Earthquake with magnitude of ML 1.3 on date 31-10-2020 and time 18:07:39 (Italy) in region 1 km S Amatrice (RI)

A magnitude ML 1.3 earthquake occured in region: 1 km S Amatrice (RI), on

  • 31-10-2020 17:07:39 (UTC)
  • 31-10-2020 18:07:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.62, 13.29 at 11 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.

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 1 2657 2657
Accumoli RI 9 667 3324
Campotosto AQ 10 542 3866
Cittareale RI 11 482 4348
Montereale AQ 12 2581 6929
Capitignano AQ 12 665 7594
Arquata del Tronto AP 17 1178 8772
Borbona RI 18 617 9389
Crognaleto TE 18 1297 10686
Cortino TE 18 656 11342
Cagnano Amiterno AQ 19 1369 12711
Barete AQ 19 737 13448
Acquasanta Terme AP 19 2916 16364
Posta RI 19 694 17058

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km N of L'Aquila (69753 inhabitants)
34 Km W of Teramo (54892 inhabitants)
53 Km E of Terni (111501 inhabitants)
60 Km SE of Foligno (57155 inhabitants)
72 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)
84 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
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.3 2020-10-31
17:07:39
42.62 13.29 11 2020-10-31
17:17:28
Sala Sismica INGV-Roma 84326741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-31 17:07:39 ± 0.07
Latitude 42.62 ± 0.01
Longitude 13.29 ± 0.01
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84326741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 612
Semi-minor axis of confidence ellipse (meter) 538
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 175
Circular confidence region, given by single value of horizontal uncertainty (meter) 610
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
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) 0.01169
Epicentral distance of station farthest from the epicenter (degree) 0.47124
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 84326741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-31 17:17:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GAVE.EHZ. 2020-10-31T17:07:50.79 0.3 undecidable manual S 283 0.2977 90 -0.2 71
IV.CSP1.EHZ. 2020-10-31T17:07:50.33 0.6 negative manual P 353 0.4712 90 1.13 34
IV.NRCA.HHZ. 2020-10-31T17:07:49.14 0.6 undecidable manual S 329 0.2455 90 -0.3 46
IV.TERO.HHZ. 2020-10-31T17:07:48.79 0.3 undecidable manual S 90 0.232 90 -0.25 70
IV.MMO1.HNZ. 2020-10-31T17:07:46.45 0.6 undecidable manual P 6 0.277 90 0.59 45
IV.GAVE.EHZ. 2020-10-31T17:07:46.11 0.3 positive manual P 283 0.2977 90 -0.11 72
IV.MTRA.EHZ. 2020-10-31T17:07:46.41 0.6 undecidable manual S 31 0.1547 91 -0.34 46
IV.TERO.HHZ. 2020-10-31T17:07:45.05 0.1 undecidable manual P 90 0.232 90 -0.05 98
IV.CAMP.HHZ. 2020-10-31T17:07:45.84 0.3 undecidable manual S 135 0.125 96 -0.03 76
IV.NRCA.HHZ. 2020-10-31T17:07:45.24 0.1 undecidable manual P 329 0.2455 90 -0.09 97
IV.RM33.EHZ. 2020-10-31T17:07:45.76 0.6 undecidable manual S 205 0.1268 95 -0.17 50
IV.LNSS.HHZ. 2020-10-31T17:07:44.24 0.1 undecidable manual P 264 0.1835 91 -0.04 100
IV.MTRA.EHZ. 2020-10-31T17:07:43.79 0.3 undecidable manual P 31 0.1547 91 0.01 75
IV.CAMP.HHZ. 2020-10-31T17:07:43.39 0.1 undecidable manual P 135 0.125 96 0.12 99
IV.T1299.HNZ. 2020-10-31T17:07:43.46 0.3 undecidable manual S 336 0.0117 172 -0.14 77
IV.RM33.EHZ. 2020-10-31T17:07:43.44 0.1 positive manual P 205 0.1268 95 0.14 98
IV.T1299.HNZ. 2020-10-31T17:07:42.15 0.1 undecidable manual P 336 0.0117 172 0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAMP.HHE. ML:0.7 4.317782E-5 0.2176 AML other m 2020-10-31T17:07:46.33
IV.CAMP.HHN. ML:0.7 4.9205955E-5 0.2176 AML other m 2020-10-31T17:07:47.14
IV.RM33.HNE. ML:1.4 0.00026969435 0.192 AML other m 2020-10-31T17:07:46.35
IV.RM33.HNN. ML:1.5 0.00031795175 0.128 AML other m 2020-10-31T17:07:46.23
IV.RM33.EHE. ML:1.4 0.00022529335 0.1792 AML other m 2020-10-31T17:07:46.35
IV.RM33.EHN. ML:1.5 0.0002991615 0.1152 AML other m 2020-10-31T17:07:46.23
IV.MTRA.HNE. ML:1.2 0.000113874075 0.256 AML other m 2020-10-31T17:07:47.65
IV.MTRA.HNN. ML:1.3 0.0001689261 0.2048 AML other m 2020-10-31T17:07:46.78
IV.MTRA.EHE. ML:1.2 0.0001281631 0.1792 AML other m 2020-10-31T17:07:46.98
IV.MTRA.EHN. ML:1.3 0.0001679656 0.2048 AML other m 2020-10-31T17:07:46.78
IV.LNSS.HHE. ML:0.9 5.9192945E-5 0.1408 AML other m 2020-10-31T17:07:48.66
IV.LNSS.HHN. ML:0.9 5.303017E-5 0.2304 AML other m 2020-10-31T17:07:49.73
IV.TERO.HHE. ML:1.1 6.5154865E-5 0.1024 AML other m 2020-10-31T17:07:50.95
IV.TERO.HHN. ML:1.1 7.1985345E-5 0.1152 AML other m 2020-10-31T17:07:48.89
IV.TERO.HNE. ML:1.2 9.856722E-5 0.1152 AML other m 2020-10-31T17:07:50.96
IV.TERO.HNN. ML:1.3 0.00010748348 0.8704 AML other m 2020-10-31T17:07:57.18
IV.NRCA.HNE. ML:1.5 0.00016473465 0.1792 AML other m 2020-10-31T17:07:49.54
IV.NRCA.HNN. ML:1.6 0.000229847265 4.9408 AML other m 2020-10-31T17:07:54.96
IV.NRCA.HHE. ML:1.5 0.0001694728 0.1792 AML other m 2020-10-31T17:07:49.45
IV.NRCA.HHN. ML:1.2 7.62094E-5 0.1024 AML other m 2020-10-31T17:07:49.00
IV.GAVE.HNE. ML:1.4 9.7376185E-5 0.1408 AML other m 2020-10-31T17:07:51.35
IV.GAVE.HNN. ML:1.7 0.0002102563 2.752 AML other m 2020-10-31T17:07:52.54
IV.GAVE.EHE. ML:1.4 0.00010370309 0.1408 AML other m 2020-10-31T17:07:51.28
IV.GAVE.EHN. ML:1.2 6.1522505E-5 0.1408 AML other m 2020-10-31T17:07:51.62
IV.CSP1.EHE. ML:0.9 1.966691E-5 0.256 AML other m 2020-10-31T17:08:02.14
IV.CSP1.EHN. ML:1.1 2.7926815E-5 0.2048 AML other m 2020-10-31T17:07:57.84
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download