Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 09-12-2019 and time 09:19:48 (UTC) in region 5 km W Amatrice (RI)

A magnitude ML 1.1 earthquake occured in region: 5 km W Amatrice (RI), on

  • 09-12-2019 09:19:48 (UTC)
  • 09-12-2019 10:19:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6310, 13.2330 at 10 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 5 2657 2657
Cittareale RI 6 482 3139
Accumoli RI 7 667 3806
Montereale AQ 12 2581 6387
Capitignano AQ 14 665 7052
Campotosto AQ 14 542 7594
Borbona RI 15 617 8211
Posta RI 16 694 8905
Arquata del Tronto AP 17 1178 10083
Cagnano Amiterno AQ 19 1369 11452

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NW of L'Aquila (69753 inhabitants)
39 Km W of Teramo (54892 inhabitants)
49 Km E of Terni (111501 inhabitants)
56 Km SE of Foligno (57155 inhabitants)
76 Km W of Montesilvano (53738 inhabitants)
82 Km NE of Guidonia Montecelio (88673 inhabitants)
82 Km NE of Tivoli (56533 inhabitants)
83 Km W of Pescara (121014 inhabitants)
83 Km W of Chieti (51815 inhabitants)
87 Km SE of Perugia (166134 inhabitants)
95 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 2019-12-09
09:19:48		 42.6312 13.2328 10 2020-02-28
16:42:25		 Bollettino Sismico Italiano INGV 76489901
Reviewed
Rev100 		ML 1.1 2019-12-09
09:19:48		 42.6347 13.2322 10 2019-12-09
09:25:26		 Sala Sismica INGV-Roma 74475381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-09 09:19:48 ± 0.13
Latitude 42.6312 ± 0.0045
Longitude 13.2328 ± 0.0061
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76489901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 499
Semi-minor axis of confidence ellipse (meter) 373
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 243
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.28239
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 74475381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-09 09:25:26

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 76489901
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-13 15:39:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.RSP.HHZ. 2019-12-09T09:21:20.30 3.0 undecidable manual Pg 19.6 0
CR.STON.BHZ. 2019-12-09T09:21:20.84 3.0 undecidable manual Sg 20.15 0
IV.IFIL.HHZ. 2019-12-09T09:21:18.88 3.0 undecidable manual Sn 2.47 0
OX.CIMO.HHZ. 2019-12-09T09:21:17.93 3.0 undecidable manual Sn -9.99 0
AC.KBN.HHZ. 2019-12-09T09:21:07.08 3.0 undecidable manual Pn 7.17 0
IV.MTGR.HHZ. 2019-12-09T09:21:00.38 3.0 undecidable manual Pg 16.74 0
IV.EUCT.HNZ. 2019-12-09T09:20:57.89 3.0 undecidable manual Pg 11.64 0
IV.CRMI.HHZ. 2019-12-09T09:20:56.52 3.0 undecidable manual Sg 5.46 0
IV.ZONE.HHZ. 2019-12-09T09:20:51.73 3.0 negative manual Pg 6.42 0
OX.CIMO.HHZ. 2019-12-09T09:20:49.70 3.0 negative manual Pg 7.16 0
IV.GIB.HHZ. 2019-12-09T09:20:47.94 3.0 undecidable manual Pg 6.48 0
IV.RIBO.EHZ.01 2019-12-09T09:20:44.67 3.0 undecidable manual Sg 4.79 0
IV.CAGR.HHZ. 2019-12-09T09:20:40.35 3.0 negative manual Pn -6.57 0
IV.CADC.HNZ. 2019-12-09T09:20:34.89 3.0 undecidable manual Pn -7.05 0
IV.COR1.EHZ. 2019-12-09T09:20:30.82 3.0 undecidable manual Sg 4.93 0
IV.VBKN.HHZ. 2019-12-09T09:20:25.99 3.0 undecidable manual Sn 3.52 0
IV.NARO.HHZ. 2019-12-09T09:20:24.71 3.0 undecidable manual Sn -3.96 0
IV.MMUR.HNZ. 2019-12-09T09:20:22.64 3.0 undecidable manual Sg 0.95 0
IV.BRSN.EHZ. 2019-12-09T09:20:17.65 3.0 positive manual Pn -0.19 0
IV.CSNT.HHZ. 2019-12-09T09:20:15.98 3.0 positive manual Pg 1.03 0
IV.SEI.HHZ. 2019-12-09T09:20:14.93 3.0 undecidable manual Pn -4.69 0
IX.CLT3.HHZ.02 2019-12-09T09:20:10.03 3.0 undecidable manual Pn 1.43 0
IV.MCRV.HHZ. 2019-12-09T09:20:07.91 3.0 undecidable manual Pn -0.34 0
IV.TOLF.HHZ. 2019-12-09T09:20:00.30 3.0 positive manual P -2.08 0
IV.MC2.EHZ. 2019-12-09T09:20:00.78 0.6 undecidable manual S 353 31.3464 50 0.65 41
IV.COR1.EHZ. 2019-12-09T09:19:59.37 3.0 positive manual Pn -6.53 0
IV.NRCA.HHZ. 2019-12-09T09:19:57.79 0.3 undecidable manual S 337 24.4533 111 -0.3 70
IV.MTRA.EHZ. 2019-12-09T09:19:56.06 0.3 undecidable manual S 44 19.2696 116 -0.39 69
IV.CAMP.HHE. 2019-12-09T09:19:55.52 0.6 undecidable manual S 126 17.871 118 -0.49 45
IV.MC2.EHZ. 2019-12-09T09:19:55.16 0.6 undecidable manual P 353 31.3464 50 -0.26 46
IV.LNSS.HHZ. 2019-12-09T09:19:55.48 0.3 undecidable manual S 259 16.0728 121 0.02 75
IV.RM33.EHZ. 2019-12-09T09:19:54.50 0.3 undecidable manual S 186 13.6752 125 -0.26 72
IV.NRCA.HHZ. 2019-12-09T09:19:54.16 0.3 undecidable manual P 337 24.4533 111 -0.08 73
IV.SMA1.EHZ. 2019-12-09T09:19:53.64 0.3 undecidable manual S 90 8.3805 139 0.26 72
IV.MTRA.EHZ. 2019-12-09T09:19:53.09 0.3 undecidable manual P 44 19.2696 116 -0.2 72
IV.CAMP.HHE. 2019-12-09T09:19:53.03 0.3 undecidable manual P 126 17.871 118 -0.01 75
IV.LNSS.HHZ. 2019-12-09T09:19:52.81 0.1 positive manual P 259 16.0728 121 0.09 99
IV.T1299.HNN. 2019-12-09T09:19:52.87 0.3 undecidable manual S 85 3.996 157 0.29 72
IV.RM33.EHZ. 2019-12-09T09:19:52.28 0.1 positive manual P 186 13.6752 125 -0.04 100
IV.SMA1.EHZ. 2019-12-09T09:19:51.76 0.1 undecidable manual P 90 8.3805 139 0.24 97
IV.T1299.HNN. 2019-12-09T09:19:51.29 0.1 undecidable manual P 85 3.996 157 0.23 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.6 0.0006234999999999999 0.24 AML other m 2019-12-09T09:19:53.87
IV.RM33.EHE. ML:1.2 0.00015900000000000002 0.6 AML other m 2019-12-09T09:19:54.38
IV.SMA1.EHN. ML:1.1 0.00016299999999999998 0.7 AML other m 2019-12-09T09:19:54.36
IV.RM33.EHN. ML:1.0 0.00011249999999999998 0.14 AML other m 2019-12-09T09:19:54.88
IV.NRCA.HHE. ML:1.0 0.00005665 0.7 AML other m 2019-12-09T09:19:58.01
IV.NRCA.HHN. ML:0.9 0.0000435 0.5 AML other m 2019-12-09T09:19:59.32
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