Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 30-04-2021 and time 02:45:31 (UTC) in region 4 km W Scapoli (IS)

A magnitude ML 0.7 earthquake occured in region: 4 km W Scapoli (IS), on

  • 30-04-2021 02:45:31 (UTC)
  • 30-04-2021 04:45:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.6210, 14.0100 at 16 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
Scapoli IS 4 680 680
Pizzone IS 6 329 1009
Castel San Vincenzo IS 6 516 1525
Rocchetta a Volturno IS 6 1113 2638
San Biagio Saracinisco FR 7 349 2987
Colli a Volturno IS 8 1349 4336
Cerro al Volturno IS 9 1281 5617
Filignano IS 9 648 6265
Acquafondata FR 10 263 6528
Montaquila IS 11 2456 8984
Vallerotonda FR 11 1581 10565
Fornelli IS 11 1909 12474
Viticuso FR 11 353 12827
Montenero Val Cocchiara IS 12 538 13365
Picinisco FR 12 1218 14583
Pozzilli IS 13 2380 16963
Alfedena AQ 13 864 17827
Acquaviva d'Isernia IS 13 425 18252
Conca Casale IS 14 200 18452
Villa Latina FR 14 1241 19693
Scontrone AQ 14 574 20267
Settefrati FR 14 728 20995
Macchia d'Isernia IS 15 1035 22030
Rionero Sannitico IS 15 1118 23148
Sant'Elia Fiumerapido FR 15 6166 29314
Venafro IS 15 11280 40594
Barrea AQ 15 726 41320
Forlì del Sannio IS 17 675 41995
Belmonte Castello FR 17 739 42734
Civitella Alfedena AQ 17 296 43030
Atina FR 17 4316 47346
Monteroduni IS 18 2264 49610
Cervaro FR 18 8109 57719
Gallinaro FR 18 1269 58988
Isernia IS 18 21842 80830
San Vittore del Lazio FR 18 2636 83466
Villetta Barrea AQ 19 653 84119
San Donato Val di Comino FR 19 2107 86226
Sant'Agapito IS 20 1496 87722
San Pietro Infine CE 20 944 88666
Miranda IS 20 1047 89713

Municipalities with at least 50000 inhabitants

An earthquake occurred to
66 Km NW of Caserta (76326 inhabitants)
74 Km N of Aversa (53047 inhabitants)
79 Km N of Giugliano in Campania (122974 inhabitants)
81 Km NW of Acerra (59573 inhabitants)
82 Km NW of Afragola (65057 inhabitants)
82 Km N of Marano di Napoli (59874 inhabitants)
82 Km S of Chieti (51815 inhabitants)
83 Km N of Casoria (77642 inhabitants)
84 Km NW of Benevento (60091 inhabitants)
86 Km N of Pozzuoli (81661 inhabitants)
89 Km N of Napoli (974074 inhabitants)
93 Km NW of Portici (55274 inhabitants)
94 Km E of Latina (125985 inhabitants)
94 Km NW of Ercolano (53709 inhabitants)
95 Km S of Pescara (121014 inhabitants)
96 Km SE of L'Aquila (69753 inhabitants)
97 Km NW of Torre del Greco (86275 inhabitants)
100 Km S of Montesilvano (53738 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 0.7 2021-04-30
02:45:31		 41.6208 14.0103 16 2021-07-12
16:55:10		 Bollettino Sismico Italiano INGV 89965321
Reviewed
Rev100 		ML 0.6 2021-04-30
02:45:31		 41.6122 14.0242 13 2021-04-30
03:03:04		 Sala Sismica INGV-Roma 89617211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-30 02:45:31 ± 0.24
Latitude 41.6208 ± 0.0099
Longitude 14.0103 ± 0.0084
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89965321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 819
Semi-minor axis of confidence ellipse (meter) 805
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 197
Circular confidence region, given by single value of horizontal uncertainty (meter) 820.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 129
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.39840
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 89965321
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-30 09:25:14

ML:0.6

Field Value
Value 0.6
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 89617211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-30 03:03:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IX.STN3.HNZ.01 2021-04-30T02:45:53.76 3.0 negative manual P -7.48 0
IV.INTR.HHE. 2021-04-30T02:45:45.37 0.6 undecidable manual S 349 44.2224 100 -0.09 46
IV.MTCE.HHZ. 2021-04-30T02:45:45.38 3.0 undecidable manual P -5.34 0
IV.VVLD.HHZ. 2021-04-30T02:45:44.59 0.6 undecidable manual S 311 42.3243 100 -0.36 43
IV.POFI.HNZ. 2021-04-30T02:45:41.34 0.3 undecidable manual S 294 26.9508 109 0.37 69
IV.MIDA.HHZ. 2021-04-30T02:45:39.28 0.3 undecidable manual S 83 20.3685 118 -0.07 72
IV.INTR.HHE. 2021-04-30T02:45:39.13 0.3 undecidable manual P 349 44.2224 100 -0.25 66
IV.RNI2.HHZ. 2021-04-30T02:45:38.30 0.6 undecidable manual S 52 14.874 129 0.16 48
IV.VVLD.HHZ. 2021-04-30T02:45:38.92 0.3 undecidable manual P 311 42.3243 100 -0.17 67
IV.POFI.HNZ. 2021-04-30T02:45:37.11 0.6 undecidable manual P 294 26.9508 109 0.32 46
IV.CERA.HHZ. 2021-04-30T02:45:36.10 0.3 undecidable manual S 165 2.5974 169 -0.29 71
IV.RNI2.HHZ. 2021-04-30T02:45:35.40 0.3 undecidable manual P 52 14.874 129 0.25 72
IV.MIDA.HHZ. 2021-04-30T02:45:35.87 0.3 undecidable manual P 83 20.3685 118 0.01 73
IV.CERA.HHZ. 2021-04-30T02:45:34.28 0.1 positive manual P 165 2.5974 169 0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERA.HNN. ML:0.9 0.000082208455 0.1792 AML other m 2021-04-30T02:45:36.24
IV.CERA.HHE. ML:0.7 0.000049000000000000005 0.2 AML other m 2021-04-30T02:45:36.24
IV.CERA.HHN. ML:1.0 0.00009779999999999999 0.76 AML other m 2021-04-30T02:45:36.24
IV.CERA.HNE. ML:0.6 0.00004088259000000001 0.1392 AML other m 2021-04-30T02:45:36.27
IV.RNI2.HHN. ML:0.7 0.000038150000000000006 1.18 AML other m 2021-04-30T02:45:39.34
IV.RNI2.HNN. ML:0.6 0.00003199197 0.2 AML other m 2021-04-30T02:45:39.34
IV.MIDA.HHE. ML:0.6 0.00002465 1.1 AML other m 2021-04-30T02:45:39.91
IV.MIDA.HHN. ML:0.7 0.000029449999999999998 0.42 AML other m 2021-04-30T02:45:39.42
IV.RNI2.HNE. ML:0.7 0.00004207316499999999 0.36 AML other m 2021-04-30T02:45:39.82
IV.RNI2.HHE. ML:0.8 0.000045799999999999995 0.16 AML other m 2021-04-30T02:45:39.81
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