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) 42.624, 13.289 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
Capitignano AQ 12 665 5013
Montereale AQ 12 2581 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
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
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
42.6238 13.2887 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 42.6238 ± 0.0054
Longitude 13.2887 ± 0.0061
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.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.TERO.HHZ. 2020-10-31T17:07:45.05 0.1 undecidable manual P 90 0.232 90 -0.05 98
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.T1299.HNZ. 2020-10-31T17:07:43.46 0.3 undecidable manual S 336 0.0117 172 -0.14 77
IV.CAMP.HHZ. 2020-10-31T17:07:43.39 0.1 undecidable manual P 135 0.125 96 0.12 99
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
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