.37 95
IV.ROM9.HNZ. 2020-05-18T19:03:37.89 3.0 negative manual P 0.73 0
IV.RMP.HHZ. 2020-05-18T19:03:33.15 3.0 undecidable manual P -2.09 0
IV.ROSPO.HHZ. 2020-05-18T19:03:26.55 3.0 positive manual P -5.1 0
IV.VVLD.HHZ. 2020-05-18T19:03:22.68 3.0 positive manual P -2.23 0
IV.LRP.EHZ. 2020-05-18T19:03:21.84 3.0 negative manual P -0.75 0
IV.VCRE.HHZ. 2020-05-18T19:03:20.85 3.0 undecidable manual P -4.78 0
IV.CERA.HHZ. 2020-05-18T19:03:14.87 3.0 undecidable manual P -1.18 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:1.3 0.0001975 0.3 AML other m 2020-05-18T19:04:02.41
IV.MTRA.EHN. ML:1.2 0.000161 0.32 AML other m 2020-05-18T19:04:02.40
IV.MTRA.HNE. ML:1.2 0.00017407205 0.0768 AML other m 2020-05-18T19:04:02.60
IV.MTRA.HNN. ML:1.2 0.000151240715 0.1408 AML other m 2020-05-18T19:04:02.40
IV.FDMO.HHE. ML:0.5 1.001902E-5 0.1792 AML other m 2020-05-18T19:04:12.22
IV.FDMO.HHN. ML:0.6 1.467577E-5 0.1792 AML other m 2020-05-18T19:04:11.30
IV.CSP1.EHE. ML:0.7 1.744236E-5 0.6016 AML other m 2020-05-18T19:04:12.90
IV.CSP1.EHN. ML:0.7 1.6224535E-5 0.3712 AML other m 2020-05-18T19:04:13.56
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