Earthquake with magnitude of ML 0.2 on date 16-08-2020 and time 03:58:18 (Italy) in region 4 km S Sassoferrato (AN)

A magnitude ML 0.2 earthquake occured in region: 4 km S Sassoferrato (AN), on

  • 16-08-2020 01:58:18 (UTC)
  • 16-08-2020 03:58:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4, 12.86 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
Sassoferrato AN 4 7285 7285
Genga AN 7 1797 9082
Fabriano AN 8 31480 40562
Sigillo PG 12 2404 42966
Serra Sant'Abbondio PU 12 1027 43993
Costacciaro PG 12 1216 45209
Arcevia AN 13 4612 49821
Cerreto d'Esi AN 14 3817 53638
Serra San Quirico AN 14 2850 56488
Fossato di Vico PG 14 2840 59328
Scheggia e Pascelupo PG 15 1393 60721
Frontone PU 16 1300 62021
Mergo AN 17 1037 63058
Esanatoglia MC 18 2034 65092
Pergola PU 18 6333 71425
Poggio San Vicino MC 18 246 71671
Rosora AN 20 1985 73656
Gualdo Tadino PG 20 15208 88864

Municipalities with at least 50000 inhabitants

An earthquake occurred to
50 Km NE of Perugia (166134 inhabitants)
51 Km N of Foligno (57155 inhabitants)
51 Km S of Fano (60888 inhabitants)
57 Km S of Pesaro (94582 inhabitants)
59 Km W of Ancona (100861 inhabitants)
77 Km SE of Rimini (147750 inhabitants)
79 Km E of Arezzo (99543 inhabitants)
95 Km N of Terni (111501 inhabitants)
96 Km SE of Cesena (96758 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 0.2 2020-08-16
01:58:18
43.4 12.86 11 2020-08-16
02:03:09
Sala Sismica INGV-Roma 82027871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-16 01:58:18 ± 0.04
Latitude 43.40 ± 0.00
Longitude 12.86 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82027871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 315
Semi-minor axis of confidence ellipse (meter) 238
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 52
Circular confidence region, given by single value of horizontal uncertainty (meter) 320
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 79
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.06385
Epicentral distance of station farthest from the epicenter (degree) 0.28958
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.2

Field Value
Value 0.2
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 82027871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-16 02:03:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NARO.HHZ. 2020-08-16T01:58:29.38 0.6 undecidable manual S 316 0.2896 50 0.23 47
IV.PIEI.HHZ. 2020-08-16T01:58:28.25 0.6 undecidable manual S 300 0.2689 50 -0.29 46
IV.ATCC.EHZ. 2020-08-16T01:58:28.80 0.6 undecidable manual S 216 0.2671 50 0.32 46
IV.EL6.EHZ. 2020-08-16T01:58:26.24 0.6 undecidable manual S 112 0.1925 50 -0.03 49
IV.ATFO.HHZ. 2020-08-16T01:58:26.77 0.6 undecidable manual S 261 0.2095 50 -0.01 50
IV.NARO.HHZ. 2020-08-16T01:58:24.32 0.1 undecidable manual P 316 0.2896 50 -0.13 95
IV.ATSC.EHN. 2020-08-16T01:58:24.01 0.6 undecidable manual S 281 0.125 128 -0.13 49
IV.FOSV.EHZ. 2020-08-16T01:58:24.01 0.6 undecidable manual S 213 0.1268 127 -0.17 49
IV.FRON.EHZ. 2020-08-16T01:58:24.74 0.3 undecidable manual S 321 0.1502 123 -0.18 73
IV.SNTG.HHZ. 2020-08-16T01:58:24.96 0.3 undecidable manual S 157 0.1583 121 -0.24 72
IV.ATCC.EHZ. 2020-08-16T01:58:24.03 0.1 undecidable manual P 216 0.2671 50 -0.04 97
IV.ATFO.HHZ. 2020-08-16T01:58:23.14 0.3 positive manual P 261 0.2095 50 0.05 74
IV.PIEI.HHZ. 2020-08-16T01:58:23.96 0.6 negative manual P 300 0.2689 50 -0.14 48
IV.ARVD.HHZ. 2020-08-16T01:58:23.74 0.6 undecidable manual S 33 0.1151 130 -0.09 50
IV.SNTG.HHZ. 2020-08-16T01:58:22.39 0.3 undecidable manual P 157 0.1583 121 0.22 72
IV.EL6.EHZ. 2020-08-16T01:58:22.73 0.3 undecidable manual P 112 0.1925 50 -0.06 74
IV.FRON.EHZ. 2020-08-16T01:58:22.08 1.0 undecidable manual P 321 0.1502 123 0.07 25
IV.SSFR.HHN. 2020-08-16T01:58:22.56 0.6 undecidable manual S 303 0.0639 147 0.05 51
IV.ARVD.HHZ. 2020-08-16T01:58:21.49 0.1 undecidable manual P 33 0.1151 130 0.1 99
IV.FOSV.EHZ. 2020-08-16T01:58:21.55 0.1 undecidable manual P 213 0.1268 127 -0.04 100
IV.ATSC.EHN. 2020-08-16T01:58:21.69 0.1 undecidable manual P 281 0.125 128 0.13 98
IV.SSFR.HHN. 2020-08-16T01:58:20.88 0.1 undecidable manual P 303 0.0639 147 0.25 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FOSV.EHE. ML:0.2 1.4385E-5 0.56 AML other m 2020-08-16T01:58:24.08
IV.FOSV.EHN. ML:0.2 1.275E-5 0.3 AML other m 2020-08-16T01:58:24.36
IV.FRON.EHE. ML:0.1 9.84E-6 1.74 AML other m 2020-08-16T01:58:24.95
IV.SNTG.HHN. ML:0.3 1.33E-5 0.62 AML other m 2020-08-16T01:58:25.91
IV.SNTG.HHE. ML:0.1 1.094E-5 0.38 AML other m 2020-08-16T01:58:26.30
IV.FRON.EHN. ML:0.2 1.715E-5 1.38 AML other m 2020-08-16T01:58:26.89
IV.PIEI.HHN. ML:0.3 9.725E-6 0.08 AML other m 2020-08-16T01:58:28.55
IV.PIEI.HHE. ML:0.6 2.225E-5 0.08 AML other m 2020-08-16T01:58:28.64
IV.ATCC.EHN. ML:0.7 2.47E-5 1.88 AML other m 2020-08-16T01:58:28.00
IV.ATCC.EHE. ML:0.9 3.26E-5 0.1 AML other m 2020-08-16T01:58:29.06
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