Earthquake with magnitude of ML 1.8 on date 16-12-2021 and time 01:07:37 (UTC) in region 3 km SW Amatrice (RI)

A magnitude ML 1.8 earthquake occured in region: 3 km SW Amatrice (RI), on

  • 16-12-2021 01:07:37 (UTC)
  • 16-12-2021 02:07:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6060, 13.2760 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.

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 3 2657 2657
Montereale AQ 9 2581 5238
Campotosto AQ 9 542 5780
Cittareale RI 10 482 6262
Capitignano AQ 10 665 6927
Accumoli RI 10 667 7594
Borbona RI 16 617 8211
Cagnano Amiterno AQ 17 1369 9580
Barete AQ 17 737 10317
Posta RI 17 694 11011
Crognaleto TE 18 1297 12308
Pizzoli AQ 19 4326 16634
Arquata del Tronto AP 19 1178 17812
Cortino TE 19 656 18468

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of L'Aquila (69753 inhabitants)
36 Km W of Teramo (54892 inhabitants)
52 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
72 Km W of Montesilvano (53738 inhabitants)
79 Km W of Chieti (51815 inhabitants)
79 Km W of Pescara (121014 inhabitants)
81 Km NE of Guidonia Montecelio (88673 inhabitants)
81 Km NE of Tivoli (56533 inhabitants)
91 Km SE of Perugia (166134 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 1.8 2021-12-16
01:07:37
42.6057 13.2757 12 2022-03-30
13:04:24
Bollettino Sismico Italiano INGV 98906701
Reviewed
Rev100
ML 1.8 2021-12-16
01:07:37
42.6062 13.27 11 2021-12-16
01:17:21
Sala Sismica INGV-Roma 98566541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-16 01:07:37 ± 0.05
Latitude 42.6057 ± 0.0027
Longitude 13.2757 ± 0.0049
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 98906701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 370
Semi-minor axis of confidence ellipse (meter) 59
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 53
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 40
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 41
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.05036
Epicentral distance of station farthest from the epicenter (degree) 0.67449
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 98906701
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-24 13:33:33

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 98566541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-16 01:17:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GUMA.HHZ. 2021-12-16T01:07:54.30 0.1 undecidable manual S 5 50.9157 91 0.47 87
IV.FDMO.HHZ. 2021-12-16T01:07:53.60 0.3 undecidable manual S 342 50.2164 91 -0.03 70
IV.MF5.EHZ. 2021-12-16T01:07:53.00 0.3 undecidable manual S 19 44.9217 91 0.77 60
IV.ARRO.EHZ. 2021-12-16T01:07:51.50 0.3 undecidable manual S 266 41.7249 92 0.12 73
IV.SRES.HHZ. 2021-12-16T01:07:51.39 0.3 undecidable manual P 237 74.8695 91 0.66 60
IV.FIAM.HHZ. 2021-12-16T01:07:50.80 0.3 undecidable manual S 199 39.627 92 -0.01 71
IV.ASCOL.EHE. 2021-12-16T01:07:49.90 0.3 undecidable manual S 43 37.3293 92 -0.31 68
IV.MC2.EHZ. 2021-12-16T01:07:49.50 0.3 undecidable manual S 348 34.6431 92 0.02 73
IV.GAVE.EHZ. 2021-12-16T01:07:48.60 0.3 undecidable manual S 287 32.5452 92 -0.33 67
IV.GIGS.HJZ. 2021-12-16T01:07:48.00 0.1 undecidable manual S 125 29.6481 93 -0.14 95
IV.MMO1.EHZ. 2021-12-16T01:07:48.70 0.3 undecidable manual S 7 32.8449 92 -0.3 69
IV.MNTT.EHZ. 2021-12-16T01:07:48.76 0.1 undecidable manual P 27 56.8986 91 0.79 77
MN.AQU.HNE. 2021-12-16T01:07:48.50 0.1 undecidable manual S 159 29.8479 93 0.3 95
IV.NRCA.HHZ. 2021-12-16T01:07:47.30 0.3 undecidable manual S 333 28.5492 93 -0.54 64
IV.VCEL.EHZ. 2021-12-16T01:07:47.40 0.3 undecidable manual P 117 51.8037 91 0.22 69
IV.GUMA.HHZ. 2021-12-16T01:07:47.25 0.1 undecidable manual P 5 50.9157 91 0.21 93
IV.CESX.HHZ. 2021-12-16T01:07:47.77 0.1 undecidable manual P 271 56.1993 91 -0.09 91
IV.CSP1.EHZ. 2021-12-16T01:07:47.43 0.1 undecidable manual P 354 54.2013 91 -0.12 91
IV.CESI.HHZ. 2021-12-16T01:07:47.65 0.3 undecidable manual P 326 53.6019 91 0.2 70
IV.FDMO.HHZ. 2021-12-16T01:07:46.84 0.1 undecidable manual P 342 50.2164 91 -0.09 92
IV.TERO.HHZ. 2021-12-16T01:07:46.90 0.3 undecidable manual S 86 26.8509 93 -0.51 66
IV.MF5.EHZ. 2021-12-16T01:07:46.49 0.1 undecidable manual P 19 44.9217 91 0.37 90
IV.LNSS.HHZ. 2021-12-16T01:07:45.30 0.3 undecidable manual S 269 19.2696 97 -0.07 73
IV.FAGN.HHZ. 2021-12-16T01:07:45.75 0.6 undecidable manual P 146 45.3213 91 -0.43 43
IV.FIAM.HHZ. 2021-12-16T01:07:45.30 0.1 undecidable manual P 199 39.627 92 0 95
IV.ARRO.EHZ. 2021-12-16T01:07:45.57 0.3 undecidable manual P 266 41.7249 92 -0.06 70
IV.MC2.EHZ. 2021-12-16T01:07:44.44 0.1 undecidable manual P 348 34.6431 92 -0.09 95
IV.MTRA.HNZ. 2021-12-16T01:07:44.80 0.3 undecidable manual S 30 19.4694 97 -0.63 64
IV.GAVE.EHZ. 2021-12-16T01:07:44.13 0.1 positive manual P 287 32.5452 92 -0.08 95
IV.ASCOL.EHE. 2021-12-16T01:07:44.74 0.3 undecidable manual P 43 37.3293 92 -0.21 69
IV.MMO1.EHZ. 2021-12-16T01:07:44.08 0.1 positive manual P 7 32.8449 92 -0.18 94
MN.AQU.HNE. 2021-12-16T01:07:43.84 0.1 undecidable manual P 159 29.8479 93 0.05 98
IV.NRCA.HHZ. 2021-12-16T01:07:43.41 0.1 negative manual P 333 28.5492 93 -0.18 94
IV.GIGS.HJZ. 2021-12-16T01:07:43.64 0.1 undecidable manual P 125 29.6481 93 -0.12 95
IV.TERO.HHZ. 2021-12-16T01:07:43.16 0.1 positive manual P 86 26.8509 93 -0.17 95
IV.CAMP.HHZ. 2021-12-16T01:07:43.80 0.1 undecidable manual S 125 13.3755 111 -0.05 100
IV.LNSS.HHZ. 2021-12-16T01:07:42.19 0.1 positive manual P 269 19.2696 97 0.03 99
IV.SMA1.EHZ. 2021-12-16T01:07:42.20 0.3 undecidable manual S 60 5.5944 147 -0.05 77
IV.MTRA.HNZ. 2021-12-16T01:07:42.04 0.1 undecidable manual P 30 19.4694 97 -0.16 97
IV.CAMP.HHZ. 2021-12-16T01:07:41.48 0.1 undecidable manual P 125 13.3755 111 0.2 99
IV.SMA1.EHZ. 2021-12-16T01:07:40.61 0.1 negative manual P 60 5.5944 147 0.25 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.9 0.001075 0.12 AML other m 2021-12-16T01:07:42.57
IV.SMA1.EHE. ML:2.2 0.0024050000000000005 0.4 AML other m 2021-12-16T01:07:42.62
IV.CAMP.HHE. ML:1.1 0.000123 1.04 AML other m 2021-12-16T01:07:44.91
IV.CAMP.HHN. ML:1.2 0.0001525 0.24 AML other m 2021-12-16T01:07:45.23
IV.MTRA.EHN. ML:2.2 0.0011899999999999999 0.2 AML other m 2021-12-16T01:07:45.23
IV.MTRA.HNN. ML:2.2 0.00118 0.2 AML other m 2021-12-16T01:07:45.23
IV.MTRA.HNE. ML:2.0 0.0008160000000000001 1 AML other m 2021-12-16T01:07:45.84
IV.LNSS.HHN. ML:1.7 0.0003655 0.5 AML other m 2021-12-16T01:07:45.77
IV.LNSS.HHE. ML:1.7 0.00039549999999999996 0.5 AML other m 2021-12-16T01:07:45.57
IV.MTRA.EHE. ML:2.0 0.000807 0.56 AML other m 2021-12-16T01:07:45.43
IV.TERO.HNN. ML:1.9 0.0004465 0.48 AML other m 2021-12-16T01:07:47.09
IV.TERO.HHN. ML:1.9 0.0004295 0.2 AML other m 2021-12-16T01:07:47.12
IV.TERO.HHE. ML:2.0 0.0004845 1.28 AML other m 2021-12-16T01:07:47.16
IV.TERO.HNE. ML:2.0 0.000518 0.28 AML other m 2021-12-16T01:07:47.17
IV.NRCA.HHN. ML:1.9 0.000371 0.16 AML other m 2021-12-16T01:07:47.60
IV.NRCA.HHE. ML:2.1 0.000598 0.14 AML other m 2021-12-16T01:07:47.60
IV.MMO1.EHN. ML:1.9 0.000338 1.7 AML other m 2021-12-16T01:07:49.14
IV.MMO1.EHE. ML:1.7 0.0002175 0.64 AML other m 2021-12-16T01:07:49.18
IV.GAVE.EHN. ML:1.8 0.00027449999999999995 0.6 AML other m 2021-12-16T01:07:49.39
IV.GAVE.EHE. ML:1.6 0.00019250000000000002 0.14 AML other m 2021-12-16T01:07:49.42
IV.FIAM.HHN. ML:1.1 0.000042749999999999996 0.5 AML other m 2021-12-16T01:07:52.74
IV.FIAM.HHE. ML:1.1 0.0000387 0.42 AML other m 2021-12-16T01:07:54.91
IV.FDMO.HHN. ML:1.5 0.0000789 0.52 AML other m 2021-12-16T01:07:55.40
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