Earthquake with magnitude of ML 1.7 on date 31-10-2020 and time 18:37:36 (Italy) in region 2 km S Amatrice (RI)

A magnitude ML 1.7 earthquake occured in region: 2 km S Amatrice (RI), on

  • 31-10-2020 17:37:36 (UTC)
  • 31-10-2020 18:37:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.617, 13.289 at 11 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 2 2657 2657
Campotosto AQ 9 542 3199
Accumoli RI 9 667 3866
Cittareale RI 11 482 4348
Capitignano AQ 11 665 5013
Montereale AQ 11 2581 7594
Borbona RI 17 617 8211
Crognaleto TE 17 1297 9508
Arquata del Tronto AP 18 1178 10686
Cortino TE 18 656 11342
Cagnano Amiterno AQ 18 1369 12711
Barete AQ 18 737 13448
Posta RI 19 694 14142
Acquasanta Terme AP 20 2916 17058
Pizzoli AQ 20 4326 21384

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of L'Aquila (69753 inhabitants)
34 Km W of Teramo (54892 inhabitants)
53 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
71 Km W of Montesilvano (53738 inhabitants)
78 Km W of Pescara (121014 inhabitants)
78 Km W of Chieti (51815 inhabitants)
83 Km NE of Guidonia Montecelio (88673 inhabitants)
83 Km NE of Tivoli (56533 inhabitants)
91 Km SE of Perugia (166134 inhabitants)
100 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 1.7 2020-10-31
17:37:36
42.6167 13.2893 11 2021-02-26
14:56:15
Bollettino Sismico Italiano INGV 86241301
Reviewed
Rev100
ML 1.7 2020-10-31
17:37:36
42.6252 13.2878 11 2020-10-31
17:46:23
Sala Sismica INGV-Roma 84327561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-31 17:37:36 ± 0.05
Latitude 42.6167 ± 0.0027
Longitude 13.2893 ± 0.0049
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86241301

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 359
Semi-minor axis of confidence ellipse (meter) 160
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 248
Circular confidence region, given by single value of horizontal uncertainty (meter) 360
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 42
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.56028
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 30
Type of magnitude ML
Reference to an origin 86241301
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-14 08:46:56

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 84327561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-31 17:46:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RNI2.HHZ. 2020-10-31T17:37:56.08 3.0 negative manual P -0.89 0
IV.MOMA.HHZ. 2020-10-31T17:37:56.06 0.3 undecidable manual S 290 0.5603 50 0.43 62
IV.T0110.HHZ. 2020-10-31T17:37:55.37 3.0 undecidable manual S 0.41 0
IV.CESX.HHZ. 2020-10-31T17:37:54.66 0.3 undecidable manual S 269 0.5171 50 0.32 64
IV.CSP1.EHZ. 2020-10-31T17:37:53.65 0.3 undecidable manual S 353 0.4784 50 0.43 62
IV.CESI.HHZ. 2020-10-31T17:37:53.45 0.6 undecidable manual S 324 0.4793 50 0.21 44
IV.FDMO.HHZ. 2020-10-31T17:37:52.64 0.3 undecidable manual S 341 0.4452 50 0.43 63
IV.FAGN.HHZ. 2020-10-31T17:37:51.54 3.0 undecidable manual S -0.02 0
IV.T0110.HHZ. 2020-10-31T17:37:47.21 3.0 undecidable manual P 0.02 0
IV.MOMA.HHZ. 2020-10-31T17:37:47.47 0.1 undecidable manual P 290 0.5603 50 -0.09 90
IV.MMO1.EHZ. 2020-10-31T17:37:47.23 0.1 undecidable manual S 6 0.2842 50 -0.21 94
IV.GAVE.EHZ. 2020-10-31T17:37:47.59 0.1 undecidable manual S 285 0.3004 50 -0.33 90
IV.CESI.HHZ. 2020-10-31T17:37:46.14 0.3 undecidable manual P 324 0.4793 50 -0.04 69
IV.GIGS.HJZ. 2020-10-31T17:37:46.59 0.3 undecidable manual S 128 0.2653 50 -0.3 69
IV.CSP1.EHZ. 2020-10-31T17:37:46.21 0.6 undecidable manual P 353 0.4784 50 0.04 46
IV.CESX.HHZ. 2020-10-31T17:37:46.68 0.3 undecidable manual P 269 0.5171 50 -0.14 67
MN.AQU.HNZ. 2020-10-31T17:37:46.80 0.6 undecidable manual S 162 0.2761 50 -0.41 44
IV.FAGN.HHZ. 2020-10-31T17:37:45.58 3.0 undecidable manual P 0.35 0
IV.MF5.EHZ. 2020-10-31T17:37:45.06 0.3 undecidable manual P 19 0.3912 50 0.39 65
IV.TERO.HHZ. 2020-10-31T17:37:45.56 0.3 undecidable manual S 88 0.2311 50 -0.33 69
IV.NRCA.HHZ. 2020-10-31T17:37:45.95 0.1 undecidable manual S 329 0.2518 50 -0.55 87
IV.GUMA.HHZ. 2020-10-31T17:37:45.93 0.1 undecidable manual P 4 0.447 50 0.31 87
IV.FDMO.HHZ. 2020-10-31T17:37:45.35 0.3 undecidable manual P 341 0.4452 50 -0.23 67
IV.ARRO.EHZ. 2020-10-31T17:37:44.40 0.1 undecidable manual P 265 0.3867 50 -0.2 91
IV.MTRA.EHZ. 2020-10-31T17:37:43.25 0.1 undecidable manual S 29 0.161 121 -0.54 90
IV.MC2.EHZ. 2020-10-31T17:37:43.10 0.3 undecidable manual P 346 0.304 50 -0.07 72
IV.RM33.EHZ. 2020-10-31T17:37:42.59 0.3 undecidable manual S 207 0.1205 129 0.05 74
IV.MMO1.EHZ. 2020-10-31T17:37:42.74 0.1 undecidable manual P 6 0.2842 50 -0.09 96
MN.AQU.HNZ. 2020-10-31T17:37:42.65 0.1 undecidable manual P 162 0.2761 50 -0.05 96
IV.GAVE.EHZ. 2020-10-31T17:37:42.93 0.1 undecidable manual P 285 0.3004 50 -0.18 93
IV.GIGS.HJZ. 2020-10-31T17:37:42.46 0.3 undecidable manual P 128 0.2653 50 -0.05 72
IV.CAMP.HHZ. 2020-10-31T17:37:42.57 0.1 undecidable manual S 133 0.1196 129 0.07 99
IV.NRCA.HHZ. 2020-10-31T17:37:42.06 0.1 undecidable manual P 329 0.2518 50 -0.23 93
IV.TERO.HHZ. 2020-10-31T17:37:41.88 0.1 undecidable manual P 88 0.2311 50 -0.06 97
IV.LNSS.HHZ. 2020-10-31T17:37:41.06 0.1 undecidable manual P 266 0.1835 50 -0.06 97
IV.CAMP.HHZ. 2020-10-31T17:37:40.21 0.1 undecidable manual P 133 0.1196 129 0.23 95
IV.T1299.HNN. 2020-10-31T17:37:40.32 0.1 undecidable manual S 343 0.018 169 -0.06 98
IV.RM33.EHZ. 2020-10-31T17:37:40.23 0.1 undecidable manual P 207 0.1205 129 0.23 96
IV.SMA1.EHZ. 2020-10-31T17:37:40.71 0.1 undecidable manual S 68 0.0369 160 0.14 100
IV.MTRA.EHZ. 2020-10-31T17:37:40.60 0.1 undecidable manual P 29 0.161 121 -0.12 97
IV.SMA1.EHZ. 2020-10-31T17:37:39.19 0.1 undecidable manual P 68 0.0369 160 0.32 95
IV.T1299.HNN. 2020-10-31T17:37:38.99 0.1 undecidable manual P 343 0.018 169 0.23 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:2.4 0.003945 0.12 AML other m 2020-10-31T17:37:41.40
IV.RM33.EHN. ML:2.1 0.001225 1.7 AML other m 2020-10-31T17:37:42.86
IV.RM33.HNN. ML:2.1 0.00125 1.7 AML other m 2020-10-31T17:37:42.86
IV.CAMP.HHE. ML:1.4 0.0002625 1.08 AML other m 2020-10-31T17:37:43.17
IV.RM33.HNE. ML:2 0.0010535 0.18 AML other m 2020-10-31T17:37:43.19
IV.RM33.EHE. ML:2 0.001007 0.18 AML other m 2020-10-31T17:37:43.19
IV.MTRA.EHN. ML:2 0.0007935 0.2 AML other m 2020-10-31T17:37:43.62
IV.MTRA.HNN. ML:2 0.0007615 0.2 AML other m 2020-10-31T17:37:43.62
IV.CAMP.HHN. ML:1.3 0.00022 1.78 AML other m 2020-10-31T17:37:43.08
IV.MTRA.EHE. ML:1.9 0.0006385 0.66 AML other m 2020-10-31T17:37:44.82
IV.MTRA.HNE. ML:1.9 0.000649 0.66 AML other m 2020-10-31T17:37:44.82
IV.LNSS.HHE. ML:1.6 0.0002675 0.14 AML other m 2020-10-31T17:37:45.57
IV.LNSS.HHN. ML:1.5 0.0002435 0.94 AML other m 2020-10-31T17:37:45.28
IV.NRCA.HHE. ML:2.2 0.000757 0.18 AML other m 2020-10-31T17:37:46.28
IV.TERO.HHN. ML:1.8 0.000362 0.68 AML other m 2020-10-31T17:37:46.39
IV.TERO.HHE. ML:1.7 0.000295 0.34 AML other m 2020-10-31T17:37:46.38
IV.NRCA.HHN. ML:1.8 0.000337 0.08 AML other m 2020-10-31T17:37:46.83
IV.ARRO.EHE. ML:1.3 6.705E-5 0.14 AML other m 2020-10-31T17:37:51.62
IV.ARRO.EHN. ML:1.4 7.38E-5 0.18 AML other m 2020-10-31T17:37:52.39
IV.FDMO.HHN. ML:1.2 4.175E-5 0.74 AML other m 2020-10-31T17:37:54.10
IV.FAGN.HHE. ML:1.8 0.000179 0.9 AML other m 2020-10-31T17:37:54.49
IV.CESI.HHE. ML:1.2 4.1751865E-5 0.128 AML other m 2020-10-31T17:37:54.67
IV.FAGN.HHN. ML:1.8 0.00019 0.24 AML other m 2020-10-31T17:37:54.70
IV.CSP1.EHE. ML:1.6 0.00010485 0.46 AML other m 2020-10-31T17:37:54.95
IV.FDMO.HHE. ML:1.2 4.23E-5 0.22 AML other m 2020-10-31T17:37:55.11
IV.CESI.HHN. ML:1.5 7.1E-5 1.58 AML other m 2020-10-31T17:37:55.98
IV.CSP1.EHN. ML:1.7 0.000112 0.58 AML other m 2020-10-31T17:37:56.62
IV.CESX.HHE. ML:1.4 5.835E-5 0.94 AML other m 2020-10-31T17:37:57.04
IV.CESX.HHN. ML:1.4 6.1E-5 0.3 AML other m 2020-10-31T17:37:57.05
IV.MOMA.HHE. ML:1.9 0.0001385 0.22 AML other m 2020-10-31T17:37:57.67
IV.T0110.HHE. ML:0 0.0001075 0.4 AML other m 2020-10-31T17:37:58.55
IV.MOMA.HHN. ML:1.6 8.23E-5 0.94 AML other m 2020-10-31T17:37:59.49
IV.T0110.HHN. ML:1.6 9.57E-5 0.28 AML other m 2020-10-31T17:37:59.81
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