Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 28-04-2021 and time 14:46:46 (Italy) in region 3 km NW Capitignano (AQ)

A magnitude ML 1.6 earthquake occured in region: 3 km NW Capitignano (AQ), on

  • 28-04-2021 12:46:46 (UTC)
  • 28-04-2021 14:46:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5420, 13.2870 at 14 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
Capitignano AQ 3 665 665
Montereale AQ 4 2581 3246
Campotosto AQ 7 542 3788
Amatrice RI 10 2657 6445
Barete AQ 10 737 7182
Cagnano Amiterno AQ 10 1369 8551
Pizzoli AQ 12 4326 12877
Borbona RI 13 617 13494
Cittareale RI 13 482 13976
Posta RI 16 694 14670
Crognaleto TE 16 1297 15967
Accumoli RI 17 667 16634
Scoppito AQ 19 3727 20361

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NW of L'Aquila (69753 inhabitants)
37 Km W of Teramo (54892 inhabitants)
52 Km E of Terni (111501 inhabitants)
66 Km SE of Foligno (57155 inhabitants)
71 Km W of Montesilvano (53738 inhabitants)
75 Km W of Chieti (51815 inhabitants)
76 Km NE of Tivoli (56533 inhabitants)
76 Km NE of Guidonia Montecelio (88673 inhabitants)
77 Km W of Pescara (121014 inhabitants)
97 Km SE of Perugia (166134 inhabitants)
98 Km NE of Roma (2864731 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
Bulletin
Rev1000 		ML 1.6 2021-04-28
12:46:46		 42.5417 13.2868 14 2021-07-12
16:55:14		 Bollettino Sismico Italiano INGV 90901881
Reviewed
Rev100 		ML 1.6 2021-04-28
12:46:47		 42.5493 13.2817 14 2021-04-28
12:54:53		 Sala Sismica INGV-Roma 89555571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-28 12:46:46 ± 0.11
Latitude 42.5417 ± 0.0045
Longitude 13.2868 ± 0.0049
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90901881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 425
Semi-minor axis of confidence ellipse (meter) 381
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 194
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.58816
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.1
Num. used stations 18
Type of magnitude ML
Reference to an origin 89555571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-28 12:54:53

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 90901881
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-14 16:22:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ZONE.HHZ. 2021-04-28T12:48:44.32 3.0 undecidable manual Sg 13.2 0
IV.CTI.HHZ. 2021-04-28T12:48:39.94 3.0 undecidable manual Sg 14.89 0
IV.TDS.HHZ. 2021-04-28T12:48:33.92 3.0 undecidable manual Sg 9.25 0
IV.ZEN8.EHZ. 2021-04-28T12:48:23.55 3.0 undecidable manual Sn 0.87 0
NI.VINO.HHZ. 2021-04-28T12:48:20.82 3.0 undecidable manual Sn -4.57 0
IV.SBPO.HNZ. 2021-04-28T12:48:17.29 3.0 undecidable manual Sg 8.37 0
IV.AGLI.HHZ. 2021-04-28T12:48:15.34 3.0 undecidable manual Sn -1.89 0
IV.MCPD.HHZ. 2021-04-28T12:47:58.43 3.0 positive manual Pn 5.09 0
IV.EPIT.HHZ. 2021-04-28T12:47:56.36 3.0 negative manual Pn -1.96 0
MN.VSL.HHZ. 2021-04-28T12:47:54.63 3.0 negative manual Pn 5.52 0
IV.VBKN.HHZ. 2021-04-28T12:47:37.86 3.0 undecidable manual Sn -3.4 0
MN.TRI.HHZ. 2021-04-28T12:47:35.45 3.0 negative manual Pn 0.77 0
IX.STN3.HHZ.02 2021-04-28T12:47:27.85 3.0 positive manual Pn 0.16 0
IV.IFOR.HHZ. 2021-04-28T12:47:16.85 3.0 negative manual Pn 0.22 0
IV.ATCC.EHZ. 2021-04-28T12:47:13.87 3.0 undecidable manual S -0.37 0
IV.CSP1.EHZ. 2021-04-28T12:47:06.32 0.6 undecidable manual S 354 61.3941 93 0.49 42
IV.ARVD.HHZ. 2021-04-28T12:47:03.68 3.0 undecidable manual P -0.86 0
IV.MC2.EHZ. 2021-04-28T12:47:01.25 0.6 undecidable manual S 349 41.8248 95 0.64 41
IV.MMO1.EHZ. 2021-04-28T12:47:00.15 0.6 undecidable manual S 5 39.8268 95 0.06 48
IV.NRCA.HHZ. 2021-04-28T12:46:58.59 0.6 undecidable manual S 337 35.3424 97 -0.3 47
IV.MOMA.HNZ. 2021-04-28T12:46:58.17 1.0 undecidable manual P 297 65.2902 93 -0.29 22
IV.GAVE.EHZ. 2021-04-28T12:46:58.84 0.6 undecidable manual S 298 36.1416 96 -0.28 47
IV.CSP1.EHZ. 2021-04-28T12:46:57.92 0.3 undecidable manual P 354 61.3941 93 0.06 69
IV.T0110.HHZ. 2021-04-28T12:46:57.27 1.0 undecidable manual P 131 53.0025 94 0.7 20
IV.GIGS.HJZ. 2021-04-28T12:46:56.19 0.3 undecidable manual S 113 25.3524 101 -0.08 74
IV.FDMO.HHZ. 2021-04-28T12:46:56.95 0.3 undecidable manual P 344 57.1983 93 -0.28 68
IV.TERO.HHZ. 2021-04-28T12:46:56.47 0.3 undecidable manual S 71 27.4503 100 -0.34 70
IV.MF5.EHN. 2021-04-28T12:46:56.72 0.3 undecidable manual P 16 51.4152 94 0.39 66
IV.MC2.EHZ. 2021-04-28T12:46:55.04 0.6 undecidable manual P 349 41.8248 95 0.19 46
IV.LNSS.HHZ. 2021-04-28T12:46:55.00 0.6 undecidable manual S 289 21.2676 106 -0.2 49
IV.MTRA.EHZ. 2021-04-28T12:46:55.94 0.3 undecidable manual S 21 25.4523 101 -0.36 70
IV.MMO1.EHZ. 2021-04-28T12:46:54.49 0.3 undecidable manual P 5 39.8268 95 -0.06 73
IV.NRCA.HHZ. 2021-04-28T12:46:53.62 0.3 undecidable manual P 337 35.3424 97 -0.23 71
IV.GAVE.EHZ. 2021-04-28T12:46:53.85 0.1 undecidable manual P 298 36.1416 96 -0.13 97
IV.TERO.HHZ. 2021-04-28T12:46:52.58 0.3 undecidable manual P 71 27.4503 100 -0.07 74
IV.SMA1.EHZ. 2021-04-28T12:46:52.88 0.3 undecidable manual S 22 10.5783 132 0.19 75
IV.MTRA.EHZ. 2021-04-28T12:46:52.24 0.3 undecidable manual P 21 25.4523 101 -0.12 74
IV.CAMP.HHN. 2021-04-28T12:46:52.58 0.3 undecidable manual S 94 9.9789 134 0.01 76
IV.GIGS.HJZ. 2021-04-28T12:46:52.35 0.3 undecidable manual P 113 25.3524 101 0.01 75
IV.T1299.EHZ. 2021-04-28T12:46:52.49 0.1 undecidable manual S 358 10.2786 133 -0.13 99
IV.RM33.EHZ. 2021-04-28T12:46:51.80 0.3 undecidable manual S 238 6.993 146 -0.24 74
IV.LNSS.HHZ. 2021-04-28T12:46:51.74 0.1 undecidable manual P 289 21.2676 106 0.01 100
IV.RM33.EHZ. 2021-04-28T12:46:50.04 0.3 undecidable manual P 238 6.993 146 0.14 75
IV.T1299.EHZ. 2021-04-28T12:46:50.38 0.1 undecidable manual P 358 10.2786 133 0.15 100
IV.SMA1.EHZ. 2021-04-28T12:46:50.50 0.1 undecidable manual P 22 10.5783 132 0.23 98
IV.CAMP.HHN. 2021-04-28T12:46:50.42 0.3 undecidable manual P 94 9.9789 134 0.22 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHE. ML:2.0 0.0011678055 0.2048 AML other m 2021-04-28T12:46:52.20
IV.RM33.HNE. ML:2.0 0.0011899999999999999 0.2 AML other m 2021-04-28T12:46:52.21
IV.RM33.EHN. ML:1.8 0.00075705055 0.2048 AML other m 2021-04-28T12:46:52.52
IV.RM33.HNN. ML:1.8 0.0007456658 0.2048 AML other m 2021-04-28T12:46:52.52
IV.SMA1.EHE. ML:2.3 0.0019145205 0.1856 AML other m 2021-04-28T12:46:53.19
IV.SMA1.EHN. ML:2.0 0.0010899999999999998 0.14 AML other m 2021-04-28T12:46:53.20
IV.LNSS.HNE. ML:1.8 0.00036236440000000003 0.1408 AML other m 2021-04-28T12:46:55.31
IV.LNSS.HHE. ML:1.8 0.0003804999999999999 0.12 AML other m 2021-04-28T12:46:55.31
IV.LNSS.HHN. ML:1.7 0.0003155 0.18 AML other m 2021-04-28T12:46:55.34
IV.LNSS.HNN. ML:1.7 0.0003245637 0.1664 AML other m 2021-04-28T12:46:55.35
IV.MTRA.HNN. ML:1.7 0.0002779386 0.1408 AML other m 2021-04-28T12:46:56.04
IV.MTRA.EHN. ML:1.7 0.00028936850000000003 0.1408 AML other m 2021-04-28T12:46:56.05
IV.MTRA.HNE. ML:1.6 0.00023190054999999997 0.1536 AML other m 2021-04-28T12:46:56.22
IV.MTRA.EHE. ML:1.6 0.00021799999999999999 0.18 AML other m 2021-04-28T12:46:56.39
IV.TERO.HHN. ML:1.1 0.000067949365 0.0576 AML other m 2021-04-28T12:46:56.70
IV.TERO.HHE. ML:1.0 0.000050645894999999995 0.0576 AML other m 2021-04-28T12:46:57.31
IV.NRCA.HHN. ML:1.6 0.000143 0.1 AML other m 2021-04-28T12:46:58.94
IV.GAVE.EHE. ML:1.4 0.00009690052 1.744 AML other m 2021-04-28T12:46:58.98
IV.GAVE.EHN. ML:1.2 0.00006399713499999999 0.1792 AML other m 2021-04-28T12:46:59.11
IV.GAVE.HNE. ML:1.4 0.000102570875 0.2496 AML other m 2021-04-28T12:46:59.40
IV.NRCA.HNE. ML:1.6 0.000140935859 0.16 AML other m 2021-04-28T12:46:59.40
IV.NRCA.HHE. ML:1.5 0.00013001715 0.16 AML other m 2021-04-28T12:46:59.40
IV.FDMO.HHN. ML:1.1 0.00002705 0.8 AML other m 2021-04-28T12:47:06.42
IV.FDMO.HHE. ML:1.1 0.00002595 0.52 AML other m 2021-04-28T12:47:06.72
IV.CSP1.EHN. ML:1.5 0.00006378787849999999 1.7568 AML other m 2021-04-28T12:47:08.08
IV.CSP1.EHE. ML:1.4 0.00005278905999999999 0.1792 AML other m 2021-04-28T12:47:08.77
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