Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 21-02-2018 and time 17:30:55 (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 16:30:55 (UTC)
  • 21-02-2018 17:30:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9190, 13.1520 at 10 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 14 604 4184
Norcia PG 15 4957 9141
Monte Cavallo MC 15 145 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 19 1079 21283
Arquata del Tronto AP 20 1178 22461

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)
66 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
16:30:55		 42.9187 13.1525 10 2018-02-21
16:38:11		 Sala Sismica INGV-Roma 54067241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-02-21 16:30:55 ± 0.04
Latitude 42.9187 ± 0.0027
Longitude 13.1525 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 54067241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 286
Semi-minor axis of confidence ellipse (meter) 245
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 72
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) 33
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 35
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) 0.02788
Epicentral distance of station farthest from the epicenter (degree) 0.57287
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 26
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 62
Type of magnitude ML
Reference to an origin 54067241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-02-21 16:38:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MURB.HHZ. 2018-02-21T16:31:06.52 0.3 undecidable manual P 307 63.5919 50 -0.15 68
IV.MF5.EHZ. 2018-02-21T16:31:05.70 0.3 undecidable manual S 73 26.0517 110 0.81 60
IV.CESX.HHZ. 2018-02-21T16:31:05.71 0.3 undecidable manual P 233 57.498 50 -0.01 69
IV.PF6.EHZ. 2018-02-21T16:31:04.13 0.3 undecidable manual S 8 24.5532 111 -0.26 70
IV.FOSV.EHZ. 2018-02-21T16:31:04.72 0.3 undecidable manual P 323 52.4031 50 -0.22 68
IV.TERO.HHZ. 2018-02-21T16:31:04.31 0.3 undecidable manual P 132 49.3173 50 -0.15 69
IV.T1221.EHZ. 2018-02-21T16:31:04.99 0.1 undecidable manual S 256 25.6521 110 0.24 94
IV.ATCC.EHZ. 2018-02-21T16:31:04.75 0.3 undecidable manual P 306 51.0156 50 0.03 69
IV.MOMA.HHZ. 2018-02-21T16:31:04.55 0.3 undecidable manual P 255 49.0176 50 0.13 68
IV.RM33.EHZ. 2018-02-21T16:31:03.80 0.3 undecidable manual P 174 45.7209 50 -0.11 70
IV.SNTG.HHZ. 2018-02-21T16:31:03.05 0.3 undecidable manual P 335 41.0256 50 -0.14 71
IV.CESI.HHZ. 2018-02-21T16:31:03.85 0.1 undecidable manual S 296 22.2555 113 0.19 96
IV.EL6.EHZ. 2018-02-21T16:31:03.84 0.1 undecidable manual P 355 45.7209 50 -0.07 95
IV.ASSB.HHZ. 2018-02-21T16:31:03.21 0.3 undecidable manual P 289 42.3243 50 -0.18 70
IV.CAMP.HHZ. 2018-02-21T16:31:03.97 0.3 undecidable manual P 154 47.3193 50 -0.19 69
IV.GUMA.HHZ. 2018-02-21T16:31:03.79 0.3 undecidable manual S 43 21.7671 114 0.28 71
IV.CSP1.EHZ. 2018-02-21T16:31:02.70 0.1 undecidable manual S 12 19.6692 116 -0.14 96
IV.T1299.EHZ. 2018-02-21T16:31:02.09 0.3 undecidable manual P 161 33.2445 50 0.1 71
IV.LNSS.HHZ. 2018-02-21T16:31:02.40 0.3 undecidable manual P 195 36.2415 50 -0.05 72
IV.SMA1.EHZ. 2018-02-21T16:31:01.72 0.1 undecidable manual P 155 35.2425 50 -0.58 86
IV.MF5.EHZ. 2018-02-21T16:31:01.23 0.1 undecidable manual P 73 26.0517 110 0.41 91
IV.MMO1.EHZ. 2018-02-21T16:31:01.02 0.1 undecidable manual S 99 14.3745 124 -0.21 94
OB.GAVE.EHZ. 2018-02-21T16:31:01.92 0.1 undecidable manual P 220 32.745 50 0.01 96
IV.NRCA.HNZ. 2018-02-21T16:31:00.01 0.1 undecidable manual S 198 9.9789 134 -0.03 99
IV.GUMA.HHZ. 2018-02-21T16:31:00.27 0.3 undecidable manual P 43 21.7671 114 0.25 71
IV.PF6.EHZ. 2018-02-21T16:31:00.37 0.3 undecidable manual P 8 24.5532 111 -0.16 71
IV.CESI.HHZ. 2018-02-21T16:31:00.21 0.1 positive manual P 296 22.2555 113 0.1 97
IV.T1221.EHZ. 2018-02-21T16:31:00.88 0.1 positive manual P 256 25.6521 110 0.14 96
IV.CSP1.EHZ. 2018-02-21T16:30:59.70 0.1 undecidable manual P 12 19.6692 116 0.07 99
IV.FEMA.HNZ. 2018-02-21T16:30:59.69 0.1 undecidable manual S 300 9.5793 135 -0.27 94
IV.T1214.EHZ. 2018-02-21T16:30:59.58 0.1 undecidable manual P 165 18.2706 118 0.2 97
IV.FEMA.HNZ. 2018-02-21T16:30:58.09 0.1 positive manual P 300 9.5793 135 0.12 99
IV.NRCA.HNZ. 2018-02-21T16:30:58.19 0.1 positive manual P 198 9.9789 134 0.18 99
IV.MMO1.EHZ. 2018-02-21T16:30:58.77 0.1 negative manual P 99 14.3745 124 0.07 100
IV.MC2.EHZ. 2018-02-21T16:30:56.96 0.1 undecidable manual P 105 3.0969 162 -0.3 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FEMA.HNN. ML:2.4 0.0032047995 0.128 AML other m 2018-02-21T16:31:00.17
IV.FEMA.HNE. ML:2.5 0.003990133 0.2176 AML other m 2018-02-21T16:31:00.62
IV.NRCA.HNN. ML:2.6 0.004749319500000001 0.1408 AML other m 2018-02-21T16:31:00.90
IV.NRCA.HNE. ML:2.7 0.007113154500000001 0.192 AML other m 2018-02-21T16:31:00.53
IV.NRCA.HHE. ML:2.7 0.0072907135000000005 0.1792 AML other m 2018-02-21T16:31:00.52
IV.NRCA.HHN. ML:2.6 0.005038042499999999 0.1664 AML other m 2018-02-21T16:31:00.90
IV.T1214.HNE. ML:2.5 0.0027993465 0.256 AML other m 2018-02-21T16:31:04.05
IV.T1214.EHN. ML:2.4 0.0020520805 0.2688 AML other m 2018-02-21T16:31:03.09
IV.T1214.HNN. ML:2.4 0.0021175385 0.256 AML other m 2018-02-21T16:31:03.08
IV.T1214.EHE. ML:2.5 0.0026644685 0.256 AML other m 2018-02-21T16:31:03.92
IV.CSP1.EHE. ML:1.8 0.0005249528 0.3328 AML other m 2018-02-21T16:31:04.52
IV.CSP1.EHN. ML:1.4 0.00020152920000000003 0.1792 AML other m 2018-02-21T16:31:04.61
IV.CESI.HHE. ML:1.9 0.00055651005 0.4224 AML other m 2018-02-21T16:31:07.83
IV.CESI.HHN. ML:2.2 0.0009724382499999999 0.3328 AML other m 2018-02-21T16:31:04.69
IV.GUMA.HHE. ML:2.4 0.0016897540000000001 0.2944 AML other m 2018-02-21T16:31:06.27
IV.GUMA.HNE. ML:2.5 0.00196825 0.4736 AML other m 2018-02-21T16:31:08.25
IV.GUMA.HHN. ML:2.5 0.0020568165 0.384 AML other m 2018-02-21T16:31:04.34
IV.GUMA.HNN. ML:2.5 0.0019586255 0.2944 AML other m 2018-02-21T16:31:04.48
IV.PF6.EHN. ML:1.6 0.00022325359999999999 0.2432 AML other m 2018-02-21T16:31:05.25
IV.PF6.EHE. ML:2.0 0.00055135875 0.3328 AML other m 2018-02-21T16:31:04.47
IV.T1221.EHE. ML:1.9 0.0004624336 0.2048 AML other m 2018-02-21T16:31:05.66
IV.T1221.HNE. ML:1.9 0.00048130245000000007 0.2048 AML other m 2018-02-21T16:31:05.66
IV.T1221.HNN. ML:1.8 0.0003663963 0.2816 AML other m 2018-02-21T16:31:05.38
IV.T1221.EHN. ML:1.8 0.00035333079699999997 0.2816 AML other m 2018-02-21T16:31:05.38
IV.MF5.EHE. ML:2.2 0.0008800621 0.5632 AML other m 2018-02-21T16:31:10.32
IV.MF5.EHN. ML:2.1 0.00078964465 0.384 AML other m 2018-02-21T16:31:08.01
OB.GAVE.EHN. ML:2.2 0.0007353844000000001 0.2176 AML other m 2018-02-21T16:31:09.18
OB.GAVE.HNE. ML:2.4 0.0010305841500000002 0.1792 AML other m 2018-02-21T16:31:09.29
OB.GAVE.EHE. ML:2.4 0.001098972 0.1792 AML other m 2018-02-21T16:31:09.20
OB.GAVE.HNN. ML:1.9 0.00031386474999999995 0.2176 AML other m 2018-02-21T16:31:09.18
IV.LNSS.HHN. ML:2.2 0.0007360378000000001 0.1152 AML other m 2018-02-21T16:31:07.39
IV.LNSS.HHE. ML:2.3 0.0007538525999999999 0.1664 AML other m 2018-02-21T16:31:07.53
IV.SNTG.HHE. ML:1.5 0.00011568492 0.32 AML other m 2018-02-21T16:31:11.06
IV.SNTG.HNE. ML:1.6 0.000128443775 0.1664 AML other m 2018-02-21T16:31:09.00
IV.SNTG.HHN. ML:1.6 0.00014296800000000002 0.2304 AML other m 2018-02-21T16:31:11.22
IV.SNTG.HNN. ML:1.8 0.00021270249999999998 0.5632 AML other m 2018-02-21T16:31:12.46
IV.ASSB.HHE. ML:2.1 0.0003848241 0.2048 AML other m 2018-02-21T16:31:11.13
IV.ASSB.HHN. ML:2.0 0.0003531809 0.2304 AML other m 2018-02-21T16:31:11.08
IV.RM33.HNN. ML:2.0 0.00032128319999999997 0.3456 AML other m 2018-02-21T16:31:11.78
IV.RM33.HNE. ML:2.0 0.00025804485 0.2432 AML other m 2018-02-21T16:31:13.56
IV.RM33.EHN. ML:2.0 0.00031620155 0.2304 AML other m 2018-02-21T16:31:11.89
IV.RM33.EHE. ML:1.9 0.00021026611000000002 0.2432 AML other m 2018-02-21T16:31:13.57
IV.EL6.EHE. ML:2.0 0.00026480355 0.2432 AML other m 2018-02-21T16:31:14.14
IV.EL6.EHN. ML:2.1 0.0003738637 0.192 AML other m 2018-02-21T16:31:11.75
IV.CAMP.HHE. ML:1.8 0.0001794372 0.2432 AML other m 2018-02-21T16:31:11.55
IV.CAMP.HHN. ML:1.7 0.00014185575000000001 0.2176 AML other m 2018-02-21T16:31:11.48
IV.TERO.HHN. ML:1.8 0.00018772965 0.4096 AML other m 2018-02-21T16:31:13.84
IV.TERO.HHE. ML:1.8 0.00016380924 0.1408 AML other m 2018-02-21T16:31:12.06
IV.TERO.HNN. ML:1.6 0.00010733965 0.9856 AML other m 2018-02-21T16:31:05.18
IV.TERO.HNE. ML:1.8 0.00017172949999999998 0.9216 AML other m 2018-02-21T16:31:25.24
IV.MOMA.HNE. ML:2.1 0.00033539735 0.2176 AML other m 2018-02-21T16:31:13.28
IV.MOMA.HHE. ML:2.1 0.00034313485 0.2176 AML other m 2018-02-21T16:31:13.18
IV.MOMA.HHN. ML:2.1 0.0003106601 0.2688 AML other m 2018-02-21T16:31:14.10
IV.MOMA.HNN. ML:2.1 0.0003365041 0.2688 AML other m 2018-02-21T16:31:14.10
IV.FOSV.EHE. ML:1.8 0.0001478158 0.1664 AML other m 2018-02-21T16:31:13.43
IV.FOSV.EHN. ML:2.0 0.00021756009999999998 0.2944 AML other m 2018-02-21T16:31:13.64
IV.ATCC.EHN. ML:2.0 0.00023493609999999997 0.3456 AML other m 2018-02-21T16:31:17.53
IV.ATCC.EHE. ML:1.9 0.0001939326 0.192 AML other m 2018-02-21T16:31:16.33
IV.MURB.HNE. ML:2.2 0.0002887486 0.3328 AML other m 2018-02-21T16:31:23.19
IV.MURB.HHE. ML:2.2 0.00030072905 0.2432 AML other m 2018-02-21T16:31:20.78
IV.MURB.HHN. ML:2.0 0.0002118589 0.3456 AML other m 2018-02-21T16:31:21.71
IV.MURB.HNN. ML:2.1 0.0002674735 0.6016 AML other m 2018-02-21T16:31:22.04
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