Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 21-02-2018 and time 17:16:48 (Italy) in region 3 km N Castelsantangelo sul Nera (MC)

A magnitude ML 2.1 earthquake occured in region: 3 km N Castelsantangelo sul Nera (MC), on

  • 21-02-2018 16:16:48 (UTC)
  • 21-02-2018 17:16:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9190, 13.1500 at 9 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Castelsantangelo sul Nera MC 3 281 281
Ussita MC 3 444 725
Visso MC 5 1107 1832
Preci PG 10 724 2556
Bolognola MC 11 142 2698
Acquacanina MC 13 121 2819
Fiastra MC 13 559 3378
Fiordimonte MC 14 202 3580
Montemonaco AP 15 604 4184
Monte Cavallo MC 15 145 4329
Norcia PG 15 4957 9286
Montefortino FM 16 1178 10464
Pieve Torina MC 16 1458 11922
Pievebovigliana MC 17 866 12788
Montegallo AP 17 523 13311
Sarnano MC 18 3264 16575
Amandola FM 18 3629 20204
Sellano PG 18 1079 21283

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
54 Km NW of Teramo (54892 inhabitants)
57 Km NE of Terni (111501 inhabitants)
65 Km E of Perugia (166134 inhabitants)
66 Km NW of L'Aquila (69753 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
93 Km W 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
Reviewed
Rev100 		ML 2.1 2018-02-21
16:16:48		 42.9187 13.1502 9 2018-02-21
16:25:12		 Sala Sismica INGV-Roma 54066901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-02-21 16:16:48 ± 0.04
Latitude 42.9187 ± 0.0018
Longitude 13.1502 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 54066901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 230
Semi-minor axis of confidence ellipse (meter) 217
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 67
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) 34
Number of associated phases, regardless of their use for origin computation 48
Number of defining phases 46
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.71316
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 28
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 74
Type of magnitude ML
Reference to an origin 54066901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-02-21 16:25:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IMOL.HNZ. 2018-02-21T16:17:44.40 3.0 undecidable manual Sg 2.05 0
IV.TRIF.HHZ. 2018-02-21T16:17:20.24 3.0 undecidable manual Pg 3.1 0
IV.ATVO.HHZ. 2018-02-21T16:17:13.46 0.3 undecidable manual S 311 79.1652 50 1.16 45
IV.EL6.EHZ. 2018-02-21T16:17:03.50 0.3 undecidable manual S 355 45.7209 50 0.12 69
IV.RM33.EHZ. 2018-02-21T16:17:03.32 0.3 undecidable manual S 173 45.7209 50 -0.07 70
IV.ASSB.HHZ. 2018-02-21T16:17:02.47 0.3 undecidable manual S 289 42.2244 50 0.03 71
IV.ATVO.HHZ. 2018-02-21T16:17:02.13 0.3 undecidable manual P 311 79.1652 50 -0.02 66
IV.SNTG.HHZ. 2018-02-21T16:17:02.27 0.3 undecidable manual S 336 41.0256 50 0.15 69
IV.FRON.EHZ. 2018-02-21T16:17:01.40 0.3 undecidable manual P 333 74.7696 50 -0.08 66
OB.GAVE.EHZ. 2018-02-21T16:17:00.07 0.1 undecidable manual S 220 32.6451 50 0.19 93
IV.LNSS.HHZ. 2018-02-21T16:17:00.97 0.1 undecidable manual S 194 36.1416 50 0.14 93
IV.T1299.EHZ. 2018-02-21T16:17:00.39 0.1 undecidable manual S 161 33.3444 50 0.32 90
IV.FIAM.HHZ. 2018-02-21T16:17:00.71 0.3 undecidable manual P 182 72.2721 50 -0.37 62
IV.MURB.HHZ. 2018-02-21T16:16:59.85 0.3 undecidable manual P 307 63.492 50 0.12 67
IV.GIGS.HHZ. 2018-02-21T16:16:59.16 0.3 undecidable manual P 146 62.0934 50 -0.36 64
IV.CESX.HHZ. 2018-02-21T16:16:58.63 0.3 undecidable manual P 233 57.3981 50 -0.16 67
IV.MF5.EHZ. 2018-02-21T16:16:58.75 0.1 undecidable manual S 73 26.2515 109 0.81 78
IV.TERO.HHZ. 2018-02-21T16:16:57.17 0.3 undecidable manual P 131 49.4172 50 -0.4 65
IV.ATCC.EHZ. 2018-02-21T16:16:57.74 0.1 undecidable manual P 306 50.8158 50 -0.05 93
IV.PF6.EHZ. 2018-02-21T16:16:57.15 0.1 undecidable manual S 8 24.5532 110 -0.24 93
IV.MOMA.HHZ. 2018-02-21T16:16:57.49 0.3 undecidable manual P 255 48.8178 50 0 70
IV.T1221.EHZ. 2018-02-21T16:16:57.83 0.1 undecidable manual S 255 25.4523 110 0.16 95
IV.SNTG.HHZ. 2018-02-21T16:16:56.05 0.1 undecidable manual P 336 41.0256 50 -0.22 91
IV.CESI.HHZ. 2018-02-21T16:16:56.73 0.1 undecidable manual S 296 22.0668 112 0.14 96
IV.ASSB.HHZ. 2018-02-21T16:16:56.22 0.1 undecidable manual P 289 42.2244 50 -0.24 91
IV.GUMA.HHZ. 2018-02-21T16:16:56.83 0.1 undecidable manual S 43 21.9669 113 0.3 93
IV.EL6.EHZ. 2018-02-21T16:16:56.84 0.1 undecidable manual P 355 45.7209 50 -0.16 91
IV.RM33.EHZ. 2018-02-21T16:16:56.81 0.1 undecidable manual P 173 45.7209 50 -0.19 91
IV.T1299.EHZ. 2018-02-21T16:16:55.05 0.1 undecidable manual P 161 33.3444 50 -0.04 96
IV.SMA1.EHZ. 2018-02-21T16:16:55.20 0.1 undecidable manual P 155 35.3424 50 -0.2 92
IV.T1214.EHZ. 2018-02-21T16:16:55.73 0.1 undecidable manual S 165 18.2706 117 0.35 92
IV.LNSS.HHZ. 2018-02-21T16:16:55.42 0.1 undecidable manual P 194 36.1416 50 -0.1 94
IV.CSP1.EHZ. 2018-02-21T16:16:55.76 0.1 undecidable manual S 13 19.7691 115 -0.06 98
IV.MF5.EHZ. 2018-02-21T16:16:54.15 0.1 undecidable manual P 73 26.2515 109 0.29 92
OB.GAVE.EHZ. 2018-02-21T16:16:54.96 0.1 undecidable manual P 220 32.6451 50 -0.02 96
IV.PF6.EHZ. 2018-02-21T16:16:53.29 0.1 undecidable manual P 8 24.5532 110 -0.25 93
IV.T1221.EHZ. 2018-02-21T16:16:53.77 0.1 positive manual P 255 25.4523 110 0.06 97
IV.MMO1.EHZ. 2018-02-21T16:16:53.92 0.1 undecidable manual S 98 14.4744 122 -0.31 93
IV.CESI.HHZ. 2018-02-21T16:16:53.07 0.1 positive manual P 296 22.0668 112 -0.01 98
IV.GUMA.HHZ. 2018-02-21T16:16:53.20 0.1 undecidable manual P 43 21.9669 113 0.16 95
IV.T1214.EHZ. 2018-02-21T16:16:52.46 0.1 undecidable manual P 165 18.2706 117 0.08 97
IV.NRCA.HNZ. 2018-02-21T16:16:52.99 0.1 undecidable manual S 197 9.879 133 0.04 100
IV.CSP1.EHZ. 2018-02-21T16:16:52.47 0.3 undecidable manual P 13 19.7691 115 -0.17 72
IV.FEMA.HNZ. 2018-02-21T16:16:52.70 0.1 undecidable manual S 301 9.4794 134 -0.15 98
IV.NRCA.HNZ. 2018-02-21T16:16:51.07 0.1 undecidable manual P 197 9.879 133 0.09 99
IV.MMO1.EHZ. 2018-02-21T16:16:51.67 0.1 negative manual P 98 14.4744 122 -0.05 99
IV.FEMA.HNZ. 2018-02-21T16:16:50.95 0.1 positive manual P 301 9.4794 134 0.03 100
IV.MC2.EHZ. 2018-02-21T16:16:49.84 0.1 undecidable manual P 104 3.2967 160 -0.39 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FEMA.HNN. ML:2.4 0.0039830280000000004 0.1152 AML other m 2018-02-21T16:16:53.02
IV.FEMA.HNE. ML:2.6 0.005640843 0.1536 AML other m 2018-02-21T16:16:53.04
IV.NRCA.HHN. ML:2.6 0.005527211 0.1664 AML other m 2018-02-21T16:16:53.80
IV.NRCA.HNN. ML:2.6 0.005258847 0.1536 AML other m 2018-02-21T16:16:53.80
IV.NRCA.HHE. ML:2.8 0.009025417499999999 0.1536 AML other m 2018-02-21T16:16:53.41
IV.NRCA.HNE. ML:2.8 0.008695282 0.1664 AML other m 2018-02-21T16:16:53.41
IV.T1214.EHE. ML:2.3 0.0017611150000000002 0.2432 AML other m 2018-02-21T16:16:56.95
IV.T1214.HNE. ML:2.3 0.001769852 0.2432 AML other m 2018-02-21T16:16:56.95
IV.T1214.EHN. ML:2.1 0.00113687365 0.2688 AML other m 2018-02-21T16:16:57.53
IV.T1214.HNN. ML:2.2 0.0011530726 0.2688 AML other m 2018-02-21T16:16:57.53
IV.CSP1.EHN. ML:1.5 0.00026737719999999997 0.2944 AML other m 2018-02-21T16:16:56.34
IV.CSP1.EHE. ML:2.0 0.00071255455 0.2816 AML other m 2018-02-21T16:16:56.79
IV.CESI.HHE. ML:2.1 0.0008392685500000001 0.32 AML other m 2018-02-21T16:16:58.62
IV.CESI.HHN. ML:2.3 0.001402942 0.448 AML other m 2018-02-21T16:16:58.34
IV.GUMA.HHN. ML:2.6 0.0027233785 0.4096 AML other m 2018-02-21T16:16:57.18
IV.GUMA.HNE. ML:2.5 0.002263489 0.4608 AML other m 2018-02-21T16:17:01.09
IV.GUMA.HNN. ML:2.6 0.002928417 0.5504 AML other m 2018-02-21T16:16:58.08
IV.GUMA.HHE. ML:2.5 0.0023557755000000002 0.2688 AML other m 2018-02-21T16:16:59.13
IV.PF6.EHE. ML:1.9 0.0004969250000000001 0.256 AML other m 2018-02-21T16:16:57.32
IV.PF6.EHN. ML:1.7 0.0002884484 0.0768 AML other m 2018-02-21T16:16:57.30
IV.T1221.HNE. ML:2.0 0.00068282745 0.2176 AML other m 2018-02-21T16:16:58.54
IV.T1221.EHE. ML:2.0 0.0006775292499999999 0.2176 AML other m 2018-02-21T16:16:58.54
IV.T1221.EHN. ML:2.0 0.0005646156499999999 0.2048 AML other m 2018-02-21T16:16:58.36
IV.T1221.HNN. ML:2.0 0.00059414675 0.2048 AML other m 2018-02-21T16:16:58.25
IV.MF5.EHN. ML:2.3 0.0010610140500000001 0.576 AML other m 2018-02-21T16:17:02.64
IV.MF5.EHE. ML:2.3 0.00105995335 0.4992 AML other m 2018-02-21T16:17:02.90
OB.GAVE.EHN. ML:2.3 0.000908144 0.2176 AML other m 2018-02-21T16:17:03.38
OB.GAVE.HNE. ML:2.4 0.0012528375 0.192 AML other m 2018-02-21T16:17:02.16
OB.GAVE.HNN. ML:1.9 0.00036049525000000004 0.2688 AML other m 2018-02-21T16:17:03.35
OB.GAVE.EHE. ML:2.5 0.001337288 0.1792 AML other m 2018-02-21T16:17:02.17
IV.T1299.EHN. ML:1.9 0.00034925099999999997 0.256 AML other m 2018-02-21T16:17:02.71
IV.T1299.EHE. ML:1.9 0.0003632113 0.256 AML other m 2018-02-21T16:17:02.23
IV.T1299.HNE. ML:1.9 0.0003392141 0.2688 AML other m 2018-02-21T16:17:02.23
IV.T1299.HNN. ML:2.2 0.0007067692999999999 1.088 AML other m 2018-02-21T16:16:55.22
IV.SMA1.EHE. ML:2.3 0.00077444565 0.4608 AML other m 2018-02-21T16:17:08.35
IV.SMA1.EHN. ML:2.1 0.0005188802500000001 0.6016 AML other m 2018-02-21T16:17:08.54
IV.LNSS.HHN. ML:2.2 0.0006933506 0.1408 AML other m 2018-02-21T16:17:02.19
IV.LNSS.HHE. ML:2.2 0.00056537605 0.4096 AML other m 2018-02-21T16:17:04.50
IV.SNTG.HHN. ML:1.9 0.00024343015000000002 0.1664 AML other m 2018-02-21T16:17:04.72
IV.SNTG.HHE. ML:1.7 0.0001708946 0.1152 AML other m 2018-02-21T16:17:03.58
IV.SNTG.HNE. ML:1.7 0.00018293289 0.384 AML other m 2018-02-21T16:17:02.85
IV.SNTG.HNN. ML:1.8 0.00023829485 0.1664 AML other m 2018-02-21T16:17:04.73
IV.ASSB.HHN. ML:2.2 0.00051634845 0.2176 AML other m 2018-02-21T16:17:04.05
IV.ASSB.HHE. ML:2.2 0.00056951145 0.2816 AML other m 2018-02-21T16:17:03.99
IV.RM33.EHN. ML:2.2 0.00042935325 0.3712 AML other m 2018-02-21T16:17:04.67
IV.RM33.HNN. ML:2.2 0.0004511151 0.2304 AML other m 2018-02-21T16:17:04.67
IV.RM33.EHE. ML:2.0 0.0002817853 0.2432 AML other m 2018-02-21T16:17:06.57
IV.RM33.HNE. ML:2.0 0.00029318655 0.256 AML other m 2018-02-21T16:17:04.94
IV.EL6.EHE. ML:2.2 0.00042624629999999996 0.1792 AML other m 2018-02-21T16:17:04.12
IV.EL6.EHN. ML:2.2 0.0005212242999999999 0.1792 AML other m 2018-02-21T16:17:04.70
IV.TERO.HHN. ML:1.9 0.00021644655000000002 0.2176 AML other m 2018-02-21T16:17:08.52
IV.TERO.HNE. ML:1.7 0.000133350605 0.832 AML other m 2018-02-21T16:17:16.15
IV.TERO.HNN. ML:1.6 0.000109040125 0.7424 AML other m 2018-02-21T16:17:01.24
IV.TERO.HHE. ML:1.8 0.00017246337499999997 0.2816 AML other m 2018-02-21T16:17:04.95
IV.MOMA.HNE. ML:2.3 0.00056528575 0.2304 AML other m 2018-02-21T16:17:06.16
IV.MOMA.HNN. ML:2.3 0.0005173589 0.896 AML other m 2018-02-21T16:17:16.41
IV.MOMA.HHN. ML:2.2 0.00046541195 0.256 AML other m 2018-02-21T16:17:06.84
IV.MOMA.HHE. ML:2.3 0.0005545317999999999 0.2176 AML other m 2018-02-21T16:17:06.04
IV.ATCC.EHN. ML:2.1 0.00031705895 0.3456 AML other m 2018-02-21T16:17:10.37
IV.ATCC.EHE. ML:2.1 0.00030460569999999997 0.2432 AML other m 2018-02-21T16:17:08.36
IV.CESX.HHN. ML:1.9 0.0001891621 0.3712 AML other m 2018-02-21T16:17:08.63
IV.CESX.HHE. ML:2.0 0.00021190885 0.2816 AML other m 2018-02-21T16:17:09.54
IV.GIGS.HHN. ML:1.5 0.000060339 1.0624 AML other m 2018-02-21T16:17:23.29
IV.GIGS.HHE. ML:1.6 0.00007297081 1.472 AML other m 2018-02-21T16:17:22.07
IV.MURB.HHN. ML:2.2 0.0002908676 0.1536 AML other m 2018-02-21T16:17:10.96
IV.MURB.HNE. ML:2.3 0.00042014065 0.256 AML other m 2018-02-21T16:17:13.88
IV.MURB.HHE. ML:2.4 0.00044808355 0.2432 AML other m 2018-02-21T16:17:13.64
IV.MURB.HNN. ML:2.2 0.0002709606 0.256 AML other m 2018-02-21T16:17:18.49
IV.FIAM.HHE. ML:1.9 0.0001424325 0.7808 AML other m 2018-02-21T16:17:15.21
IV.FIAM.HHN. ML:1.8 0.00009831554000000001 0.2432 AML other m 2018-02-21T16:17:13.98
IV.FRON.EHE. ML:1.7 0.000076896665 0.2176 AML other m 2018-02-21T16:17:16.06
IV.FRON.EHN. ML:1.9 0.000128034135 0.2432 AML other m 2018-02-21T16:17:14.34
IV.ATVO.HHN. ML:1.8 0.000102498255 2.0224 AML other m 2018-02-21T16:17:04.08
IV.ATVO.HHE. ML:1.8 0.000092743355 2.2016 AML other m 2018-02-21T16:17:35.74
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
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