Earthquake with magnitude of ML 0.3 on date 16-08-2020 and time 02:42:50 (UTC) in region 8 km W Apecchio (PU)

A magnitude ML 0.3 earthquake occured in region: 8 km W Apecchio (PU), on

  • 16-08-2020 02:42:50 (UTC)
  • 16-08-2020 04:42:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.55, 12.32 at 10 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
Apecchio PU 8 1882 1882
San Giustino PG 11 11297 13179
Mercatello sul Metauro PU 11 1378 14557
CittĂ  di Castello PG 12 39913 54470
Borgo Pace PU 13 606 55076
Sansepolcro AR 14 15884 70960
Pietralunga PG 15 2111 73071
Sant'Angelo in Vado PU 15 4133 77204
Piobbico PU 16 2029 79233
Citerna PG 17 3531 82764
Monte Santa Maria Tiberina PG 17 1183 83947
Monterchi AR 18 1757 85704
Sestino AR 18 1355 87059
Belforte all'Isauro PU 20 769 87828

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Arezzo (99543 inhabitants)
49 Km N of Perugia (166134 inhabitants)
61 Km SW of Rimini (147750 inhabitants)
63 Km SW of Pesaro (94582 inhabitants)
66 Km SW of Fano (60888 inhabitants)
66 Km S of Cesena (96758 inhabitants)
73 Km NW of Foligno (57155 inhabitants)
78 Km S of Forlì (117913 inhabitants)
84 Km E of Siena (53903 inhabitants)
89 Km E of Firenze (382808 inhabitants)
89 Km SE of Faenza (58541 inhabitants)
94 Km E of Scandicci (50609 inhabitants)
97 Km W of Ancona (100861 inhabitants)
97 Km S of Ravenna (159116 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 0.3 2020-08-16
02:42:50
43.55 12.32 10 2020-08-16
05:14:01
Sala Sismica INGV-Roma 82032961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-16 02:42:50 ± 0.21
Latitude 43.55 ± 0.01
Longitude 12.32 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82032961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1038
Semi-minor axis of confidence ellipse (meter) 851
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 329
Circular confidence region, given by single value of horizontal uncertainty (meter) 1040
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 206
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.25811
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 82032961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-16 05:14:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LAV9.HHZ. 2020-08-16T02:44:00.44 3.0 undecidable manual Sn -4.48 0
IV.MNTT.EHZ. 2020-08-16T02:43:58.94 3.0 undecidable manual Sg 5.54 0
IV.AGLI.HHZ. 2020-08-16T02:43:58.57 3.0 undecidable manual Sn -1.25 0
IV.MTMR.EHZ. 2020-08-16T02:43:48.67 3.0 negative manual Pg 7.48 0
IV.ROSPO.HHZ. 2020-08-16T02:43:27.98 3.0 negative manual Pn -0.89 0
MN.TRI.HHZ. 2020-08-16T02:43:02.63 3.0 negative manual Pn -4.74 0
IV.ATFO.HHZ. 2020-08-16T02:43:00.67 0.6 undecidable manual S 134 0.2581 50 0.29 48
IV.ATVO.HHZ. 2020-08-16T02:42:57.75 0.6 undecidable manual S 159 0.1772 118 -0.07 51
IV.PIEI.HHZ. 2020-08-16T02:42:57.52 0.6 undecidable manual S 94 0.1583 120 0.35 48
IV.ATPI.EHZ. 2020-08-16T02:42:55.48 0.6 undecidable manual S 148 0.1142 129 -0.31 49
IV.ATFO.HHZ. 2020-08-16T02:42:55.81 0.1 undecidable manual P 134 0.2581 50 -0.23 97
IV.BADI.EHZ. 2020-08-16T02:42:54.59 0.6 undecidable manual S 235 0.0648 145 0.11 52
IV.ATVO.HHZ. 2020-08-16T02:42:54.77 0.6 negative manual P 159 0.1772 118 0.21 50
IV.PIEI.HHZ. 2020-08-16T02:42:54.51 1.0 negative manual P 94 0.1583 120 0.32 24
IV.MURB.HHZ. 2020-08-16T02:42:54.57 3.0 positive manual P -6.27 0
IV.ATPI.EHZ. 2020-08-16T02:42:53.51 1.0 undecidable manual P 148 0.1142 129 0.12 26
IV.BADI.EHZ. 2020-08-16T02:42:52.99 1.0 undecidable manual P 235 0.0648 145 0.36 25
IV.APEC.HHZ. 2020-08-16T02:42:52.51 0.1 undecidable manual P 81 0.0746 141 -0.25 100
IV.VARE.HHZ. 2020-08-16T02:42:47.56 3.0 positive manual P 6.77 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATFO.HHE. ML:0.3 1.07E-5 1.1 AML other m 2020-08-16T02:43:03.58
IV.APEC.HHE. ML:0.5 3.7900125E-5 0.1792 AML other m 2020-08-16T02:42:55.04
IV.APEC.HHN. ML:0.6 5.662759E-5 0.24 AML other m 2020-08-16T02:42:54.91
IV.BADI.EHN. ML:0.6 6.621353E-5 0.12 AML other m 2020-08-16T02:42:54.48
IV.BADI.EHE. ML:0.6 5.9433725E-5 0.2192 AML other m 2020-08-16T02:42:54.98
IV.ATPI.EHN. ML:0.2 1.4158615E-5 0.08 AML other m 2020-08-16T02:42:55.70
IV.ATPI.EHE. ML:0 1.1352295E-5 0.08 AML other m 2020-08-16T02:42:55.60
IV.PIEI.HHE. ML:-0.2 5.4611915E-6 0.0992 AML other m 2020-08-16T02:42:59.26
IV.PIEI.HHN. ML:-0.2 4.1686879E-6 0.0592 AML other m 2020-08-16T02:42:58.53
IV.ATVO.HHN. ML:0.1 1.01542325E-5 0.1008 AML other m 2020-08-16T02:42:58.24
IV.ATVO.HHE. ML:0.5 2.5063585E-5 0.1392 AML other m 2020-08-16T02:42:58.14
IV.ATFO.HHN. ML:0.3 8.284088E-6 3.24 AML other m 2020-08-16T02:43:02.58
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