Earthquake with magnitude of ML 0.9 on date 04-08-2020 and time 17:07:55 (Italy) in region 8 km SW Serravalle di Chienti (MC)

A magnitude ML 0.9 earthquake occured in region: 8 km SW Serravalle di Chienti (MC), on

  • 04-08-2020 15:07:55 (UTC)
  • 04-08-2020 17:07:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.03, 12.87 at 6 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
Serravalle di Chienti MC 8 1070 1070
Valtopina PG 10 1398 2468
Nocera Umbra PG 11 5839 8307
Monte Cavallo MC 12 145 8452
Sefro MC 15 422 8874
Pieve Torina MC 15 1458 10332
Muccia MC 16 915 11247
Foligno PG 16 57155 68402
Spello PG 16 8645 77047
Sellano PG 16 1079 78126
Pievebovigliana MC 18 866 78992
Fiordimonte MC 18 202 79194
Fiuminata MC 18 1402 80596
Pioraco MC 19 1134 81730
Trevi PG 20 8469 90199

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km NE of Foligno (57155 inhabitants)
40 Km E of Perugia (166134 inhabitants)
55 Km NE of Terni (111501 inhabitants)
80 Km NW of Teramo (54892 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
87 Km NW of L'Aquila (69753 inhabitants)
91 Km S of Fano (60888 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
93 Km SE of Arezzo (99543 inhabitants)
98 Km S of Pesaro (94582 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 0.9 2020-08-04
15:07:55
43.03 12.87 6 2020-08-04
15:27:52
Sala Sismica INGV-Roma 81644681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-04 15:07:55 ± 0.09
Latitude 43.03 ± 0.00
Longitude 12.87 ± 0.00
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81644681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 422
Semi-minor axis of confidence ellipse (meter) 177
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 359
Circular confidence region, given by single value of horizontal uncertainty (meter) 420
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
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) 0.03777
Epicentral distance of station farthest from the epicenter (degree) 0.49732
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:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 81644681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-04 15:27:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-08-04T15:08:08.79 0.3 undecidable manual S 30 0.3435 99 0.07 71
IV.MOMA.HHN. 2020-08-04T15:08:07.87 0.3 undecidable manual S 224 0.3139 100 0.28 68
IV.MC2.EHZ. 2020-08-04T15:08:06.23 0.6 undecidable manual S 117 0.2635 102 0.56 43
IV.FRON.EHZ. 2020-08-04T15:08:05.68 0.1 undecidable manual P 348 0.4973 50 -0.19 89
IV.NRCA.HNE. 2020-08-04T15:08:05.56 0.6 undecidable manual S 137 0.2671 102 -0.25 46
IV.CSP1.EHZ. 2020-08-04T15:08:05.35 0.3 undecidable manual S 76 0.2536 102 0.05 72
IV.ATCC.EHZ. 2020-08-04T15:08:04.60 0.6 undecidable manual S 313 0.2266 104 0.31 46
IV.MOMA.HHN. 2020-08-04T15:08:02.51 0.6 undecidable manual P 224 0.3139 100 0.12 47
IV.EL6.EHZ. 2020-08-04T15:08:02.46 0.1 undecidable manual P 30 0.3435 99 -0.58 83
IV.FDMO.HHZ. 2020-08-04T15:08:02.06 0.1 undecidable manual S 88 0.161 109 0.21 95
IV.MC2.EHZ. 2020-08-04T15:08:01.42 0.3 undecidable manual P 117 0.2635 102 0.13 71
IV.CSP1.EHZ. 2020-08-04T15:08:01.44 0.1 undecidable manual P 76 0.2536 102 0.36 90
IV.ASSB.HHZ. 2020-08-04T15:08:01.72 0.6 undecidable manual S 275 0.1529 110 0.15 48
IV.MML1.EHZ. 2020-08-04T15:08:00.23 0.1 undecidable manual S 43 0.1124 116 0.1 98
IV.NRCA.HNE. 2020-08-04T15:08:00.81 0.3 undecidable manual P 137 0.2671 102 -0.56 64
IV.ATCC.EHZ. 2020-08-04T15:08:00.40 0.1 undecidable manual P 313 0.2266 104 -0.09 96
IV.FDMO.HHZ. 2020-08-04T15:07:59.15 0.1 undecidable manual P 88 0.161 109 0.07 98
IV.ASSB.HHZ. 2020-08-04T15:07:58.95 0.1 negative manual P 275 0.1529 110 0.03 99
IV.MML1.EHZ. 2020-08-04T15:07:58.09 0.1 undecidable manual P 43 0.1124 116 0 100
IV.CESI.HHZ. 2020-08-04T15:07:57.58 0.1 undecidable manual S 133 0.0378 146 -0.29 96
IV.CESI.HHZ. 2020-08-04T15:07:56.69 0.1 undecidable manual P 133 0.0378 146 -0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0 0.00040301975 0.3968 AML other m 2020-08-04T15:07:58.92
IV.CESI.HHN. ML:0 0.0002299207 0.2816 AML other m 2020-08-04T15:07:59.63
IV.CESI.HNE. ML:0 0.0003923182 0.4096 AML other m 2020-08-04T15:07:58.72
IV.CESI.HNN. ML:0 0.00019946243 0.2432 AML other m 2020-08-04T15:07:59.76
IV.ASSB.HHE. ML:1 9.3111945E-5 0.32 AML other m 2020-08-04T15:08:01.83
IV.ASSB.HHN. ML:1 8.330803E-5 0.2304 AML other m 2020-08-04T15:08:01.95
IV.FDMO.HHE. ML:0.8 5.444512E-5 0.1664 AML other m 2020-08-04T15:08:02.25
IV.FDMO.HHN. ML:0.7 4.5865215E-5 0.4992 AML other m 2020-08-04T15:08:03.26
IV.EL6.EHE. ML:1.2 5.561415E-5 0.32 AML other m 2020-08-04T15:08:09.08
IV.EL6.EHN. ML:1 3.9660855E-5 0.4224 AML other m 2020-08-04T15:08:11.49
IV.FRON.EHN. ML:0.8 1.54059145E-5 0.2432 AML other m 2020-08-04T15:08:14.85
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