Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 20-03-2020 and time 10:48:49 (Italy) in region 4 km S Montefalco (PG)

A magnitude ML 2.1 earthquake occured in region: 4 km S Montefalco (PG), on

  • 20-03-2020 09:48:49 (UTC)
  • 20-03-2020 10:48:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8570, 12.6480 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
Castel Ritaldi PG 4 3278 3278
Montefalco PG 4 5679 8957
Giano dell'Umbria PG 6 3846 12803
Trevi PG 9 8469 21272
Bevagna PG 9 5081 26353
Gualdo Cattaneo PG 10 6155 32508
Campello sul Clitunno PG 11 2442 34950
Foligno PG 12 57155 92105
Massa Martana PG 14 3770 95875
Spello PG 15 8645 104520
Spoleto PG 16 38218 142738
Cannara PG 16 4305 147043
Collazzone PG 18 3473 150516

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km SW of Foligno (57155 inhabitants)
33 Km N of Terni (111501 inhabitants)
35 Km SE of Perugia (166134 inhabitants)
66 Km NE of Viterbo (67173 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
89 Km W of Teramo (54892 inhabitants)
92 Km SE of Arezzo (99543 inhabitants)
95 Km N of Guidonia Montecelio (88673 inhabitants)
100 Km N of Tivoli (56533 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 2020-03-20
09:48:49		 42.8573 12.648 9 2020-07-18
21:08:36		 Bollettino Sismico Italiano INGV 78968071
Reviewed
Rev100 		ML 2.1 2020-03-20
09:48:48		 42.8702 12.6085 11 2020-03-20
09:56:43		 Sala Sismica INGV-Roma 77404411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-20 09:48:49 ± 0.05
Latitude 42.8573 ± 0.0027
Longitude 12.6480 ± 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 78968071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 290
Semi-minor axis of confidence ellipse (meter) 276
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 260
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 61
Number of associated phases, regardless of their use for origin computation 65
Number of defining phases 47
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.76442
Number of stations at which the event was observed 46
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 58
Type of magnitude ML
Reference to an origin 78968071
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-05-09 03:12:26

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 58
Type of magnitude ML
Reference to an origin 77404411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-20 09:56:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CIGN.HHZ. 2020-03-20T09:49:51.29 3.0 undecidable manual Sn 0.73 0
IV.CMPO.HNZ. 2020-03-20T09:49:45.77 3.0 undecidable manual Sg 0.82 0
IV.MNTV.HNZ. 2020-03-20T09:49:34.77 3.0 undecidable manual Pn 2.91 0
IV.SRES.HHZ. 2020-03-20T09:49:11.65 3.0 undecidable manual S -0.57 0
IV.EL6.EHZ. 2020-03-20T09:49:09.83 3.0 undecidable manual S -0.36 0
IV.ATFO.HHZ. 2020-03-20T09:49:08.27 3.0 undecidable manual S 0.06 0
IV.ATVO.HHZ. 2020-03-20T09:49:08.75 3.0 undecidable manual S -0.89 0
IV.MMO1.EHZ. 2020-03-20T09:49:07.00 0.1 undecidable manual S 85 55.4001 50 0.15 91
IV.CSP1.EHZ. 2020-03-20T09:49:06.20 0.6 undecidable manual S 60 52.1034 50 0.21 45
IV.ATVA.EHE. 2020-03-20T09:49:06.40 0.6 undecidable manual S 328 55.2003 50 -0.41 43
IV.PARC.HHZ. 2020-03-20T09:49:06.29 3.0 positive manual P 0.22 0
IV.ATLO.EHE. 2020-03-20T09:49:06.80 0.1 undecidable manual S 339 54.4011 50 0.21 90
IV.MC2.EHZ. 2020-03-20T09:49:04.40 0.3 undecidable manual S 82 44.4222 50 0.49 65
IV.LNSS.HHZ. 2020-03-20T09:49:03.50 0.3 undecidable manual S 131 42.624 50 0.05 72
TV.SF14.HHN. 2020-03-20T09:49:03.79 1.0 undecidable manual P 263 84.8484 50 -0.12 22
IV.ATMC.EHE. 2020-03-20T09:49:03.11 0.3 undecidable manual P 331 75.0693 50 0.7 57
TV.SF13.HHN. 2020-03-20T09:49:03.93 1.0 undecidable manual P 267 83.7495 50 0.18 22
IV.BADI.EHZ. 2020-03-20T09:49:03.89 3.0 negative manual P 0.22 0
IV.MCIV.CHE. 2020-03-20T09:49:03.59 1.0 undecidable manual P 264 79.5648 50 0.5 20
IV.FDMO.HHZ. 2020-03-20T09:49:02.70 0.3 undecidable manual S 61 40.8258 50 -0.27 69
IV.FIAM.HHZ. 2020-03-20T09:49:02.69 3.0 negative manual P -0.33 0
IV.CAMP.HHZ. 2020-03-20T09:49:02.02 0.1 undecidable manual P 120 71.5728 50 0.16 89
IV.PIEI.HHZ. 2020-03-20T09:49:02.42 3.0 negative manual P -0.6 0
IV.MML1.HNN. 2020-03-20T09:49:02.00 0.3 undecidable manual S 43 38.7279 50 -0.4 67
IV.NRCA.HHZ. 2020-03-20T09:49:02.60 0.3 undecidable manual S 94 38.0286 50 0.39 67
IV.ATCC.EHZ. 2020-03-20T09:49:01.50 0.6 undecidable manual S 359 36.3414 50 -0.28 46
IV.ATPI.EHE. 2020-03-20T09:49:01.49 0.3 undecidable manual P 343 68.7756 50 0.05 68
IV.MF5.EHZ. 2020-03-20T09:49:01.90 0.3 undecidable manual P 77 67.4769 50 0.66 58
IV.TB02.DHZ.01 2020-03-20T09:49:00.21 0.6 undecidable manual P 341 60.0954 50 0.11 46
IV.TB03.DHZ.01 2020-03-20T09:49:00.69 0.3 undecidable manual P 342 63.3921 50 0.09 68
IV.FEMA.HNE. 2020-03-20T09:49:00.90 0.1 undecidable manual S 70 34.6431 50 -0.42 90
IV.EL6.EHZ. 2020-03-20T09:49:00.76 3.0 negative manual P -0.2 0
IV.ATVO.HHZ. 2020-03-20T09:49:00.64 3.0 negative manual P -0.01 0
IV.SMA1.EHZ. 2020-03-20T09:49:00.68 0.3 undecidable manual P 114 61.3941 50 0.38 65
IV.ARRO.EHZ. 2020-03-20T09:49:00.70 0.3 undecidable manual S 163 32.3454 50 0.01 74
IV.SACS.HHZ. 2020-03-20T09:49:00.66 3.0 negative manual P 0.07 0
IV.ATMI.HHZ. 2020-03-20T09:49:00.38 0.6 undecidable manual P 330 61.1943 50 0.11 46
IV.MMO1.EHZ. 2020-03-20T09:48:59.23 0.1 undecidable manual P 85 55.4001 50 -0.14 92
IV.ATVA.EHE. 2020-03-20T09:48:59.25 0.1 undecidable manual P 328 55.2003 50 -0.09 93
IV.CESX.HHZ. 2020-03-20T09:48:59.10 0.1 undecidable manual S 190 28.0497 108 -0.28 93
IV.RM33.EHZ. 2020-03-20T09:48:59.89 0.1 positive manual P 130 60.1953 50 -0.23 89
IV.SNTG.HHZ. 2020-03-20T09:48:58.53 3.0 negative manual P -0.12 0
IV.ATLO.EHE. 2020-03-20T09:48:58.94 0.1 undecidable manual P 339 54.4011 50 -0.28 89
IV.CESI.HHZ. 2020-03-20T09:48:58.60 0.3 undecidable manual S 52 26.5512 109 -0.27 70
IV.FOSV.EHZ. 2020-03-20T09:48:58.33 3.0 positive manual P -0.24 0
IV.CSP1.EHZ. 2020-03-20T09:48:58.93 0.1 undecidable manual P 60 52.1034 50 0.06 94
IV.MC2.EHZ. 2020-03-20T09:48:57.90 0.1 positive manual P 82 44.4222 50 0.22 92
IV.MURB.HHZ. 2020-03-20T09:48:57.91 3.0 positive manual P -0.17 0
IV.LNSS.HHZ. 2020-03-20T09:48:57.22 0.1 positive manual P 131 42.624 50 -0.19 93
IV.MGAB.HHZ. 2020-03-20T09:48:57.87 3.0 negative manual P -0.02 0
IV.FEMA.HNE. 2020-03-20T09:48:56.31 0.1 undecidable manual P 70 34.6431 50 0.13 95
IV.NRCA.HHZ. 2020-03-20T09:48:56.57 0.3 undecidable manual P 94 38.0286 50 -0.12 71
IV.ATCC.EHZ. 2020-03-20T09:48:56.19 0.1 positive manual P 359 36.3414 50 -0.25 93
IV.FDMO.HHZ. 2020-03-20T09:48:56.98 0.1 positive manual P 61 40.8258 50 -0.15 94
IV.MML1.HNN. 2020-03-20T09:48:56.56 0.1 positive manual P 43 38.7279 50 -0.24 92
IV.ARRO.EHZ. 2020-03-20T09:48:55.71 0.1 negative manual P 163 32.3454 50 -0.1 96
IT.MTCL.HGZ. 2020-03-20T09:48:55.83 0.3 undecidable manual P 62 32.3454 50 0.01 74
IV.CESI.HHZ. 2020-03-20T09:48:54.67 0.1 positive manual P 52 26.5512 109 -0.09 97
IT.FOPC.HGZ. 2020-03-20T09:48:54.80 0.1 undecidable manual S 20 13.2756 124 0.08 100
IV.CESX.HHZ. 2020-03-20T09:48:54.82 0.1 positive manual P 190 28.0497 108 -0.24 94
IV.MOMA.HHZ. 2020-03-20T09:48:53.50 0.3 undecidable manual S 227 8.6802 136 0 77
IT.GNU.HGZ. 2020-03-20T09:48:53.50 0.3 undecidable manual S 227 8.6802 136 0 77
IT.FOPC.HGZ. 2020-03-20T09:48:52.60 0.1 undecidable manual P 20 13.2756 124 0.23 97
IV.MOMA.HHZ. 2020-03-20T09:48:51.83 0.1 positive manual P 227 8.6802 136 0.16 99
IT.GNU.HGZ. 2020-03-20T09:48:51.82 0.1 positive manual P 227 8.6802 136 0.15 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HNE. ML:2.9 0.010899999999999998 1.18 AML other m 2020-03-20T09:48:54.27
IV.MOMA.HHE. ML:2.9 0.011850000000000001 1.18 AML other m 2020-03-20T09:48:54.27
IV.MOMA.HHN. ML:2.7 0.007744999999999999 0.22 AML other m 2020-03-20T09:48:54.59
IV.MOMA.HNN. ML:2.7 0.0070999999999999995 0.22 AML other m 2020-03-20T09:48:54.60
IV.CESI.HHN. ML:1.9 0.0004515 1.66 AML other m 2020-03-20T09:48:59.00
IV.CESI.HHE. ML:1.7 0.0003025 0.24 AML other m 2020-03-20T09:48:59.77
IV.CESX.HHN. ML:2.4 0.00126 0.2 AML other m 2020-03-20T09:49:00.22
IV.CESX.HHE. ML:2.4 0.001315 0.58 AML other m 2020-03-20T09:49:01.30
IV.ARRO.EHE. ML:2.3 0.000864 0.36 AML other m 2020-03-20T09:49:01.27
IV.ARRO.EHN. ML:2.1 0.000612 0.26 AML other m 2020-03-20T09:49:01.97
IV.ATCC.EHN. ML:2.3 0.0008065 0.28 AML other m 2020-03-20T09:49:02.13
IV.ATCC.EHE. ML:2.3 0.000878 1.52 AML other m 2020-03-20T09:49:02.14
IV.NRCA.HHE. ML:2.1 0.000477 0.16 AML other m 2020-03-20T09:49:03.74
IV.LNSS.HHN. ML:2.5 0.0010255000000000002 0.4 AML other m 2020-03-20T09:49:04.47
IV.NRCA.HHN. ML:2.0 0.000366 0.14 AML other m 2020-03-20T09:49:04.64
IV.LNSS.HHE. ML:2.6 0.0013174999999999999 1.46 AML other m 2020-03-20T09:49:04.87
IV.MURB.HNN. ML:2.8 0.00177 0.24 AML other m 2020-03-20T09:49:05.30
IV.MURB.HHN. ML:2.8 0.0017999999999999997 0.22 AML other m 2020-03-20T09:49:05.30
IV.FDMO.HHN. ML:1.8 0.000193 0.18 AML other m 2020-03-20T09:49:05.45
IV.MURB.HNE. ML:2.7 0.0015300000000000001 0.32 AML other m 2020-03-20T09:49:06.06
IV.MURB.HHE. ML:2.8 0.0017150000000000002 0.28 AML other m 2020-03-20T09:49:06.07
IV.SNTG.HHE. ML:1.6 0.00009845000000000001 1.84 AML other m 2020-03-20T09:49:06.92
IV.FOSV.EHE. ML:1.9 0.00019350000000000001 1.78 AML other m 2020-03-20T09:49:06.92
IV.SNTG.HHN. ML:1.7 0.00014399999999999998 0.84 AML other m 2020-03-20T09:49:07.91
IV.FOSV.EHN. ML:1.7 0.00012875 1 AML other m 2020-03-20T09:49:07.11
IV.MGAB.HNE. ML:1.9 0.00023799999999999998 1.58 AML other m 2020-03-20T09:49:08.01
IV.CSP1.EHN. ML:2.0 0.0002495 1.72 AML other m 2020-03-20T09:49:09.03
IV.ATFO.HHE. ML:2.0 0.000251 1.78 AML other m 2020-03-20T09:49:09.98
IV.ATVO.HHE. ML:1.9 0.0001615 0.18 AML other m 2020-03-20T09:49:09.76
IV.RM33.EHE. ML:2.2 0.00035749999999999996 0.42 AML other m 2020-03-20T09:49:09.98
IV.RM33.EHN. ML:2.2 0.00036150000000000006 1.18 AML other m 2020-03-20T09:49:10.79
IV.ATFO.HHN. ML:1.9 0.0001955 0.22 AML other m 2020-03-20T09:49:10.10
IV.SMA1.EHN. ML:2.2 0.000322 0.22 AML other m 2020-03-20T09:49:10.48
IV.RM33.HNE. ML:2.3 0.0003875 0.34 AML other m 2020-03-20T09:49:10.78
IV.SMA1.EHE. ML:2.3 0.000384 1.1 AML other m 2020-03-20T09:49:10.10
IV.MGAB.HHN. ML:2.2 0.0004465 0.28 AML other m 2020-03-20T09:49:10.74
IV.MGAB.HNN. ML:2.2 0.0004345 0.38 AML other m 2020-03-20T09:49:10.94
IV.EL6.EHE. ML:2.3 0.00037 0.22 AML other m 2020-03-20T09:49:10.75
IV.MGAB.HHE. ML:2.0 0.00028000000000000003 1.34 AML other m 2020-03-20T09:49:11.97
IV.RM33.HNN. ML:2.4 0.000488 0.88 AML other m 2020-03-20T09:49:11.78
IV.FDMO.HHE. ML:1.8 0.0001885 0.36 AML other m 2020-03-20T09:49:11.53
IV.ATVO.HHN. ML:1.8 0.0001152 1.68 AML other m 2020-03-20T09:49:12.84
IV.SRES.HHN. ML:1.8 0.00010650000000000001 0.72 AML other m 2020-03-20T09:49:13.48
IV.FIAM.HHE. ML:1.8 0.0000843 1.18 AML other m 2020-03-20T09:49:13.19
IV.CSP1.EHE. ML:2.0 0.0002445 0.4 AML other m 2020-03-20T09:49:14.49
IV.SRES.HHE. ML:1.9 0.000145 0.96 AML other m 2020-03-20T09:49:15.27
IV.SACS.HHE. ML:1.6 0.00008335 0.48 AML other m 2020-03-20T09:49:15.74
IV.PIEI.HHE. ML:1.9 0.0001235 0.36 AML other m 2020-03-20T09:49:15.71
IV.CAMP.HHE. ML:1.7 0.00008094999999999999 1.44 AML other m 2020-03-20T09:49:15.94
IV.CAMP.HHN. ML:1.8 0.00008854999999999998 1.42 AML other m 2020-03-20T09:49:15.95
IV.PIEI.HHN. ML:1.8 0.0000844 1.78 AML other m 2020-03-20T09:49:16.09
IV.EL6.EHN. ML:2.1 0.00024249999999999999 0.28 AML other m 2020-03-20T09:49:16.37
IV.FIAM.HHN. ML:1.7 0.0000815 0.32 AML other m 2020-03-20T09:49:16.48
IV.BADI.EHE. ML:2.0 0.0001375 0.48 AML other m 2020-03-20T09:49:17.02
IV.BADI.EHN. ML:2.0 0.000141 0.32 AML other m 2020-03-20T09:49:18.60
IV.SACS.HHN. ML:1.6 0.0000739 0.58 AML other m 2020-03-20T09:49:19.39
IV.PARC.HHN. ML:1.9 0.00009345000000000001 0.62 AML other m 2020-03-20T09:49:21.40
IV.PARC.HHE. ML:1.9 0.00008955 0.54 AML other m 2020-03-20T09:49:23.34
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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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