Earthquake with magnitude of ML 0.4 on date 21-05-2020 and time 21:49:29 (UTC) in region 1 km S Fiordimonte (MC)

A magnitude ML 0.4 earthquake occured in region: 1 km S Fiordimonte (MC), on

  • 21-05-2020 21:49:29 (UTC)
  • 21-05-2020 23:49:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.03, 13.09 at 12 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
Fiordimonte MC 1 202 202
Pieve Torina MC 4 1458 1660
Pievebovigliana MC 4 866 2526
Fiastra MC 6 559 3085
Acquacanina MC 7 121 3206
Muccia MC 7 915 4121
Monte Cavallo MC 8 145 4266
Ussita MC 10 444 4710
Visso MC 11 1107 5817
Bolognola MC 12 142 5959
Camerino MC 12 6974 12933
Serravalle di Chienti MC 12 1070 14003
Castelsantangelo sul Nera MC 16 281 14284
Cessapalombo MC 17 512 14796
Caldarola MC 17 1823 16619
Preci PG 17 724 17343
Sarnano MC 17 3264 20607
Sefro MC 18 422 21029
Camporotondo di Fiastrone MC 18 563 21592
Serrapetrona MC 19 966 22558
Pioraco MC 19 1134 23692
Belforte del Chienti MC 19 1886 25578

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km E of Foligno (57155 inhabitants)
58 Km E of Perugia (166134 inhabitants)
63 Km NE of Terni (111501 inhabitants)
65 Km NW of Teramo (54892 inhabitants)
74 Km SW of Ancona (100861 inhabitants)
79 Km NW of L'Aquila (69753 inhabitants)
91 Km S of Fano (60888 inhabitants)
99 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 0.4 2020-05-21
21:49:29
43.03 13.09 12 2020-05-21
21:54:48
Sala Sismica INGV-Roma 79422351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-21 21:49:29 ± 0.1
Latitude 43.03 ± 0.01
Longitude 13.09 ± 0.01
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79422351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 578
Semi-minor axis of confidence ellipse (meter) 201
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 147
Circular confidence region, given by single value of horizontal uncertainty (meter) 580
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00899
Epicentral distance of station farthest from the epicenter (degree) 0.21494
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 79422351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-21 21:54:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2020-05-21T21:49:38.54 0.6 undecidable manual S 127 0.2149 93 0.07 48
IV.NRCA.HNZ. 2020-05-21T21:49:37.51 0.6 undecidable manual S 175 0.1952 94 -0.36 45
IV.CESI.HHZ. 2020-05-21T21:49:36.07 0.1 undecidable manual S 260 0.1385 101 -0.12 96
IV.CSP1.EHZ. 2020-05-21T21:49:35.44 0.1 undecidable manual S 52 0.1052 116 0.17 94
IV.MML1.HNZ. 2020-05-21T21:49:35.52 0.6 undecidable manual S 315 0.1223 108 -0.21 48
IV.PF6.EHZ. 2020-05-21T21:49:35.72 0.6 undecidable manual S 34 0.1331 103 -0.34 47
IV.MMO1.EHZ. 2020-05-21T21:49:34.74 0.1 undecidable manual P 127 0.2149 93 0.01 97
IV.NRCA.HNZ. 2020-05-21T21:49:34.27 0.1 undecidable manual P 175 0.1952 94 -0.12 95
IT.MTCL.HGZ. 2020-05-21T21:49:34.27 0.6 undecidable manual S 243 0.0746 132 -0.26 48
IV.FEMA.HNZ. 2020-05-21T21:49:34.66 0.6 undecidable manual S 205 0.0719 133 0.18 48
IV.PF6.EHZ. 2020-05-21T21:49:33.21 0.1 undecidable manual P 34 0.1331 103 -0.13 97
IV.FDMO.HHZ. 2020-05-21T21:49:33.31 0.3 undecidable manual S 343 0.009 174 -0.32 72
IV.FEMA.HNZ. 2020-05-21T21:49:33.31 0.1 undecidable manual P 205 0.0719 133 0.88 75
IV.CSP1.EHZ. 2020-05-21T21:49:33.06 0.1 undecidable manual P 52 0.1052 116 0.18 94
IV.MML1.HNZ. 2020-05-21T21:49:33.09 0.1 undecidable manual P 315 0.1223 108 -0.06 99
IV.CESI.HHZ. 2020-05-21T21:49:33.32 0.1 undecidable manual P 260 0.1385 101 -0.1 97
IV.MC2.EHZ. 2020-05-21T21:49:33.01 0.1 undecidable manual P 148 0.1367 102 -0.39 91
IT.MTCL.HGZ. 2020-05-21T21:49:32.97 0.1 undecidable manual P 243 0.0746 132 0.51 88
IV.FDMO.HHZ. 2020-05-21T21:49:31.91 0.1 undecidable manual P 343 0.009 174 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:0.7 7.369364E-5 0.1408 AML other m 2020-05-21T21:49:33.62
IV.FDMO.HHE. ML:0.7 7.580623E-5 0.0896 AML other m 2020-05-21T21:49:33.80
IV.CSP1.EHN. ML:0.3 2.04858825E-5 0.192 AML other m 2020-05-21T21:49:35.43
IV.CSP1.EHE. ML:0.4 2.9065215E-5 0.1152 AML other m 2020-05-21T21:49:35.58
IV.CESI.HHE. ML:0 1.0557677E-5 0.0768 AML other m 2020-05-21T21:49:36.28
IV.CESI.HHN. ML:0.4 2.0194775E-5 0.1024 AML other m 2020-05-21T21:49:36.16
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