Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 16-02-2020 and time 17:59:54 (Italy) in region 2 km SW Accumoli (RI)

A magnitude ML 1.5 earthquake occured in region: 2 km SW Accumoli (RI), on

  • 16-02-2020 16:59:54 (UTC)
  • 16-02-2020 17:59:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6760, 13.2400 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
Accumoli RI 2 667 667
Amatrice RI 7 2657 3324
Cittareale RI 9 482 3806
Arquata del Tronto AP 12 1178 4984
Montereale AQ 17 2581 7565
Campotosto AQ 17 542 8107
Acquasanta Terme AP 17 2916 11023
Norcia PG 18 4957 15980
Capitignano AQ 18 665 16645
Cascia PG 19 3217 19862

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km W of Teramo (54892 inhabitants)
38 Km NW of L'Aquila (69753 inhabitants)
50 Km E of Terni (111501 inhabitants)
54 Km SE of Foligno (57155 inhabitants)
77 Km W of Montesilvano (53738 inhabitants)
83 Km W of Pescara (121014 inhabitants)
84 Km W of Chieti (51815 inhabitants)
84 Km SE of Perugia (166134 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
87 Km NE of Tivoli (56533 inhabitants)
97 Km E of Viterbo (67173 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 1.5 2020-02-16
16:59:54		 42.6758 13.2398 11 2020-07-18
21:08:32		 Bollettino Sismico Italiano INGV 78192761
Reviewed
Rev100 		ML 1.6 2020-02-16
16:59:54		 42.6837 13.2278 9 2020-02-16
17:09:05		 Sala Sismica INGV-Roma 76572111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-16 16:59:54 ± 0.07
Latitude 42.6758 ± 0.0027
Longitude 13.2398 ± 0.0037
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 78192761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 430
Semi-minor axis of confidence ellipse (meter) 130
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 232
Circular confidence region, given by single value of horizontal uncertainty (meter) 430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.66100
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 78192761
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-04-14 10:53:52

ML:1.6

Field Value
Value 1.6
Uncertainty 0.4
Num. used stations 22
Type of magnitude ML
Reference to an origin 76572111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-16 17:09:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IT.VNF1.HGZ. 2020-02-16T17:00:19.98 3.0 positive manual P 0.48 0
IV.CSP1.EHZ. 2020-02-16T17:00:10.00 0.3 undecidable manual S 356 46.2204 90 0.33 66
IV.GUMA.HHZ. 2020-02-16T17:00:09.74 0.3 undecidable manual S 10 43.623 90 0.76 56
IV.FOSV.EHZ. 2020-02-16T17:00:09.41 3.0 undecidable manual P 0.3 0
IV.CESI.HHZ. 2020-02-16T17:00:09.35 0.3 undecidable manual S 323 45.5211 90 -0.15 69
IV.FDMO.HHZ. 2020-02-16T17:00:08.39 0.3 undecidable manual S 343 41.9247 90 -0.12 71
IV.MF5.EHZ. 2020-02-16T17:00:08.58 0.3 undecidable manual S 27 38.9277 90 0.84 54
IV.RM33.HNE. 2020-02-16T17:00:08.04 0.3 undecidable manual S 18.6702 5.73 0
IV.EL6.EHZ. 2020-02-16T17:00:07.54 0.3 undecidable manual P 351 73.371 90 -0.07 67
IV.GIGS.HHZ. 2020-02-16T17:00:06.90 0.3 undecidable manual S 132 36.741 90 -0.25 68
IV.MNTT.EHZ. 2020-02-16T17:00:05.10 0.1 undecidable manual P 34 51.7038 90 0.84 72
IV.RM33.HNE. 2020-02-16T17:00:05.13 3.0 positive manual P 18.6702 5.96 0
IV.TERO.HHZ. 2020-02-16T17:00:05.10 0.3 undecidable manual S 101 30.2475 90 -0.32 69
IV.MMO1.EHZ. 2020-02-16T17:00:03.92 0.3 undecidable manual S 16 25.752 90 -0.29 71
IV.GUMA.HHZ. 2020-02-16T17:00:03.19 0.1 undecidable manual P 10 43.623 90 0.17 91
IV.CSP1.EHZ. 2020-02-16T17:00:03.29 0.1 undecidable manual P 356 46.2204 90 -0.13 93
IV.MF5.EHZ. 2020-02-16T17:00:02.55 0.1 undecidable manual P 27 38.9277 90 0.25 91
IV.CAMP.HHZ. 2020-02-16T17:00:02.88 0.3 undecidable manual S 138 20.7681 90 -0.01 73
IV.CESI.HHZ. 2020-02-16T17:00:02.89 0.3 undecidable manual P 323 45.5211 90 -0.43 65
IV.LNSS.HHZ. 2020-02-16T17:00:02.06 0.3 undecidable manual S 244 18.1707 90 -0.13 71
IV.FDMO.HHZ. 2020-02-16T17:00:02.52 0.1 undecidable manual P 343 41.9247 90 -0.23 91
IV.NRCA.HNZ. 2020-02-16T17:00:02.10 0.3 undecidable manual S 330 20.2686 90 -0.64 64
IV.ARRO.EHZ. 2020-02-16T17:00:01.95 0.3 undecidable manual P 255 40.1265 90 -0.54 62
IV.MTRA.EHZ. 2020-02-16T17:00:01.19 0.3 undecidable manual S 55 15.5733 90 -0.31 72
IV.GIGS.HHZ. 2020-02-16T17:00:01.69 0.3 undecidable manual P 132 36.741 90 -0.27 68
IV.MC2.EHZ. 2020-02-16T17:00:00.28 0.3 undecidable manual P 351 26.4513 90 -0.09 73
IV.SMA1.EHN. 2020-02-16T17:00:00.19 0.1 undecidable manual S 123 9.2796 124 0.3 96
IV.TERO.HHZ. 2020-02-16T17:00:00.69 0.1 undecidable manual P 101 30.2475 90 -0.27 92
IV.MMO1.EHZ. 2020-02-16T17:00:00.03 0.1 undecidable manual P 16 25.752 90 -0.24 94
IV.LNSS.HHZ. 2020-02-16T16:59:59.04 0.1 positive manual P 244 18.1707 90 -0.06 96
IV.NRCA.HNZ. 2020-02-16T16:59:59.15 0.1 negative manual P 330 20.2686 90 -0.27 94
IV.T1299.HNN. 2020-02-16T16:59:59.47 0.1 undecidable manual S 143 5.7942 143 0.25 98
IV.CAMP.HHZ. 2020-02-16T16:59:59.55 0.1 positive manual P 138 20.7681 90 0.05 99
IV.SMA1.EHN. 2020-02-16T16:59:58.03 0.1 undecidable manual P 123 9.2796 124 0.26 97
IV.MTRA.EHZ. 2020-02-16T16:59:58.66 0.1 positive manual P 55 15.5733 90 -0.04 100
IV.T1299.HNN. 2020-02-16T16:59:57.67 0.1 undecidable manual P 143 5.7942 143 0.29 97
MN.AQU.HNN. 2020-02-16T16:59:55.12 0.3 undecidable manual P 38.1285 -7.06 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHN. ML:1.8 0.000571 0.14 AML other m 2020-02-16T17:00:01.31
IV.MTRA.HNN. ML:1.8 0.000575 1.16 AML other m 2020-02-16T17:00:01.31
IV.LNSS.HHN. ML:1.8 0.000543 0.38 AML other m 2020-02-16T17:00:02.37
IV.LNSS.HHE. ML:1.8 0.0005740000000000001 0.34 AML other m 2020-02-16T17:00:02.30
IV.MTRA.EHE. ML:1.8 0.0005795 0.22 AML other m 2020-02-16T17:00:02.65
IV.MTRA.HNE. ML:1.8 0.000621 0.22 AML other m 2020-02-16T17:00:02.54
IV.CAMP.HHE. ML:1.1 0.00008265 1.76 AML other m 2020-02-16T17:00:02.09
IV.CAMP.HHN. ML:0.9 0.0000513 1.56 AML other m 2020-02-16T17:00:04.10
IV.TERO.HHN. ML:1.5 0.0001455 1.72 AML other m 2020-02-16T17:00:06.04
IV.TERO.HHE. ML:1.3 0.00010059999999999999 1.5 AML other m 2020-02-16T17:00:06.11
IV.FDMO.HHN. ML:1.2 0.00005515 1.3 AML other m 2020-02-16T17:00:08.84
IV.ARRO.EHN. ML:1.2 0.000056349999999999994 0.32 AML other m 2020-02-16T17:00:09.10
IV.ARRO.EHE. ML:1.2 0.00005735 0.8 AML other m 2020-02-16T17:00:09.82
IV.GUMA.HHE. ML:2.1 0.00040449999999999997 1.72 AML other m 2020-02-16T17:00:09.98
IV.GUMA.HHN. ML:1.9 0.00023899999999999998 0.38 AML other m 2020-02-16T17:00:10.22
IV.FDMO.HHE. ML:1.2 0.000053150000000000004 0.6 AML other m 2020-02-16T17:00:10.11
IV.CSP1.EHN. ML:1.5 0.00009585 0.2 AML other m 2020-02-16T17:00:10.66
IV.CSP1.EHE. ML:1.4 0.00008230000000000001 0.22 AML other m 2020-02-16T17:00:10.88
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