Earthquake with magnitude of ML 1.9 on date 07-08-2020 and time 18:30:43 (Italy) in region 4 km N Accumoli (RI)

A magnitude ML 1.9 earthquake occured in region: 4 km N Accumoli (RI), on

  • 07-08-2020 16:30:43 (UTC)
  • 07-08-2020 18:30:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.73, 13.24 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
Accumoli RI 4 667 667
Arquata del Tronto AP 7 1178 1845
Amatrice RI 12 2657 4502
Norcia PG 14 4957 9459
Cittareale RI 14 482 9941
Montegallo AP 15 523 10464
Acquasanta Terme AP 15 2916 13380
Cascia PG 18 3217 16597
Castelsantangelo sul Nera MC 19 281 16878
Montemonaco AP 20 604 17482

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
44 Km NW of L'Aquila (69753 inhabitants)
50 Km SE of Foligno (57155 inhabitants)
52 Km E of Terni (111501 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
81 Km SE of Perugia (166134 inhabitants)
85 Km W of Pescara (121014 inhabitants)
87 Km W of Chieti (51815 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
93 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 1.9 2020-08-07
16:30:43
42.73 13.24 11 2020-08-07
16:38:40
Sala Sismica INGV-Roma 81742211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-07 16:30:43 ± 0.05
Latitude 42.73 ± 0.00
Longitude 13.24 ± 0.00
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 81742211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 375
Semi-minor axis of confidence ellipse (meter) 48
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 77
Circular confidence region, given by single value of horizontal uncertainty (meter) 380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.41998
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 53
Type of magnitude ML
Reference to an origin 81742211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-07 16:38:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSFT.HHZ. 2020-08-07T16:31:21.47 3.0 positive manual Pg 4.77 0
IV.RIBO.EHZ.01 2020-08-07T16:31:12.24 3.0 positive manual Pn 1 0
IV.ARVD.HHZ. 2020-08-07T16:31:11.84 3.0 undecidable manual S 0.02 0
IV.CIGN.HHZ. 2020-08-07T16:31:11.38 3.0 undecidable manual Pn -0.18 0
IV.EL6.EHZ. 2020-08-07T16:31:06.07 3.0 undecidable manual S 0.48 0
IV.PE3.EHZ. 2020-08-07T16:31:03.90 3.0 positive manual P -0.2 0
IV.NARO.HHZ. 2020-08-07T16:31:02.63 3.0 negative manual P -0.05 0
IV.CESX.HHZ. 2020-08-07T16:31:01.01 3.0 undecidable manual S -0.94 0
IV.APEC.HHZ. 2020-08-07T16:31:00.95 3.0 negative manual P -1.98 0
IV.MURB.HHZ. 2020-08-07T16:30:58.40 3.0 positive manual P -0.11 0
IV.CESI.HHZ. 2020-08-07T16:30:57.31 0.6 undecidable manual S 318 0.3651 50 0 48
IV.GUMA.HHZ. 2020-08-07T16:30:57.06 0.6 undecidable manual S 12 0.3363 50 0.59 42
IV.ATCC.EHZ. 2020-08-07T16:30:56.22 3.0 undecidable manual P -0.17 0
IV.MF5.EHZ. 2020-08-07T16:30:56.19 0.3 undecidable manual S 32 0.3013 50 0.77 60
IV.CSP1.EHZ. 2020-08-07T16:30:56.97 0.6 undecidable manual S 356 0.3588 50 -0.16 46
IT.MTCL.HGZ. 2020-08-07T16:30:55.53 0.6 undecidable manual S 326 0.3139 50 -0.26 46
IV.VCEL.EHZ. 2020-08-07T16:30:55.14 3.0 positive manual P -0.07 0
IV.EL6.EHZ. 2020-08-07T16:30:55.81 3.0 undecidable manual P -0.15 0
IV.GAVE.EHZ. 2020-08-07T16:30:54.29 0.6 undecidable manual S 261 0.2563 50 0.21 47
IV.ASSB.HHZ. 2020-08-07T16:30:54.17 3.0 undecidable manual P -0.31 0
IV.TERO.HHZ. 2020-08-07T16:30:54.64 0.6 undecidable manual S 112 0.2905 50 -0.45 44
IV.FIAM.HHZ. 2020-08-07T16:30:53.46 3.0 negative manual P -0.11 0
IV.CAMP.HHZ. 2020-08-07T16:30:53.09 0.6 undecidable manual S 148 0.2338 50 -0.33 46
IV.RM33.EHZ. 2020-08-07T16:30:53.32 0.6 undecidable manual S 185 0.2248 50 0.17 48
IV.MNTT.EHZ. 2020-08-07T16:30:52.96 0.6 undecidable manual P 38 0.42 50 0.37 44
IV.ARRO.EHZ. 2020-08-07T16:30:52.00 3.0 positive manual P 0.17 0
IV.LNSS.HHZ. 2020-08-07T16:30:52.49 0.6 undecidable manual S 228 0.1952 50 0.21 47
IV.CSP1.EHZ. 2020-08-07T16:30:51.31 0.1 negative manual P 356 0.3588 50 -0.24 91
IV.GUMA.HHZ. 2020-08-07T16:30:51.32 0.3 positive manual P 12 0.3363 50 0.16 70
IV.MMO1.EHZ. 2020-08-07T16:30:51.34 0.6 undecidable manual S 21 0.1781 118 -0.37 46
IV.CESI.HHZ. 2020-08-07T16:30:51.50 0.3 undecidable manual P 318 0.3651 50 -0.16 70
IV.MC2.EHZ. 2020-08-07T16:30:51.87 0.3 undecidable manual S 348 0.1817 118 0.04 74
IV.NRCA.HNZ. 2020-08-07T16:30:50.16 0.6 undecidable manual S 318 0.1358 125 -0.15 49
IV.TERO.HHZ. 2020-08-07T16:30:50.06 0.6 undecidable manual P 112 0.2905 50 -0.31 46
IT.MTCL.HGZ. 2020-08-07T16:30:50.52 0.1 positive manual P 326 0.3139 50 -0.25 92
IV.MF5.EHZ. 2020-08-07T16:30:50.69 0.3 negative manual P 32 0.3013 50 0.13 71
IV.SMA1.EHZ. 2020-08-07T16:30:50.18 0.6 undecidable manual S 145 0.125 127 0.2 48
IV.GAVE.EHZ. 2020-08-07T16:30:49.76 0.1 positive manual P 261 0.2563 50 -0.03 98
IV.CAMP.HHZ. 2020-08-07T16:30:49.24 0.1 positive manual P 148 0.2338 50 -0.17 95
IV.MTRA.HNZ. 2020-08-07T16:30:49.62 0.6 undecidable manual S 79 0.1187 129 -0.16 49
IV.RM33.EHZ. 2020-08-07T16:30:49.27 0.1 negative manual P 185 0.2248 50 0.02 99
IV.MC2.EHZ. 2020-08-07T16:30:48.44 0.1 negative manual P 348 0.1817 118 -0.05 99
IV.LNSS.HHZ. 2020-08-07T16:30:48.85 0.1 positive manual P 228 0.1952 50 0.1 97
IV.MMO1.EHZ. 2020-08-07T16:30:48.25 0.6 undecidable manual P 21 0.1781 118 -0.17 48
IV.MTRA.HNZ. 2020-08-07T16:30:47.33 0.1 undecidable manual P 79 0.1187 129 0.02 100
IV.SMA1.EHZ. 2020-08-07T16:30:47.66 0.1 positive manual P 145 0.125 127 0.24 95
IV.NRCA.HNZ. 2020-08-07T16:30:47.67 0.1 positive manual P 318 0.1358 125 0.06 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:2.1 0.0013924905 0.1408 AML other m 2020-08-07T16:30:50.38
IV.MTRA.EHN. ML:2 0.00114315195 0.2432 AML other m 2020-08-07T16:30:49.89
IV.MTRA.HNE. ML:2.1 0.0013715605 0.1408 AML other m 2020-08-07T16:30:50.38
IV.MTRA.HNN. ML:2 0.0011190429 0.2304 AML other m 2020-08-07T16:30:49.89
IV.SMA1.EHE. ML:1.8 0.0007121728 0.1024 AML other m 2020-08-07T16:30:50.41
IV.SMA1.EHN. ML:1.8 0.00066749575 0.1408 AML other m 2020-08-07T16:30:50.26
IV.NRCA.HNE. ML:2.7 0.0050726705 0.064 AML other m 2020-08-07T16:30:50.36
IV.NRCA.HNN. ML:2.6 0.0041697595 0.1152 AML other m 2020-08-07T16:30:50.73
IV.NRCA.HHE. ML:2.8 0.0057169165 0.0512 AML other m 2020-08-07T16:30:50.36
IV.NRCA.HHN. ML:2.7 0.0046912745 0.1152 AML other m 2020-08-07T16:30:50.72
IV.LNSS.HNE. ML:2.2 0.0011455053 0.2432 AML other m 2020-08-07T16:30:52.76
IV.LNSS.HNN. ML:2.3 0.001464458 0.1664 AML other m 2020-08-07T16:30:53.13
IV.LNSS.HHE. ML:2.2 0.00118678105 0.2304 AML other m 2020-08-07T16:30:52.76
IV.LNSS.HHN. ML:2.4 0.0015846845 0.1792 AML other m 2020-08-07T16:30:53.04
IV.CAMP.HHE. ML:1.3 0.000112435 0.256 AML other m 2020-08-07T16:30:53.31
IV.CAMP.HHN. ML:1.2 8.773916E-5 0.2304 AML other m 2020-08-07T16:30:54.21
IV.RM33.HNE. ML:1.9 0.0005153642 0.2304 AML other m 2020-08-07T16:30:54.78
IV.RM33.HNN. ML:1.9 0.00053539435 0.2304 AML other m 2020-08-07T16:30:53.61
IV.RM33.EHE. ML:1.9 0.00047114715 0.2304 AML other m 2020-08-07T16:30:54.78
IV.RM33.EHN. ML:2 0.0005519696 0.256 AML other m 2020-08-07T16:30:53.49
IV.GAVE.HNE. ML:2.1 0.00065801895 0.1664 AML other m 2020-08-07T16:30:55.58
IV.GAVE.EHE. ML:2.1 0.00063566045 0.1664 AML other m 2020-08-07T16:30:55.58
IV.GAVE.EHN. ML:2 0.0005188449 0.1152 AML other m 2020-08-07T16:30:54.90
IV.TERO.HHE. ML:1.8 0.0003083156 0.1408 AML other m 2020-08-07T16:30:54.78
IV.TERO.HHN. ML:1.7 0.00022323865 0.1408 AML other m 2020-08-07T16:30:54.73
IV.TERO.HNE. ML:1.8 0.0003154919 0.1536 AML other m 2020-08-07T16:30:54.72
IV.TERO.HNN. ML:1.7 0.00023442845 0.0768 AML other m 2020-08-07T16:30:55.26
IV.MF5.EHE. ML:1.7 0.0002217746 0.3072 AML other m 2020-08-07T16:30:56.93
IV.MF5.EHN. ML:1.7 0.0002305427 0.2944 AML other m 2020-08-07T16:30:57.88
IV.CSP1.EHE. ML:1.8 0.000197244095 0.256 AML other m 2020-08-07T16:30:58.29
IV.CSP1.EHN. ML:1.6 0.000137324645 0.2432 AML other m 2020-08-07T16:30:57.40
IV.GUMA.HHE. ML:2.5 0.0012987697 0.256 AML other m 2020-08-07T16:30:57.30
IV.GUMA.HHN. ML:2.3 0.0007279852 0.2432 AML other m 2020-08-07T16:30:57.32
IV.GUMA.HNE. ML:2.5 0.0012174295 0.2816 AML other m 2020-08-07T16:30:57.31
IV.GUMA.HNN. ML:2.3 0.0007336561 0.2816 AML other m 2020-08-07T16:30:58.11
IV.CESI.HNE. ML:1.6 0.000150073 0.1792 AML other m 2020-08-07T16:30:58.17
IV.CESI.HNN. ML:2 0.00031807905 0.1408 AML other m 2020-08-07T16:30:57.94
IV.CESI.HHE. ML:1.6 0.00014805849 0.0768 AML other m 2020-08-07T16:30:57.96
IV.CESI.HHN. ML:2 0.0003568203 0.128 AML other m 2020-08-07T16:30:57.94
IV.ARRO.EHE. ML:1.7 0.00015040505 0.1408 AML other m 2020-08-07T16:30:58.47
IV.ARRO.EHN. ML:1.8 0.0002259168 0.1792 AML other m 2020-08-07T16:30:59.72
IV.MNTT.EHE. ML:2.2 0.00052281855 0.4224 AML other m 2020-08-07T16:31:01.89
IV.MNTT.EHN. ML:2.1 0.00033057125 0.2048 AML other m 2020-08-07T16:31:04.86
IV.FIAM.HNE. ML:2.9 0.00180216875 1.5872 AML other m 2020-08-07T16:30:59.60
IV.FIAM.HNN. ML:1.8 0.00017064005 0.8704 AML other m 2020-08-07T16:31:16.08
IV.FIAM.HHE. ML:1 2.7368545E-5 0.2176 AML other m 2020-08-07T16:31:02.04
IV.FIAM.HHN. ML:0.9 2.2163595E-5 0.3328 AML other m 2020-08-07T16:31:03.42
IV.ASSB.HHE. ML:1.6 9.079253E-5 0.1408 AML other m 2020-08-07T16:31:04.72
IV.ASSB.HHN. ML:1.7 0.00011482427 0.1408 AML other m 2020-08-07T16:31:04.72
IV.VCEL.EHE. ML:1.7 9.112831E-5 0.704 AML other m 2020-08-07T16:31:12.13
IV.VCEL.EHN. ML:1.7 0.00010508299 0.32 AML other m 2020-08-07T16:31:05.55
IV.EL6.EHE. ML:1.6 7.571756E-5 0.32 AML other m 2020-08-07T16:31:10.63
IV.EL6.EHN. ML:1.7 8.27590325E-5 0.1408 AML other m 2020-08-07T16:31:08.98
IV.ATCC.EHE. ML:1.5 5.057974E-5 0.1408 AML other m 2020-08-07T16:31:08.72
IV.ATCC.EHN. ML:1.5 5.1590145E-5 0.3072 AML other m 2020-08-07T16:31:08.03
IV.MURB.HHE. ML:1.9 0.00011598555 0.2048 AML other m 2020-08-07T16:31:13.57
IV.MURB.HHN. ML:2 0.00011902271 0.3584 AML other m 2020-08-07T16:31:13.04
IV.MURB.HNE. ML:2.1 0.000161270015 0.4352 AML other m 2020-08-07T16:31:18.37
IV.MURB.HNN. ML:2.1 0.0001597799 0.3456 AML other m 2020-08-07T16:31:15.61
IV.NARO.HHE. ML:1.1 1.189364E-5 0.3584 AML other m 2020-08-07T16:31:25.47
IV.NARO.HHN. ML:1.1 9.697291E-6 0.2176 AML other m 2020-08-07T16:31:31.27
IV.PE3.EHE. ML:2 7.6824575E-5 0.3072 AML other m 2020-08-07T16:31:29.06
IV.PE3.EHN. ML:2.1 8.638751E-5 0.384 AML other m 2020-08-07T16:31:32.24
IV.CIGN.HHE. ML:2.3 7.3183825E-5 2.4192 AML other m 2020-08-07T16:31:52.26
IV.CIGN.HHN. ML:2.4 9.2654495E-5 2.56 AML other m 2020-08-07T16:31:52.76
IV.RIBO.EHE.01 ML:2.3 7.5949685E-5 1.1904 AML other m 2020-08-07T16:31:54.64
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