Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 22-08-2021 and time 06:05:59 (Italy) in region 5 km W Pizzone (IS)

A magnitude ML 1.4 earthquake occured in region: 5 km W Pizzone (IS), on

  • 22-08-2021 04:05:59 (UTC)
  • 22-08-2021 06:05:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.6740, 13.9780 at 10 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
Pizzone IS 5 329 329
Castel San Vincenzo IS 7 516 845
San Biagio Saracinisco FR 8 349 1194
Alfedena AQ 8 864 2058
Montenero Val Cocchiara IS 9 538 2596
Scapoli IS 9 680 3276
Barrea AQ 9 726 4002
Scontrone AQ 10 574 4576
Picinisco FR 10 1218 5794
Settefrati FR 11 728 6522
Rocchetta a Volturno IS 11 1113 7635
Civitella Alfedena AQ 11 296 7931
Cerro al Volturno IS 11 1281 9212
Villetta Barrea AQ 12 653 9865
Villa Latina FR 13 1241 11106
Colli a Volturno IS 13 1349 12455
San Donato Val di Comino FR 14 2107 14562
Rionero Sannitico IS 14 1118 15680
Acquaviva d'Isernia IS 14 425 16105
Vallerotonda FR 15 1581 17686
Acquafondata FR 15 263 17949
Gallinaro FR 15 1269 19218
Fornelli IS 16 1909 21127
Filignano IS 16 648 21775
Atina FR 16 4316 26091
Viticuso FR 17 353 26444
Montaquila IS 17 2456 28900
Castel di Sangro AQ 17 6538 35438
Opi AQ 17 420 35858
Forlì del Sannio IS 17 675 36533
Belmonte Castello FR 17 739 37272
Sant'Elia Fiumerapido FR 18 6166 43438
Pozzilli IS 19 2380 45818
Alvito FR 20 2713 48531
Conca Casale IS 20 200 48731

Municipalities with at least 50000 inhabitants

An earthquake occurred to
73 Km NW of Caserta (76326 inhabitants)
77 Km S of Chieti (51815 inhabitants)
80 Km N of Aversa (53047 inhabitants)
85 Km N of Giugliano in Campania (122974 inhabitants)
87 Km NW of Acerra (59573 inhabitants)
88 Km NW of Afragola (65057 inhabitants)
88 Km N of Marano di Napoli (59874 inhabitants)
89 Km SE of L'Aquila (69753 inhabitants)
89 Km N of Casoria (77642 inhabitants)
90 Km S of Pescara (121014 inhabitants)
90 Km NW of Benevento (60091 inhabitants)
92 Km E of Latina (125985 inhabitants)
92 Km N of Pozzuoli (81661 inhabitants)
95 Km S of Montesilvano (53738 inhabitants)
96 Km N of Napoli (974074 inhabitants)
100 Km E of Velletri (53303 inhabitants)
100 Km NW of Portici (55274 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 1.4 2021-08-22
04:05:59		 41.6743 13.9777 10 2021-08-22
04:18:43		 Sala Sismica INGV-Roma 94484301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-22 04:05:59 ± 0.1
Latitude 41.6743 ± 0.0063
Longitude 13.9777 ± 0.0072
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 94484301

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 713
Semi-minor axis of confidence ellipse (meter) 467
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 196
Circular confidence region, given by single value of horizontal uncertainty (meter) 710.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.57467
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 94484301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-22 04:18:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VOBA.EHZ. 2021-08-22T04:07:27.69 3.0 negative manual Pg 21.48 0
IV.SERS.HHZ. 2021-08-22T04:07:09.47 3.0 undecidable manual Sn -1.36 0
GU.GSCL.HHZ. 2021-08-22T04:06:47.64 3.0 positive manual Pn -3.41 0
IV.MPAG.EHZ. 2021-08-22T04:06:39.66 3.0 undecidable manual Pg 7.91 0
IV.RIBO.EHZ.01 2021-08-22T04:06:39.24 3.0 undecidable manual Pg 5.23 0
IV.MCPD.HHZ. 2021-08-22T04:06:34.64 3.0 positive manual Pn -2.29 0
IV.MIGL.HHZ. 2021-08-22T04:06:23.68 3.0 undecidable manual Pn 1.55 0
IV.T0110.HHZ. 2021-08-22T04:06:20.06 0.3 undecidable manual S 345 63.7917 50 0.98 52
IV.MCRV.HHZ. 2021-08-22T04:06:17.40 3.0 undecidable manual Sn -5.35 0
IV.INTR.HHZ. 2021-08-22T04:06:12.00 0.6 undecidable manual S 351 37.9287 50 -0.17 48
IV.VVLD.HHZ. 2021-08-22T04:06:11.36 0.3 undecidable manual S 307 36.4413 50 -0.43 68
IV.VAGA.HHZ. 2021-08-22T04:06:11.86 0.6 undecidable manual S 143 35.742 50 0.26 47
IV.LRP.EHZ. 2021-08-22T04:06:11.00 0.3 undecidable manual S 265 32.5452 50 0.25 71
IV.T0110.HHZ. 2021-08-22T04:06:10.76 0.3 undecidable manual P 345 63.7917 50 0.05 70
IV.MCI.EHZ. 2021-08-22T04:06:09.07 0.6 undecidable manual S 214 24.4533 111 0.65 43
IX.NSC3.EHZ.02 2021-08-22T04:06:08.11 3.0 undecidable manual Pg 0.13 0
IV.POFI.HHZ. 2021-08-22T04:06:07.79 0.3 undecidable manual S 282 22.5552 113 0.01 76
IV.RNI2.HHZ. 2021-08-22T04:06:06.28 0.3 undecidable manual S 77 14.7741 123 0.86 60
IV.VVLD.HHZ. 2021-08-22T04:06:06.03 0.1 undecidable manual P 307 36.4413 50 -0.47 90
IV.VAGA.HHZ. 2021-08-22T04:06:06.53 0.3 undecidable manual P 143 35.742 50 0.14 72
IV.INTR.HHZ. 2021-08-22T04:06:06.74 0.3 undecidable manual P 351 37.9287 50 0.02 74
IV.MIDA.HNN. 2021-08-22T04:06:06.99 0.3 undecidable manual S 99 23.1546 113 -1 55
IV.LRP.EHZ. 2021-08-22T04:06:05.63 0.3 undecidable manual P 265 32.5452 50 -0.27 71
IT.OPI.HGE. 2021-08-22T04:06:05.93 0.3 undecidable manual S 313 16.6722 120 -0.03 77
IV.POFI.HHZ. 2021-08-22T04:06:04.11 0.1 undecidable manual P 282 22.5552 113 -0.08 100
IV.MCI.EHZ. 2021-08-22T04:06:04.58 0.3 undecidable manual P 214 24.4533 111 0.02 76
IT.OPI.HGE. 2021-08-22T04:06:03.13 0.3 undecidable manual P 313 16.6722 120 -0.01 77
IV.MIDA.HNN. 2021-08-22T04:06:03.80 0.3 undecidable manual P 99 23.1546 113 -0.51 68
IV.RNI2.HHZ. 2021-08-22T04:06:03.19 0.3 undecidable manual P 77 14.7741 123 0.37 72
IV.CERA.HHZ. 2021-08-22T04:06:03.81 0.3 undecidable manual S 158 9.1797 137 -0.08 77
IV.CERA.HHZ. 2021-08-22T04:06:01.96 0.3 undecidable manual P 158 9.1797 137 0.02 78
IV.VBKN.HHZ. 2021-08-22T04:06:01.07 3.0 positive manual P 0.19 0
IV.CRTO.HHZ. 2021-08-22T04:06:00.51 3.0 undecidable manual P -0.38 0
IV.VCRE.HHZ. 2021-08-22T04:06:00.95 3.0 negative manual P -0.06 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERA.HNN. ML:1.6 0.0005669999999999999 1.72 AML other m 2021-08-22T04:06:03.10
IV.CERA.HHN. ML:1.6 0.0006025000000000001 1.72 AML other m 2021-08-22T04:06:03.10
IV.CERA.HNE. ML:1.4 0.000367 1.32 AML other m 2021-08-22T04:06:03.32
IV.CERA.HHE. ML:1.4 0.0003355 1.4 AML other m 2021-08-22T04:06:05.77
IV.RNI2.HHN. ML:1.6 0.00040100000000000004 0.64 AML other m 2021-08-22T04:06:07.58
IV.RNI2.HHE. ML:1.3 0.00019700000000000002 1.5 AML other m 2021-08-22T04:06:07.21
IV.POFI.HHN. ML:1.2 0.0001053 0.48 AML other m 2021-08-22T04:06:08.21
IV.MCI.EHE. ML:1.6 0.0002605 1.32 AML other m 2021-08-22T04:06:09.28
IV.POFI.HHE. ML:1.0 0.00005989999999999999 0.52 AML other m 2021-08-22T04:06:10.08
IV.MCI.EHN. ML:1.3 0.00010850804999999999 1.1808 AML other m 2021-08-22T04:06:09.41
IV.LRP.EHN. ML:0.8 0.0000313 1.02 AML other m 2021-08-22T04:06:11.21
IV.VVLD.HHE. ML:1.2 0.0000655 1.26 AML other m 2021-08-22T04:06:12.27
IV.LRP.EHE. ML:1.3 0.00008675 0.24 AML other m 2021-08-22T04:06:12.33
IV.VAGA.HHE. ML:0.8 0.000026799999999999998 1.12 AML other m 2021-08-22T04:06:12.03
IV.VVLD.HHN. ML:1.2 0.00006325 0.86 AML other m 2021-08-22T04:06:12.16
IV.VAGA.HHN. ML:1.3 0.00007485308 1.0176 AML other m 2021-08-22T04:06:13.10
IV.INTR.HHN. ML:1.3 0.00007772001000000001 0.1792 AML other m 2021-08-22T04:06:13.63
IV.INTR.HHE. ML:1.3 0.000076334075 0.2816 AML other m 2021-08-22T04:06:14.30
IV.POFI.HNE. ML:1.3 0.00012267385 1.3408 AML other m 2021-08-22T04:06:08.71
IV.POFI.HNN. ML:1.4 0.0001757377 4.8096 AML other m 2021-08-22T04:06:10.44
IV.VVLD.HNE. ML:1.5 0.00012692659 1.8272 AML other m 2021-08-22T04:06:13.12
IV.VVLD.HNN. ML:1.4 0.00010844224500000001 4.0384 AML other m 2021-08-22T04:06:13.39
IV.INTR.HNE. ML:1.6 0.00013627055 2.3296 AML other m 2021-08-22T04:06:13.37
IV.INTR.HNN. ML:1.6 0.00013744375 1.2 AML other m 2021-08-22T04:06:13.25
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