Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 03-12-2021 and time 18:22:35 (UTC) in region 4 km NE Ussita (MC)

A magnitude ML 1.9 earthquake occured in region: 4 km NE Ussita (MC), on

  • 03-12-2021 18:22:35 (UTC)
  • 03-12-2021 19:22:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9750, 13.1520 at 16 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 4 444 444
Acquacanina MC 7 121 565
Bolognola MC 7 142 707
Fiastra MC 7 559 1266
Visso MC 7 1107 2373
Fiordimonte MC 9 202 2575
Castelsantangelo sul Nera MC 9 281 2856
Pievebovigliana MC 11 866 3722
Pieve Torina MC 11 1458 5180
Monte Cavallo MC 12 145 5325
Sarnano MC 14 3264 8589
Preci PG 14 724 9313
Muccia MC 15 915 10228
Montefortino FM 16 1178 11406
Montemonaco AP 17 604 12010
Amandola FM 17 3629 15639
Cessapalombo MC 17 512 16151
Gualdo MC 18 815 16966
Camerino MC 19 6974 23940
Caldarola MC 19 1823 25763
Serravalle di Chienti MC 20 1070 26833
Camporotondo di Fiastrone MC 20 563 27396

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
57 Km NW of Teramo (54892 inhabitants)
62 Km NE of Terni (111501 inhabitants)
64 Km E of Perugia (166134 inhabitants)
72 Km N of L'Aquila (69753 inhabitants)
77 Km SW of Ancona (100861 inhabitants)
96 Km NW of Montesilvano (53738 inhabitants)
97 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 1.9 2021-12-03
18:22:35		 42.9753 13.1523 16 2022-03-30
13:04:33		 Bollettino Sismico Italiano INGV 100275781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-03 18:22:35 ± 0.06
Latitude 42.9753 ± 0.0027
Longitude 13.1523 ± 0.0049
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 100275781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 335
Semi-minor axis of confidence ellipse (meter) 126
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 76
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 50
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 44
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) 0.06925
Epicentral distance of station farthest from the epicenter (degree) 0.53330
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 24
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 30
Type of magnitude ML
Reference to an origin 100275781
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-28 16:07:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHZ. 2021-12-03T18:22:54.02 0.3 undecidable manual S 330 59.1963 96 0.67 58
IV.RM33.EHZ. 2021-12-03T18:22:51.98 0.6 undecidable manual S 174 52.0035 97 0.55 42
IV.TERO.HHZ. 2021-12-03T18:22:51.91 0.6 undecidable manual S 137 53.7018 97 0.03 46
IV.EL6.EHZ. 2021-12-03T18:22:48.69 0.6 undecidable manual S 354 39.4272 100 0.56 42
IV.SMA1.EHZ. 2021-12-03T18:22:48.64 0.6 undecidable manual S 159 41.0256 100 0.1 47
IV.GAVE.EHZ. 2021-12-03T18:22:48.37 0.6 undecidable manual S 214 37.8288 101 0.68 41
IV.ASSB.HHZ. 2021-12-03T18:22:48.78 0.6 undecidable manual S 281 40.7259 100 0.32 45
IV.SNTG.HHZ. 2021-12-03T18:22:47.17 0.6 undecidable manual S 331 35.4423 102 0.1 47
IV.SSFR.HHZ. 2021-12-03T18:22:45.55 0.3 undecidable manual P 330 59.1963 96 -0.06 68
IV.MTRA.EHZ. 2021-12-03T18:22:45.81 0.3 undecidable manual S 141 31.3464 104 -0.19 69
IV.SAP2.EHZ. 2021-12-03T18:22:44.42 0.3 undecidable manual S 56 24.1536 111 0.26 69
IV.MF5.EHZ. 2021-12-03T18:22:44.99 0.3 undecidable manual S 87 24.9528 110 0.61 63
IV.RM33.EHZ. 2021-12-03T18:22:44.44 0.3 undecidable manual P 174 52.0035 97 -0.05 69
IV.TERO.HHZ. 2021-12-03T18:22:44.48 0.3 undecidable manual P 137 53.7018 97 -0.27 65
IV.MOMA.HHZ. 2021-12-03T18:22:44.51 0.3 undecidable manual P 248 51.0156 97 0.17 68
IV.CESI.HHZ. 2021-12-03T18:22:43.37 0.3 undecidable manual S 279 20.3685 116 0.12 72
IV.CING.HHZ. 2021-12-03T18:22:43.21 0.3 undecidable manual P 4 44.5221 99 -0.14 69
IV.FOSV.EHZ. 2021-12-03T18:22:43.79 0.3 undecidable manual P 318 47.5191 98 -0.02 70
IV.MML1.EHZ. 2021-12-03T18:22:43.23 0.3 undecidable manual S 316 21.1677 115 -0.22 71
IV.MNTT.EHZ. 2021-12-03T18:22:42.60 0.6 undecidable manual P 75 37.2294 101 0.36 45
IV.NRCA.HNZ. 2021-12-03T18:22:42.12 0.3 undecidable manual S 191 16.0728 125 -0.13 73
IV.EL6.EHZ. 2021-12-03T18:22:42.47 0.3 undecidable manual P 354 39.4272 100 -0.12 70
IV.GUMA.HHZ. 2021-12-03T18:22:42.77 0.3 undecidable manual S 57 17.6712 121 0.15 72
IV.SMA1.EHZ. 2021-12-03T18:22:42.62 0.3 undecidable manual P 159 41.0256 100 -0.21 68
IV.GAVE.EHZ. 2021-12-03T18:22:42.33 0.3 undecidable manual P 214 37.8288 101 0 71
IV.ASSB.HHZ. 2021-12-03T18:22:42.72 0.3 undecidable manual P 281 40.7259 100 -0.06 70
IV.MTRA.EHZ. 2021-12-03T18:22:41.01 0.3 undecidable manual P 141 31.3464 104 -0.35 67
IV.SNTG.HHZ. 2021-12-03T18:22:41.75 0.3 undecidable manual P 331 35.4423 102 -0.23 69
IV.FEMA.HNZ. 2021-12-03T18:22:41.05 0.3 undecidable manual S 260 8.4804 146 0.22 71
IV.CSP1.EHZ. 2021-12-03T18:22:41.36 0.3 undecidable manual S 18 13.5753 131 -0.38 70
IT.MTCL.HGZ. 2021-12-03T18:22:41.44 0.3 undecidable manual S 279 12.5763 133 -0.1 74
IV.MC2.EHZ. 2021-12-03T18:22:40.90 0.3 undecidable manual S 157 7.6812 149 0.19 72
IV.SAP2.EHZ. 2021-12-03T18:22:40.17 0.3 undecidable manual P 56 24.1536 111 -0.12 72
IV.MF5.EHZ. 2021-12-03T18:22:40.49 0.1 undecidable manual P 87 24.9528 110 0.07 97
IV.FDMO.HHZ. 2021-12-03T18:22:40.45 0.3 undecidable manual S 322 8.5803 146 -0.39 71
IV.GUMA.HHZ. 2021-12-03T18:22:39.34 0.1 negative manual P 57 17.6712 121 -0.06 98
IV.MML1.EHZ. 2021-12-03T18:22:39.77 0.1 undecidable manual P 316 21.1677 115 -0.11 96
IV.CESI.HHZ. 2021-12-03T18:22:39.78 0.1 undecidable manual P 279 20.3685 116 0.01 99
IV.NRCA.HNZ. 2021-12-03T18:22:39.10 0.1 positive manual P 191 16.0728 125 -0.09 97
IV.CSP1.EHZ. 2021-12-03T18:22:38.63 0.1 undecidable manual P 18 13.5753 131 -0.26 95
IV.FDMO.HHZ. 2021-12-03T18:22:38.16 0.1 undecidable manual P 322 8.5803 146 -0.22 97
IT.MTCL.HGZ. 2021-12-03T18:22:38.67 0.1 undecidable manual P 279 12.5763 133 -0.11 98
IV.MC2.EHZ. 2021-12-03T18:22:38.34 0.1 undecidable manual P 157 7.6812 149 0.04 100
IV.FEMA.HNZ. 2021-12-03T18:22:38.39 0.1 undecidable manual P 260 8.4804 146 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.7 0.0005325 0.9 AML other m 2021-12-03T18:22:40.73
IV.FDMO.HHN. ML:2.0 0.000871 0.2 AML other m 2021-12-03T18:22:40.82
IV.MC2.EHE. ML:2.5 0.00286 1.86 AML other m 2021-12-03T18:22:40.96
IV.CSP1.EHE. ML:2.0 0.0009015 0.92 AML other m 2021-12-03T18:22:41.48
IV.CSP1.EHN. ML:2.0 0.0008185 0.62 AML other m 2021-12-03T18:22:41.67
IV.MC2.EHN. ML:2.4 0.0022350000000000004 0.68 AML other m 2021-12-03T18:22:42.06
IV.NRCA.HHE. ML:2.1 0.0009355 0.1 AML other m 2021-12-03T18:22:42.42
IV.GUMA.HNE. ML:1.9 0.000491 1.6 AML other m 2021-12-03T18:22:42.03
IV.GUMA.HHE. ML:2.0 0.000771 1.62 AML other m 2021-12-03T18:22:42.85
IV.GUMA.HNN. ML:2.0 0.000654 0.28 AML other m 2021-12-03T18:22:42.83
IV.MML1.EHN. ML:1.7 0.000282 0.22 AML other m 2021-12-03T18:22:43.53
IV.MML1.HNE. ML:1.5 0.0001895 0.5 AML other m 2021-12-03T18:22:43.28
IV.MML1.EHE. ML:1.4 0.000164 1.04 AML other m 2021-12-03T18:22:43.54
IV.NRCA.HHN. ML:2.0 0.0007505 0.16 AML other m 2021-12-03T18:22:43.80
IV.CESI.HHN. ML:1.9 0.00044899999999999996 1.62 AML other m 2021-12-03T18:22:43.10
IV.CESI.HHE. ML:1.8 0.00036449999999999997 0.22 AML other m 2021-12-03T18:22:43.82
IV.MML1.HNN. ML:1.7 0.00029549999999999997 0.86 AML other m 2021-12-03T18:22:43.52
IV.GUMA.HHN. ML:1.8 0.0004825 0.38 AML other m 2021-12-03T18:22:44.39
IV.SAP2.EHN. ML:2.5 0.001625 0.2 AML other m 2021-12-03T18:22:44.75
IV.SAP2.EHE. ML:1.8 0.000307 0.98 AML other m 2021-12-03T18:22:44.35
IV.MTRA.EHE. ML:1.6 0.000191 0.22 AML other m 2021-12-03T18:22:47.37
IV.MTRA.EHN. ML:1.7 0.000195 1.38 AML other m 2021-12-03T18:22:47.84
IV.GAVE.EHE. ML:1.9 0.0002825 1.7 AML other m 2021-12-03T18:22:49.96
IV.GAVE.EHN. ML:1.9 0.0002485 0.2 AML other m 2021-12-03T18:22:49.30
IV.ASSB.HHN. ML:1.8 0.0002055 0.14 AML other m 2021-12-03T18:22:49.69
IV.ASSB.HHE. ML:1.7 0.0001735 0.98 AML other m 2021-12-03T18:22:50.63
IV.MOMA.HHN. ML:1.7 0.0001275 0.22 AML other m 2021-12-03T18:22:53.39
IV.MOMA.HHE. ML:1.8 0.00016499999999999997 0.44 AML other m 2021-12-03T18:22:53.63
IV.SSFR.HHN. ML:2.0 0.00019250000000000002 0.24 AML other m 2021-12-03T18:22:54.34
IV.SSFR.HHE. ML:2.0 0.0001825 0.2 AML other m 2021-12-03T18:22:54.70
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