Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 04-03-2020 and time 07:23:31 (Italy) in region 4 km W Arquata del Tronto (AP)

A magnitude ML 1.9 earthquake occured in region: 4 km W Arquata del Tronto (AP), on

  • 04-03-2020 06:23:31 (UTC)
  • 04-03-2020 07:23:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7710, 13.2460 at 11 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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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 4 1178 1178
Accumoli RI 8 667 1845
Montegallo AP 11 523 2368
Norcia PG 13 4957 7325
Acquasanta Terme AP 13 2916 10241
Castelsantangelo sul Nera MC 16 281 10522
Montemonaco AP 16 604 11126
Amatrice RI 16 2657 13783
Cittareale RI 18 482 14265
Cascia PG 20 3217 17482

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km W of Teramo (54892 inhabitants)
48 Km N of L'Aquila (69753 inhabitants)
49 Km E of Foligno (57155 inhabitants)
54 Km E of Terni (111501 inhabitants)
79 Km E of Perugia (166134 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
86 Km W of Pescara (121014 inhabitants)
89 Km NW of Chieti (51815 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
97 Km S of Ancona (100861 inhabitants)
97 Km NE of Tivoli (56533 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.9 2020-03-04
06:23:31		 42.7707 13.2457 11 2020-07-18
21:08:24		 Bollettino Sismico Italiano INGV 77069891
Reviewed
Rev100 		ML 1.9 2020-03-04
06:23:31		 42.778 13.2527 11 2020-03-04
06:33:40		 Sala Sismica INGV-Roma 77018711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-04 06:23:31 ± 0.04
Latitude 42.7707 ± 0.0027
Longitude 13.2457 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 77069891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 363
Semi-minor axis of confidence ellipse (meter) 102
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 68
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 34
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.11152
Epicentral distance of station farthest from the epicenter (degree) 0.66730
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 77069891
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-06-12 16:14:05

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 77018711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-04 06:33:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIGS.HHZ. 2020-03-04T06:23:45.24 0.3 undecidable manual S 143 44.2224 50 -0.31 67
IV.T0110.HHZ. 2020-03-04T06:23:44.07 0.6 undecidable manual P 144 74.0703 50 -0.04 45
IV.GUMA.HHZ. 2020-03-04T06:23:43.22 0.6 undecidable manual S 13 33.2445 50 0.6 42
IV.CSP1.EHZ. 2020-03-04T06:23:43.21 0.6 undecidable manual S 355 35.8419 50 -0.09 47
IV.CESI.HHZ. 2020-03-04T06:23:43.94 0.6 undecidable manual S 313 38.0286 50 0.04 48
IV.FDMO.HHZ. 2020-03-04T06:23:42.21 0.6 undecidable manual S 336 32.1456 50 -0.13 47
IV.VCEL.EHZ. 2020-03-04T06:23:42.76 0.3 undecidable manual P 130 64.0914 50 0.19 66
IV.MF5.EHZ. 2020-03-04T06:23:42.35 0.6 undecidable manual S 36 29.748 50 0.67 41
IV.EL6.EHZ. 2020-03-04T06:23:42.25 0.3 undecidable manual P 349 63.0924 50 -0.17 67
IV.TERO.HHZ. 2020-03-04T06:23:42.47 0.3 undecidable manual S 119 33.5442 50 -0.22 69
IV.GAVE.EHZ. 2020-03-04T06:23:41.82 0.6 undecidable manual S 253 29.9478 50 0.08 48
IV.MOMA.HHZ. 2020-03-04T06:23:41.31 0.3 undecidable manual P 274 55.1004 50 0.12 68
IV.FIAM.HHZ. 2020-03-04T06:23:41.30 0.3 undecidable manual P 191 56.6988 50 -0.14 68
IV.CAMP.HHZ. 2020-03-04T06:23:41.39 0.3 undecidable manual S 153 29.2485 50 -0.17 71
IV.FEMA.HNE. 2020-03-04T06:23:40.79 0.6 undecidable manual S 323 26.5512 50 -0.05 49
IV.LNSS.HHZ. 2020-03-04T06:23:40.66 0.3 undecidable manual S 222 25.0527 50 0.22 70
IV.GIGS.HHZ. 2020-03-04T06:23:39.12 0.1 undecidable manual P 143 44.2224 50 -0.39 88
IV.OFFI.HHZ. 2020-03-04T06:23:39.66 0.1 undecidable manual P 63 40.1265 50 0.77 77
IV.CESI.HHZ. 2020-03-04T06:23:38.47 0.1 positive manual P 313 38.0286 50 -0.08 94
IV.MC2.EHZ. 2020-03-04T06:23:38.18 0.6 undecidable manual S 344 16.2726 124 0.13 49
IV.SMA1.EHZ. 2020-03-04T06:23:38.28 0.3 undecidable manual S 155 17.1717 122 -0.03 74
IV.CSP1.EHZ. 2020-03-04T06:23:38.02 0.1 positive manual P 355 35.8419 50 -0.19 93
IV.T1299.HNN. 2020-03-04T06:23:38.18 0.1 undecidable manual S 169 15.3735 125 0.38 92
IV.MF5.EHZ. 2020-03-04T06:23:37.46 0.3 undecidable manual P 36 29.748 50 0.18 70
IV.CAMP.HHZ. 2020-03-04T06:23:37.07 0.1 positive manual P 153 29.2485 50 -0.14 95
IV.TERO.HHZ. 2020-03-04T06:23:37.71 0.3 undecidable manual P 119 33.5442 50 -0.15 70
IV.GAVE.EHZ. 2020-03-04T06:23:37.33 0.3 undecidable manual P 253 29.9478 50 0.02 73
IV.GUMA.HHZ. 2020-03-04T06:23:37.94 0.1 undecidable manual P 13 33.2445 50 0.12 94
IV.FDMO.HHZ. 2020-03-04T06:23:37.39 0.1 positive manual P 336 32.1456 50 -0.27 92
IV.MMO1.EHZ. 2020-03-04T06:23:37.57 0.3 undecidable manual S 25 15.7731 125 -0.32 70
IV.LNSS.HHZ. 2020-03-04T06:23:36.58 0.1 positive manual P 222 25.0527 50 0.03 98
IV.MTRA.HNZ. 2020-03-04T06:23:36.72 0.3 undecidable manual S 97 12.3765 131 -0.25 72
IV.FEMA.HNE. 2020-03-04T06:23:36.67 0.3 undecidable manual P 323 26.5512 50 -0.12 72
IV.NRCA.HHZ. 2020-03-04T06:23:36.83 0.3 undecidable manual S 303 12.7761 130 -0.25 72
IV.MMO1.EHZ. 2020-03-04T06:23:35.01 0.1 positive manual P 25 15.7731 125 -0.08 98
IV.T1299.HNN. 2020-03-04T06:23:35.30 0.1 undecidable manual P 169 15.3735 125 0.26 95
IV.MC2.EHZ. 2020-03-04T06:23:35.21 0.1 positive manual P 344 16.2726 124 0.03 99
IV.SMA1.EHZ. 2020-03-04T06:23:35.38 0.1 positive manual P 155 17.1717 122 0.05 99
IV.NRCA.HHZ. 2020-03-04T06:23:34.68 0.1 positive manual P 303 12.7761 130 0.06 99
IV.MTRA.HNZ. 2020-03-04T06:23:34.58 0.1 positive manual P 97 12.3765 131 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:2.1 0.00138 0.08 AML other m 2020-03-04T06:23:37.10
IV.NRCA.HHN. ML:2.2 0.00151 0.08 AML other m 2020-03-04T06:23:37.10
IV.NRCA.HHE. ML:2.4 0.0024500000000000004 0.1 AML other m 2020-03-04T06:23:37.18
IV.NRCA.HNE. ML:2.4 0.0023499999999999997 0.1 AML other m 2020-03-04T06:23:37.18
IV.MTRA.HNN. ML:1.8 0.000679 0.44 AML other m 2020-03-04T06:23:37.18
IV.MTRA.EHN. ML:1.8 0.000742 0.42 AML other m 2020-03-04T06:23:37.19
IV.MTRA.EHE. ML:2.0 0.000986 1.16 AML other m 2020-03-04T06:23:37.89
IV.MTRA.HNE. ML:2.0 0.0009875 1.16 AML other m 2020-03-04T06:23:37.89
IV.SMA1.EHN. ML:2.1 0.0010715000000000002 0.24 AML other m 2020-03-04T06:23:38.34
IV.SMA1.EHE. ML:2.1 0.0011105 0.88 AML other m 2020-03-04T06:23:39.49
IV.LNSS.HHN. ML:1.8 0.000381 0.34 AML other m 2020-03-04T06:23:41.05
IV.CAMP.HHN. ML:1.8 0.0002965 0.36 AML other m 2020-03-04T06:23:41.75
IV.CAMP.HHE. ML:1.7 0.00022849999999999997 0.14 AML other m 2020-03-04T06:23:41.61
IV.LNSS.HHE. ML:1.8 0.0003915 0.12 AML other m 2020-03-04T06:23:42.22
IV.FDMO.HHN. ML:1.5 0.00014649999999999998 0.26 AML other m 2020-03-04T06:23:42.41
IV.FDMO.HHE. ML:1.4 0.0001271 0.18 AML other m 2020-03-04T06:23:42.75
IV.TERO.HHN. ML:1.9 0.00033199999999999994 1.76 AML other m 2020-03-04T06:23:42.00
IV.TERO.HHE. ML:1.8 0.00027400000000000005 0.6 AML other m 2020-03-04T06:23:43.04
IV.GAVE.EHE. ML:1.7 0.0002315 0.6 AML other m 2020-03-04T06:23:43.13
IV.GUMA.HHE. ML:2.1 0.0005505 0.24 AML other m 2020-03-04T06:23:43.44
IV.GUMA.HHN. ML:2.0 0.0004015 1.5 AML other m 2020-03-04T06:23:43.11
IV.CESI.HNN. ML:2.0 0.000354 0.88 AML other m 2020-03-04T06:23:44.08
IV.CESI.HNE. ML:2.0 0.000327 0.18 AML other m 2020-03-04T06:23:44.14
IV.CESI.HHE. ML:2.0 0.00033499999999999996 0.16 AML other m 2020-03-04T06:23:44.14
IV.GAVE.EHN. ML:1.7 0.00021799999999999999 1.36 AML other m 2020-03-04T06:23:44.18
IV.CESI.HHN. ML:2.0 0.00037849999999999993 0.6 AML other m 2020-03-04T06:23:44.47
IV.GIGS.HHN. ML:1.3 0.0000618 1.32 AML other m 2020-03-04T06:23:46.24
IV.GIGS.HHE. ML:1.2 0.00004679999999999999 0.54 AML other m 2020-03-04T06:23:46.46
IV.MOMA.HHE. ML:1.6 0.00008545 0.94 AML other m 2020-03-04T06:23:49.48
IV.MOMA.HHN. ML:1.4 0.000056800000000000005 1.3 AML other m 2020-03-04T06:23:51.86
IV.T0110.HHN. ML:1.7 0.00008075 0.46 AML other m 2020-03-04T06:23:57.35
IV.T0110.HHE. ML:1.8 0.00009784999999999999 1 AML other m 2020-03-04T06:23:59.57
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download