Earthquake with magnitude of ML 0.3 on date 21-09-2020 and time 06:12:55 (Italy) in region 4 km SW Fiastra (MC)

A magnitude ML 0.3 earthquake occured in region: 4 km SW Fiastra (MC), on

  • 21-09-2020 04:12:55 (UTC)
  • 21-09-2020 06:12:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43, 13.13 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
Fiastra MC 4 559 559
Acquacanina MC 5 121 680
Fiordimonte MC 5 202 882
Ussita MC 7 444 1326
Pievebovigliana MC 7 866 2192
Pieve Torina MC 8 1458 3650
Bolognola MC 8 142 3792
Visso MC 9 1107 4899
Monte Cavallo MC 10 145 5044
Muccia MC 11 915 5959
Castelsantangelo sul Nera MC 12 281 6240
Sarnano MC 15 3264 9504
Camerino MC 15 6974 16478
Preci PG 16 724 17202
Cessapalombo MC 16 512 17714
Serravalle di Chienti MC 16 1070 18784
Caldarola MC 17 1823 20607
Camporotondo di Fiastrone MC 18 563 21170
Gualdo MC 19 815 21985
Montefortino FM 19 1178 23163
Amandola FM 19 3629 26792
San Ginesio MC 19 3498 30290
Serrapetrona MC 20 966 31256
Montemonaco AP 20 604 31860
Belforte del Chienti MC 20 1886 33746

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Foligno (57155 inhabitants)
61 Km NW of Teramo (54892 inhabitants)
61 Km E of Perugia (166134 inhabitants)
63 Km NE of Terni (111501 inhabitants)
75 Km SW of Ancona (100861 inhabitants)
76 Km NW of L'Aquila (69753 inhabitants)
94 Km S of Fano (60888 inhabitants)
100 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 0.3 2020-09-21
04:12:55
43 13.13 6 2020-09-21
04:32:53
Sala Sismica INGV-Roma 83088331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-21 04:12:55 ± 0.17
Latitude 43.00 ± 0.00
Longitude 13.13 ± 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 83088331

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 380
Semi-minor axis of confidence ellipse (meter) 189
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 44
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) 109
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.17897
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 83088331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-21 04:32:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MGR.HNZ. 2020-09-21T04:14:40.81 3.0 undecidable manual Sg 11.31 0
SI.BOSI.HHZ. 2020-09-21T04:14:37.72 3.0 undecidable manual Sg 3.73 0
IV.CMPR.HHZ. 2020-09-21T04:14:26.36 3.0 undecidable manual Sg 3.16 0
IV.FREG.EHZ. 2020-09-21T04:14:22.34 3.0 undecidable manual Sg 3.43 0
OT.OT13.EHZ. 2020-09-21T04:14:15.95 3.0 undecidable manual Sg 5.23 0
GU.GORR.HHZ. 2020-09-21T04:14:12.67 3.0 undecidable manual Sn -5.05 0
IV.VULT.HHZ. 2020-09-21T04:14:09.54 3.0 undecidable manual Sn -5.49 0
IV.PLLN.EHZ. 2020-09-21T04:14:09.38 3.0 positive manual Pn 1.55 0
CH.PLONS.HHZ. 2020-09-21T04:14:02.95 3.0 undecidable manual Pn -0.49 0
IV.CAVE.HHZ. 2020-09-21T04:13:57.94 3.0 undecidable manual Sg -2.21 0
IV.EUCT.HNZ. 2020-09-21T04:13:50.76 3.0 negative manual Pg 5.04 0
IV.ROSPO.HHZ. 2020-09-21T04:13:42.03 3.0 undecidable manual Sn -4.43 0
IV.ROSPO.HHZ. 2020-09-21T04:13:23.73 3.0 positive manual Pg 1.58 0
IV.PE3.EHZ. 2020-09-21T04:13:15.97 3.0 undecidable manual S -3.76 0
IV.BRSN.EHZ. 2020-09-21T04:13:13.31 3.0 undecidable manual Pn -4.44 0
IV.MMO1.EHZ. 2020-09-21T04:13:02.46 0.3 undecidable manual S 126 0.179 106 -0.11 73
IV.MMO1.EHZ. 2020-09-21T04:12:59.28 0.3 undecidable manual P 126 0.179 106 -0.26 71
IT.MTCL.HGN. 2020-09-21T04:12:59.61 0.3 undecidable manual S 264 0.0953 118 0.07 75
IV.CSP1.EHZ. 2020-09-21T04:12:59.98 0.3 undecidable manual S 33 0.1034 116 0.15 73
IV.MC2.EHZ. 2020-09-21T04:12:59.86 0.1 undecidable manual S 155 0.1034 116 0.04 100
IV.MC2.EHZ. 2020-09-21T04:12:58.17 0.1 undecidable manual P 155 0.1034 116 0.22 96
IV.CSP1.EHZ. 2020-09-21T04:12:58.00 0.3 undecidable manual P 33 0.1034 116 0.04 75
IV.FDMO.HHZ. 2020-09-21T04:12:57.86 0.3 undecidable manual S 317 0.0441 139 -0.11 75
IV.GAVE.EHZ. 2020-09-21T04:12:57.66 3.0 positive manual P 0.46 0
IT.MTCL.HGN. 2020-09-21T04:12:57.77 0.3 undecidable manual P 264 0.0953 118 -0.02 75
IV.FDMO.HHZ. 2020-09-21T04:12:56.73 0.6 undecidable manual P 317 0.0441 139 -0.16 49
IV.FOSV.EHZ. 2020-09-21T04:12:56.96 3.0 negative manual P -1.47 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0 9.380636E-5 0.16 AML other m 2020-09-21T04:12:57.92
IV.FDMO.HHN. ML:0 9.5036525E-5 0.16 AML other m 2020-09-21T04:12:57.97
IV.FOSV.EHE. ML:0.7 1.3646594E-5 0.4416 AML other m 2020-09-21T04:13:10.29
IV.FOSV.EHN. ML:0.7 1.34153565E-5 0.2208 AML other m 2020-09-21T04:13:09.73
IV.GAVE.EHE. ML:0.8 2.7228402E-5 0.08 AML other m 2020-09-21T04:13:02.73
IV.GAVE.EHN. ML:0.8 2.47630225E-5 0.1024 AML other m 2020-09-21T04:13:07.13
IV.GAVE.HNE. ML:1.6 0.00015191595 0.8608 AML other m 2020-09-21T04:13:00.49
IV.GAVE.HNN. ML:1.7 0.000171228165 0.7488 AML other m 2020-09-21T04:13:02.17
IV.CSP1.EHE. ML:0.4 3.749238E-5 0.1984 AML other m 2020-09-21T04:13:00.38
IV.CSP1.EHN. ML:0.2 2.296744E-5 0.2624 AML other m 2020-09-21T04:13:02.33
IV.BRSN.HNE. ML:2.8 0.0002547799 0.3488 AML other m 2020-09-21T04:13:30.19
IV.BRSN.HNN. ML:2.9 0.0003176987 0.3488 AML other m 2020-09-21T04:13:30.21
IV.BRSN.EHE. ML:2.7 0.00022953585 0.3424 AML other m 2020-09-21T04:13:29.00
IV.BRSN.EHN. ML:2.9 0.00033481425 0.3392 AML other m 2020-09-21T04:13:30.21
IV.EUCT.HNE. ML:4.3 0.0011605095 0.1184 AML other m 2020-09-21T04:13:56.08
IV.EUCT.HNN. ML:4.3 0.0011930695 0.1024 AML other m 2020-09-21T04:13:56.20
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