Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 21-02-2017 and time 21:11:00 (Italy) in region 7 km E Castelsantangelo sul Nera (MC)

A magnitude ML 1.8 earthquake occured in region: 7 km E Castelsantangelo sul Nera (MC), on

  • 21-02-2017 20:11:00 (UTC)
  • 21-02-2017 21:11:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8750, 13.2350 at 20 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 7 281 281
Montemonaco AP 8 604 885
Montegallo AP 9 523 1408
Ussita MC 11 444 1852
Montefortino FM 12 1178 3030
Arquata del Tronto AP 12 1178 4208
Bolognola MC 13 142 4350
Visso MC 14 1107 5457
Norcia PG 15 4957 10414
Amandola FM 15 3629 14043
Preci PG 16 724 14767
Comunanza AP 17 3166 17933
Acquacanina MC 18 121 18054
Acquasanta Terme AP 18 2916 20970
Palmiano AP 19 196 21166
Sarnano MC 19 3264 24430
Fiastra MC 19 559 24989
Roccafluvione AP 20 2010 26999
Accumoli RI 20 667 27666

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Foligno (57155 inhabitants)
45 Km NW of Teramo (54892 inhabitants)
59 Km NE of Terni (111501 inhabitants)
60 Km N of L'Aquila (69753 inhabitants)
74 Km E of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
86 Km S of Ancona (100861 inhabitants)
92 Km NW of Pescara (121014 inhabitants)
96 Km NW of Chieti (51815 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 1.8 2017-02-21
20:11:00		 42.8752 13.2353 20 2017-02-21
20:19:24		 Sala Sismica INGV-Roma 41443321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-02-21 20:11:00 ± 0.08
Latitude 42.8752 ± 0.0027
Longitude 13.2353 ± 0.0037
Depth (km) 20 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 41443321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 369
Semi-minor axis of confidence ellipse (meter) 79
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 236
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.36962
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 19
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 41443321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-02-21 20:19:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.APEC.HHZ. 2017-02-21T20:11:18.86 3.0 positive manual P 2.36 0
IV.T1211.EHZ. 2017-02-21T20:11:14.58 3.0 undecidable manual S -2.03 0
IV.RM33.EHZ. 2017-02-21T20:11:14.05 0.3 undecidable manual S 182 40.626 107 0.31 68
IV.T0110.HHZ. 2017-02-21T20:11:14.53 3.0 negative manual P 0.01 0
IV.CAMP.HHZ. 2017-02-21T20:11:13.80 0.3 undecidable manual S 159 40.2264 107 0.17 70
IV.VCEL.EHZ. 2017-02-21T20:11:13.11 3.0 undecidable manual P 0.02 0
IV.TERO.HHZ. 2017-02-21T20:11:13.84 0.3 undecidable manual S 133 41.0256 107 0 71
IV.ARVD.HHZ. 2017-02-21T20:11:12.90 3.0 negative manual P -0.2 0
IV.CESI.HHZ. 2017-02-21T20:11:11.43 0.3 undecidable manual S 298 30.4473 114 0.24 70
IV.T1215.EHZ. 2017-02-21T20:11:11.35 0.3 undecidable manual S 255 30.9468 114 0.05 72
IV.T1299.EHZ. 2017-02-21T20:11:10.75 0.3 undecidable manual S 172 26.9508 118 0.39 68
IV.T1219.EHZ. 2017-02-21T20:11:10.32 0.3 undecidable manual S 317 27.4503 117 -0.14 72
IV.CING.HHZ. 2017-02-21T20:11:10.23 3.0 negative manual P -0.08 0
IV.FOSV.EHZ. 2017-02-21T20:11:10.82 3.0 positive manual P -0.19 0
IV.ATCC.EHZ. 2017-02-21T20:11:10.81 3.0 negative manual P 0 0
IV.CSP1.EHZ. 2017-02-21T20:11:09.90 0.1 undecidable manual S 354 24.1536 121 0.2 95
IV.EL6.EHZ. 2017-02-21T20:11:09.69 3.0 negative manual P 0.04 0
IV.GUMA.HHZ. 2017-02-21T20:11:09.79 0.3 undecidable manual S 21 22.3554 124 0.5 68
IV.SNTG.HHZ. 2017-02-21T20:11:09.05 3.0 negative manual P -0.08 0
IV.GIGS.HHZ. 2017-02-21T20:11:09.72 3.0 negative manual P -0.37 0
IV.T1216.EHZ. 2017-02-21T20:11:08.19 0.3 undecidable manual S 276 17.6712 132 -0.11 74
IV.OFFI.HHZ. 2017-02-21T20:11:08.34 3.0 positive manual P 0.79 0
IV.FEMA.HNZ. 2017-02-21T20:11:08.41 0.3 undecidable manual S 303 17.871 131 0.06 74
IV.CAMP.HHZ. 2017-02-21T20:11:07.63 0.3 undecidable manual P 159 40.2264 107 -0.26 68
IV.TERO.HHZ. 2017-02-21T20:11:07.78 0.3 undecidable manual P 133 41.0256 107 -0.24 68
IV.T1214.EHZ. 2017-02-21T20:11:07.59 0.3 undecidable manual S 190 12.9759 142 0.15 74
IV.RM33.EHZ. 2017-02-21T20:11:07.84 0.3 undecidable manual P 182 40.626 107 -0.12 70
IV.MMO1.HNZ. 2017-02-21T20:11:06.55 0.1 undecidable manual S 70 7.881 155 -0.18 97
IV.NRCA.HNZ. 2017-02-21T20:11:06.93 0.1 undecidable manual S 245 10.878 147 -0.18 98
IV.T1215.EHZ. 2017-02-21T20:11:06.46 0.3 undecidable manual P 255 30.9468 114 -0.09 72
IV.T1299.EHZ. 2017-02-21T20:11:06.11 0.1 undecidable manual P 172 26.9508 118 0.1 97
IV.LNSS.HHZ. 2017-02-21T20:11:06.89 0.6 undecidable manual P 208 34.1436 111 -0.12 47
IV.CESI.HHZ. 2017-02-21T20:11:06.48 0.1 undecidable manual P 298 30.4473 114 -0.01 98
IV.SMA1.EHZ. 2017-02-21T20:11:06.18 0.3 undecidable manual P 163 28.3494 116 -0.01 73
IV.T1220.EHZ. 2017-02-21T20:11:06.10 0.3 undecidable manual P 336 28.6491 116 -0.14 72
IV.T1217.EHZ. 2017-02-21T20:11:06.59 0.3 undecidable manual P 234 30.6471 114 0.08 72
IV.CSP1.EHZ. 2017-02-21T20:11:05.52 0.3 undecidable manual P 354 24.1536 121 -0.11 72
IV.T1219.EHZ. 2017-02-21T20:11:05.88 0.1 undecidable manual P 317 27.4503 117 -0.19 95
IV.GUMA.HHZ. 2017-02-21T20:11:05.59 0.1 undecidable manual P 21 22.3554 124 0.2 96
IV.T1218.EHZ. 2017-02-21T20:11:05.72 0.3 undecidable manual P 203 24.753 120 0.01 74
IV.T1216.EHZ. 2017-02-21T20:11:04.68 0.3 undecidable manual P 276 17.6712 132 -0.14 73
IV.FEMA.HNZ. 2017-02-21T20:11:04.85 0.3 undecidable manual P 303 17.871 131 0 75
IV.NRCA.HNZ. 2017-02-21T20:11:04.07 0.1 undecidable manual P 245 10.878 147 -0.06 100
IV.T1214.EHZ. 2017-02-21T20:11:04.39 0.1 undecidable manual P 190 12.9759 142 0.06 100
IV.MMO1.HNZ. 2017-02-21T20:11:03.80 0.1 undecidable manual P 70 7.881 155 -0.12 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAMP.HHE. ML:1.2 0.000051250000000000006 0.78 AML other m 2017-02-21T20:11:13.97
IV.CAMP.HHN. ML:1.3 0.00006705 0.54 AML other m 2017-02-21T20:11:14.10
IV.CESI.HHE. ML:1.7 0.0001985 0.32 AML other m 2017-02-21T20:11:11.72
IV.CESI.HHN. ML:1.9 0.00032700000000000003 0.4 AML other m 2017-02-21T20:11:11.72
IV.CSP1.EHN. ML:1.7 0.0002545 0.22 AML other m 2017-02-21T20:11:10.62
IV.CSP1.EHE. ML:1.5 0.00015015000000000002 0.32 AML other m 2017-02-21T20:11:12.63
IV.GUMA.HNE. ML:1.9 0.00042699999999999997 1 AML other m 2017-02-21T20:11:10.09
IV.GUMA.HHN. ML:2.0 0.0005035 0.48 AML other m 2017-02-21T20:11:12.55
IV.GUMA.HNN. ML:2.0 0.0005335 1.68 AML other m 2017-02-21T20:11:10.09
IV.GUMA.HHE. ML:2.1 0.000639 1.74 AML other m 2017-02-21T20:11:09.94
IV.LNSS.HHE. ML:1.8 0.000256 0.32 AML other m 2017-02-21T20:11:13.20
IV.LNSS.HHN. ML:2.0 0.00035250000000000006 0.12 AML other m 2017-02-21T20:11:13.33
IV.NRCA.HHN. ML:1.9 0.0006425000000000001 0.84 AML other m 2017-02-21T20:11:07.65
IV.NRCA.HHE. ML:2.2 0.001125 0.14 AML other m 2017-02-21T20:11:07.82
IV.OFFI.HHE. ML:1.5 0.00011245 1.74 AML other m 2017-02-21T20:11:15.88
IV.OFFI.HHN. ML:1.6 0.000135 1.36 AML other m 2017-02-21T20:11:16.01
IV.RM33.EHN. ML:1.7 0.00016350000000000002 0.44 AML other m 2017-02-21T20:11:14.26
IV.RM33.EHE. ML:1.8 0.00020800000000000001 0.32 AML other m 2017-02-21T20:11:15.81
IV.SMA1.EHN. ML:1.9 0.0003305 0.3 AML other m 2017-02-21T20:11:10.99
IV.SMA1.EHE. ML:1.6 0.0001725 1.1 AML other m 2017-02-21T20:11:11.61
IV.T1211.EHE. ML:1.5 0.00008054999999999999 0.4 AML other m 2017-02-21T20:11:16.59
IV.T1211.EHN. ML:1.5 0.00007935 0.96 AML other m 2017-02-21T20:11:19.40
IV.T1214.HNE. ML:1.9 0.000498 0.72 AML other m 2017-02-21T20:11:07.44
IV.T1214.EHE. ML:1.8 0.00045699999999999994 0.86 AML other m 2017-02-21T20:11:07.87
IV.T1214.HNN. ML:1.9 0.0005629999999999999 0.34 AML other m 2017-02-21T20:11:07.68
IV.T1214.EHN. ML:1.9 0.0005529999999999999 0.34 AML other m 2017-02-21T20:11:07.85
IV.T1216.EHN. ML:1.8 0.000402 0.2 AML other m 2017-02-21T20:11:08.43
IV.T1216.EHE. ML:1.8 0.000366 0.2 AML other m 2017-02-21T20:11:08.59
IV.T1218.EHE. ML:1.7 0.000265 0.98 AML other m 2017-02-21T20:11:10.11
IV.T1218.HNE. ML:1.8 0.000284 0.74 AML other m 2017-02-21T20:11:10.72
IV.T1218.HNN. ML:1.8 0.00029299999999999997 1.4 AML other m 2017-02-21T20:11:10.10
IV.T1218.EHN. ML:1.8 0.00026900000000000003 0.12 AML other m 2017-02-21T20:11:10.81
IV.T1219.EHE. ML:1.7 0.00022999999999999998 0.4 AML other m 2017-02-21T20:11:10.51
IV.T1219.EHN. ML:1.7 0.0002295 0.4 AML other m 2017-02-21T20:11:10.55
IV.T1219.HNN. ML:1.7 0.0002245 0.16 AML other m 2017-02-21T20:11:10.55
IV.T1219.HNE. ML:1.8 0.0002665 0.4 AML other m 2017-02-21T20:11:10.71
IV.T1299.EHE. ML:1.4 0.000108 0.36 AML other m 2017-02-21T20:11:10.80
IV.T1299.EHN. ML:1.5 0.0001555 1.34 AML other m 2017-02-21T20:11:10.80
IV.TERO.HHN. ML:1.7 0.0001575 1.34 AML other m 2017-02-21T20:11:14.16
IV.TERO.HHE. ML:1.7 0.000158 0.86 AML other m 2017-02-21T20:11:15.06
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