Earthquake with magnitude of ML 0.8 on date 30-10-2020 and time 10:05:55 (Italy) in region 4 km SW Acquacanina (MC)

A magnitude ML 0.8 earthquake occured in region: 4 km SW Acquacanina (MC), on

  • 30-10-2020 09:05:55 (UTC)
  • 30-10-2020 10:05:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43, 13.16 at 7 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
Acquacanina MC 4 121 121
Fiastra MC 4 559 680
Bolognola MC 6 142 822
Ussita MC 6 444 1266
Fiordimonte MC 7 202 1468
Pievebovigliana MC 9 866 2334
Visso MC 10 1107 3441
Pieve Torina MC 10 1458 4899
Castelsantangelo sul Nera MC 12 281 5180
Sarnano MC 12 3264 8444
Monte Cavallo MC 13 145 8589
Muccia MC 13 915 9504
Cessapalombo MC 15 512 10016
Montefortino FM 16 1178 11194
Amandola FM 16 3629 14823
Gualdo MC 16 815 15638
Caldarola MC 16 1823 17461
Preci PG 17 724 18185
Camerino MC 17 6974 25159
Camporotondo di Fiastrone MC 17 563 25722
Montemonaco AP 18 604 26326
San Ginesio MC 18 3498 29824
Serravalle di Chienti MC 19 1070 30894
Belforte del Chienti MC 20 1886 32780
Serrapetrona MC 20 966 33746

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
58 Km NW of Teramo (54892 inhabitants)
64 Km E of Perugia (166134 inhabitants)
64 Km NE of Terni (111501 inhabitants)
75 Km SW of Ancona (100861 inhabitants)
75 Km N of L'Aquila (69753 inhabitants)
95 Km S of Fano (60888 inhabitants)
97 Km NW of Montesilvano (53738 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 0.8 2020-10-30
09:05:55
43 13.16 7 2020-10-30
09:17:28
Sala Sismica INGV-Roma 84256881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-30 09:05:55 ± 0.12
Latitude 43.00 ± 0.00
Longitude 13.16 ± 0.00
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84256881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 384
Semi-minor axis of confidence ellipse (meter) 132
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 252
Circular confidence region, given by single value of horizontal uncertainty (meter) 380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 148
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.06475
Epicentral distance of station farthest from the epicenter (degree) 0.18706
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0
Num. used stations 2
Type of magnitude ML
Reference to an origin 84256881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-30 09:17:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MML1.HNZ. 2020-10-30T09:06:02.84 0.3 undecidable manual S 310 0.179 110 0.14 72
IV.CSP1.EHZ. 2020-10-30T09:05:59.88 0.1 undecidable manual S 19 0.0971 124 -0.02 100
IV.NRCA.HHE. 2020-10-30T09:05:59.41 0.3 undecidable manual P 192 0.1691 111 0 74
IV.CESI.HHZ. 2020-10-30T09:05:59.81 0.1 undecidable manual P 272 0.1871 109 0.04 98
IV.MC2.EHZ. 2020-10-30T09:05:59.68 0.1 undecidable manual S 167 0.0908 126 -0.01 100
IV.MML1.HNZ. 2020-10-30T09:05:59.54 0.1 undecidable manual P 310 0.179 110 -0.06 97
IV.CSP1.EHZ. 2020-10-30T09:05:58.07 0.1 undecidable manual P 19 0.0971 124 0.09 98
IV.FDMO.HHZ. 2020-10-30T09:05:58.99 0.1 undecidable manual S 305 0.0648 136 0.06 99
IV.MC2.EHZ. 2020-10-30T09:05:57.93 0.1 undecidable manual P 167 0.0908 126 0.07 99
IV.FDMO.HHZ. 2020-10-30T09:05:57.15 0.1 undecidable manual P 305 0.0648 136 -0.27 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHN. ML:0.8 8.08E-5 0.34 AML other m 2020-10-30T09:06:00.35
IV.CSP1.EHE. ML:0.8 8.33E-5 0.42 AML other m 2020-10-30T09:06:00.43
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