ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 1.7 on date 20-03-2019 and time 00:47:29 (UTC) in region 3 km NW Accumoli (RI)

A magnitude ML 1.7 earthquake occured in region: 3 km NW Accumoli (RI), on

  • 20-03-2019 00:47:29 (UTC)
  • 20-03-2019 01:47:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.72, 13.23 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 3 667 667
Arquata del Tronto AP 8 1178 1845
Amatrice RI 11 2657 4502
Cittareale RI 13 482 4984
Norcia PG 14 4957 9941
Acquasanta Terme AP 15 2916 12857
Montegallo AP 16 523 13380
Cascia PG 18 3217 16597

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
43 Km NW of L'Aquila (69753 inhabitants)
51 Km SE of Foligno (57155 inhabitants)
51 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)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
91 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 2019-03-20
00:47:29
42.72 13.23 10 2019-03-20
01:07:09
Sala Sismica INGV-Roma 66697761
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-20 00:47:29 ± 0.05
Latitude 42.72 ± 0.00
Longitude 13.23 ± 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 66697761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 322
Semi-minor axis of confidence ellipse (meter) 294
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 111
Circular confidence region, given by single value of horizontal uncertainty (meter) 320
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 34
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) 0.11511
Epicentral distance of station farthest from the epicenter (degree) 0.61783
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 45
Type of magnitude ML
Reference to an origin 66697761
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-20 01:07:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2019-03-20T00:47:51.12 0.3 undecidable manual S 351 0.6178 50 0.76 56
IV.SNTG.HHZ. 2019-03-20T00:47:49.44 0.6 undecidable manual S 338 0.5774 50 0.28 44
IV.FIAM.HHZ. 2019-03-20T00:47:45.72 0.3 undecidable manual S 191 0.4587 50 0.08 70
IV.GUMA.HHZ. 2019-03-20T00:47:43.00 0.3 undecidable manual S 12 0.3516 50 0.53 65
IV.ARRO.EHZ. 2019-03-20T00:47:42.88 0.6 undecidable manual S 248 0.3714 50 -0.19 47
IV.MF5.EHZ. 2019-03-20T00:47:42.10 0.3 undecidable manual S 31 0.3157 50 0.7 61
IV.CESI.HHZ. 2019-03-20T00:47:42.92 0.3 undecidable manual S 320 0.3741 50 -0.22 69
IV.FDMO.HHZ. 2019-03-20T00:47:41.56 0.3 undecidable manual S 341 0.3354 50 -0.43 67
IV.EL6.EHZ. 2019-03-20T00:47:41.38 1.0 negative manual P 351 0.6178 50 -0.11 23
IV.SNTG.HHZ. 2019-03-20T00:47:40.67 0.3 undecidable manual P 338 0.5774 50 -0.13 68
IV.TERO.HHZ. 2019-03-20T00:47:40.17 0.3 undecidable manual S 109 0.2878 50 -0.41 68
IV.GAVE.EHZ. 2019-03-20T00:47:39.36 0.3 undecidable manual S 264 0.2509 50 -0.14 72
IV.RM33.EHZ. 2019-03-20T00:47:38.28 0.3 undecidable manual S 184 0.2104 113 0.09 74
IV.CAMP.HHZ. 2019-03-20T00:47:38.32 0.3 undecidable manual S 145 0.223 112 -0.34 70
IV.FIAM.HHZ. 2019-03-20T00:47:38.74 0.3 undecidable manual P 191 0.4587 50 -0.03 71
IV.CESI.HHZ. 2019-03-20T00:47:37.08 0.3 undecidable manual P 320 0.3741 50 -0.25 69
IV.ARRO.EHZ. 2019-03-20T00:47:37.51 0.6 undecidable manual P 248 0.3714 50 0.23 46
IV.MMO1.EHZ. 2019-03-20T00:47:37.27 0.3 undecidable manual S 21 0.1925 115 -0.31 70
IV.LNSS.HHZ. 2019-03-20T00:47:37.53 0.3 undecidable manual S 231 0.1835 116 0.26 71
IV.GUMA.HHZ. 2019-03-20T00:47:36.99 0.3 undecidable manual P 12 0.3516 50 0.06 72
IV.FDMO.HHZ. 2019-03-20T00:47:36.31 0.1 positive manual P 341 0.3354 50 -0.35 91
IV.MF5.EHZ. 2019-03-20T00:47:36.45 0.3 undecidable manual P 31 0.3157 50 0.13 71
IV.GAVE.EHZ. 2019-03-20T00:47:35.15 0.3 undecidable manual P 264 0.2509 50 -0.07 73
IV.MTRA.EHZ. 2019-03-20T00:47:35.19 0.3 undecidable manual S 72 0.125 126 -0.13 74
IV.TERO.HHZ. 2019-03-20T00:47:35.54 0.3 undecidable manual P 109 0.2878 50 -0.31 69
IV.NRCA.HNZ. 2019-03-20T00:47:35.76 0.3 undecidable manual S 322 0.1448 122 -0.19 73
IV.SMA1.EHZ. 2019-03-20T00:47:35.33 0.3 undecidable manual S 140 0.1151 128 0.31 72
IV.LNSS.HHZ. 2019-03-20T00:47:34.10 0.1 negative manual P 231 0.1835 116 0.17 97
IV.RM33.EHZ. 2019-03-20T00:47:34.51 0.1 negative manual P 184 0.2104 113 0.05 99
IV.CAMP.HHZ. 2019-03-20T00:47:34.60 0.3 undecidable manual P 145 0.223 112 -0.14 73
IV.MMO1.EHZ. 2019-03-20T00:47:33.96 0.3 undecidable manual P 21 0.1925 115 -0.15 73
IV.NRCA.HNZ. 2019-03-20T00:47:33.23 0.1 undecidable manual P 322 0.1448 122 0.06 100
IV.SMA1.EHZ. 2019-03-20T00:47:32.97 0.3 undecidable manual P 140 0.1151 128 0.33 71
IV.MTRA.EHZ. 2019-03-20T00:47:32.94 0.3 undecidable manual P 72 0.125 126 0.13 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:1.9 0.0007696322 0.22 AML other m 2019-03-20T00:47:36.02
IV.MTRA.EHN. ML:1.8 0.0007260764 0.16 AML other m 2019-03-20T00:47:35.33
IV.MTRA.HNE. ML:1.9 0.0007862144 0.22 AML other m 2019-03-20T00:47:36.02
IV.MTRA.HNN. ML:1.8 0.00073512025 0.14 AML other m 2019-03-20T00:47:35.33
IV.SMA1.EHE. ML:1.8 0.00065811375 0.12 AML other m 2019-03-20T00:47:35.65
IV.SMA1.EHN. ML:1.6 0.00045247185 0.12 AML other m 2019-03-20T00:47:35.45
IV.NRCA.HNE. ML:2.1 0.001175528 0.13 AML other m 2019-03-20T00:47:36.52
IV.NRCA.HNN. ML:2.2 0.0013930343 0.09 AML other m 2019-03-20T00:47:36.01
IV.NRCA.HHE. ML:2.1 0.0012224675 0.12 AML other m 2019-03-20T00:47:36.58
IV.NRCA.HHN. ML:2.3 0.0018003385 0.2 AML other m 2019-03-20T00:47:36.01
IV.LNSS.HNE. ML:1.9 0.00057879 0.24 AML other m 2019-03-20T00:47:37.77
IV.LNSS.HNN. ML:1.8 0.0004255657 0.16 AML other m 2019-03-20T00:47:37.97
IV.LNSS.HHE. ML:1.9 0.0005909878 0.24 AML other m 2019-03-20T00:47:37.77
IV.LNSS.HHN. ML:1.8 0.000526245 0.3 AML other m 2019-03-20T00:47:37.82
IV.RM33.HNE. ML:2.1 0.0008784837 0.14 AML other m 2019-03-20T00:47:38.76
IV.RM33.HNN. ML:2.2 0.00103059 0.23 AML other m 2019-03-20T00:47:38.48
IV.RM33.EHE. ML:2.1 0.0008839897 0.14 AML other m 2019-03-20T00:47:38.76
IV.RM33.EHN. ML:2.2 0.0009780507 0.22 AML other m 2019-03-20T00:47:38.49
IV.CAMP.HHE. ML:1.4 0.00016261731 0.16 AML other m 2019-03-20T00:47:38.49
IV.CAMP.HHN. ML:1.6 0.0002113856 0.28 AML other m 2019-03-20T00:47:38.49
IV.GAVE.HNE. ML:1.5 0.000166991635 0.15 AML other m 2019-03-20T00:47:39.64
IV.GAVE.EHE. ML:1.5 0.00014792951 0.16 AML other m 2019-03-20T00:47:40.18
IV.GAVE.EHN. ML:1.6 0.0002088822 0.18 AML other m 2019-03-20T00:47:39.61
IV.TERO.HHE. ML:1.6 0.0001691813 0.12 AML other m 2019-03-20T00:47:40.78
IV.TERO.HHN. ML:1.8 0.00029841855 0.08 AML other m 2019-03-20T00:47:40.67
IV.TERO.HNE. ML:1.3 8.31101E-5 0.09 AML other m 2019-03-20T00:47:41.06
IV.TERO.HNN. ML:1.5 0.00013641335 0.09 AML other m 2019-03-20T00:47:40.67
IV.FDMO.HHE. ML:1.4 9.1698055E-5 0.18 AML other m 2019-03-20T00:47:42.81
IV.FDMO.HHN. ML:1.4 9.347782E-5 0.12 AML other m 2019-03-20T00:47:42.64
IV.MF5.EHE. ML:1.5 0.00013510105 0.2 AML other m 2019-03-20T00:47:42.90
IV.MF5.EHN. ML:1.4 0.000103424375 0.24 AML other m 2019-03-20T00:47:42.91
IV.GUMA.HHE. ML:2.2 0.0006005741 0.28 AML other m 2019-03-20T00:47:43.38
IV.GUMA.HHN. ML:2.3 0.00068251175 0.3 AML other m 2019-03-20T00:47:43.45
IV.GUMA.HNE. ML:2.3 0.00065839095 0.29 AML other m 2019-03-20T00:47:43.35
IV.CESI.HHE. ML:1.5 9.5887105E-5 0.12 AML other m 2019-03-20T00:47:43.63
IV.CESI.HHN. ML:1.8 0.00018338785 0.24 AML other m 2019-03-20T00:47:43.30
IV.ARRO.EHE. ML:1.2 5.332645E-5 0.2 AML other m 2019-03-20T00:47:44.34
IV.ARRO.EHN. ML:1.2 5.2092625E-5 0.28 AML other m 2019-03-20T00:47:43.77
IV.FIAM.HHE. ML:1.2 3.7710155E-5 0.22 AML other m 2019-03-20T00:47:46.20
IV.FIAM.HHN. ML:1.1 2.9251215E-5 0.18 AML other m 2019-03-20T00:47:47.42
IV.FIAM.HNN. ML:1.3 5.110469E-5 0.18 AML other m 2019-03-20T00:47:46.43
IV.SNTG.HHE. ML:1.3 3.7344185E-5 0.14 AML other m 2019-03-20T00:47:50.81
IV.SNTG.HHN. ML:1.3 3.2995157E-5 0.22 AML other m 2019-03-20T00:47:49.00
IV.EL6.EHE. ML:1.5 6.0685095E-5 0.18 AML other m 2019-03-20T00:47:51.70
IV.EL6.EHN. ML:1.5 5.8643315E-5 0.24 AML other m 2019-03-20T00:47:53.98
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