Earthquake with magnitude of ML 1.7 on date 16-02-2020 and time 19:12:06 (UTC) in region 1 km W Accumoli (RI)

A magnitude ML 1.7 earthquake occured in region: 1 km W Accumoli (RI), on

  • 16-02-2020 19:12:06 (UTC)
  • 16-02-2020 20:12:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7, 13.24 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 1 667 667
Amatrice RI 9 2657 3324
Arquata del Tronto AP 10 1178 4502
Cittareale RI 11 482 4984
Norcia PG 16 4957 9941
Acquasanta Terme AP 16 2916 12857
Montegallo AP 18 523 13380
Cascia PG 18 3217 16597
Campotosto AQ 19 542 17139
Montereale AQ 19 2581 19720

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
41 Km NW of L'Aquila (69753 inhabitants)
51 Km E of Terni (111501 inhabitants)
52 Km SE of Foligno (57155 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
83 Km SE of Perugia (166134 inhabitants)
84 Km W of Pescara (121014 inhabitants)
86 Km W of Chieti (51815 inhabitants)
88 Km NE of Guidonia Montecelio (88673 inhabitants)
89 Km NE of Tivoli (56533 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 1.7 2020-02-16
19:12:06
42.7 13.24 14 2020-02-16
19:16:28
Sala Sismica INGV-Roma 76574431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-16 19:12:06 ± 0.1
Latitude 42.70 ± 0.00
Longitude 13.24 ± 0.01
Depth (km) 14 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76574431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 496
Semi-minor axis of confidence ellipse (meter) 209
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 275
Circular confidence region, given by single value of horizontal uncertainty (meter) 500
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.3948
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:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 76574431
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-16 19:16:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IT.VNF1.HGZ. 2020-02-16T19:12:49.12 3.0 undecidable manual S 0.05 0
IV.EL6.EHZ. 2020-02-16T19:12:29.45 3.0 undecidable manual S 0.2 0
IV.CSP1.EHZ. 2020-02-16T19:12:20.65 0.1 undecidable manual S 357 0.3948 96 0.37 89
IV.CESI.HHZ. 2020-02-16T19:12:20.44 0.6 undecidable manual S 322 0.3912 96 0.25 46
IV.ARRO.EHZ. 2020-02-16T19:12:19.36 0.6 undecidable manual S 251 0.366 96 -0.06 47
IV.FDMO.HHZ. 2020-02-16T19:12:19.21 0.6 undecidable manual S 342 0.3561 97 0.08 48
IV.T0110.HHZ. 2020-02-16T19:12:18.21 3.0 positive manual P -0.4 0
IV.VCEL.EHZ. 2020-02-16T19:12:17.15 3.0 negative manual P -0.09 0
IV.MNTT.EHZ. 2020-02-16T19:12:16.25 3.0 positive manual P 0.6 0
IV.MOMA.HHZ. 2020-02-16T19:12:16.24 3.0 negative manual P -0.21 0
IV.RM33.EHZ. 2020-02-16T19:12:16.69 3.0 undecidable manual S 2.17 0
IV.MC2.EHZ. 2020-02-16T19:12:15.22 3.0 undecidable manual S -0.32 0
IV.CAMP.HHZ. 2020-02-16T19:12:14.64 0.6 undecidable manual S 142 0.2059 106 -0.12 49
IV.CESI.HHZ. 2020-02-16T19:12:14.13 0.1 undecidable manual P 322 0.3912 96 -0.09 94
IV.GUMA.HHZ. 2020-02-16T19:12:14.31 3.0 positive manual P 0.11 0
IV.LNSS.HHZ. 2020-02-16T19:12:13.79 0.6 undecidable manual S 237 0.1727 112 -0.04 50
IV.ARRO.EHZ. 2020-02-16T19:12:13.84 0.1 undecidable manual P 251 0.366 96 0.06 95
IV.FDMO.HHZ. 2020-02-16T19:12:13.55 0.6 negative manual P 342 0.3561 97 -0.07 47
IV.CSP1.EHZ. 2020-02-16T19:12:13.68 0.1 undecidable manual P 357 0.3948 96 -0.6 83
IV.MF5.EHZ. 2020-02-16T19:12:13.68 3.0 positive manual P 0.17 0
IV.NRCA.HNZ. 2020-02-16T19:12:13.32 0.6 undecidable manual S 327 0.1628 114 -0.24 48
IV.GIGS.HHZ. 2020-02-16T19:12:13.24 3.0 negative manual P -0.48 0
IV.TERO.HHZ. 2020-02-16T19:12:12.15 3.0 undecidable manual P -0.4 0
IV.MTRA.HNZ. 2020-02-16T19:12:12.66 0.6 undecidable manual S 63 0.1313 122 -0.09 50
IV.MMO1.EHZ. 2020-02-16T19:12:11.26 3.0 positive manual P -0.09 0
IV.SMA1.EHZ. 2020-02-16T19:12:11.80 0.6 undecidable manual S 133 0.0989 133 -0.18 50
IV.GAVE.EHZ. 2020-02-16T19:12:11.86 3.0 negative manual P -0.03 0
IV.CAMP.HHZ. 2020-02-16T19:12:11.09 0.6 positive manual P 142 0.2059 106 0 50
IV.NRCA.HNZ. 2020-02-16T19:12:10.41 0.1 negative manual P 327 0.1628 114 0.01 100
IV.LNSS.HHZ. 2020-02-16T19:12:10.69 0.1 positive manual P 237 0.1727 112 0.13 97
IV.MTRA.HNZ. 2020-02-16T19:12:09.99 0.1 undecidable manual P 63 0.1313 122 0.06 99
IV.SMA1.EHZ. 2020-02-16T19:12:09.68 0.1 positive manual P 133 0.0989 133 0.19 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.9 0.000716 0.32 AML other m 2020-02-16T19:12:12.39
IV.SMA1.EHN. ML:1.7 0.000472 0.92 AML other m 2020-02-16T19:12:12.65
IV.MTRA.EHE. ML:1.9 0.00061 1 AML other m 2020-02-16T19:12:13.74
IV.NRCA.HHN. ML:2.2 0.001125 0.1 AML other m 2020-02-16T19:12:13.46
IV.NRCA.HHE. ML:2.2 0.00127 0.2 AML other m 2020-02-16T19:12:13.45
IV.MTRA.HNN. ML:1.7 0.000394 0.74 AML other m 2020-02-16T19:12:13.27
IV.MTRA.EHN. ML:1.7 0.0003845 0.34 AML other m 2020-02-16T19:12:13.82
IV.MTRA.HNE. ML:1.8 0.00059 1.16 AML other m 2020-02-16T19:12:13.12
IV.LNSS.HHE. ML:2.1 0.0008505 1.7 AML other m 2020-02-16T19:12:13.98
IV.LNSS.HHN. ML:2.1 0.000843 0.2 AML other m 2020-02-16T19:12:14.30
IV.CAMP.HHE. ML:1.2 8.33E-5 0.28 AML other m 2020-02-16T19:12:14.83
IV.CAMP.HHN. ML:1 6.465E-5 0.78 AML other m 2020-02-16T19:12:15.48
IV.GAVE.EHN. ML:1.8 0.000282 0.42 AML other m 2020-02-16T19:12:16.41
IV.GAVE.EHE. ML:1.9 0.0004055 0.88 AML other m 2020-02-16T19:12:16.95
IV.TERO.HHN. ML:1.6 0.000163 1.68 AML other m 2020-02-16T19:12:17.85
IV.TERO.HHE. ML:1.5 0.000126 1.08 AML other m 2020-02-16T19:12:18.61
IV.CESI.HHE. ML:1.4 7.96E-5 0.18 AML other m 2020-02-16T19:12:20.63
IV.ARRO.EHN. ML:1.4 8.06E-5 0.42 AML other m 2020-02-16T19:12:20.55
IV.GUMA.HHE. ML:2.2 0.000571 1.74 AML other m 2020-02-16T19:12:20.96
IV.GUMA.HHN. ML:2 0.000289 1.48 AML other m 2020-02-16T19:12:21.15
IV.ARRO.EHE. ML:1.4 8.625E-5 0.42 AML other m 2020-02-16T19:12:21.20
IV.CESI.HHN. ML:1.6 0.000126 0.42 AML other m 2020-02-16T19:12:21.67
IV.MOMA.HHE. ML:1.7 0.0001135 1.82 AML other m 2020-02-16T19:12:24.95
IV.MOMA.HHN. ML:1.6 9.95E-5 0.18 AML other m 2020-02-16T19:12:25.38
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