Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 21-03-2017 and time 17:24:47 (Italy) in region 3 km NW Accumoli (RI)

A magnitude ML 1.8 earthquake occured in region: 3 km NW Accumoli (RI), on

  • 21-03-2017 16:24:47 (UTC)
  • 21-03-2017 17:24:47 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7230, 13.2330 at 13 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
Accumoli RI 3 667 667
Arquata del Tronto AP 8 1178 1845
Amatrice RI 11 2657 4502
Cittareale RI 13 482 4984
Norcia PG 14 4957 9941
Acquasanta Terme AP 15 2916 12857
Montegallo AP 16 523 13380
Cascia PG 18 3217 16597

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
44 Km NW of L'Aquila (69753 inhabitants)
50 Km SE of Foligno (57155 inhabitants)
51 Km E of Terni (111501 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
81 Km SE of Perugia (166134 inhabitants)
85 Km W of Pescara (121014 inhabitants)
87 Km W of Chieti (51815 inhabitants)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
92 Km NE of Tivoli (56533 inhabitants)
98 Km E of Viterbo (67173 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 2017-03-21
16:24:47		 42.7233 13.2332 13 2017-03-21
16:31:12		 Sala Sismica INGV-Roma 42746381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-03-21 16:24:47 ± 0.07
Latitude 42.7233 ± 0.0018
Longitude 13.2332 ± 0.0049
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 42746381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 360
Semi-minor axis of confidence ellipse (meter) 73
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 89
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 94
Number of associated phases, regardless of their use for origin computation 49
Number of defining phases 38
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.40110
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 19
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 42746381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-03-21 16:31:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PARC.HHZ. 2017-03-21T16:25:07.23 3.0 undecidable manual P -0.57 0
IV.T1220.EHZ. 2017-03-21T16:25:01.63 0.3 undecidable manual S 345 44.5221 94 0.13 69
IV.T1222.EHZ. 2017-03-21T16:25:00.16 0.3 undecidable manual S 204 39.1275 95 0.08 71
IV.GUMA.HHZ. 2017-03-21T16:25:00.64 0.3 undecidable manual S 12 38.5281 95 0.72 59
IV.CESI.HHZ. 2017-03-21T16:25:00.78 0.3 undecidable manual S 320 41.1255 94 0.18 69
IV.T1219.EHZ. 2017-03-21T16:25:00.60 0.3 undecidable manual S 333 41.3253 94 -0.05 70
IV.T1211.EHZ. 2017-03-21T16:24:59.98 0.3 undecidable manual S 236 37.4292 95 0.37 67
IV.ATCC.EHZ. 2017-03-21T16:24:59.47 3.0 positive manual P -0.06 0
IV.EL6.EHZ. 2017-03-21T16:24:59.01 3.0 negative manual P -0.15 0
IV.FOSV.EHZ. 2017-03-21T16:24:59.88 3.0 undecidable manual P -0.27 0
IV.T1247.HHZ. 2017-03-21T16:24:58.76 3.0 undecidable manual S 0.21 0
IV.T1256.HHZ. 2017-03-21T16:24:58.08 0.3 undecidable manual S 359 31.4463 97 0.06 71
IV.SNTG.HHZ. 2017-03-21T16:24:58.36 3.0 positive manual P -0.06 0
IV.MOMA.HHZ. 2017-03-21T16:24:57.22 3.0 negative manual P 0.24 0
IV.ASSB.HHZ. 2017-03-21T16:24:57.47 3.0 positive manual P -0.14 0
IV.T1216.EHZ. 2017-03-21T16:24:56.35 0.3 undecidable manual S 317 25.4523 100 -0.1 71
IV.RM33.EHZ. 2017-03-21T16:24:56.10 0.3 undecidable manual S 184 23.8539 101 0.08 73
IV.OFFI.HHZ. 2017-03-21T16:24:56.09 3.0 undecidable manual P 0.86 0
IV.T1217.EHZ. 2017-03-21T16:24:56.17 0.3 undecidable manual S 267 24.6531 100 -0.06 72
IV.CAMP.HHZ. 2017-03-21T16:24:56.26 0.3 undecidable manual S 145 25.2525 100 -0.14 70
IV.T1220.EHZ. 2017-03-21T16:24:55.22 0.1 positive manual P 345 44.5221 94 -0.22 90
IV.T1241.EHZ. 2017-03-21T16:24:55.07 0.3 undecidable manual S 47 21.867 103 -0.43 67
IV.MC2.EHZ. 2017-03-21T16:24:55.96 0.3 undecidable manual S 350 21.1677 104 0.63 63
IV.CESI.HHZ. 2017-03-21T16:24:54.79 0.1 undecidable manual P 320 41.1255 94 -0.12 92
IV.T1219.EHZ. 2017-03-21T16:24:54.68 0.1 positive manual P 333 41.3253 94 -0.26 89
IV.T1222.EHZ. 2017-03-21T16:24:54.52 0.1 undecidable manual P 204 39.1275 95 -0.09 92
IV.T1211.EHZ. 2017-03-21T16:24:54.84 0.1 undecidable manual P 236 37.4292 95 0.5 87
IV.GIGS.HHZ. 2017-03-21T16:24:54.51 3.0 undecidable manual P -0.26 0
IV.GUMA.HHZ. 2017-03-21T16:24:54.73 0.1 undecidable manual P 12 38.5281 95 0.21 91
IV.T1245.HHZ. 2017-03-21T16:24:53.95 0.3 undecidable manual S 346 15.2736 115 0.12 72
IV.T1212.EHZ. 2017-03-21T16:24:53.69 0.3 undecidable manual S 282 15.6732 114 -0.25 71
IV.T1256.HHZ. 2017-03-21T16:24:53.20 0.6 positive manual P 359 31.4463 97 -0.23 46
IV.TERO.HHZ. 2017-03-21T16:24:53.27 3.0 positive manual P -0.16 0
IV.SMA1.EHZ. 2017-03-21T16:24:53.19 0.3 undecidable manual S 141 13.2756 121 -0.17 72
IV.T1217.EHZ. 2017-03-21T16:24:52.33 0.6 negative manual P 267 24.6531 100 -0.06 48
IV.CAMP.HHZ. 2017-03-21T16:24:52.38 0.1 positive manual P 145 25.2525 100 -0.11 94
IV.T1218.EHZ. 2017-03-21T16:24:52.84 0.3 undecidable manual S 238 11.2776 127 -0.09 74
IV.T1216.EHZ. 2017-03-21T16:24:52.28 0.1 positive manual P 317 25.4523 100 -0.24 92
IV.T1299.EHZ. 2017-03-21T16:24:52.89 0.3 undecidable manual S 158 10.6782 130 0.09 73
IV.RM33.EHZ. 2017-03-21T16:24:52.29 0.3 undecidable manual P 184 23.8539 101 0.02 73
IV.T1241.EHZ. 2017-03-21T16:24:51.81 0.1 undecidable manual P 47 21.867 103 -0.16 94
IV.T1214.EHZ. 2017-03-21T16:24:51.59 0.6 undecidable manual S 334 4.4955 157 -0.21 49
IV.MC2.EHZ. 2017-03-21T16:24:51.80 0.1 positive manual P 350 21.1677 104 -0.07 96
IV.T1299.EHZ. 2017-03-21T16:24:50.58 0.1 negative manual P 158 10.6782 130 0.17 97
IV.SMA1.EHZ. 2017-03-21T16:24:50.76 0.1 negative manual P 141 13.2756 121 0.03 99
IV.T1245.HHZ. 2017-03-21T16:24:50.92 0.1 undecidable manual P 346 15.2736 115 -0.08 97
IV.T1218.EHZ. 2017-03-21T16:24:50.57 0.1 undecidable manual P 238 11.2776 127 0.09 98
IV.T1212.EHZ. 2017-03-21T16:24:50.99 0.1 positive manual P 282 15.6732 114 -0.08 97
IV.T1214.EHZ. 2017-03-21T16:24:49.85 0.1 undecidable manual P 334 4.4955 157 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHE. ML:1.6 0.000075 0.26 AML other m 2017-03-21T16:25:06.99
IV.ASSB.HHN. ML:1.7 0.00009800000000000001 0.3 AML other m 2017-03-21T16:25:07.81
IV.ATCC.EHE. ML:1.5 0.0000515 0.36 AML other m 2017-03-21T16:25:11.33
IV.ATCC.EHN. ML:1.5 0.000052699999999999993 0.24 AML other m 2017-03-21T16:25:12.19
IV.CAMP.HHN. ML:1.6 0.000237 0.24 AML other m 2017-03-21T16:24:56.46
IV.CAMP.HHE. ML:1.5 0.0001715 0.2 AML other m 2017-03-21T16:24:56.34
IV.CESI.HHN. ML:1.6 0.000146 0.1 AML other m 2017-03-21T16:25:01.85
IV.CESI.HHE. ML:1.6 0.0001245 0.22 AML other m 2017-03-21T16:25:03.27
IV.FOSV.EHE. ML:1.4 0.00003345 0.28 AML other m 2017-03-21T16:25:11.06
IV.FOSV.EHN. ML:1.5 0.00004285 1.64 AML other m 2017-03-21T16:25:16.86
IV.GIGS.HHE. ML:0.9 0.0000235 0.46 AML other m 2017-03-21T16:25:03.30
IV.GIGS.HHN. ML:1.0 0.0000314 0.82 AML other m 2017-03-21T16:25:01.26
IV.GUMA.HHN. ML:2.1 0.0004605 1.62 AML other m 2017-03-21T16:25:00.05
IV.GUMA.HHE. ML:2.3 0.000753 1.74 AML other m 2017-03-21T16:25:01.00
IV.MOMA.HHN. ML:1.5 0.00007364999999999999 0.28 AML other m 2017-03-21T16:25:05.85
IV.MOMA.HHE. ML:1.6 0.00010164999999999999 0.28 AML other m 2017-03-21T16:25:05.97
IV.RM33.HNN. ML:2.1 0.0007905 0.22 AML other m 2017-03-21T16:24:56.33
IV.RM33.HNE. ML:1.9 0.00046750000000000003 0.92 AML other m 2017-03-21T16:24:57.17
IV.RM33.EHE. ML:1.9 0.00044950000000000003 0.24 AML other m 2017-03-21T16:24:56.32
IV.RM33.EHN. ML:2.1 0.000773 0.22 AML other m 2017-03-21T16:24:56.33
IV.SMA1.EHN. ML:2.0 0.0008725 0.32 AML other m 2017-03-21T16:24:53.28
IV.SMA1.EHE. ML:1.8 0.000597 0.16 AML other m 2017-03-21T16:24:53.41
IV.SNTG.HHE. ML:1.4 0.0000467 0.12 AML other m 2017-03-21T16:25:08.06
IV.SNTG.HHN. ML:1.3 0.000041349999999999995 0.66 AML other m 2017-03-21T16:25:09.33
IV.T1212.EHE. ML:1.6 0.000322 0.28 AML other m 2017-03-21T16:24:53.72
IV.T1212.EHN. ML:1.8 0.0005045 1.34 AML other m 2017-03-21T16:24:54.83
IV.T1214.HNN. ML:2.4 0.0035 0.24 AML other m 2017-03-21T16:24:51.61
IV.T1214.EHN. ML:2.4 0.0033799999999999998 0.24 AML other m 2017-03-21T16:24:51.61
IV.T1214.HNE. ML:2.3 0.002555 0.2 AML other m 2017-03-21T16:24:51.63
IV.T1214.EHE. ML:2.3 0.002385 0.2 AML other m 2017-03-21T16:24:51.64
IV.T1216.EHE. ML:1.6 0.00021599999999999996 0.08 AML other m 2017-03-21T16:24:56.45
IV.T1216.EHN. ML:1.8 0.000372 0.7 AML other m 2017-03-21T16:24:57.53
IV.T1217.EHN. ML:1.5 0.0001905 1.12 AML other m 2017-03-21T16:24:56.93
IV.T1217.EHE. ML:1.5 0.000165 0.74 AML other m 2017-03-21T16:24:56.61
IV.T1218.EHE. ML:2.3 0.00206 1.86 AML other m 2017-03-21T16:24:53.98
IV.T1218.HNE. ML:2.3 0.00216 1.86 AML other m 2017-03-21T16:24:53.98
IV.T1218.EHN. ML:2.0 0.0009105000000000001 1.36 AML other m 2017-03-21T16:24:52.99
IV.T1218.HNN. ML:1.9 0.000823 1.36 AML other m 2017-03-21T16:24:52.99
IV.T1219.EHN. ML:2.0 0.00031999999999999997 0.18 AML other m 2017-03-21T16:25:00.85
IV.T1219.EHE. ML:1.8 0.00021799999999999999 1.9 AML other m 2017-03-21T16:25:01.97
IV.T1220.EHN. ML:2.4 0.0008155 0.16 AML other m 2017-03-21T16:25:02.77
IV.T1220.EHE. ML:2.2 0.0004235 0.94 AML other m 2017-03-21T16:25:04.51
IV.T1241.EHN. ML:1.3 0.00013135 0.42 AML other m 2017-03-21T16:24:55.10
IV.T1241.EHE. ML:1.3 0.000121 0.56 AML other m 2017-03-21T16:24:57.17
IV.T1245.HHN. ML:2.0 0.0009235 0.26 AML other m 2017-03-21T16:24:54.53
IV.T1245.HNN. ML:2.1 0.0009995 0.28 AML other m 2017-03-21T16:24:54.54
IV.T1245.HHE. ML:2.0 0.0008075 0.22 AML other m 2017-03-21T16:24:54.77
IV.T1245.HNE. ML:2.0 0.0007629999999999999 0.18 AML other m 2017-03-21T16:24:54.76
IV.T1247.HHN. ML:1.8 0.0002445 0.3 AML other m 2017-03-21T16:25:00.17
IV.T1247.HHE. ML:1.7 0.0002035 0.92 AML other m 2017-03-21T16:25:00.41
IV.T1256.HHN. ML:1.3 0.00008690000000000001 1.14 AML other m 2017-03-21T16:25:00.39
IV.T1256.HHE. ML:1.4 0.0001163 0.9 AML other m 2017-03-21T16:24:58.87
IV.T1299.EHE. ML:1.9 0.000789 1.82 AML other m 2017-03-21T16:24:53.96
IV.T1299.EHN. ML:2.0 0.0010035 1.8 AML other m 2017-03-21T16:24:52.95
IV.T1299.HNE. ML:1.9 0.0007545 1.82 AML other m 2017-03-21T16:24:53.96
IV.T1299.HNN. ML:2.0 0.0009915 1.82 AML other m 2017-03-21T16:24:52.96
IV.TERO.HNE. ML:1.6 0.00016445 0.5 AML other m 2017-03-21T16:24:58.93
IV.TERO.HHN. ML:1.6 0.000189 0.46 AML other m 2017-03-21T16:25:00.46
IV.TERO.HNN. ML:1.7 0.00020500000000000002 0.46 AML other m 2017-03-21T16:25:00.46
IV.TERO.HHE. ML:1.6 0.0001875 0.5 AML other m 2017-03-21T16:24:58.93
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