Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 18-04-2021 and time 19:54:22 (Italy) in region 1 km E Fiordimonte (MC)

A magnitude ML 1.3 earthquake occured in region: 1 km E Fiordimonte (MC), on

  • 18-04-2021 17:54:22 (UTC)
  • 18-04-2021 19:54:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0390, 13.1000 at 9 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Pievebovigliana MC 3 866 1068
Pieve Torina MC 4 1458 2526
Fiastra MC 5 559 3085
Acquacanina MC 6 121 3206
Muccia MC 7 915 4121
Monte Cavallo MC 9 145 4266
Ussita MC 11 444 4710
Camerino MC 11 6974 11684
Bolognola MC 12 142 11826
Visso MC 12 1107 12933
Serravalle di Chienti MC 13 1070 14003
Cessapalombo MC 15 512 14515
Caldarola MC 15 1823 16338
Sarnano MC 17 3264 19602
Castelsantangelo sul Nera MC 17 281 19883
Sefro MC 17 422 20305
Camporotondo di Fiastrone MC 17 563 20868
Serrapetrona MC 17 966 21834
Belforte del Chienti MC 18 1886 23720
Pioraco MC 18 1134 24854
Preci PG 18 724 25578
Castelraimondo MC 19 4587 30165
San Ginesio MC 19 3498 33663
Gualdo MC 20 815 34478

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Foligno (57155 inhabitants)
58 Km E of Perugia (166134 inhabitants)
65 Km NE of Terni (111501 inhabitants)
65 Km NW of Teramo (54892 inhabitants)
73 Km SW of Ancona (100861 inhabitants)
80 Km NW of L'Aquila (69753 inhabitants)
90 Km S of Fano (60888 inhabitants)
98 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
Bulletin
Rev1000 		ML 1.3 2021-04-18
17:54:22		 43.0388 13.0995 9 2021-07-12
16:55:12		 Bollettino Sismico Italiano INGV 90296461
Reviewed
Rev100 		ML 1.3 2021-04-18
17:54:22		 43.054 13.0903 9 2021-04-18
18:03:56		 Sala Sismica INGV-Roma 89225141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-18 17:54:22 ± 0.03
Latitude 43.0388 ± 0.0018
Longitude 13.0995 ± 0.0025
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90296461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 250
Semi-minor axis of confidence ellipse (meter) 109
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 250
Circular confidence region, given by single value of horizontal uncertainty (meter) 250.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 46
Number of associated phases, regardless of their use for origin computation 58
Number of defining phases 58
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00899
Epicentral distance of station farthest from the epicenter (degree) 0.68528
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 34
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 90296461
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-20 15:12:55

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 89225141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-18 18:03:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RM33.HNE. 2021-04-18T17:54:41.52 0.6 undecidable manual S 171 59.496 50 0.44 43
IV.ARVD.HHZ. 2021-04-18T17:54:39.17 0.3 undecidable manual S 346 52.503 50 -0.04 71
IV.LNSS.HNZ. 2021-04-18T17:54:38.24 0.6 undecidable manual S 186 48.618 50 0.07 47
IV.T1299.HNN. 2021-04-18T17:54:38.23 0.6 undecidable manual S 162 47.3193 50 0.42 44
IV.GAVE.EHZ. 2021-04-18T17:54:36.28 0.3 undecidable manual S 204 41.9247 50 -0.1 71
IV.ATCC.EHE. 2021-04-18T17:54:35.93 0.6 undecidable manual S 294 40.626 50 -0.1 48
IV.MTRA.EHE. 2021-04-18T17:54:35.37 0.6 undecidable manual S 142 39.5271 50 -0.37 45
IV.FOSV.EHZ. 2021-04-18T17:54:35.97 0.6 undecidable manual S 316 39.4272 50 0.25 46
IV.NARO.HHZ. 2021-04-18T17:54:35.70 0.3 undecidable manual P 327 76.0683 50 -0.01 68
IV.CING.HNZ. 2021-04-18T17:54:35.43 0.6 undecidable manual S 12 38.1285 50 0.05 48
IV.ASSB.HHZ. 2021-04-18T17:54:34.73 0.3 undecidable manual S 271 35.742 50 0 74
IV.PIEI.HHZ. 2021-04-18T17:54:34.71 0.3 undecidable manual P 321 71.4729 50 -0.31 65
IV.TERO.HHZ. 2021-04-18T17:54:33.58 0.3 undecidable manual P 138 61.7937 50 0.06 69
IV.EL6.EHZ. 2021-04-18T17:54:33.72 0.3 undecidable manual S 0 32.2455 50 -0.08 73
IV.FRON.EHZ. 2021-04-18T17:54:33.32 0.3 undecidable manual P 331 61.0944 50 -0.09 69
IV.MF5.EHZ. 2021-04-18T17:54:33.48 0.3 undecidable manual S 101 29.748 50 0.34 69
IV.ARRO.EHZ. 2021-04-18T17:54:33.04 0.6 undecidable manual P 208 57.7977 50 0.14 46
IV.ARVD.HHZ. 2021-04-18T17:54:32.20 0.3 undecidable manual P 346 52.503 50 0.11 70
IV.ATFO.HHZ. 2021-04-18T17:54:32.57 0.3 undecidable manual P 311 56.0994 50 -0.07 70
IV.RM33.HNE. 2021-04-18T17:54:32.89 0.1 undecidable manual P 171 59.496 50 -0.28 89
IV.MURB.HHZ. 2021-04-18T17:54:32.34 0.3 undecidable manual P 298 52.7028 50 0.22 68
IV.MOMA.HHZ. 2021-04-18T17:54:31.76 0.3 undecidable manual P 239 50.3163 50 0.02 71
IV.MMO1.EHZ. 2021-04-18T17:54:31.32 0.3 undecidable manual S 130 24.0537 111 -0.01 75
IV.SMA1.EHZ. 2021-04-18T17:54:31.37 0.3 undecidable manual P 157 49.2174 50 -0.2 69
IV.LNSS.HNZ. 2021-04-18T17:54:31.28 0.1 undecidable manual P 186 48.618 50 -0.2 92
IV.SSFR.HHN. 2021-04-18T17:54:31.86 0.1 undecidable manual P 330 51.0156 50 0 95
IV.T1299.HNN. 2021-04-18T17:54:31.34 0.1 undecidable manual P 162 47.3193 50 0.06 95
IV.GAVE.EHZ. 2021-04-18T17:54:30.45 0.3 undecidable manual P 204 41.9247 50 -0.01 73
IV.NRCA.HHZ. 2021-04-18T17:54:30.64 0.3 undecidable manual S 177 22.755 112 -0.28 71
IV.MDAR.HNZ. 2021-04-18T17:54:29.17 0.6 undecidable manual S 12 17.4714 118 -0.05 50
IV.SEF1.HNZ. 2021-04-18T17:54:29.47 0.6 undecidable manual S 314 17.1717 119 0.32 47
IV.CING.HNZ. 2021-04-18T17:54:29.80 0.1 undecidable manual P 12 38.1285 50 -0.07 96
IV.ATCC.EHE. 2021-04-18T17:54:29.99 0.1 undecidable manual P 294 40.626 50 -0.26 92
IV.ASSB.HHZ. 2021-04-18T17:54:29.42 0.1 positive manual P 271 35.742 50 -0.08 97
IV.MTRA.EHE. 2021-04-18T17:54:29.80 0.1 undecidable manual P 142 39.5271 50 -0.29 92
IV.MC2.EHZ. 2021-04-18T17:54:29.04 0.3 undecidable manual S 153 15.873 121 0.28 72
IV.FOSV.EHZ. 2021-04-18T17:54:29.97 0.3 undecidable manual P 316 39.4272 50 -0.1 72
IV.CESI.HHZ. 2021-04-18T17:54:29.01 0.3 undecidable manual S 257 16.2726 120 0.14 74
IV.EL6.EHZ. 2021-04-18T17:54:28.73 0.3 undecidable manual P 0 32.2455 50 -0.23 71
IV.MF5.EHZ. 2021-04-18T17:54:28.97 0.3 undecidable manual P 101 29.748 50 0.39 69
IV.MML1.HNZ. 2021-04-18T17:54:28.03 0.3 undecidable manual S 309 13.2756 125 0.04 76
IV.PF6.EHZ. 2021-04-18T17:54:27.90 0.3 undecidable manual S 35 13.3755 125 -0.14 74
IV.CSP1.EHZ. 2021-04-18T17:54:27.28 0.6 undecidable manual S 55 10.3785 132 0.07 51
IV.NRCA.HHZ. 2021-04-18T17:54:27.28 0.1 negative manual P 177 22.755 112 -0.02 100
IV.MMO1.EHZ. 2021-04-18T17:54:27.54 0.3 negative manual P 130 24.0537 111 0 75
IV.MC2.EHZ. 2021-04-18T17:54:26.22 0.3 undecidable manual P 153 15.873 121 0.16 74
IV.CESI.HHZ. 2021-04-18T17:54:26.39 0.1 positive manual P 257 16.2726 120 0.27 96
IV.MDAR.HNZ. 2021-04-18T17:54:26.29 0.6 undecidable manual P 12 17.4714 118 -0.04 50
IV.SEF1.HNZ. 2021-04-18T17:54:26.68 0.1 undecidable manual P 314 17.1717 119 0.4 93
IT.MTCL.HGZ. 2021-04-18T17:54:26.93 0.6 undecidable manual S 238 9.4794 135 -0.07 51
IV.FEMA.HNZ. 2021-04-18T17:54:26.94 0.3 undecidable manual S 205 9.3795 135 -0.03 77
IT.MTCL.HGZ. 2021-04-18T17:54:25.17 0.1 undecidable manual P 238 9.4794 135 0.13 100
IV.MML1.HNZ. 2021-04-18T17:54:25.77 0.3 undecidable manual P 309 13.2756 125 0.16 74
IV.FEMA.HNZ. 2021-04-18T17:54:25.27 0.3 undecidable manual P 205 9.3795 135 0.25 73
IV.PF6.EHZ. 2021-04-18T17:54:25.74 0.3 undecidable manual P 35 13.3755 125 0.1 75
IV.CSP1.EHZ. 2021-04-18T17:54:25.35 0.3 undecidable manual P 55 10.3785 132 0.19 74
IV.FDMO.HHZ. 2021-04-18T17:54:24.71 0.3 undecidable manual S 255 0.999 174 -0.93 59
IV.FDMO.HHZ. 2021-04-18T17:54:24.03 0.1 undecidable manual P 255 0.999 174 -0.22 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.2 0.00013350000000000002 0.26 AML other m 2021-04-18T17:54:29.35
IV.CESI.HHE. ML:1.0 0.0000995 1.14 AML other m 2021-04-18T17:54:30.76
IV.NRCA.HHN. ML:1.6 0.000246 0.12 AML other m 2021-04-18T17:54:32.49
IV.NRCA.HHE. ML:1.6 0.000252 1.36 AML other m 2021-04-18T17:54:32.00
IV.EL6.EHN. ML:1.4 0.00011915000000000001 0.44 AML other m 2021-04-18T17:54:34.22
IV.EL6.EHE. ML:1.5 0.000133 0.24 AML other m 2021-04-18T17:54:34.78
IV.ASSB.HHN. ML:1.6 0.00016999999999999999 1.74 AML other m 2021-04-18T17:54:34.01
IV.ATFO.HHE. ML:1.5 0.00006535 1.22 AML other m 2021-04-18T17:54:35.15
IV.ASSB.HHE. ML:1.2 0.00007175000000000001 0.98 AML other m 2021-04-18T17:54:35.60
IV.ATFO.HHN. ML:1.4 0.000047600000000000005 1.26 AML other m 2021-04-18T17:54:35.11
IV.FOSV.EHE. ML:1.2 0.0000482 0.18 AML other m 2021-04-18T17:54:36.14
IV.FOSV.EHN. ML:1.4 0.00008124999999999998 0.28 AML other m 2021-04-18T17:54:36.52
IV.MURB.HHN. ML:1.4 0.000058099999999999996 0.26 AML other m 2021-04-18T17:54:36.77
IV.GAVE.EHE. ML:1.5 0.00010580000000000001 0.18 AML other m 2021-04-18T17:54:37.23
IV.GAVE.EHN. ML:1.5 0.00009765 1.04 AML other m 2021-04-18T17:54:37.72
IV.FRON.EHE. ML:1.0 0.00001795 0.42 AML other m 2021-04-18T17:54:38.23
IV.PIEI.HHN. ML:1.0 0.0000126 1.58 AML other m 2021-04-18T17:54:39.12
IV.MOMA.HHE. ML:1.0 0.0000257 0.18 AML other m 2021-04-18T17:54:40.60
IV.MOMA.HHN. ML:1.0 0.000025399999999999997 0.18 AML other m 2021-04-18T17:54:40.84
IV.MURB.HHE. ML:1.4 0.00006264999999999999 0.2 AML other m 2021-04-18T17:54:41.47
IV.FRON.EHN. ML:1.2 0.00002855 0.52 AML other m 2021-04-18T17:54:42.73
IV.TERO.HHE. ML:0.9 0.0000168 0.32 AML other m 2021-04-18T17:54:43.69
IV.TERO.HHN. ML:1.1 0.0000241 0.54 AML other m 2021-04-18T17:54:45.41
IV.PIEI.HHE. ML:1.1 0.000018599999999999998 1.12 AML other m 2021-04-18T17:54:46.81
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