Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 31-03-2020 and time 21:45:33 (Italy) in region 3 km NW Ussita (MC)

A magnitude ML 1.7 earthquake occured in region: 3 km NW Ussita (MC), on

  • 31-03-2020 19:45:33 (UTC)
  • 31-03-2020 21:45:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9700, 13.1200 at 10 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
Ussita MC 3 444 444
Visso MC 5 1107 1551
Fiordimonte MC 8 202 1753
Fiastra MC 8 559 2312
Acquacanina MC 8 121 2433
Castelsantangelo sul Nera MC 9 281 2714
Bolognola MC 9 142 2856
Monte Cavallo MC 10 145 3001
Pieve Torina MC 10 1458 4459
Pievebovigliana MC 11 866 5325
Preci PG 12 724 6049
Muccia MC 14 915 6964
Sarnano MC 17 3264 10228
Serravalle di Chienti MC 18 1070 11298
Sellano PG 18 1079 12377
Montefortino FM 18 1178 13555
Montemonaco AP 19 604 14159
Camerino MC 19 6974 21133
Cessapalombo MC 19 512 21645
Amandola FM 19 3629 25274
Norcia PG 20 4957 30231

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
59 Km NW of Teramo (54892 inhabitants)
60 Km NE of Terni (111501 inhabitants)
61 Km E of Perugia (166134 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
98 Km S of Fano (60888 inhabitants)
98 Km NW of Montesilvano (53738 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 1.7 2020-03-31
19:45:33		 42.9702 13.1203 10 2020-07-18
21:08:33		 Bollettino Sismico Italiano INGV 78319401
Reviewed
Rev100 		ML 1.7 2020-03-31
19:45:33		 42.9712 13.1233 10 2020-03-31
20:23:56		 Sala Sismica INGV-Roma 77733431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-31 19:45:33 ± 0.03
Latitude 42.9702 ± 0.0018
Longitude 13.1203 ± 0.0025
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 78319401

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 228
Semi-minor axis of confidence ellipse (meter) 79
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 69
Circular confidence region, given by single value of horizontal uncertainty (meter) 230.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 30
Number of associated phases, regardless of their use for origin computation 71
Number of defining phases 71
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.05216
Epicentral distance of station farthest from the epicenter (degree) 0.70777
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 38
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 78319401
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-04-17 13:06:49

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 77733431
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-31 20:23:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FRON.EHZ. 2020-03-31T19:45:54.31 0.3 undecidable manual S 332 68.5758 50 0.33 64
IV.ARVD.HHZ. 2020-03-31T19:45:52.16 0.3 undecidable manual S 346 60.2952 50 0.39 64
IV.CESX.HHN. 2020-03-31T19:45:51.50 0.3 undecidable manual S 227 59.0964 50 0.05 69
IV.TERO.HHZ. 2020-03-31T19:45:50.71 0.3 undecidable manual S 134 55.1004 50 0.35 65
IV.RM33.EHZ. 2020-03-31T19:45:49.84 0.3 undecidable manual S 171 51.7038 50 0.38 65
IV.ARRO.EHN. 2020-03-31T19:45:49.85 0.6 undecidable manual S 214 52.1034 50 0.28 44
IV.MOMA.HHE. 2020-03-31T19:45:48.71 0.3 undecidable manual S 248 48.4182 50 0.14 69
IV.ATCC.EHZ. 2020-03-31T19:45:48.23 0.3 undecidable manual S 302 45.621 50 0.38 66
IV.CING.HNZ. 2020-03-31T19:45:48.03 0.3 undecidable manual S 8 45.4212 50 0.25 68
IV.FOSV.EHZ. 2020-03-31T19:45:48.24 0.3 undecidable manual S 321 46.3203 50 0.22 68
IV.EL6.EHZ. 2020-03-31T19:45:46.63 0.6 undecidable manual S 358 39.9267 50 0.32 45
IV.LNSS.HNZ. 2020-03-31T19:45:46.47 0.3 undecidable manual S 189 41.2254 50 -0.21 69
IV.T1299.HNN. 2020-03-31T19:45:46.58 0.3 undecidable manual S 160 39.5271 50 0.37 67
IV.SMA1.EHZ. 2020-03-31T19:45:46.73 0.3 undecidable manual S 155 41.5251 50 -0.02 72
IV.PIEI.HHZ. 2020-03-31T19:45:46.45 0.1 undecidable manual P 323 78.5658 50 -0.22 86
IT.FOPC.HGE. 2020-03-31T19:45:45.06 0.6 undecidable manual S 270 33.8439 50 0.36 45
IV.SNTG.HHZ. 2020-03-31T19:45:44.77 0.3 undecidable manual S 335 34.8429 50 -0.18 70
IV.MTRA.EHZ. 2020-03-31T19:45:44.05 0.3 undecidable manual S 136 32.6451 50 -0.33 68
IV.FRON.EHZ. 2020-03-31T19:45:44.85 0.3 undecidable manual P 332 68.5758 50 -0.28 65
IV.CESX.HHN. 2020-03-31T19:45:43.54 0.3 undecidable manual P 227 59.0964 50 -0.13 68
IV.ARVD.HHZ. 2020-03-31T19:45:43.80 0.1 undecidable manual P 346 60.2952 50 -0.06 92
IV.SSM1.HNZ. 2020-03-31T19:45:43.39 0.6 undecidable manual S 9 29.0487 50 -0.03 49
IV.SSFR.HHZ. 2020-03-31T19:45:43.41 0.3 undecidable manual P 332 58.497 50 -0.17 67
IV.SAP2.EHZ. 2020-03-31T19:45:43.14 0.3 undecidable manual S 58 26.6511 50 0.37 68
IV.FIU1.HNZ. 2020-03-31T19:45:43.05 0.3 undecidable manual S 328 28.6491 50 -0.27 70
IV.ARRO.EHN. 2020-03-31T19:45:42.47 0.3 undecidable manual P 214 52.1034 50 -0.12 69
IV.SEF1.HNZ. 2020-03-31T19:45:42.14 0.1 undecidable manual S 325 24.0537 50 0.05 98
IV.TERO.HHZ. 2020-03-31T19:45:42.80 0.3 undecidable manual P 134 55.1004 50 -0.25 67
IV.RM33.EHZ. 2020-03-31T19:45:42.43 0.3 undecidable manual P 171 51.7038 50 -0.1 69
IV.ATCC.EHZ. 2020-03-31T19:45:41.47 0.3 undecidable manual P 302 45.621 50 -0.13 70
IV.GUMA.HNZ. 2020-03-31T19:45:41.33 0.3 undecidable manual S 59 20.2686 117 0.38 69
IV.CING.HNZ. 2020-03-31T19:45:41.57 0.3 undecidable manual P 8 45.4212 50 0.01 71
IV.FOSV.EHZ. 2020-03-31T19:45:41.49 0.1 undecidable manual P 321 46.3203 50 -0.2 91
IV.MDAR.HNZ. 2020-03-31T19:45:41.92 0.3 undecidable manual S 4 24.753 50 -0.35 69
IV.MNTT.EHZ. 2020-03-31T19:45:41.12 0.6 undecidable manual P 75 39.9267 50 0.41 44
IV.MOMA.HHE. 2020-03-31T19:45:41.93 0.1 undecidable manual P 248 48.4182 50 -0.09 93
IV.LNSS.HNZ. 2020-03-31T19:45:40.68 0.3 undecidable manual P 189 41.2254 50 -0.24 69
IV.T1299.HNN. 2020-03-31T19:45:40.63 0.3 undecidable manual P 160 39.5271 50 -0.02 72
IV.MMO1.EHZ. 2020-03-31T19:45:40.14 0.3 undecidable manual S 115 18.4704 119 -0.28 71
IV.SMA1.EHZ. 2020-03-31T19:45:40.65 0.3 undecidable manual P 155 41.5251 50 -0.31 67
IV.CESI.HHZ. 2020-03-31T19:45:40.31 0.3 undecidable manual S 283 17.9709 120 0.07 74
IV.MNTP.HNZ. 2020-03-31T19:45:40.21 0.1 undecidable manual P 57 33.8439 50 0.44 89
IV.PF6.EHZ. 2020-03-31T19:45:40.35 0.3 undecidable manual S 18 19.5693 118 -0.39 69
IV.MML1.HNZ. 2020-03-31T19:45:40.60 0.3 undecidable manual S 323 19.9689 118 -0.26 71
IV.EL6.EHZ. 2020-03-31T19:45:40.55 0.3 undecidable manual P 358 39.9267 50 -0.16 70
IV.FIU1.HNZ. 2020-03-31T19:45:39.34 0.1 undecidable manual P 328 28.6491 50 0.37 91
IV.SNTG.HHZ. 2020-03-31T19:45:39.59 0.1 undecidable manual P 335 34.8429 50 -0.33 91
IV.NRCA.HHZ. 2020-03-31T19:45:39.22 0.3 undecidable manual S 182 15.1737 124 -0.21 72
IT.FOPC.HGE. 2020-03-31T19:45:39.70 0.1 undecidable manual P 270 33.8439 50 -0.08 96
IV.SSM1.HNZ. 2020-03-31T19:45:39.08 0.1 undecidable manual P 9 29.0487 50 0.04 97
IV.CSP1.EHZ. 2020-03-31T19:45:39.38 0.3 undecidable manual S 27 15.1737 124 -0.05 75
IV.MTRA.EHZ. 2020-03-31T19:45:39.18 0.1 undecidable manual P 136 32.6451 50 -0.41 89
IV.SAP2.EHZ. 2020-03-31T19:45:38.81 0.1 undecidable manual P 58 26.6511 50 0.15 96
IV.MC2.EHZ. 2020-03-31T19:45:38.03 0.3 undecidable manual S 139 8.5803 141 0.3 72
IV.MF5.EHZ. 2020-03-31T19:45:38.82 0.1 undecidable manual P 86 27.6501 50 0 98
IT.MTCL.HGZ. 2020-03-31T19:45:38.20 0.3 undecidable manual S 285 10.1787 136 0.1 74
IV.MDAR.HNZ. 2020-03-31T19:45:38.19 0.1 undecidable manual P 4 24.753 50 -0.19 95
IV.PF6.EHZ. 2020-03-31T19:45:37.27 0.1 undecidable manual P 18 19.5693 118 -0.22 95
IV.MML1.HNZ. 2020-03-31T19:45:37.47 0.1 undecidable manual P 323 19.9689 118 -0.09 98
IV.SEF1.HNZ. 2020-03-31T19:45:37.87 0.1 undecidable manual P 325 24.0537 50 -0.41 91
IV.MMO1.EHZ. 2020-03-31T19:45:37.19 0.1 undecidable manual P 115 18.4704 119 -0.12 97
IV.GUMA.HNZ. 2020-03-31T19:45:37.74 0.3 undecidable manual P 59 20.2686 117 0.13 73
IV.FEMA.HNZ. 2020-03-31T19:45:37.56 0.6 undecidable manual S 261 5.7942 151 0.38 47
IV.CESI.HHZ. 2020-03-31T19:45:37.26 0.1 undecidable manual P 283 17.9709 120 0.05 99
IV.FDMO.HHZ. 2020-03-31T19:45:37.61 0.3 undecidable manual S 340 7.881 143 0.04 76
IV.NRCA.HHZ. 2020-03-31T19:45:36.71 0.1 undecidable manual P 182 15.1737 124 -0.03 100
IV.CSP1.EHZ. 2020-03-31T19:45:36.76 0.1 undecidable manual P 27 15.1737 124 0.02 100
IT.MTCL.HGZ. 2020-03-31T19:45:36.10 0.1 undecidable manual P 285 10.1787 136 0.13 99
IV.FEMA.HNZ. 2020-03-31T19:45:35.75 0.1 undecidable manual P 261 5.7942 151 0.31 96
IV.FDMO.HHZ. 2020-03-31T19:45:35.78 0.1 undecidable manual P 340 7.881 143 0.12 99
IV.MC2.EHZ. 2020-03-31T19:45:35.98 1.0 undecidable manual P 139 8.5803 141 0.22 24
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHE. ML:2.0 0.0010834999999999998 1.18 AML other m 2020-03-31T19:45:39.65
IV.CSP1.EHN. ML:1.8 0.000651 0.26 AML other m 2020-03-31T19:45:39.53
IV.CESI.HHE. ML:1.9 0.0006065 0.4 AML other m 2020-03-31T19:45:40.71
IV.CESI.HHN. ML:2.0 0.0008300000000000001 0.22 AML other m 2020-03-31T19:45:40.55
IV.SAP2.EHN. ML:2.7 0.002625 1.44 AML other m 2020-03-31T19:45:43.72
IV.SAP2.EHE. ML:1.8 0.00038250000000000003 0.16 AML other m 2020-03-31T19:45:44.08
IV.MTRA.EHN. ML:1.9 0.000314 0.52 AML other m 2020-03-31T19:45:44.24
IV.MTRA.EHE. ML:1.8 0.000305 0.66 AML other m 2020-03-31T19:45:44.30
IV.SNTG.HHE. ML:1.4 0.00009070000000000001 1.3 AML other m 2020-03-31T19:45:45.24
IV.EL6.EHN. ML:1.6 0.0001495 0.42 AML other m 2020-03-31T19:45:46.27
IV.SNTG.HHN. ML:1.4 0.0000977 0.72 AML other m 2020-03-31T19:45:47.90
IV.EL6.EHE. ML:1.6 0.00014705000000000002 0.12 AML other m 2020-03-31T19:45:47.82
IV.FOSV.EHE. ML:1.4 0.00007315 0.26 AML other m 2020-03-31T19:45:48.57
IV.FOSV.EHN. ML:1.7 0.0001465 0.36 AML other m 2020-03-31T19:45:48.61
IV.MNTT.EHN. ML:2.0 0.00038549999999999994 0.8 AML other m 2020-03-31T19:45:48.56
IV.ATCC.EHE. ML:1.5 0.00009285 1.4 AML other m 2020-03-31T19:45:49.07
IV.ATCC.EHN. ML:1.6 0.0001101 0.14 AML other m 2020-03-31T19:45:49.19
IV.MNTT.EHE. ML:2.1 0.000402 0.82 AML other m 2020-03-31T19:45:50.57
IV.TERO.HHN. ML:1.5 0.00007555000000000001 0.76 AML other m 2020-03-31T19:45:51.44
IV.TERO.HHE. ML:1.5 0.00008044999999999999 0.12 AML other m 2020-03-31T19:45:52.06
IV.SSFR.HHE. ML:1.8 0.000142 1.24 AML other m 2020-03-31T19:45:53.19
IV.SSFR.HHN. ML:1.8 0.00011899999999999999 0.2 AML other m 2020-03-31T19:45:53.89
IV.FRON.EHN. ML:1.6 0.0000615 0.48 AML other m 2020-03-31T19:45:57.17
IV.FRON.EHE. ML:1.6 0.000060799999999999994 0.56 AML other m 2020-03-31T19:45:58.43
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