Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 26-05-2021 and time 16:42:31 (Italy) in region 1 km W Fiordimonte (MC)

A magnitude ML 0.9 earthquake occured in region: 1 km W Fiordimonte (MC), on

  • 26-05-2021 14:42:31 (UTC)
  • 26-05-2021 16:42:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0440, 13.0750 at 5 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.

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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 2 1458 1660
Pievebovigliana MC 2 866 2526
Muccia MC 5 915 3441
Fiastra MC 7 559 4000
Monte Cavallo MC 8 145 4145
Acquacanina MC 8 121 4266
Camerino MC 10 6974 11240
Serravalle di Chienti MC 10 1070 12310
Ussita MC 12 444 12754
Visso MC 13 1107 13861
Bolognola MC 14 142 14003
Sefro MC 15 422 14425
Caldarola MC 16 1823 16248
Cessapalombo MC 17 512 16760
Pioraco MC 17 1134 17894
Serrapetrona MC 18 966 18860
Castelsantangelo sul Nera MC 18 281 19141
Camporotondo di Fiastrone MC 18 563 19704
Sarnano MC 19 3264 22968
Preci PG 19 724 23692
Castelraimondo MC 19 4587 28279
Belforte del Chienti MC 19 1886 30165
Fiuminata MC 20 1402 31567

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km E of Foligno (57155 inhabitants)
56 Km E of Perugia (166134 inhabitants)
64 Km NE of Terni (111501 inhabitants)
67 Km NW of Teramo (54892 inhabitants)
73 Km SW of Ancona (100861 inhabitants)
81 Km NW of L'Aquila (69753 inhabitants)
89 Km S of Fano (60888 inhabitants)
97 Km S of Pesaro (94582 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 0.9 2021-05-26
14:42:31		 43.0438 13.0747 5 2021-05-26
14:57:55		 Sala Sismica INGV-Roma 90511811
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-26 14:42:31 ± 0.15
Latitude 43.0438 ± 0.0036
Longitude 13.0747 ± 0.0098
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 90511811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 740
Semi-minor axis of confidence ellipse (meter) 289
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 256
Circular confidence region, given by single value of horizontal uncertainty (meter) 740.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 216
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.28598
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 90511811
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-26 14:57:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2021-05-26T14:42:55.09 3.0 undecidable manual S 0.39 0
IV.ARRO.EHZ. 2021-05-26T14:42:50.31 3.0 undecidable manual S -0.1 0
IV.EL6.EHZ. 2021-05-26T14:42:42.01 0.6 undecidable manual S 4 31.746 99 -0.23 47
IV.MMO1.EHZ. 2021-05-26T14:42:39.92 0.3 undecidable manual S 128 25.9518 101 -0.36 70
IV.EL6.EHZ. 2021-05-26T14:42:37.48 0.1 undecidable manual P 4 31.746 99 -0.05 99
IV.MC2.EHZ. 2021-05-26T14:42:37.38 0.3 undecidable manual S 148 17.3715 106 0.01 76
IV.MMO1.EHZ. 2021-05-26T14:42:36.43 0.1 undecidable manual P 128 25.9518 101 0.04 100
IV.CSP1.EHZ. 2021-05-26T14:42:35.68 0.3 undecidable manual S 63 11.7771 113 0.12 75
IV.MC2.EHZ. 2021-05-26T14:42:34.88 0.1 undecidable manual P 148 17.3715 106 0.17 99
IV.CSP1.EHZ. 2021-05-26T14:42:33.82 0.1 positive manual P 63 11.7771 113 0.15 100
IV.FDMO.HHZ. 2021-05-26T14:42:32.87 0.3 undecidable manual S 128 1.2987 166 -0.05 78
IV.FDMO.HHZ. 2021-05-26T14:42:32.19 1.0 undecidable manual P 128 1.2987 166 0.05 26
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.0 0.0009572070500000001 0.16 AML other m 2021-05-26T14:42:32.89
IV.FDMO.HHN. ML:0.0 0.001733274 0.096 AML other m 2021-05-26T14:42:32.95
IV.CSP1.EHE. ML:1.1 0.00017691014999999998 0.2816 AML other m 2021-05-26T14:42:37.36
IV.CSP1.EHN. ML:1.2 0.00022191420000000002 0.256 AML other m 2021-05-26T14:42:38.07
IV.EL6.EHE. ML:0.7 0.000026917635 0.6656 AML other m 2021-05-26T14:42:40.90
IV.EL6.EHN. ML:0.7 0.000026056820000000002 0.1984 AML other m 2021-05-26T14:42:43.41
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download