Earthquake with magnitude of ML 1.0 on date 05-04-2020 and time 16:50:20 (UTC) in region 4 km E Accumoli (RI)

A magnitude ML 1.0 earthquake occured in region: 4 km E Accumoli (RI), on

  • 05-04-2020 16:50:20 (UTC)
  • 05-04-2020 18:50:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.68, 13.3 at 12 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
Accumoli RI 4 667 667
Amatrice RI 6 2657 3324
Arquata del Tronto AP 10 1178 4502
Acquasanta Terme AP 13 2916 7418
Cittareale RI 13 482 7900
Campotosto AQ 15 542 8442
Valle Castellana TE 17 977 9419
Montegallo AP 18 523 9942
Capitignano AQ 18 665 10607
Montereale AQ 18 2581 13188
Cortino TE 19 656 13844
Rocca Santa Maria TE 19 537 14381

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km W of Teramo (54892 inhabitants)
38 Km N of L'Aquila (69753 inhabitants)
55 Km E of Terni (111501 inhabitants)
57 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 SE of Perugia (166134 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km NE of Tivoli (56533 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 1.0 2020-04-05
16:50:20
42.68 13.3 12 2020-04-05
17:14:11
Sala Sismica INGV-Roma 77924571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-05 16:50:20 ± 0.07
Latitude 42.68 ± 0.00
Longitude 13.30 ± 0.00
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77924571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 410
Semi-minor axis of confidence ellipse (meter) 121
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 6
Circular confidence region, given by single value of horizontal uncertainty (meter) 410
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.05126
Epicentral distance of station farthest from the epicenter (degree) 0.30667
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 77924571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-05 17:14:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-04-05T16:50:29.41 0.6 undecidable manual S 105 0.2329 96 -0.24 64
IV.NRCA.HHZ. 2020-04-05T16:50:28.42 0.6 undecidable manual S 318 0.2014 98 -0.28 64
IV.LNSS.HHZ. 2020-04-05T16:50:28.71 0.6 undecidable manual S 247 0.2059 97 -0.14 66
IV.CAMP.HHZ. 2020-04-05T16:50:27.66 0.6 undecidable manual S 151 0.1691 102 -0.12 67
IV.MC2.EHZ. 2020-04-05T16:50:26.00 1.0 undecidable manual P 341 0.241 95 0.19 32
IV.GIGS.HHZ. 2020-04-05T16:50:26.99 0.6 undecidable manual P 139 0.3067 94 0.05 66
IV.LNSS.HHZ. 2020-04-05T16:50:25.28 0.6 negative manual P 247 0.2059 97 0.06 67
IV.MTRA.EHZ. 2020-04-05T16:50:25.79 0.6 undecidable manual S 45 0.1025 123 -0.14 66
IV.TERO.HHZ. 2020-04-05T16:50:25.64 0.6 undecidable manual P 105 0.2329 96 -0.04 67
IV.NRCA.HHZ. 2020-04-05T16:50:25.13 0.6 undecidable manual P 318 0.2014 98 -0.01 67
IV.T1299.HNZ. 2020-04-05T16:50:24.82 0.6 undecidable manual S 193 0.0513 148 -0.05 69
IV.CAMP.HHZ. 2020-04-05T16:50:24.71 0.6 undecidable manual P 151 0.1691 102 0.11 66
IV.SMA1.EHZ. 2020-04-05T16:50:24.89 0.6 undecidable manual S 153 0.0603 143 -0.13 68
IV.SMA1.EHZ. 2020-04-05T16:50:23.18 0.6 undecidable manual P 153 0.0603 143 0.17 67
IV.T1299.HNZ. 2020-04-05T16:50:23.14 0.3 undecidable manual P 193 0.0513 148 0.21 100
IV.MTRA.EHZ. 2020-04-05T16:50:23.75 0.3 undecidable manual P 45 0.1025 123 0.21 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:1.2 0.000147218755 0.1792 AML other m 2020-04-05T16:50:26.14
IV.MTRA.EHN. ML:1.2 0.00018546875 0.1792 AML other m 2020-04-05T16:50:26.12
IV.MTRA.HNE. ML:1.2 0.0001667011 0.32 AML other m 2020-04-05T16:50:26.30
IV.MTRA.HNN. ML:1.2 0.00016802917 0.192 AML other m 2020-04-05T16:50:26.11
IV.NRCA.HHE. ML:1 6.2933465E-5 0.1408 AML other m 2020-04-05T16:50:29.22
IV.NRCA.HHN. ML:0.8 3.859235E-5 0.0512 AML other m 2020-04-05T16:50:28.88
IV.NRCA.HNE. ML:1.1 7.400899E-5 0.3712 AML other m 2020-04-05T16:50:28.63
IV.NRCA.HNN. ML:1.3 0.000124610615 0.6912 AML other m 2020-04-05T16:50:28.54
IV.LNSS.HHE. ML:0.7 3.2064565E-5 0.128 AML other m 2020-04-05T16:50:29.50
IV.LNSS.HHN. ML:0.8 3.661921E-5 0.1408 AML other m 2020-04-05T16:50:29.08
IV.LNSS.HNE. ML:0.8 3.6168465E-5 0.9984 AML other m 2020-04-05T16:50:28.70
IV.LNSS.HNN. ML:1.3 0.000112733135 1.0624 AML other m 2020-04-05T16:50:28.87
IV.TERO.HHE. ML:0.7 2.813686E-5 0.1536 AML other m 2020-04-05T16:50:29.61
IV.TERO.HHN. ML:0.7 3.053482E-5 0.1664 AML other m 2020-04-05T16:50:30.26
IV.TERO.HNE. ML:1.2 9.0090005E-5 0.4608 AML other m 2020-04-05T16:50:29.63
IV.TERO.HNN. ML:0.7 3.1870451E-5 0.3328 AML other m 2020-04-05T16:50:29.44
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