Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 07-10-2019 and time 09:45:32 (Italy) in region 4 km W Amatrice (RI)

A magnitude ML 1.1 earthquake occured in region: 4 km W Amatrice (RI), on

  • 07-10-2019 07:45:32 (UTC)
  • 07-10-2019 09:45:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6260, 13.2390 at 13 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
Amatrice RI 4 2657 2657
Cittareale RI 7 482 3139
Accumoli RI 8 667 3806
Montereale AQ 11 2581 6387
Capitignano AQ 13 665 7052
Campotosto AQ 13 542 7594
Borbona RI 15 617 8211
Posta RI 16 694 8905
Arquata del Tronto AP 17 1178 10083
Cagnano Amiterno AQ 19 1369 11452
Barete AQ 20 737 12189

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NW of L'Aquila (69753 inhabitants)
38 Km W of Teramo (54892 inhabitants)
49 Km E of Terni (111501 inhabitants)
57 Km SE of Foligno (57155 inhabitants)
76 Km W of Montesilvano (53738 inhabitants)
81 Km NE of Guidonia Montecelio (88673 inhabitants)
82 Km W of Pescara (121014 inhabitants)
82 Km NE of Tivoli (56533 inhabitants)
82 Km W of Chieti (51815 inhabitants)
88 Km SE of Perugia (166134 inhabitants)
96 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 1.1 2019-10-07
07:45:32		 42.6265 13.239 13 2020-02-28
16:42:12		 Bollettino Sismico Italiano INGV 74492441
Reviewed
Rev100 		ML 1.1 2019-10-07
07:45:32		 42.6172 13.2572 12 2019-10-07
07:56:23		 Sala Sismica INGV-Roma 73104461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-07 07:45:32 ± 0.14
Latitude 42.6265 ± 0.0063
Longitude 13.2390 ± 0.0073
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 74492441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 770
Semi-minor axis of confidence ellipse (meter) 315
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 143
Circular confidence region, given by single value of horizontal uncertainty (meter) 770.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 213
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.30037
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 73104461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-07 07:56:23

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 74492441
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-12-09 17:14:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CET2.HHZ. 2019-10-07T07:47:09.92 3.0 undecidable manual Sn 2.34 0
IV.PTRP.HHZ. 2019-10-07T07:46:50.19 3.0 undecidable manual Sn -1.05 0
IV.MBAL.EHZ. 2019-10-07T07:46:49.36 3.0 undecidable manual Sn -1.09 0
IV.ECTS.EHZ. 2019-10-07T07:46:49.36 3.0 positive manual Pg 12.35 0
IV.VULT.HHZ. 2019-10-07T07:46:34.41 3.0 undecidable manual Sn -3.85 0
IV.GALF.HHZ. 2019-10-07T07:46:32.56 3.0 negative manual Pn -4.8 0
IV.PAOL.HHZ. 2019-10-07T07:46:29.94 3.0 undecidable manual Sg 6.56 0
CR.STON.BHZ. 2019-10-07T07:46:27.10 3.0 undecidable manual Pg 9.71 0
IV.ZONE.HHZ. 2019-10-07T07:46:15.26 3.0 undecidable manual Pn -0.69 0
IV.FNVD.HHZ. 2019-10-07T07:46:09.88 3.0 undecidable manual Sn -6.65 0
IV.RIBO.EHZ.01 2019-10-07T07:46:03.30 3.0 undecidable manual Sg 1.48 0
IV.PESA.HHZ. 2019-10-07T07:46:02.74 3.0 undecidable manual Sg 0.12 0
IV.BRSN.EHZ. 2019-10-07T07:45:52.64 3.0 positive manual Pg 2.58 0
IV.SRES.HHZ. 2019-10-07T07:45:47.02 3.0 undecidable manual Sn 0.27 0
IV.FIR.HHZ. 2019-10-07T07:45:46.80 3.0 undecidable manual Pn -1.29 0
IV.PIEI.HHZ. 2019-10-07T07:45:43.40 3.0 undecidable manual S 0
IV.GIGS.HHZ. 2019-10-07T07:45:43.59 0.6 undecidable manual S 125 33.3444 96 -0.12 47
IV.TERO.HHZ. 2019-10-07T07:45:42.49 0.3 undecidable manual S 91 29.748 97 -0.26 70
IV.MTRA.EHZ. 2019-10-07T07:45:39.77 0.1 undecidable manual S 42 19.3695 106 -0.24 94
IV.CAMP.HHZ. 2019-10-07T07:45:39.48 0.6 undecidable manual S 126 17.1717 111 0.02 49
IV.GIGS.HHZ. 2019-10-07T07:45:38.89 0.6 undecidable manual P 125 33.3444 96 0 48
IV.TERO.HHZ. 2019-10-07T07:45:38.55 0.3 undecidable manual P 91 29.748 97 0.21 69
IV.RM33.EHZ. 2019-10-07T07:45:38.30 0.1 undecidable manual S 189 13.1757 121 -0.21 95
IV.ARCI.HNZ. 2019-10-07T07:45:38.34 3.0 undecidable manual P -2.24 0
IV.SMA1.EHZ. 2019-10-07T07:45:37.52 0.1 undecidable manual S 87 7.881 141 0.08 99
IV.TRE1.HNZ. 2019-10-07T07:45:37.92 3.0 negative manual P -1.31 0
IV.FOSV.EHZ. 2019-10-07T07:45:37.95 3.0 undecidable manual Pg 0.42 0
IV.MTRA.EHZ. 2019-10-07T07:45:36.74 0.3 undecidable manual P 42 19.3695 106 -0.02 74
IV.CAMP.HHZ. 2019-10-07T07:45:36.63 0.3 undecidable manual P 126 17.1717 111 0.19 71
IV.T1299.EHE. 2019-10-07T07:45:36.73 0.3 undecidable manual S 76 3.5964 161 -0.15 73
IV.SMA1.EHZ. 2019-10-07T07:45:35.56 0.1 undecidable manual P 87 7.881 141 0.29 95
IV.T1299.EHE. 2019-10-07T07:45:35.02 0.1 undecidable manual P 76 3.5964 161 0.07 100
IV.RM33.EHZ. 2019-10-07T07:45:35.94 0.1 undecidable manual P 189 13.1757 121 0.05 99
IV.PIEI.HHZ. 2019-10-07T07:45:33.35 3.0 undecidable manual P 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.5 0.00039623299999999996 0.2432 AML other m 2019-10-07T07:45:37.80
IV.SMA1.EHN. ML:1.0 0.00012406095 0.1152 AML other m 2019-10-07T07:45:37.93
IV.RM33.EHE. ML:1.4 0.0002203688 0.1408 AML other m 2019-10-07T07:45:38.76
IV.RM33.HNE. ML:1.3 0.0001859231 0.128 AML other m 2019-10-07T07:45:38.69
IV.RM33.EHN. ML:0.9 0.000080280025 0.1856 AML other m 2019-10-07T07:45:39.60
IV.MTRA.EHN. ML:0.9 0.00006123126 0.1408 AML other m 2019-10-07T07:45:39.94
IV.MTRA.EHE. ML:0.9 0.00006170576999999999 0.2816 AML other m 2019-10-07T07:45:40.15
IV.TERO.HNN. ML:1.2 0.00006919086 0.8576 AML other m 2019-10-07T07:45:40.17
IV.TERO.HHE. ML:0.5 0.000016297740500000002 0.064 AML other m 2019-10-07T07:45:43.72
IV.TERO.HHN. ML:0.7 0.000027066239999999998 0.064 AML other m 2019-10-07T07:45:43.72
IV.TERO.HNE. ML:1.2 0.00007801151 0.8672 AML other m 2019-10-07T07:45:50.37
IV.RM33.HNN. ML:1.1 0.00011562918 0.8512 AML other m 2019-10-07T07:45:51.14
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