Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 18-04-2021 and time 01:43:18 (Italy) in region 2 km E Fiordimonte (MC)

A magnitude ML 1.6 earthquake occured in region: 2 km E Fiordimonte (MC), on

  • 17-04-2021 23:43:18 (UTC)
  • 18-04-2021 01:43:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0440, 13.1130 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 2 202 202
Pievebovigliana MC 3 866 1068
Fiastra MC 4 559 1627
Pieve Torina MC 5 1458 3085
Acquacanina MC 5 121 3206
Muccia MC 7 915 4121
Monte Cavallo MC 11 145 4266
Bolognola MC 11 142 4408
Camerino MC 11 6974 11382
Ussita MC 11 444 11826
Visso MC 13 1107 12933
Serravalle di Chienti MC 13 1070 14003
Cessapalombo MC 14 512 14515
Caldarola MC 14 1823 16338
Sarnano MC 15 3264 19602
Camporotondo di Fiastrone MC 16 563 20165
Serrapetrona MC 16 966 21131
Castelsantangelo sul Nera MC 17 281 21412
Belforte del Chienti MC 17 1886 23298
Sefro MC 18 422 23720
San Ginesio MC 18 3498 27218
Pioraco MC 18 1134 28352
Gualdo MC 19 815 29167
Castelraimondo MC 19 4587 33754
Preci PG 19 724 34478

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Foligno (57155 inhabitants)
59 Km E of Perugia (166134 inhabitants)
65 Km NW of Teramo (54892 inhabitants)
66 Km NE of Terni (111501 inhabitants)
72 Km SW of Ancona (100861 inhabitants)
80 Km N of L'Aquila (69753 inhabitants)
89 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 1.6 2021-04-17
23:43:18		 43.0442 13.1133 9 2021-07-12
16:55:08		 Bollettino Sismico Italiano INGV 89594431
Reviewed
Rev100 		ML 1.9 2021-04-17
23:43:18		 43.0468 13.1195 10 2021-04-17
23:53:13		 Sala Sismica INGV-Roma 89193911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-17 23:43:18 ± 0.04
Latitude 43.0442 ± 0.0018
Longitude 13.1133 ± 0.0037
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 89594431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 261
Semi-minor axis of confidence ellipse (meter) 141
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 70
Circular confidence region, given by single value of horizontal uncertainty (meter) 260.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 31
Number of associated phases, regardless of their use for origin computation 85
Number of defining phases 85
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.02068
Epicentral distance of station farthest from the epicenter (degree) 0.68618
Number of stations at which the event was observed 44
Number of stations from which data was used for origin computation 44
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 30
Type of magnitude ML
Reference to an origin 89193911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-17 23:53:13

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 47
Type of magnitude ML
Reference to an origin 89594431
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-18 15:06:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NARO.HHZ. 2021-04-17T23:43:42.38 0.3 undecidable manual S 326 76.1682 50 0.78 53
IV.PIEI.HHZ. 2021-04-17T23:43:41.33 0.6 undecidable manual S 320 71.7726 50 0.89 34
IV.TERO.HHZ. 2021-04-17T23:43:38.08 0.6 undecidable manual S 139 61.494 50 0.4 42
IV.FRON.EHZ. 2021-04-17T23:43:38.20 0.6 undecidable manual S 329 61.1943 50 0.61 39
IV.CESX.HHZ. 2021-04-17T23:43:38.70 0.6 undecidable manual S 222 64.5909 50 0.19 43
IV.RM33.EHZ. 2021-04-17T23:43:37.55 0.3 undecidable manual S 172 59.8956 50 0.27 64
IV.ARRO.EHZ. 2021-04-17T23:43:37.10 0.6 undecidable manual S 209 58.7967 50 0.12 44
IV.MOMA.HHZ. 2021-04-17T23:43:36.26 0.6 undecidable manual S 239 51.5151 50 1.22 30
IV.MURB.HHZ. 2021-04-17T23:43:36.27 0.6 undecidable manual S 297 53.502 50 0.73 38
IV.SSFR.HHZ. 2021-04-17T23:43:35.41 0.6 undecidable manual S 329 51.1155 50 0.5 41
IV.ARVD.HHZ. 2021-04-17T23:43:35.62 0.6 undecidable manual S 345 52.2033 50 0.4 42
IV.T1299.HNN. 2021-04-17T23:43:34.32 0.6 undecidable manual S 163 47.5191 50 0.37 43
IV.SMA1.EHZ. 2021-04-17T23:43:34.42 0.6 undecidable manual S 158 49.3173 50 -0.02 46
IV.LNSS.HNZ. 2021-04-17T23:43:34.25 0.3 undecidable manual S 187 49.3173 50 -0.19 67
IV.MMUR.HNE. 2021-04-17T23:43:33.54 0.3 undecidable manual S 348 45.1215 50 0.23 67
IV.ATCC.EHZ. 2021-04-17T23:43:32.64 0.3 undecidable manual S 292 41.4252 50 0.32 66
IV.GAVE.EHZ. 2021-04-17T23:43:32.65 0.3 undecidable manual S 205 42.9237 50 -0.08 69
IV.ASSB.HHZ. 2021-04-17T23:43:31.02 0.6 undecidable manual S 270 36.8298 50 -0.09 46
IV.MTRA.EHE. 2021-04-17T23:43:31.43 0.6 undecidable manual S 144 39.3273 50 -0.34 44
IV.NARO.HHZ. 2021-04-17T23:43:31.59 0.1 undecidable manual P 326 76.1682 50 -0.18 85
IV.ATMI.HHZ. 2021-04-17T23:43:31.89 0.3 undecidable manual P 295 75.5688 50 0.21 63
IV.FOSV.EHZ. 2021-04-17T23:43:31.87 0.6 undecidable manual S 314 39.8268 50 -0.03 47
IT.FOPC.HGN. 2021-04-17T23:43:30.62 0.3 undecidable manual S 256 34.2435 50 0.19 68
IV.PIEI.HHZ. 2021-04-17T23:43:30.87 0.1 undecidable manual P 320 71.7726 50 -0.23 84
IV.CING.HNZ. 2021-04-17T23:43:30.97 0.3 undecidable manual S 10 37.3293 50 -0.28 67
IV.MNTP.HNZ. 2021-04-17T23:43:30.45 0.6 undecidable manual S 70 30.6471 106 1.03 34
IV.MPAG.EHZ. 2021-04-17T23:43:30.98 0.3 undecidable manual P 336 70.8735 50 0.01 66
IV.MF5.EHZ. 2021-04-17T23:43:29.41 0.6 undecidable manual S 102 28.749 107 0.6 41
IV.EL6.EHZ. 2021-04-17T23:43:29.40 0.3 undecidable manual S 358 31.6461 50 -0.32 67
IV.TERO.HHZ. 2021-04-17T23:43:29.13 0.3 undecidable manual P 139 61.494 50 -0.38 63
IV.FRON.EHZ. 2021-04-17T23:43:29.15 0.1 undecidable manual P 329 61.1943 50 -0.31 85
IV.CESX.HHZ. 2021-04-17T23:43:29.73 0.3 undecidable manual P 222 64.5909 50 -0.26 64
IV.RM33.EHZ. 2021-04-17T23:43:29.24 0.3 undecidable manual P 172 59.8956 50 -0.03 67
IV.ARRO.EHZ. 2021-04-17T23:43:28.49 0.3 undecidable manual P 209 58.7967 50 -0.61 59
IV.MURB.HHZ. 2021-04-17T23:43:28.33 0.3 undecidable manual P 297 53.502 50 0.05 68
IV.SNTG.HHZ. 2021-04-17T23:43:28.02 0.6 undecidable manual S 329 27.2505 108 -0.27 45
IV.ARVD.HHZ. 2021-04-17T23:43:27.78 0.1 undecidable manual P 345 52.2033 50 -0.3 86
IV.LNSS.HNZ. 2021-04-17T23:43:27.44 0.3 undecidable manual P 187 49.3173 50 -0.2 66
IV.MMUR.HNE. 2021-04-17T23:43:27.09 0.3 undecidable manual P 348 45.1215 50 0.11 68
IV.SSFR.HHZ. 2021-04-17T23:43:27.69 0.1 positive manual P 329 51.1155 50 -0.22 88
IV.MOMA.HHZ. 2021-04-17T23:43:27.81 0.1 undecidable manual P 239 51.5151 50 -0.17 89
IV.T1299.HNN. 2021-04-17T23:43:27.21 0.1 undecidable manual P 163 47.5191 50 -0.15 90
IV.SAP2.EHZ. 2021-04-17T23:43:27.89 0.3 undecidable manual S 76 23.8539 111 0.69 60
IV.SMA1.EHZ. 2021-04-17T23:43:27.23 0.1 undecidable manual P 158 49.3173 50 -0.41 85
IV.FIU1.HNZ. 2021-04-17T23:43:26.11 0.3 undecidable manual S 317 21.7671 112 -0.39 67
IV.NRCA.HHZ. 2021-04-17T23:43:26.82 0.6 undecidable manual S 180 23.3544 111 -0.21 46
IV.GAG1.HNZ. 2021-04-17T23:43:26.70 0.3 undecidable manual S 350 21.867 112 0.17 70
IV.GAVE.EHZ. 2021-04-17T23:43:26.48 0.1 undecidable manual P 205 42.9237 50 -0.17 90
IV.MMO1.EHZ. 2021-04-17T23:43:26.85 0.6 undecidable manual S 133 23.6541 111 -0.26 46
IV.MNTT.EHZ. 2021-04-17T23:43:26.62 0.1 undecidable manual P 87 39.1275 50 0.55 83
IV.ATCC.EHZ. 2021-04-17T23:43:26.34 0.3 undecidable manual P 292 41.4252 50 -0.07 69
IT.FOPC.HGN. 2021-04-17T23:43:25.20 0.3 undecidable manual P 256 34.2435 50 -0.12 69
IV.FOSV.EHZ. 2021-04-17T23:43:25.90 0.1 negative manual P 314 39.8268 50 -0.27 89
IV.CESI.HHZ. 2021-04-17T23:43:25.51 0.6 undecidable manual S 256 17.4714 117 0.35 45
IV.CING.HNZ. 2021-04-17T23:43:25.40 0.1 undecidable manual P 10 37.3293 50 -0.39 87
IV.MTRA.EHE. 2021-04-17T23:43:25.66 0.3 undecidable manual P 144 39.3273 50 -0.44 64
IV.SEF1.HNZ. 2021-04-17T23:43:25.22 0.3 undecidable manual S 310 17.5713 117 0.03 73
IV.ASSB.HHZ. 2021-04-17T23:43:25.48 0.1 positive manual P 270 36.8298 50 -0.24 90
IV.MML1.HNZ. 2021-04-17T23:43:24.16 0.6 undecidable manual S 304 13.7751 123 0.1 48
IV.MNTP.HNZ. 2021-04-17T23:43:24.99 0.3 undecidable manual P 70 30.6471 106 0.25 68
IV.MF5.EHZ. 2021-04-17T23:43:24.54 0.1 undecidable manual P 102 28.749 107 0.16 93
IV.EL6.EHZ. 2021-04-17T23:43:24.50 0.1 undecidable manual P 358 31.6461 50 -0.41 87
IV.MDAR.HNZ. 2021-04-17T23:43:24.69 0.6 undecidable manual S 8 16.6722 118 -0.21 47
IV.MC2.EHZ. 2021-04-17T23:43:24.84 0.6 undecidable manual S 157 15.9729 119 0.15 47
IV.SAP2.EHZ. 2021-04-17T23:43:23.80 0.3 undecidable manual P 76 23.8539 111 0.34 67
IV.PF6.EHZ. 2021-04-17T23:43:23.30 0.1 undecidable manual S 32 12.2766 126 -0.32 92
IT.MTCL.HGZ. 2021-04-17T23:43:23.36 0.6 undecidable manual S 239 10.7781 130 0.15 48
IV.SNTG.HHZ. 2021-04-17T23:43:23.83 0.3 undecidable manual P 329 27.2505 108 -0.26 68
IV.NRCA.HHZ. 2021-04-17T23:43:23.23 0.1 negative manual P 180 23.3544 111 -0.13 94
IV.GAG1.HNZ. 2021-04-17T23:43:23.11 0.3 undecidable manual P 350 21.867 112 0.04 72
IV.FEMA.HNZ. 2021-04-17T23:43:23.45 0.6 undecidable manual S 210 10.4784 131 0.33 46
IV.MMO1.EHZ. 2021-04-17T23:43:23.21 0.1 negative manual P 133 23.6541 111 -0.2 93
IV.CSP1.EHZ. 2021-04-17T23:43:22.68 0.1 undecidable manual S 55 9.0798 134 -0.09 97
IV.CESI.HHZ. 2021-04-17T23:43:22.48 0.1 positive manual P 256 17.4714 117 0.2 94
IV.MDAR.HNZ. 2021-04-17T23:43:22.09 0.3 undecidable manual P 8 16.6722 118 -0.04 73
IV.SEF1.HNZ. 2021-04-17T23:43:22.43 0.3 undecidable manual P 310 17.5713 117 0.13 71
IV.MC2.EHZ. 2021-04-17T23:43:22.11 0.1 negative manual P 157 15.9729 119 0.1 96
IV.FIU1.HNZ. 2021-04-17T23:43:22.93 0.3 undecidable manual P 317 21.7671 112 -0.12 71
IV.MML1.HNZ. 2021-04-17T23:43:21.79 0.1 negative manual P 304 13.7751 123 0.15 95
IV.PF6.EHZ. 2021-04-17T23:43:21.33 0.1 positive manual P 32 12.2766 126 -0.06 97
IV.FDMO.HHZ. 2021-04-17T23:43:21.14 0.1 undecidable manual S 248 2.2977 166 -0.41 92
IT.MTCL.HGZ. 2021-04-17T23:43:21.39 0.1 negative manual P 239 10.7781 130 0.24 94
IV.FEMA.HNZ. 2021-04-17T23:43:21.54 0.1 undecidable manual P 210 10.4784 131 0.44 90
IV.FDMO.HHZ. 2021-04-17T23:43:20.19 0.1 negative manual P 248 2.2977 166 0 100
IV.CSP1.EHZ. 2021-04-17T23:43:20.93 0.1 positive manual P 55 9.0798 134 0.03 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHE. ML:1.9 0.00123336845 0.3328 AML other m 2021-04-17T23:43:22.90
IV.CSP1.EHN. ML:1.9 0.00117891255 0.0896 AML other m 2021-04-17T23:43:22.99
IV.CESI.HNN. ML:1.6 0.00033855415 0.3072 AML other m 2021-04-17T23:43:25.78
IV.CESI.HHN. ML:1.6 0.00034950000000000004 0.3 AML other m 2021-04-17T23:43:25.78
IV.CESI.HHE. ML:1.5 0.00025317410000000003 0.32 AML other m 2021-04-17T23:43:25.80
IV.CESI.HNE. ML:1.4 0.00020058779999999998 1.8592 AML other m 2021-04-17T23:43:26.06
IV.NRCA.HHE. ML:1.7 0.0003482502 0.0896 AML other m 2021-04-17T23:43:27.03
IV.NRCA.HHN. ML:1.8 0.0003937965 0.1024 AML other m 2021-04-17T23:43:27.10
IV.NRCA.HNE. ML:1.7 0.00033670079999999995 0.5376 AML other m 2021-04-17T23:43:27.32
IV.NRCA.HNN. ML:1.8 0.00039555 0.1024 AML other m 2021-04-17T23:43:27.10
IV.SAP2.EHN. ML:1.9 0.0005766803 0.5376 AML other m 2021-04-17T23:43:28.33
IV.SAP2.EHE. ML:1.2 0.00010241912 0.0768 AML other m 2021-04-17T23:43:28.20
IV.SNTG.HHN. ML:1.0 0.000059752014999999994 0.1152 AML other m 2021-04-17T23:43:28.31
IV.SNTG.HNE. ML:1.4 0.00013354865 0.32 AML other m 2021-04-17T23:43:28.32
IV.EL6.EHE. ML:1.8 0.0003038817 0.2816 AML other m 2021-04-17T23:43:29.64
IV.MF5.EHN. ML:1.5 0.000151675115 0.3456 AML other m 2021-04-17T23:43:29.45
IV.EL6.EHN. ML:1.9 0.00038218425 0.192 AML other m 2021-04-17T23:43:29.69
IV.MF5.EHE. ML:1.4 0.0001228264 0.384 AML other m 2021-04-17T23:43:30.04
IV.ASSB.HHN. ML:1.9 0.00032941015000000003 0.256 AML other m 2021-04-17T23:43:31.23
IV.ASSB.HHE. ML:1.5 0.00012833705 0.1024 AML other m 2021-04-17T23:43:31.14
IV.FOSV.EHE. ML:1.3 0.00006480978 0.1664 AML other m 2021-04-17T23:43:32.08
IV.FOSV.EHN. ML:1.8 0.00021450000000000004 0.22 AML other m 2021-04-17T23:43:32.26
IV.GAVE.HNE. ML:2.0 0.00036076544999999997 0.2688 AML other m 2021-04-17T23:43:32.88
IV.ATCC.EHN. ML:2.0 0.00033650000000000005 0.16 AML other m 2021-04-17T23:43:32.85
IV.ATCC.EHE. ML:2.1 0.00039779370000000004 0.1536 AML other m 2021-04-17T23:43:32.98
IV.GAVE.EHE. ML:2.1 0.00037 1.7 AML other m 2021-04-17T23:43:33.88
IV.GAVE.EHN. ML:1.7 0.0001754548 0.256 AML other m 2021-04-17T23:43:33.19
IV.ARVD.HHE. ML:1.2 0.000037253825 0.8192 AML other m 2021-04-17T23:43:36.12
IV.SSFR.HNE. ML:1.9 0.00019621845 1.7696 AML other m 2021-04-17T23:43:36.88
IV.SSFR.HHE. ML:1.8 0.0001777879 1.7568 AML other m 2021-04-17T23:43:36.88
IV.MOMA.HHE. ML:0.9 0.000018122975 0.1664 AML other m 2021-04-17T23:43:36.42
IV.MOMA.HHN. ML:0.9 0.00002096601 0.1792 AML other m 2021-04-17T23:43:36.52
IV.MURB.HHE. ML:1.8 0.0001586736 0.192 AML other m 2021-04-17T23:43:36.61
IV.MURB.HNE. ML:2.0 0.0002586598 0.4608 AML other m 2021-04-17T23:43:36.86
IV.ARRO.EHN. ML:1.1 0.00002537351 0.2432 AML other m 2021-04-17T23:43:37.49
IV.ARRO.EHE. ML:1.2 0.000032273755 0.2816 AML other m 2021-04-17T23:43:37.48
IV.MURB.HHN. ML:1.8 0.00014169815 0.2432 AML other m 2021-04-17T23:43:37.94
IV.RM33.EHN. ML:1.0 0.00002249015 0.3456 AML other m 2021-04-17T23:43:37.97
IV.RM33.EHE. ML:1.0 0.000021413849999999998 0.6656 AML other m 2021-04-17T23:43:38.18
IV.FRON.EHE. ML:1.2 0.000032760935 0.3712 AML other m 2021-04-17T23:43:38.71
IV.FRON.EHN. ML:1.4 0.000045428665 0.384 AML other m 2021-04-17T23:43:38.80
IV.TERO.HHN. ML:1.1 0.000027365175 0.1024 AML other m 2021-04-17T23:43:39.21
IV.MURB.HNN. ML:1.8 0.00014535324999999998 0.2944 AML other m 2021-04-17T23:43:39.61
IV.PIEI.HHN. ML:1.3 0.0000284142245 0.4096 AML other m 2021-04-17T23:43:41.41
IV.PIEI.HHE. ML:1.3 0.00003717039 0.1408 AML other m 2021-04-17T23:43:41.92
IV.MOMA.HNE. ML:1.6 0.00010838773000000001 0.5888 AML other m 2021-04-17T23:43:43.29
IV.MOMA.HNN. ML:1.8 0.0001571875 0.9728 AML other m 2021-04-17T23:43:49.25
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