Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 16-12-2020 and time 08:36:03 (UTC) in region 6 km E Amatrice (RI)

A magnitude ML 1.3 earthquake occured in region: 6 km E Amatrice (RI), on

  • 16-12-2020 08:36:03 (UTC)
  • 16-12-2020 09:36:03 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6230, 13.3630 at 5 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 6 2657 2657
Campotosto AQ 7 542 3199
Cortino TE 12 656 3855
Capitignano AQ 12 665 4520
Accumoli RI 12 667 5187
Crognaleto TE 13 1297 6484
Montereale AQ 15 2581 9065
Rocca Santa Maria TE 15 537 9602
Fano Adriano TE 16 296 9898
Cittareale RI 17 482 10380
Acquasanta Terme AP 17 2916 13296
Valle Castellana TE 17 977 14273
Arquata del Tronto AP 18 1178 15451
Pietracamela TE 19 271 15722

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km W of Teramo (54892 inhabitants)
30 Km N of L'Aquila (69753 inhabitants)
59 Km E of Terni (111501 inhabitants)
65 Km SE of Foligno (57155 inhabitants)
66 Km W of Montesilvano (53738 inhabitants)
72 Km W of Pescara (121014 inhabitants)
73 Km W of Chieti (51815 inhabitants)
87 Km NE of Guidonia Montecelio (88673 inhabitants)
87 Km NE of Tivoli (56533 inhabitants)
96 Km SE of Perugia (166134 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
Reviewed
Rev100 		ML 1.3 2020-12-16
08:36:03		 42.6232 13.363 5 2020-12-16
08:47:06		 Sala Sismica INGV-Roma 85466001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-16 08:36:03 ± 0.12
Latitude 42.6232 ± 0.0036
Longitude 13.3630 ± 0.0049
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 85466001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 491
Semi-minor axis of confidence ellipse (meter) 174
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 48
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.02158
Epicentral distance of station farthest from the epicenter (degree) 0.27879
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 85466001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-16 08:47:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2020-12-16T08:36:14.55 0.1 undecidable manual S 319 30.9468 100 0 96
IV.GIGS.HJZ. 2020-12-16T08:36:12.41 0.1 undecidable manual S 138 25.4523 102 -0.28 91
IV.TERO.HHZ. 2020-12-16T08:36:10.97 0.1 undecidable manual S 90 19.6692 105 0.24 93
IV.NRCA.HHZ. 2020-12-16T08:36:09.55 0.1 undecidable manual P 319 30.9468 100 -0.4 88
IV.MTRA.EHZ. 2020-12-16T08:36:09.28 0.1 undecidable manual S 10 15.0738 109 0.07 97
IV.LNSS.HHZ. 2020-12-16T08:36:09.35 0.1 undecidable manual P 265 26.4513 101 0.28 91
IV.GIGS.HJZ. 2020-12-16T08:36:08.64 0.1 undecidable manual P 138 25.4523 102 -0.24 92
IV.TERO.HHZ. 2020-12-16T08:36:07.83 0.1 undecidable manual P 90 19.6692 105 0.09 96
IV.CAMP.HHZ. 2020-12-16T08:36:07.84 0.1 undecidable manual S 159 10.3785 117 0.14 97
IV.CAMP.HHZ. 2020-12-16T08:36:06.07 0.1 undecidable manual P 159 10.3785 117 0.07 98
IV.MTRA.EHZ. 2020-12-16T08:36:06.79 0.1 undecidable manual P 10 15.0738 109 -0.08 97
IV.SMA1.EHZ. 2020-12-16T08:36:05.50 0.1 undecidable manual S 290 2.3976 155 -0.17 97
IV.T1299.EHZ. 2020-12-16T08:36:05.67 0.1 undecidable manual P 281 6.6933 128 0.3 94
IV.SMA1.EHZ. 2020-12-16T08:36:04.79 0.1 undecidable manual P 290 2.3976 155 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAMP.HHE. ML:1.0 0.00017299999999999998 0.28 AML other m 2020-12-16T08:36:09.16
IV.MTRA.EHN. ML:1.2 0.0001875 1.24 AML other m 2020-12-16T08:36:10.85
IV.TERO.HHN. ML:1.6 0.000297 0.18 AML other m 2020-12-16T08:36:11.17
IV.MTRA.EHE. ML:1.2 0.00016700000000000002 0.72 AML other m 2020-12-16T08:36:11.72
IV.TERO.HHE. ML:1.3 0.00016549999999999998 1.28 AML other m 2020-12-16T08:36:11.24
IV.SMA1.EHE. ML:0.0 0.002594697 0.16 AML other m 2020-12-16T08:36:05.81
IV.SMA1.EHN. ML:0.0 0.0020296336 0.1792 AML other m 2020-12-16T08:36:05.67
IV.CAMP.HHN. ML:1.1 0.000191078 0.384 AML other m 2020-12-16T08:36:09.90
IV.MTRA.HNE. ML:1.2 0.0001711316 0.1984 AML other m 2020-12-16T08:36:11.71
IV.TERO.HNE. ML:1.4 0.00023496255 0.1856 AML other m 2020-12-16T08:36:11.25
IV.TERO.HNN. ML:1.5 0.00026999695 0.1792 AML other m 2020-12-16T08:36:11.87
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