Earthquake with magnitude of ML 0.8 on date 08-04-2020 and time 04:46:06 (Italy) in region 4 km N Amatrice (RI)

A magnitude ML 0.8 earthquake occured in region: 4 km N Amatrice (RI), on

  • 08-04-2020 02:46:06 (UTC)
  • 08-04-2020 04:46:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.67, 13.3 at 13 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 4 2657 2657
Accumoli RI 5 667 3324
Arquata del Tronto AP 12 1178 4502
Cittareale RI 12 482 4984
Campotosto AQ 14 542 5526
Acquasanta Terme AP 15 2916 8442
Montereale AQ 16 2581 11023
Capitignano AQ 16 665 11688
Cortino TE 18 656 12344
Valle Castellana TE 18 977 13321
Rocca Santa Maria TE 19 537 13858
Montegallo AP 20 523 14381

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km W of Teramo (54892 inhabitants)
36 Km N of L'Aquila (69753 inhabitants)
54 Km E of Terni (111501 inhabitants)
58 Km SE of Foligno (57155 inhabitants)
72 Km W of Montesilvano (53738 inhabitants)
79 Km W of Pescara (121014 inhabitants)
80 Km W of Chieti (51815 inhabitants)
88 Km NE of Guidonia Montecelio (88673 inhabitants)
88 Km NE of Tivoli (56533 inhabitants)
89 Km SE of Perugia (166134 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
Rev 100 ML 0.8 2020-04-08
02:46:06
42.67 13.3 13 2020-04-08
03:01:24
Sala Sismica INGV-Roma 78002021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-08 02:46:06 ± 0.07
Latitude 42.67 ± 0.00
Longitude 13.30 ± 0.01
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 78002021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 448
Semi-minor axis of confidence ellipse (meter) 160
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 82
Circular confidence region, given by single value of horizontal uncertainty (meter) 450
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.23203
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 78002021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-08 03:01:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MURB.HHZ. 2020-04-08T02:46:33.43 3.0 undecidable manual S -0.06 0
IV.MMO1.EHZ. 2020-04-08T02:46:16.10 0.6 undecidable manual S 6 0.232 99 0.05 50
IV.NRCA.HHZ. 2020-04-08T02:46:15.34 0.3 undecidable manual S 321 0.2122 101 -0.12 74
IV.TERO.HHZ. 2020-04-08T02:46:15.77 0.3 undecidable manual S 101 0.2311 99 -0.26 72
IV.RM33.EHZ. 2020-04-08T02:46:14.04 0.3 undecidable manual S 201 0.17 106 -0.2 73
IV.MMO1.EHZ. 2020-04-08T02:46:12.15 0.1 undecidable manual P 6 0.232 99 0.06 100
IV.MTRA.EHZ. 2020-04-08T02:46:12.60 0.3 undecidable manual S 40 0.116 122 -0.17 75
IV.TERO.HHZ. 2020-04-08T02:46:12.11 0.1 undecidable manual P 101 0.2311 99 0.04 100
IV.RM33.EHZ. 2020-04-08T02:46:11.22 0.1 undecidable manual P 201 0.17 106 0.17 99
IV.SMA1.EHZ. 2020-04-08T02:46:11.25 0.3 undecidable manual S 142 0.0477 152 -0.14 76
IV.NRCA.HHZ. 2020-04-08T02:46:11.69 0.1 undecidable manual P 321 0.2122 101 -0.06 100
IV.MTRA.EHZ. 2020-04-08T02:46:10.35 0.1 undecidable manual P 40 0.116 122 0.16 100
IV.SMA1.EHZ. 2020-04-08T02:46:09.68 0.1 undecidable manual P 142 0.0477 152 0.28 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.1 0.0001485 0.1 AML other m 2020-04-08T02:46:11.56
IV.SMA1.EHN. ML:1 0.000114 0.12 AML other m 2020-04-08T02:46:11.66
IV.MTRA.EHN. ML:0.7 4.945E-5 0.54 AML other m 2020-04-08T02:46:12.99
IV.MTRA.EHE. ML:0.7 4.585E-5 1.24 AML other m 2020-04-08T02:46:13.64
IV.RM33.EHN. ML:0.8 3.91E-5 0.3 AML other m 2020-04-08T02:46:14.36
IV.RM33.EHE. ML:0.7 3.52E-5 0.74 AML other m 2020-04-08T02:46:15.52
IV.NRCA.HHE. ML:0.9 5.115E-5 0.08 AML other m 2020-04-08T02:46:15.67
IV.TERO.HHN. ML:0.9 4.41E-5 1.92 AML other m 2020-04-08T02:46:15.98
IV.TERO.HHE. ML:0.9 4.24E-5 0.36 AML other m 2020-04-08T02:46:16.02
IV.NRCA.HHN. ML:0.7 3.015E-5 0.44 AML other m 2020-04-08T02:46:16.46
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