Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 18-08-2021 and time 16:13:49 (Italy) in region 5 km S Fiordimonte (MC)

A magnitude ML 2.1 earthquake occured in region: 5 km S Fiordimonte (MC), on

  • 18-08-2021 14:13:49 (UTC)
  • 18-08-2021 16:13:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9940, 13.1070 at 12 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 5 202 202
Ussita MC 6 444 646
Fiastra MC 6 559 1205
Acquacanina MC 7 121 1326
Visso MC 7 1107 2433
Pieve Torina MC 7 1458 3891
Pievebovigliana MC 8 866 4757
Monte Cavallo MC 9 145 4902
Bolognola MC 10 142 5044
Muccia MC 11 915 5959
Castelsantangelo sul Nera MC 12 281 6240
Preci PG 14 724 6964
Serravalle di Chienti MC 15 1070 8034
Camerino MC 16 6974 15008
Sarnano MC 17 3264 18272
Cessapalombo MC 18 512 18784
Sellano PG 19 1079 19863
Caldarola MC 19 1823 21686
Montefortino FM 20 1178 22864

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Foligno (57155 inhabitants)
60 Km E of Perugia (166134 inhabitants)
61 Km NE of Terni (111501 inhabitants)
61 Km NW of Teramo (54892 inhabitants)
75 Km NW of L'Aquila (69753 inhabitants)
77 Km SW of Ancona (100861 inhabitants)
95 Km S of Fano (60888 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 2.1 2021-08-18
14:13:49		 42.9942 13.1068 12 2021-12-29
11:12:26		 Bollettino Sismico Italiano INGV 95143341
Reviewed
Rev100 		ML 2.2 2021-08-18
14:13:49		 43.0033 13.1093 11 2021-08-18
14:24:07		 Sala Sismica INGV-Roma 94336231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-18 14:13:49 ± 0.03
Latitude 42.9942 ± 0.0018
Longitude 13.1068 ± 0.0025
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 95143341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 210
Semi-minor axis of confidence ellipse (meter) 8
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 63
Circular confidence region, given by single value of horizontal uncertainty (meter) 210.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 29
Number of associated phases, regardless of their use for origin computation 73
Number of defining phases 70
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.80579
Number of stations at which the event was observed 43
Number of stations from which data was used for origin computation 40
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 48
Type of magnitude ML
Reference to an origin 95143341
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-07 07:32:24

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 94336231
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-18 14:24:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ZCCA.HHZ. 2021-08-18T14:14:26.03 3.0 negative manual Pn 2.42 0
IT.GLNS.HNZ. 2021-08-18T14:14:19.73 3.0 undecidable manual Pn 0.37 0
IV.VIVA.HHZ. 2021-08-18T14:14:13.88 3.0 positive manual P 0.84 0
IV.ARVD.HHZ. 2021-08-18T14:14:07.65 0.6 undecidable manual S 347 57.498 92 0.23 43
IV.CAMP.HHE. 2021-08-18T14:14:07.29 0.6 undecidable manual S 154 56.499 92 0.14 45
IV.VCEL.EHZ. 2021-08-18T14:14:04.95 0.6 undecidable manual P 138 89.4438 91 0.13 42
IV.SMA1.EHN. 2021-08-18T14:14:04.09 0.6 undecidable manual S 155 44.4222 92 0.16 46
IV.LNSS.HNZ. 2021-08-18T14:14:04.16 0.6 undecidable manual S 187 43.7229 92 0.41 43
IV.ATCC.EHZ. 2021-08-18T14:14:03.69 0.3 undecidable manual S 299 43.3233 92 0.05 70
IV.T1299.HNN. 2021-08-18T14:14:03.74 0.6 undecidable manual S 160 42.4242 92 0.35 44
IV.CING.HHZ. 2021-08-18T14:14:03.52 0.3 undecidable manual S 10 42.9237 92 -0.01 70
IV.FOSV.EHZ. 2021-08-18T14:14:03.67 0.3 undecidable manual S 320 43.5231 92 -0.02 70
IV.PIEI.HHZ. 2021-08-18T14:14:02.97 0.6 undecidable manual P 323 75.7686 91 0.26 42
IV.EL6.EHZ. 2021-08-18T14:14:02.08 0.3 undecidable manual S 359 37.2294 93 0.08 70
IV.GAVE.EHZ. 2021-08-18T14:14:02.28 0.3 undecidable manual S 207 37.7289 93 0.15 70
IV.MTRA.EHZ. 2021-08-18T14:14:01.13 0.3 undecidable manual S 138 35.3424 93 -0.38 66
IV.ASSB.HHZ. 2021-08-18T14:14:01.70 0.3 undecidable manual S 279 36.741 93 -0.18 69
IT.FOPC.HGN. 2021-08-18T14:14:01.14 0.3 undecidable manual S 265 32.8449 94 0.29 68
IV.FRON.EHZ. 2021-08-18T14:14:01.08 0.6 undecidable manual P 332 65.7897 91 -0.08 44
IV.ARVD.HHZ. 2021-08-18T14:14:00.19 0.6 negative manual P 347 57.498 92 0.3 43
IV.ATFO.HHZ. 2021-08-18T14:14:00.51 0.1 negative manual P 314 59.8956 92 0.26 87
IV.CAMP.HHE. 2021-08-18T14:13:59.37 0.1 undecidable manual P 154 56.499 92 -0.37 84
IV.TERO.HHZ. 2021-08-18T14:13:59.95 0.6 undecidable manual P 135 57.6978 92 0.02 46
IV.MURB.HHZ. 2021-08-18T14:13:59.52 0.6 undecidable manual P 303 55.7997 92 -0.11 45
IV.SSM1.HNZ. 2021-08-18T14:13:59.19 0.6 undecidable manual S 12 26.6511 95 0 48
IV.SAP2.EHZ. 2021-08-18T14:13:59.53 0.3 undecidable manual S 64 26.2515 96 0.43 66
IV.MF5.EHZ. 2021-08-18T14:13:59.93 0.3 undecidable manual S 91 28.6491 95 0.2 69
IV.RM33.EHZ. 2021-08-18T14:13:59.38 0.6 undecidable manual P 171 54.501 92 -0.05 45
IV.MOMA.HHZ. 2021-08-18T14:13:58.44 0.6 undecidable manual P 244 48.4182 92 -0.06 46
IV.MMO1.EHZ. 2021-08-18T14:13:57.28 0.3 undecidable manual S 120 20.7681 99 -0.35 68
IV.CING.HHZ. 2021-08-18T14:13:57.58 0.3 undecidable manual P 10 42.9237 92 -0.07 70
IV.MDAR.HNZ. 2021-08-18T14:13:57.72 0.6 undecidable manual S 8 22.2555 98 -0.3 46
IV.PIO1.HNZ. 2021-08-18T14:13:57.98 0.3 undecidable manual S 334 22.755 97 -0.17 71
IV.GUMA.HHZ. 2021-08-18T14:13:57.79 0.3 undecidable manual S 68 20.0688 100 0.35 68
IV.FOSV.EHZ. 2021-08-18T14:13:57.73 0.3 undecidable manual P 320 43.5231 92 -0.01 70
IV.LNSS.HNZ. 2021-08-18T14:13:57.46 0.1 undecidable manual P 187 43.7229 92 -0.31 87
IV.ATCC.EHZ. 2021-08-18T14:13:57.76 0.1 undecidable manual P 299 43.3233 92 0.05 93
IV.SMA1.EHN. 2021-08-18T14:13:57.76 0.1 undecidable manual P 155 44.4222 92 -0.12 91
IV.SEF1.HNZ. 2021-08-18T14:13:57.68 0.3 undecidable manual S 323 21.2676 99 -0.1 72
IV.MNTT.EHZ. 2021-08-18T14:13:57.67 0.3 undecidable manual P 79 40.3263 93 0.42 65
IV.T1299.HNN. 2021-08-18T14:13:57.69 0.1 undecidable manual P 160 42.4242 92 0.12 92
IV.GAVE.EHZ. 2021-08-18T14:13:56.79 0.3 undecidable manual P 207 37.7289 93 -0.05 70
IV.MML1.EHZ. 2021-08-18T14:13:56.42 0.3 undecidable manual S 320 17.1717 105 -0.28 70
IV.MTRA.EHZ. 2021-08-18T14:13:56.23 0.1 undecidable manual P 138 35.3424 93 -0.25 90
IV.MNTP.HNZ. 2021-08-18T14:13:56.55 0.6 undecidable manual P 61 33.4443 94 0.37 44
IV.NRCA.HHZ. 2021-08-18T14:13:56.60 0.3 undecidable manual S 178 17.871 103 -0.26 69
IV.ASSB.HHZ. 2021-08-18T14:13:56.73 0.1 positive manual P 279 36.741 93 0.04 95
IV.CESI.HNZ. 2021-08-18T14:13:56.48 0.3 undecidable manual S 274 16.4724 106 -0.03 74
IT.FOPC.HGN. 2021-08-18T14:13:56.16 0.1 undecidable manual P 265 32.8449 94 0.06 95
IV.EL6.EHZ. 2021-08-18T14:13:56.65 0.3 undecidable manual P 359 37.2294 93 -0.12 70
IV.PF6.EHZ. 2021-08-18T14:13:56.34 0.3 undecidable manual S 24 17.4714 104 -0.43 68
IV.CSP1.EHZ. 2021-08-18T14:13:55.49 0.6 undecidable manual S 36 13.4754 115 -0.27 47
IV.MF5.EHZ. 2021-08-18T14:13:55.74 0.1 positive manual P 91 28.6491 95 0.29 91
IV.MC2.EHZ. 2021-08-18T14:13:55.34 0.3 undecidable manual S 144 11.3775 123 0.07 73
IV.SAP2.EHZ. 2021-08-18T14:13:55.26 0.3 undecidable manual P 64 26.2515 96 0.17 70
IV.SEF1.HNZ. 2021-08-18T14:13:54.23 0.1 undecidable manual P 323 21.2676 99 -0.09 96
IV.FEMA.HNZ. 2021-08-18T14:13:54.38 0.3 undecidable manual S 233 5.7942 148 0.15 72
IV.MMO1.EHZ. 2021-08-18T14:13:54.13 0.1 positive manual P 120 20.7681 99 -0.11 95
IT.MTCL.HGZ. 2021-08-18T14:13:54.57 0.3 undecidable manual S 270 8.6802 134 -0.15 73
IV.MDAR.HNZ. 2021-08-18T14:13:54.32 0.1 undecidable manual P 8 22.2555 98 -0.15 95
IV.PIO1.HNZ. 2021-08-18T14:13:54.20 0.3 undecidable manual P 334 22.755 97 -0.34 68
IV.GUMA.HHZ. 2021-08-18T14:13:54.32 0.1 positive manual P 68 20.0688 100 0.19 94
IV.SSM1.HNZ. 2021-08-18T14:13:54.94 0.1 undecidable manual P 12 26.6511 95 -0.2 93
IV.FDMO.HHZ. 2021-08-18T14:13:53.79 0.3 undecidable manual S 341 4.995 152 -0.33 72
IV.CESI.HNZ. 2021-08-18T14:13:53.79 0.1 undecidable manual P 274 16.4724 106 0.19 95
IV.PF6.EHZ. 2021-08-18T14:13:53.56 0.1 undecidable manual P 24 17.4714 104 -0.19 95
IV.CSP1.EHZ. 2021-08-18T14:13:53.13 0.1 undecidable manual P 36 13.4754 115 -0.03 99
IV.MML1.EHZ. 2021-08-18T14:13:53.79 0.1 positive manual P 320 17.1717 105 0.09 97
IV.NRCA.HHZ. 2021-08-18T14:13:53.81 0.3 undecidable manual P 178 17.871 103 0.01 74
IV.MC2.EHZ. 2021-08-18T14:13:52.97 1.0 undecidable manual P 144 11.3775 123 0.09 24
IV.FDMO.HHZ. 2021-08-18T14:13:52.19 0.1 undecidable manual P 341 4.995 152 -0.02 100
IV.FEMA.HNZ. 2021-08-18T14:13:52.48 0.1 undecidable manual P 233 5.7942 148 0.2 96
IT.MTCL.HGZ. 2021-08-18T14:13:52.65 0.1 undecidable manual P 270 8.6802 134 0.09 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:2.2 0.002335 1.04 AML other m 2021-08-18T14:13:53.91
IV.FDMO.HHN. ML:2.4 0.0033250000000000003 0.14 AML other m 2021-08-18T14:13:54.16
IV.FEMA.HNN. ML:2.5 0.003975 0.28 AML other m 2021-08-18T14:13:54.65
IV.FEMA.HNE. ML:2.5 0.004345000000000001 0.54 AML other m 2021-08-18T14:13:56.65
IV.CESI.HHE. ML:2.3 0.001545 1.32 AML other m 2021-08-18T14:13:56.18
IV.CESI.HNE. ML:2.2 0.00138 1.32 AML other m 2021-08-18T14:13:56.18
IV.MML1.HNN. ML:2.7 0.0038 1.84 AML other m 2021-08-18T14:13:56.96
IV.MML1.EHN. ML:2.7 0.00375 1.86 AML other m 2021-08-18T14:13:56.97
IV.CESI.HNN. ML:2.4 0.0023 1.6 AML other m 2021-08-18T14:13:56.99
IV.CESI.HHN. ML:2.5 0.0024100000000000002 1.6 AML other m 2021-08-18T14:13:56.99
IV.NRCA.HHE. ML:2.1 0.00108 0.08 AML other m 2021-08-18T14:13:57.17
IV.MML1.EHE. ML:2.4 0.0018449999999999999 0.16 AML other m 2021-08-18T14:13:57.68
IV.MML1.HNE. ML:2.4 0.001835 0.16 AML other m 2021-08-18T14:13:57.68
IV.NRCA.HHN. ML:2.2 0.00113 0.14 AML other m 2021-08-18T14:13:58.19
IV.TERO.HHE. ML:2.4 0.0004904999999999999 1.04 AML other m 2021-08-18T14:13:59.38
IV.MF5.EHN. ML:2.1 0.000696 0.16 AML other m 2021-08-18T14:14:00.68
IV.MF5.EHE. ML:2.1 0.000687 1 AML other m 2021-08-18T14:14:01.64
IV.MTRA.HNN. ML:2.2 0.0005785 0.58 AML other m 2021-08-18T14:14:01.31
IV.MTRA.EHN. ML:2.1 0.0005295 0.52 AML other m 2021-08-18T14:14:01.86
IV.ASSB.HHE. ML:2.0 0.00041999999999999996 0.32 AML other m 2021-08-18T14:14:02.48
IV.MTRA.EHE. ML:2.1 0.000468 1.1 AML other m 2021-08-18T14:14:02.98
IV.MTRA.HNE. ML:2.1 0.00048650000000000006 1.1 AML other m 2021-08-18T14:14:02.98
IV.GAVE.EHN. ML:2.1 0.0004355 0.2 AML other m 2021-08-18T14:14:02.96
IV.GAVE.EHE. ML:2.2 0.0006594999999999999 1.5 AML other m 2021-08-18T14:14:03.95
IV.EL6.EHE. ML:2.1 0.00048550000000000004 1.1 AML other m 2021-08-18T14:14:03.76
IV.ASSB.HHN. ML:1.9 0.0003175 0.92 AML other m 2021-08-18T14:14:04.14
IV.EL6.EHN. ML:2.1 0.00041900000000000005 0.64 AML other m 2021-08-18T14:14:04.22
IV.FOSV.EHE. ML:2.0 0.0003085 0.36 AML other m 2021-08-18T14:14:04.46
IV.CING.HHN. ML:1.8 0.000174 0.42 AML other m 2021-08-18T14:14:04.26
IV.FOSV.EHN. ML:2.3 0.0005740000000000001 0.34 AML other m 2021-08-18T14:14:04.53
IV.CING.HHE. ML:1.8 0.00021500000000000002 0.28 AML other m 2021-08-18T14:14:04.73
IV.ATCC.EHE. ML:2.2 0.0004485 0.32 AML other m 2021-08-18T14:14:04.75
IV.ATCC.EHN. ML:2.0 0.0002925 0.28 AML other m 2021-08-18T14:14:05.56
IV.MNTT.EHE. ML:2.9 0.0028 0.16 AML other m 2021-08-18T14:14:06.56
IV.MNTT.EHN. ML:2.6 0.0013650000000000001 0.2 AML other m 2021-08-18T14:14:06.80
IV.MOMA.HHN. ML:1.7 0.0001415 1.64 AML other m 2021-08-18T14:14:06.84
IV.MOMA.HHE. ML:2.0 0.000257 0.18 AML other m 2021-08-18T14:14:07.67
IV.RM33.EHN. ML:1.7 0.000115 0.86 AML other m 2021-08-18T14:14:08.14
IV.TERO.HHN. ML:1.9 0.0001525 1.22 AML other m 2021-08-18T14:14:09.15
IV.ARVD.HHE. ML:1.7 0.0000983 1.48 AML other m 2021-08-18T14:14:10.01
IV.ARVD.HHN. ML:1.5 0.0000732 0.94 AML other m 2021-08-18T14:14:10.51
IV.ATFO.HHE. ML:1.7 0.0000926 0.7 AML other m 2021-08-18T14:14:11.43
IV.ATFO.HHN. ML:1.6 0.00007825 1.3 AML other m 2021-08-18T14:14:12.34
IV.PIEI.HHN. ML:1.7 0.0000733 0.42 AML other m 2021-08-18T14:14:14.12
IV.RM33.EHE. ML:1.6 0.00009875 0.74 AML other m 2021-08-18T14:14:15.49
IV.PIEI.HHE. ML:1.7 0.0000774 0.84 AML other m 2021-08-18T14:14:16.92
IV.VCEL.EHE. ML:2.5 0.0003375 0.06 AML other m 2021-08-18T14:14:17.67
IV.VCEL.EHN. ML:2.2 0.000186 0.74 AML other m 2021-08-18T14:14:18.58
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
Waveforms Seismic signals in miniseed + resp format Download