Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 14-04-2021 and time 23:34:13 (UTC) in region 5 km S Pizzoli (AQ)

A magnitude ML 1.2 earthquake occured in region: 5 km S Pizzoli (AQ), on

  • 14-04-2021 23:34:13 (UTC)
  • 15-04-2021 01:34:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3970, 13.3100 at 8 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
Pizzoli AQ 5 4326 4326
Scoppito AQ 5 3727 8053
Barete AQ 7 737 8790
L'Aquila AQ 9 69753 78543
Cagnano Amiterno AQ 10 1369 79912
Tornimparte AQ 12 3187 83099
Lucoli AQ 12 1011 84110
Capitignano AQ 14 665 84775
Montereale AQ 15 2581 87356
Ocre AQ 18 1167 88523
Fossa AQ 19 721 89244
Campotosto AQ 19 542 89786
Antrodoco RI 19 2588 92374
Borbona RI 19 617 92991

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km NW of L'Aquila (69753 inhabitants)
44 Km SW of Teramo (54892 inhabitants)
57 Km E of Terni (111501 inhabitants)
64 Km NE of Tivoli (56533 inhabitants)
65 Km NE of Guidonia Montecelio (88673 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
71 Km W of Chieti (51815 inhabitants)
75 Km W of Pescara (121014 inhabitants)
80 Km SE of Foligno (57155 inhabitants)
88 Km NE of Roma (2864731 inhabitants)
90 Km NE of Velletri (53303 inhabitants)
99 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 1.2 2021-04-14
23:34:13		 42.3968 13.31 8 2021-04-14
23:47:10		 Sala Sismica INGV-Roma 89101781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-14 23:34:13 ± 0.09
Latitude 42.3968 ± 0.0045
Longitude 13.3100 ± 0.0061
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 89101781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 537
Semi-minor axis of confidence ellipse (meter) 60
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 231
Circular confidence region, given by single value of horizontal uncertainty (meter) 540.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.45955
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 89101781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-14 23:47:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IT.RMMM.HGZ. 2021-04-14T23:34:30.53 3.0 undecidable manual Sg 0.02 0
IV.VCEL.EHZ. 2021-04-14T23:34:29.12 0.3 undecidable manual S 90 43.4232 50 0.87 55
IV.ARRO.EHZ. 2021-04-14T23:34:29.56 0.6 undecidable manual S 295 48.9177 50 -0.13 46
IV.NRCA.HHZ. 2021-04-14T23:34:29.90 0.3 undecidable manual S 342 51.0156 50 -0.36 66
IV.T0110.HHZ. 2021-04-14T23:34:28.46 0.6 undecidable manual S 116 42.5241 50 0.47 43
IV.T1299.HNE. 2021-04-14T23:34:23.07 0.3 undecidable manual S 355 26.4513 108 -0.14 72
IV.SMA1.EHZ. 2021-04-14T23:34:23.55 0.3 undecidable manual S 5 26.0517 108 0.48 67
IV.FAGN.HHZ. 2021-04-14T23:34:23.38 0.3 undecidable manual S 123 26.751 107 0.07 73
IV.VCEL.EHZ. 2021-04-14T23:34:22.02 0.1 undecidable manual P 90 43.4232 50 -0.03 95
IV.ARRO.EHZ. 2021-04-14T23:34:22.59 1.0 undecidable manual P 295 48.9177 50 -0.29 22
IV.NRCA.HHZ. 2021-04-14T23:34:22.63 0.6 undecidable manual P 342 51.0156 50 -0.58 41
IV.T0110.HHZ. 2021-04-14T23:34:21.79 0.3 undecidable manual P 116 42.5241 50 -0.11 70
IV.FIAM.HHE. 2021-04-14T23:34:21.50 0.3 undecidable manual S 228 21.2676 111 -0.03 74
IV.GIGS.HHE. 2021-04-14T23:34:21.02 0.3 undecidable manual S 74 22.3554 111 -0.87 58
IV.CAMP.HHE. 2021-04-14T23:34:20.34 0.3 undecidable manual S 28 17.3715 116 0.05 74
IV.RM33.EHZ. 2021-04-14T23:34:20.01 0.3 undecidable manual S 328 14.6742 120 0.55 67
IV.T1299.HNE. 2021-04-14T23:34:19.04 0.3 undecidable manual P 355 26.4513 108 -0.1 72
IV.FAGN.HHZ. 2021-04-14T23:34:19.40 0.3 undecidable manual P 123 26.751 107 0.2 71
IV.TOLF.HHZ. 2021-04-14T23:34:19.00 3.0 undecidable manual P -0.01 0
IV.SMA1.EHZ. 2021-04-14T23:34:18.93 0.6 undecidable manual P 5 26.0517 108 -0.13 48
IV.FIAM.HHE. 2021-04-14T23:34:18.06 0.1 undecidable manual P 228 21.2676 111 -0.11 97
IV.RM33.EHZ. 2021-04-14T23:34:17.23 0.1 undecidable manual P 328 14.6742 120 0.25 95
IV.GIGS.HHE. 2021-04-14T23:34:17.98 0.1 undecidable manual P 74 22.3554 111 -0.4 91
IV.CAMP.HHE. 2021-04-14T23:34:17.58 0.3 undecidable manual P 28 17.3715 116 0.12 73
MN.AQU.HNZ. 2021-04-14T23:34:17.85 0.3 undecidable manual S 121 9.0798 133 -0.03 76
MN.AQU.HNZ. 2021-04-14T23:34:16.14 0.1 undecidable manual P 121 9.0798 133 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHE. ML:1.4 0.00023447329999999998 0.2432 AML other m 2021-04-14T23:34:20.40
IV.RM33.EHN. ML:1.2 0.00016824220000000002 0.2816 AML other m 2021-04-14T23:34:21.47
IV.SMA1.EHN. ML:1.4 0.00014050000000000003 0.32 AML other m 2021-04-14T23:34:24.44
IV.SMA1.EHE. ML:1.2 0.0001008 0.8 AML other m 2021-04-14T23:34:24.44
IV.T0110.HHN. ML:1.2 0.0000539 0.26 AML other m 2021-04-14T23:34:29.19
IV.T0110.HHE. ML:1.1 0.00003859462 0.2816 AML other m 2021-04-14T23:34:32.54
IV.RM33.HNE. ML:1.4 0.0002501116 0.2176 AML other m 2021-04-14T23:34:20.98
IV.RM33.HNN. ML:1.2 0.00018702765 0.256 AML other m 2021-04-14T23:34:21.47
IV.VCEL.EHE. ML:1.0 0.000037186675 0.1792 AML other m 2021-04-14T23:34:31.10
IV.VCEL.EHN. ML:1.1 0.000040617994999999996 0.1792 AML other m 2021-04-14T23:34:31.86
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