Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 27-03-2021 and time 18:10:38 (Italy) in region 2 km W Cagnano Amiterno (AQ)

A magnitude ML 1.7 earthquake occured in region: 2 km W Cagnano Amiterno (AQ), on

  • 27-03-2021 17:10:38 (UTC)
  • 27-03-2021 18:10:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4580, 13.1980 at 12 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.

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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
Cagnano Amiterno AQ 2 1369 1369
Barete AQ 7 737 2106
Borbona RI 8 617 2723
Pizzoli AQ 8 4326 7049
Montereale AQ 8 2581 9630
Antrodoco RI 11 2588 12218
Scoppito AQ 11 3727 15945
Capitignano AQ 11 665 16610
Posta RI 11 694 17304
Micigliano RI 12 127 17431
Borgo Velino RI 13 972 18403
Castel Sant'Angelo RI 15 1308 19711
Campotosto AQ 18 542 20253
Cittareale RI 18 482 20735

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of L'Aquila (69753 inhabitants)
47 Km E of Terni (111501 inhabitants)
47 Km W of Teramo (54892 inhabitants)
64 Km NE of Guidonia Montecelio (88673 inhabitants)
64 Km NE of Tivoli (56533 inhabitants)
69 Km SE of Foligno (57155 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
81 Km W of Chieti (51815 inhabitants)
83 Km W of Pescara (121014 inhabitants)
86 Km NE of Roma (2864731 inhabitants)
90 Km E of Viterbo (67173 inhabitants)
93 Km NE of Velletri (53303 inhabitants)
98 Km SE of Perugia (166134 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 1.7 2021-03-27
17:10:38		 42.4583 13.1977 13 2021-07-12
16:55:06		 Bollettino Sismico Italiano INGV 89260371
Reviewed
Rev100 		ML 1.7 2021-03-27
17:10:38		 42.4493 13.1817 10 2021-03-27
17:16:39		 Sala Sismica INGV-Roma 88527171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-27 17:10:38 ± 0.05
Latitude 42.4583 ± 0.0027
Longitude 13.1977 ± 0.0037
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89260371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 39
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 233
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.70507
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 26
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 89260371
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-19 13:58:50

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 88527171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-27 17:16:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RIBO.EHZ.01 2021-03-27T17:11:28.65 3.0 undecidable manual Sn -0.2 0
IV.SGG.HHZ. 2021-03-27T17:11:23.74 3.0 undecidable manual S 0.29 0
IV.CRTC.HHZ. 2021-03-27T17:11:03.01 3.0 negative manual P 0.67 0
IV.MC2.EHZ. 2021-03-27T17:10:54.34 0.3 undecidable manual S 359 50.2164 92 0.35 67
IV.MMO1.EHN. 2021-03-27T17:10:54.20 0.6 undecidable manual S 12 50.0166 92 0.27 45
IV.VIVA.HHZ. 2021-03-27T17:10:53.72 3.0 positive manual P 0.05 0
IV.NRCA.HHZ. 2021-03-27T17:10:51.76 0.3 undecidable manual S 351 42.1245 93 -0.07 71
IV.ASSB.HHZ. 2021-03-27T17:10:51.82 0.3 undecidable manual P 326 78.2661 91 0.22 65
IV.CSP1.EHZ. 2021-03-27T17:10:50.57 0.6 undecidable manual P 0 70.2741 91 0.21 44
IV.TERO.HNZ. 2021-03-27T17:10:50.33 0.6 undecidable manual S 61 37.8288 93 -0.36 45
IV.MTRA.EHZ. 2021-03-27T17:10:50.06 0.6 undecidable manual S 26 36.8298 93 -0.36 45
IV.MF5.EHZ. 2021-03-27T17:10:49.29 0.3 undecidable manual P 20 62.493 92 0.12 68
IV.MTCE.HHZ. 2021-03-27T17:10:49.22 0.6 undecidable manual P 218 61.0944 92 0.27 45
IV.MOMA.HHZ. 2021-03-27T17:10:49.25 0.3 undecidable manual P 307 63.9915 92 -0.14 67
IV.CERT.HNE. 2021-03-27T17:10:49.02 0.1 undecidable manual P 198 59.1963 92 0.36 88
IV.T0110.HHZ. 2021-03-27T17:10:48.01 0.3 undecidable manual P 118 53.8017 92 0.18 68
IV.GIGS.HHZ. 2021-03-27T17:10:48.58 0.6 undecidable manual S 91 30.747 94 -0.2 47
IV.CESX.HHZ. 2021-03-27T17:10:47.28 0.3 undecidable manual P 289 52.6029 92 -0.37 65
IV.MMO1.EHN. 2021-03-27T17:10:47.30 0.3 undecidable manual P 12 50.0166 92 0.05 71
IV.PTQR.HHZ. 2021-03-27T17:10:47.25 0.3 undecidable manual P 161 51.2154 92 -0.18 68
IV.VCEL.EHZ. 2021-03-27T17:10:47.96 0.3 undecidable manual P 97 53.1024 92 0.24 68
IV.MC2.EHZ. 2021-03-27T17:10:47.46 0.3 undecidable manual P 359 50.2164 92 0.18 69
IV.T1299.HNZ. 2021-03-27T17:10:46.15 0.3 undecidable manual S 19 20.6682 100 0.02 75
IV.FIAM.HHZ. 2021-03-27T17:10:46.29 0.3 undecidable manual S 197 22.1556 99 -0.22 71
MN.AQU.HNZ. 2021-03-27T17:10:46.13 0.3 undecidable manual S 124 20.5683 100 0.04 75
IV.SMA1.EHZ. 2021-03-27T17:10:46.68 0.3 undecidable manual S 30 22.1556 99 0.17 72
IV.ARRO.EHZ. 2021-03-27T17:10:45.15 0.3 undecidable manual P 291 37.7289 93 -0.21 69
IV.CAMP.HHZ. 2021-03-27T17:10:45.83 0.3 undecidable manual S 64 19.2696 102 0.07 74
IV.FAGN.HHZ. 2021-03-27T17:10:45.58 0.3 undecidable manual P 124 38.2284 93 0.16 71
IV.LNSS.HHZ. 2021-03-27T17:10:45.89 0.3 undecidable manual S 321 20.5683 100 -0.2 71
IV.NRCA.HHZ. 2021-03-27T17:10:45.82 0.3 undecidable manual P 351 42.1245 93 -0.22 69
IV.TERO.HNZ. 2021-03-27T17:10:45.04 0.1 undecidable manual P 61 37.8288 93 -0.34 91
IV.MTRA.EHZ. 2021-03-27T17:10:44.83 0.1 undecidable manual P 26 36.8298 93 -0.39 90
IV.GIGS.HHZ. 2021-03-27T17:10:44.03 0.1 undecidable manual P 91 30.747 94 -0.24 94
IV.GAVE.EHZ. 2021-03-27T17:10:44.97 0.3 undecidable manual P 316 35.8419 93 -0.1 71
IV.SMA1.EHZ. 2021-03-27T17:10:43.18 0.3 undecidable manual P 30 22.1556 99 0.22 72
IV.RM33.EHZ. 2021-03-27T17:10:42.75 0.6 undecidable manual S 14 5.7942 148 0 51
IV.LNSS.HHZ. 2021-03-27T17:10:42.75 0.1 undecidable manual P 321 20.5683 100 0.03 100
IV.T1299.HNZ. 2021-03-27T17:10:42.88 0.1 undecidable manual P 19 20.6682 100 0.14 98
IV.CAMP.HHZ. 2021-03-27T17:10:42.59 0.1 undecidable manual P 64 19.2696 102 0.06 99
IV.FIAM.HHZ. 2021-03-27T17:10:42.93 0.3 undecidable manual P 197 22.1556 99 -0.03 74
MN.AQU.HNZ. 2021-03-27T17:10:42.75 0.1 undecidable manual P 124 20.5683 100 0.03 100
IV.RM33.EHZ. 2021-03-27T17:10:40.99 0.1 undecidable manual P 14 5.7942 148 0.2 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.HNE. ML:2.1 0.00183 1.7 AML other m 2021-03-27T17:10:43.98
IV.RM33.EHE. ML:2.1 0.00175 1.68 AML other m 2021-03-27T17:10:43.98
IV.RM33.HNN. ML:1.8 0.0008539999999999999 1.02 AML other m 2021-03-27T17:10:43.30
IV.RM33.EHN. ML:1.8 0.0007995 1.02 AML other m 2021-03-27T17:10:43.31
IV.LNSS.HHN. ML:2.0 0.0007224999999999999 0.18 AML other m 2021-03-27T17:10:46.34
IV.FIAM.HHN. ML:1.2 0.0000988 0.58 AML other m 2021-03-27T17:10:46.57
IV.LNSS.HHE. ML:1.9 0.000491 0.54 AML other m 2021-03-27T17:10:46.88
IV.FIAM.HHE. ML:1.2 0.0000886 0.36 AML other m 2021-03-27T17:10:46.74
IV.SMA1.EHN. ML:1.9 0.00046 0.3 AML other m 2021-03-27T17:10:47.16
IV.SMA1.EHE. ML:2.0 0.0007375000000000001 0.36 AML other m 2021-03-27T17:10:47.19
IV.NRCA.HHE. ML:1.8 0.0002075 0.2 AML other m 2021-03-27T17:10:52.03
IV.GAVE.EHE. ML:1.7 0.00017549999999999998 0.28 AML other m 2021-03-27T17:10:52.30
IV.GAVE.EHN. ML:1.6 0.000149 0.74 AML other m 2021-03-27T17:10:52.47
IV.NRCA.HHN. ML:1.6 0.00013000000000000002 0.08 AML other m 2021-03-27T17:10:53.30
IV.T0110.HHN. ML:1.4 0.0000565 1.4 AML other m 2021-03-27T17:10:58.87
IV.MOMA.HHE. ML:1.7 0.0000974 0.16 AML other m 2021-03-27T17:10:59.15
IV.MOMA.HHN. ML:1.5 0.00006725000000000001 0.66 AML other m 2021-03-27T17:10:59.24
IV.T0110.HHE. ML:1.2 0.000038150000000000006 0.44 AML other m 2021-03-27T17:10:59.56
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