Earthquake with magnitude of ML 0.9 on date 27-11-2020 and time 11:54:26 (Italy) in region 4 km E Arcevia (AN)

A magnitude ML 0.9 earthquake occured in region: 4 km E Arcevia (AN), on

  • 27-11-2020 10:54:26 (UTC)
  • 27-11-2020 11:54:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.49, 12.99 at 14 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
Arcevia AN 4 4612 4612
Mergo AN 5 1037 5649
Serra San Quirico AN 5 2850 8499
Rosora AN 7 1985 10484
Serra de' Conti AN 7 3746 14230
Genga AN 8 1797 16027
Montecarotto AN 8 1987 18014
Castelplanio AN 8 3540 21554
Poggio San Marcello AN 8 693 22247
Maiolati Spontini AN 11 6248 28495
Barbara AN 11 1368 29863
Cupramontana AN 12 4756 34619
Sassoferrato AN 12 7285 41904
Monte Roberto AN 12 3061 44965
Castelbellino AN 13 4947 49912
San Lorenzo in Campo PU 13 3414 53326
Castelleone di Suasa AN 13 1676 55002
Ostra Vetere AN 14 3311 58313
Poggio San Vicino MC 15 246 58559
Pergola PU 15 6333 64892
San Paolo di Jesi AN 16 933 65825
Apiro MC 16 2280 68105
Staffolo AN 17 2253 70358
Serra Sant'Abbondio PU 17 1027 71385
Fratte Rosa PU 17 966 72351
Belvedere Ostrense AN 18 2234 74585
Fabriano AN 18 31480 106065
Cerreto d'Esi AN 19 3817 109882
Corinaldo AN 19 4998 114880
Ostra AN 20 6875 121755

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km S of Fano (60888 inhabitants)
45 Km W of Ancona (100861 inhabitants)
47 Km S of Pesaro (94582 inhabitants)
63 Km NE of Foligno (57155 inhabitants)
64 Km NE of Perugia (166134 inhabitants)
72 Km SE of Rimini (147750 inhabitants)
89 Km E of Arezzo (99543 inhabitants)
94 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 0.9 2020-11-27
10:54:26
43.49 12.99 14 2020-11-27
11:00:17
Sala Sismica INGV-Roma 85048891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-27 10:54:26 ± 0.09
Latitude 43.49 ± 0.00
Longitude 12.99 ± 0.01
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 85048891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 385
Semi-minor axis of confidence ellipse (meter) 315
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 214
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) 201
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.08
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.21674
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:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 85048891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-27 11:00:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ATCC.EHZ. 2020-11-27T10:54:39.98 0.6 undecidable manual S -0.37 0.92
IV.FRON.EHZ. 2020-11-27T10:54:35.19 0.3 undecidable manual S 279 0.1916 106 0.11 75
IV.MPAG.EHZ. 2020-11-27T10:54:35.84 0.6 undecidable manual S 311 0.2167 103 0.04 50
IV.SSFR.HHZ. 2020-11-27T10:54:34.11 0.3 undecidable manual S 251 0.1574 112 -0.01 76
IV.EL6.EHZ. 2020-11-27T10:54:34.94 0.6 undecidable manual S 152 0.1799 108 0.19 49
IV.MPAG.EHZ. 2020-11-27T10:54:32.01 0.6 negative manual P 311 0.2167 103 -0.01 50
IV.FRON.EHZ. 2020-11-27T10:54:31.52 1.0 undecidable manual P 279 0.1916 106 -0.09 25
IV.EL6.EHZ. 2020-11-27T10:54:31.31 1.0 positive manual P 152 0.1799 108 -0.11 25
IV.ARVD.HHZ. 2020-11-27T10:54:31.54 0.6 undecidable manual S 286 0.0342 161 -0.01 52
IV.SSFR.HHZ. 2020-11-27T10:54:30.95 0.1 positive manual P 251 0.1574 112 -0.1 100
IV.ARVD.HHZ. 2020-11-27T10:54:29.57 0.3 undecidable manual P 286 0.0342 161 0 78
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARVD.HHN. ML:0.8 8.84E-5 0.54 AML other m 2020-11-27T10:54:31.89
IV.ARVD.HHE. ML:0.9 0.00011085 0.16 AML other m 2020-11-27T10:54:31.64
IV.SSFR.HHE. ML:1 6.875E-5 0.28 AML other m 2020-11-27T10:54:34.35
IV.SSFR.HHN. ML:0.9 6.675E-5 1.32 AML other m 2020-11-27T10:54:34.94
IV.FRON.EHE. ML:0.6 2.42E-5 0.38 AML other m 2020-11-27T10:54:35.26
IV.FRON.EHN. ML:0.8 4.285E-5 0.32 AML other m 2020-11-27T10:54:35.60
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