Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 18-02-2019 and time 12:07:28 (Italy) in region 1 km W Accumoli (RI)

A magnitude ML 1.3 earthquake occured in region: 1 km W Accumoli (RI), on

  • 18-02-2019 11:07:28 (UTC)
  • 18-02-2019 12:07:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6970, 13.2380 at 12 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 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 19 3217 16597
Campotosto AQ 19 542 17139
Montereale AQ 19 2581 19720

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 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)
77 Km W of Montesilvano (53738 inhabitants)
83 Km SE of Perugia (166134 inhabitants)
84 Km W of Pescara (121014 inhabitants)
85 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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.3 2019-02-18
11:07:28		 42.6967 13.2378 12 2019-08-22
08:25:03		 Bollettino Sismico Italiano INGV 69738461
Reviewed
Rev100 		ML 1.2 2019-02-18
11:07:28		 42.6963 13.2348 11 2019-02-18
11:15:05		 Sala Sismica INGV-Roma 65659141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-18 11:07:28 ± 0.04
Latitude 42.6967 ± 0.0018
Longitude 13.2378 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 69738461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 270
Semi-minor axis of confidence ellipse (meter) 91
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 238
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 58
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.07015
Epicentral distance of station farthest from the epicenter (degree) 0.37232
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 69738461
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-06-20 13:41:17

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 65659141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-18 11:15:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIGS.HHZ. 2019-02-18T11:07:41.15 0.3 undecidable manual S 135 38.4282 92 -0.22 68
IV.FDMO.HHZ. 2019-02-18T11:07:41.93 0.6 undecidable manual S 342 39.627 92 0.24 46
IV.TERO.HHZ. 2019-02-18T11:07:39.15 0.1 undecidable manual S 105 30.9468 92 -0.22 93
IV.GAVE.EHZ. 2019-02-18T11:07:38.48 0.3 undecidable manual S 269 28.0497 93 -0.11 70
IV.MMO1.EHZ. 2019-02-18T11:07:37.38 0.6 undecidable manual S 18 23.6541 94 -0.04 49
IV.MC2.EHZ. 2019-02-18T11:07:37.72 0.6 undecidable manual S 351 24.1536 94 0.16 48
IV.CAMP.HHZ. 2019-02-18T11:07:37.03 0.3 undecidable manual S 142 22.6551 95 -0.13 72
IV.FDMO.HHZ. 2019-02-18T11:07:36.21 0.3 undecidable manual P 342 39.627 92 0.04 71
IV.RM33.EHZ. 2019-02-18T11:07:36.71 0.6 undecidable manual S 185 20.868 96 0.02 49
IV.ARRO.EHZ. 2019-02-18T11:07:36.47 0.3 undecidable manual P 251 40.7259 92 0.14 71
IV.GIGS.HHZ. 2019-02-18T11:07:36.14 0.3 undecidable manual P 135 38.4282 92 0.15 71
IV.LNSS.HHZ. 2019-02-18T11:07:36.17 0.6 undecidable manual S 237 19.1697 97 -0.06 48
IV.GUMA.HHZ. 2019-02-18T11:07:36.83 0.3 undecidable manual P 11 41.3253 92 0.39 67
IV.NRCA.HNZ. 2019-02-18T11:07:35.53 0.1 undecidable manual S 327 18.2706 98 -0.45 89
IV.SMA1.EHZ. 2019-02-18T11:07:34.12 0.6 undecidable manual S 133 10.7781 122 0.01 50
IV.GAVE.EHZ. 2019-02-18T11:07:34.37 0.1 undecidable manual P 269 28.0497 93 -0.01 95
IV.MTRA.EHZ. 2019-02-18T11:07:34.68 0.6 undecidable manual S 63 14.5743 107 -0.34 47
IV.TERO.HHZ. 2019-02-18T11:07:34.90 0.3 undecidable manual P 105 30.9468 92 0.06 73
IV.MC2.EHZ. 2019-02-18T11:07:33.92 0.3 undecidable manual P 351 24.1536 94 0.13 73
IV.T1299.HNN. 2019-02-18T11:07:33.50 0.3 undecidable manual S 152 7.7811 136 0.01 76
IV.CAMP.HHZ. 2019-02-18T11:07:33.57 0.1 undecidable manual P 142 22.6551 95 0.01 98
IV.LNSS.HHZ. 2019-02-18T11:07:33.08 0.1 undecidable manual P 237 19.1697 97 0.05 98
IV.RM33.EHZ. 2019-02-18T11:07:33.35 0.3 undecidable manual P 185 20.868 96 0.06 74
IV.MMO1.EHZ. 2019-02-18T11:07:33.66 0.1 undecidable manual P 18 23.6541 94 -0.05 97
IV.NRCA.HNZ. 2019-02-18T11:07:32.78 0.1 undecidable manual P 327 18.2706 98 -0.1 96
IV.MTRA.EHZ. 2019-02-18T11:07:32.34 0.1 positive manual P 63 14.5743 107 0.01 100
IV.SMA1.EHZ. 2019-02-18T11:07:31.94 0.1 undecidable manual P 133 10.7781 122 0.14 99
IV.T1299.HNN. 2019-02-18T11:07:31.64 0.1 undecidable manual P 152 7.7811 136 0.2 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:0.9 0.00009395000000000001 0.16 AML other m 2019-02-18T11:07:34.63
IV.MTRA.EHN. ML:1.3 0.0001645 0.98 AML other m 2019-02-18T11:07:34.91
IV.MTRA.EHE. ML:1.3 0.0001975 0.46 AML other m 2019-02-18T11:07:35.43
IV.NRCA.HHE. ML:1.7 0.000393 0.62 AML other m 2019-02-18T11:07:35.76
IV.LNSS.HHE. ML:1.5 0.00021349999999999999 0.66 AML other m 2019-02-18T11:07:36.23
IV.NRCA.HHN. ML:1.7 0.00041400000000000003 0.12 AML other m 2019-02-18T11:07:36.36
IV.LNSS.HHN. ML:1.5 0.00022549999999999998 0.34 AML other m 2019-02-18T11:07:36.38
IV.RM33.EHE. ML:1.2 0.00012145 0.5 AML other m 2019-02-18T11:07:37.36
IV.RM33.EHN. ML:1.0 0.00007685 0.24 AML other m 2019-02-18T11:07:37.48
IV.SMA1.EHE. ML:1.0 0.000106 0.32 AML other m 2019-02-18T11:07:37.95
IV.GAVE.EHN. ML:1.5 0.000148 0.2 AML other m 2019-02-18T11:07:38.82
IV.GAVE.EHE. ML:1.2 0.00008205 1.2 AML other m 2019-02-18T11:07:38.87
IV.TERO.HHN. ML:1.0 0.00004365 0.74 AML other m 2019-02-18T11:07:39.07
IV.TERO.HHE. ML:0.9 0.000033549999999999996 0.36 AML other m 2019-02-18T11:07:40.64
IV.GUMA.HHE. ML:1.8 0.000186 0.3 AML other m 2019-02-18T11:07:43.39
IV.GUMA.HHN. ML:1.6 0.0001285 0.78 AML other m 2019-02-18T11:07:47.93
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