Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 28-03-2020 and time 07:26:38 (UTC) in region 6 km NW Arquata del Tronto (AP)

A magnitude ML 1.2 earthquake occured in region: 6 km NW Arquata del Tronto (AP), on

  • 28-03-2020 07:26:38 (UTC)
  • 28-03-2020 08:26:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8060, 13.2390 at 9 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 6 1178 1178
Montegallo AP 9 523 1701
Norcia PG 12 4957 6658
Castelsantangelo sul Nera MC 12 281 6939
Accumoli RI 12 667 7606
Montemonaco AP 13 604 8210
Acquasanta Terme AP 15 2916 11126
Montefortino FM 18 1178 12304
Ussita MC 18 444 12748
Preci PG 18 724 13472
Visso MC 19 1107 14579
Amatrice RI 20 2657 17236

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of Teramo (54892 inhabitants)
47 Km E of Foligno (57155 inhabitants)
52 Km N of L'Aquila (69753 inhabitants)
55 Km E of Terni (111501 inhabitants)
77 Km E of Perugia (166134 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
88 Km W of Pescara (121014 inhabitants)
91 Km NW of Chieti (51815 inhabitants)
93 Km S of Ancona (100861 inhabitants)
99 Km NE of Guidonia Montecelio (88673 inhabitants)
100 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 1.2 2020-03-28
07:26:38		 42.8057 13.2388 9 2020-07-18
21:08:39		 Bollettino Sismico Italiano INGV 79940031
Reviewed
Rev100 		ML 1.2 2020-03-28
07:26:38		 42.8035 13.2383 10 2020-03-28
07:32:04		 Sala Sismica INGV-Roma 77640151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-28 07:26:38 ± 0.07
Latitude 42.8057 ± 0.0027
Longitude 13.2388 ± 0.0061
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79940031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 397
Semi-minor axis of confidence ellipse (meter) 252
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 267
Circular confidence region, given by single value of horizontal uncertainty (meter) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
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) 0.09533
Epicentral distance of station farthest from the epicenter (degree) 0.29678
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 79940031
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-06-06 00:47:49

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 77640151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-28 07:32:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2020-03-28T07:26:50.38 0.6 undecidable manual S 355 31.8459 50 0.03 48
IV.RM33.EHZ. 2020-03-28T07:26:50.84 0.3 undecidable manual S 183 32.9448 50 0.19 70
IV.LNSS.HHZ. 2020-03-28T07:26:49.09 0.6 undecidable manual S 216 27.75 108 0.01 49
IV.FDMO.HHZ. 2020-03-28T07:26:49.38 0.6 undecidable manual S 334 28.4493 108 0.07 48
IV.T1299.HNZ. 2020-03-28T07:26:47.18 0.6 undecidable manual S 169 19.3695 115 0.8 40
IV.CSP1.EHZ. 2020-03-28T07:26:45.39 0.3 undecidable manual P 355 31.8459 50 -0.14 71
IV.RM33.EHZ. 2020-03-28T07:26:45.66 0.3 undecidable manual P 183 32.9448 50 -0.05 72
IV.MF5.EHZ. 2020-03-28T07:26:45.16 0.3 undecidable manual P 42 27.0507 109 0.49 66
IV.MMO1.EHZ. 2020-03-28T07:26:44.24 0.3 undecidable manual S 35 12.5763 126 -0.12 74
IV.LNSS.HHZ. 2020-03-28T07:26:44.57 0.1 undecidable manual P 216 27.75 108 -0.23 93
IV.MC2.EHZ. 2020-03-28T07:26:44.64 0.6 undecidable manual S 341 12.3765 126 0.34 47
IV.FDMO.HHZ. 2020-03-28T07:26:44.72 0.1 undecidable manual P 334 28.4493 108 -0.21 94
IV.MTRA.EHZ. 2020-03-28T07:26:44.57 0.3 undecidable manual S 113 13.9749 123 -0.17 73
IV.NRCA.HHZ. 2020-03-28T07:26:43.75 0.3 undecidable manual S 287 10.5783 131 -0.05 75
IV.T1299.HNZ. 2020-03-28T07:26:43.32 0.1 undecidable manual P 169 19.3695 115 0.08 98
IV.SMA1.EHZ. 2020-03-28T07:26:43.26 0.1 undecidable manual P 158 20.9679 113 -0.28 93
IV.MC2.EHZ. 2020-03-28T07:26:42.24 0.1 undecidable manual P 341 12.3765 126 0.2 96
IV.MTRA.EHZ. 2020-03-28T07:26:42.20 0.1 undecidable manual P 113 13.9749 123 -0.09 98
IV.NRCA.HHZ. 2020-03-28T07:26:41.72 0.1 negative manual P 287 10.5783 131 -0.03 100
IV.MMO1.EHZ. 2020-03-28T07:26:41.96 0.3 undecidable manual P 35 12.5763 126 -0.11 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:1.1 0.00015922720000000003 1.8688 AML other m 2020-03-28T07:26:44.06
IV.NRCA.HHE. ML:1.1 0.00016612395 0.1408 AML other m 2020-03-28T07:26:45.06
IV.MTRA.EHE. ML:1.1 0.0001445421 0.1184 AML other m 2020-03-28T07:26:45.28
IV.MTRA.HNE. ML:1.1 0.00013574508499999998 0.1184 AML other m 2020-03-28T07:26:45.28
IV.MTRA.EHN. ML:1.3 0.00021356365 0.3584 AML other m 2020-03-28T07:26:45.31
IV.MTRA.HNN. ML:1.3 0.0002256141 0.368 AML other m 2020-03-28T07:26:45.31
IV.NRCA.HNN. ML:1.2 0.00023050380000000001 0.1696 AML other m 2020-03-28T07:26:45.82
IV.NRCA.HHN. ML:1.2 0.0002098017 0.16 AML other m 2020-03-28T07:26:45.82
IV.FDMO.HHE. ML:0.6 0.000021094986 0.1792 AML other m 2020-03-28T07:26:50.19
IV.FDMO.HHN. ML:0.9 0.0000389327 0.4992 AML other m 2020-03-28T07:26:50.57
IV.MF5.EHN. ML:1.7 0.0002845506 0.08 AML other m 2020-03-28T07:26:52.51
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