Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 27-03-2021 and time 19:28:40 (Italy) in region 3 km W Cagnano Amiterno (AQ)

A magnitude ML 1.7 earthquake occured in region: 3 km W Cagnano Amiterno (AQ), on

  • 27-03-2021 18:28:40 (UTC)
  • 27-03-2021 19:28:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4550, 13.1890 at 13 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 3 1369 1369
Barete AQ 8 737 2106
Borbona RI 8 617 2723
Pizzoli AQ 9 4326 7049
Montereale AQ 9 2581 9630
Antrodoco RI 10 2588 12218
Scoppito AQ 11 3727 15945
Posta RI 11 694 16639
Micigliano RI 11 127 16766
Capitignano AQ 12 665 17431
Borgo Velino RI 12 972 18403
Castel Sant'Angelo RI 15 1308 19711
Cittareale RI 18 482 20193
Campotosto AQ 19 542 20735

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NW of L'Aquila (69753 inhabitants)
46 Km E of Terni (111501 inhabitants)
48 Km W of Teramo (54892 inhabitants)
63 Km NE of Guidonia Montecelio (88673 inhabitants)
63 Km NE of Tivoli (56533 inhabitants)
68 Km SE of Foligno (57155 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
81 Km W of Chieti (51815 inhabitants)
84 Km W of Pescara (121014 inhabitants)
85 Km NE of Roma (2864731 inhabitants)
89 Km E of Viterbo (67173 inhabitants)
92 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
18:28:40		 42.4552 13.1888 13 2021-07-12
16:55:07		 Bollettino Sismico Italiano INGV 89349721
Reviewed
Rev100 		ML 1.7 2021-03-27
18:28:40		 42.4507 13.1788 11 2021-03-27
18:34:54		 Sala Sismica INGV-Roma 88529381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-27 18:28:40 ± 0.04
Latitude 42.4552 ± 0.0018
Longitude 13.1888 ± 0.0024
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 89349721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 250
Semi-minor axis of confidence ellipse (meter) 29
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 218
Circular confidence region, given by single value of horizontal uncertainty (meter) 250.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.05666
Epicentral distance of station farthest from the epicenter (degree) 0.63672
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 89349721
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-07-09 11:14:59

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 88529381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-27 18:34:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VCEL.EHZ. 2021-03-27T18:28:57.98 0.6 undecidable manual S 97 53.8017 93 0.29 44
IV.MMO1.EHZ. 2021-03-27T18:28:57.10 0.3 undecidable manual S 13 50.5161 93 0.28 67
IV.MC2.EHZ. 2021-03-27T18:28:56.78 0.6 undecidable manual S 0 50.616 93 -0.06 47
IV.NRCA.HHZ. 2021-03-27T18:28:54.54 0.6 undecidable manual S 352 42.4242 94 -0.12 47
IV.MTRA.EHZ. 2021-03-27T18:28:53.22 0.3 undecidable manual S 27 37.5291 95 -0.13 71
IV.TERO.HHZ. 2021-03-27T18:28:53.37 0.6 undecidable manual S 61 38.7279 94 -0.3 46
IV.CSP1.EHZ. 2021-03-27T18:28:53.40 0.6 undecidable manual P 1 70.6737 92 0.23 44
IV.MF5.EHZ. 2021-03-27T18:28:52.13 0.6 undecidable manual P 20 63.0924 92 0.13 45
IV.GAVE.EHZ. 2021-03-27T18:28:52.83 0.6 undecidable manual S 318 35.6421 95 -0.03 48
IV.SRES.HHN. 2021-03-27T18:28:52.00 1.0 undecidable manual P 247 60.6948 92 0.36 22
IV.FDMO.HHZ. 2021-03-27T18:28:52.26 1.0 undecidable manual P 353 64.9905 92 -0.05 23
IV.GIGS.HHN. 2021-03-27T18:28:51.54 0.3 undecidable manual S 90 31.4463 96 -0.19 71
IV.MOMA.HHZ. 2021-03-27T18:28:51.84 0.6 undecidable manual P 308 63.5919 92 -0.25 44
IV.MTCE.HHZ. 2021-03-27T18:28:51.82 0.6 undecidable manual P 218 60.3951 92 0.23 45
IV.MMO1.EHZ. 2021-03-27T18:28:50.02 0.3 undecidable manual P 13 50.5161 93 -0.05 70
IV.T0110.HHZ. 2021-03-27T18:28:50.74 0.6 undecidable manual P 117 54.3012 93 0.09 46
IV.CESX.HHZ. 2021-03-27T18:28:50.25 0.6 undecidable manual P 289 52.1034 93 -0.06 46
IV.MC2.EHZ. 2021-03-27T18:28:50.15 0.3 undecidable manual P 0 50.616 93 0.06 71
IV.VCEL.EHZ. 2021-03-27T18:28:50.76 0.6 undecidable manual P 97 53.8017 93 0.18 45
MN.AQU.HNN. 2021-03-27T18:28:49.06 0.6 undecidable manual S 122 20.9679 103 0.09 49
IV.SMA1.EHZ. 2021-03-27T18:28:49.62 0.3 undecidable manual S 32 22.8549 101 0.15 72
IV.NRCA.HHZ. 2021-03-27T18:28:49.05 0.3 undecidable manual P 352 42.4242 94 0.22 69
IV.T1299.EHZ. 2021-03-27T18:28:49.08 0.3 undecidable manual S 21 21.2676 103 0.02 75
IV.LNSS.HHZ. 2021-03-27T18:28:48.86 0.3 undecidable manual S 324 20.3685 104 0.03 75
IV.FAGN.HHZ. 2021-03-27T18:28:48.12 1.0 undecidable manual P 123 38.628 94 -0.12 24
IV.ARRO.EHZ. 2021-03-27T18:28:48.03 0.3 undecidable manual P 292 37.2294 95 0 72
IV.FIAM.HHZ. 2021-03-27T18:28:48.98 0.6 undecidable manual S 196 21.5673 102 -0.16 48
IV.CAMP.HHZ. 2021-03-27T18:28:48.57 0.6 undecidable manual S 63 20.0688 104 -0.18 49
IV.TERO.HHZ. 2021-03-27T18:28:47.97 0.3 undecidable manual P 61 38.7279 94 -0.28 69
IV.MTRA.EHZ. 2021-03-27T18:28:47.83 0.6 undecidable manual P 27 37.5291 95 -0.24 46
IV.GAVE.EHZ. 2021-03-27T18:28:47.68 0.1 undecidable manual P 318 35.6421 95 -0.11 95
IV.GIGS.HHN. 2021-03-27T18:28:46.82 0.3 undecidable manual P 90 31.4463 96 -0.32 69
IV.FIAM.HHZ. 2021-03-27T18:28:45.63 0.3 undecidable manual P 196 21.5673 102 0 74
MN.AQU.HNN. 2021-03-27T18:28:45.56 0.3 undecidable manual P 122 20.9679 103 0.02 75
IV.T1299.EHZ. 2021-03-27T18:28:45.66 0.3 undecidable manual P 21 21.2676 103 0.06 74
IV.CAMP.HHZ. 2021-03-27T18:28:45.40 0.1 undecidable manual P 63 20.0688 104 -0.02 100
IV.LNSS.HHZ. 2021-03-27T18:28:45.51 0.1 undecidable manual P 324 20.3685 104 0.05 100
IV.RM33.EHZ. 2021-03-27T18:28:45.65 0.6 undecidable manual S 19 6.2937 147 -0.06 51
IV.SMA1.EHZ. 2021-03-27T18:28:45.95 0.3 undecidable manual P 32 22.8549 101 0.12 73
IV.RM33.EHZ. 2021-03-27T18:28:43.80 0.1 undecidable manual P 19 6.2937 147 0.14 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.HNN. ML:2.1 0.0014750000000000002 0.24 AML other m 2021-03-27T18:28:45.88
IV.RM33.EHN. ML:2.1 0.001435 0.24 AML other m 2021-03-27T18:28:45.89
IV.RM33.EHE. ML:2.4 0.003255 0.3 AML other m 2021-03-27T18:28:45.83
IV.RM33.HNE. ML:2.4 0.00335 0.32 AML other m 2021-03-27T18:28:45.82
IV.LNSS.HHE. ML:1.9 0.000575 1.04 AML other m 2021-03-27T18:28:48.41
IV.LNSS.HHN. ML:2.0 0.00064 1.56 AML other m 2021-03-27T18:28:49.16
IV.SMA1.EHN. ML:1.7 0.00032900000000000003 0.28 AML other m 2021-03-27T18:28:50.02
IV.SMA1.EHE. ML:2.1 0.0006990000000000001 0.38 AML other m 2021-03-27T18:28:50.23
IV.ARRO.EHE. ML:1.7 0.00016949999999999997 0.18 AML other m 2021-03-27T18:28:54.05
IV.TERO.HHE. ML:1.2 0.0000585 0.08 AML other m 2021-03-27T18:28:54.55
IV.GAVE.EHN. ML:1.6 0.00016649999999999998 1 AML other m 2021-03-27T18:28:54.75
IV.ARRO.EHN. ML:1.7 0.0001785 0.16 AML other m 2021-03-27T18:28:54.97
IV.NRCA.HHE. ML:1.8 0.0001915 1.04 AML other m 2021-03-27T18:28:55.46
IV.NRCA.HHN. ML:1.5 0.00010714999999999999 0.14 AML other m 2021-03-27T18:28:55.51
IV.GAVE.EHE. ML:1.7 0.00017649999999999998 1.4 AML other m 2021-03-27T18:28:55.81
IV.TERO.HHN. ML:1.3 0.00007165 0.7 AML other m 2021-03-27T18:28:56.51
IV.FAGN.HHN. ML:1.7 0.00017749999999999998 0.32 AML other m 2021-03-27T18:28:56.65
IV.FAGN.HHE. ML:1.6 0.0001465 0.44 AML other m 2021-03-27T18:28:58.96
IV.CESX.HHN. ML:1.2 0.00004155 1.34 AML other m 2021-03-27T18:29:00.04
IV.CESX.HHE. ML:1.3 0.000048899999999999996 0.42 AML other m 2021-03-27T18:29:00.27
IV.MOMA.HHE. ML:1.7 0.00009834999999999999 1.86 AML other m 2021-03-27T18:29:02.94
IV.MOMA.HHN. ML:1.6 0.00007805000000000001 0.66 AML other m 2021-03-27T18:29:02.02
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