Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 22-12-2020 and time 06:33:04 (UTC) in region 3 km S Scapoli (IS)

A magnitude ML 1.1 earthquake occured in region: 3 km S Scapoli (IS), on

  • 22-12-2020 06:33:04 (UTC)
  • 22-12-2020 07:33:04 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.5890, 14.0660 at 10 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 3 680 680
Colli a Volturno IS 3 1349 2029
Rocchetta a Volturno IS 4 1113 3142
Filignano IS 5 648 3790
Montaquila IS 5 2456 6246
Fornelli IS 7 1909 8155
Castel San Vincenzo IS 8 516 8671
Cerro al Volturno IS 8 1281 9952
Pozzilli IS 9 2380 12332
Macchia d'Isernia IS 9 1035 13367
Pizzone IS 9 329 13696
Acquafondata FR 11 263 13959
Viticuso FR 11 353 14312
Venafro IS 11 11280 25592
Conca Casale IS 12 200 25792
Acquaviva d'Isernia IS 12 425 26217
Monteroduni IS 12 2264 28481
San Biagio Saracinisco FR 12 349 28830
Vallerotonda FR 13 1581 30411
Isernia IS 13 21842 52253
Sant'Agapito IS 14 1496 53749
Montenero Val Cocchiara IS 14 538 54287
Capriati a Volturno CE 15 1541 55828
Rionero Sannitico IS 15 1118 56946
Forlì del Sannio IS 15 675 57621
Miranda IS 16 1047 58668
Alfedena AQ 17 864 59532
Longano IS 17 690 60222
Ciorlano CE 17 426 60648
Sant'Elia Fiumerapido FR 18 6166 66814
San Vittore del Lazio FR 18 2636 69450
Fontegreca CE 18 811 70261
Pettoranello del Molise IS 18 460 70721
Scontrone AQ 18 574 71295
Picinisco FR 18 1218 72513
Cervaro FR 18 8109 80622
San Pietro Infine CE 18 944 81566
Pesche IS 18 1661 83227
Roccasicura IS 19 550 83777
Sesto Campano IS 19 2388 86165
Gallo Matese CE 19 579 86744
Villa Latina FR 19 1241 87985
Barrea AQ 20 726 88711

Municipalities with at least 50000 inhabitants

An earthquake occurred to
61 Km NW of Caserta (76326 inhabitants)
69 Km N of Aversa (53047 inhabitants)
74 Km N of Giugliano in Campania (122974 inhabitants)
76 Km NW of Acerra (59573 inhabitants)
77 Km N of Afragola (65057 inhabitants)
77 Km N of Marano di Napoli (59874 inhabitants)
78 Km N of Casoria (77642 inhabitants)
79 Km NW of Benevento (60091 inhabitants)
82 Km N of Pozzuoli (81661 inhabitants)
85 Km N of Napoli (974074 inhabitants)
85 Km S of Chieti (51815 inhabitants)
88 Km N of Portici (55274 inhabitants)
90 Km N of Ercolano (53709 inhabitants)
93 Km N of Torre del Greco (86275 inhabitants)
97 Km NW of Avellino (54857 inhabitants)
98 Km E of Latina (125985 inhabitants)
98 Km S of Pescara (121014 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 1.1 2020-12-22
06:33:04		 41.5888 14.0662 10 2021-02-26
14:56:19		 Bollettino Sismico Italiano INGV 87209041
Reviewed
Rev100 		ML 1.1 2020-12-22
06:33:04		 41.602 14.066 11 2020-12-22
06:37:24		 Sala Sismica INGV-Roma 85622101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-22 06:33:04 ± 0.1
Latitude 41.5888 ± 0.0063
Longitude 14.0662 ± 0.0084
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87209041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 700
Semi-minor axis of confidence ellipse (meter) 673
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 32
Circular confidence region, given by single value of horizontal uncertainty (meter) 700.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.03687
Epicentral distance of station farthest from the epicenter (degree) 0.43887
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 16
Type of magnitude ML
Reference to an origin 87209041
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-16 11:45:15

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 16
Type of magnitude ML
Reference to an origin 85622101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-22 06:37:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.INTR.HHZ. 2020-12-22T06:33:20.46 0.6 undecidable manual S 344 48.7179 50 0.38 43
IT.OPI.HGZ. 2020-12-22T06:33:14.30 0.6 undecidable manual S 317 28.5492 50 -0.39 45
IV.VAGA.HHZ. 2020-12-22T06:33:13.67 0.6 undecidable manual S 144 23.754 50 0.25 46
IV.MCI.EHZ. 2020-12-22T06:33:13.76 0.6 undecidable manual S 243 23.6541 50 0.37 45
IV.INTR.HHZ. 2020-12-22T06:33:13.42 0.3 undecidable manual P 344 48.7179 50 -0.06 69
IV.RNI2.HHZ. 2020-12-22T06:33:11.25 0.6 undecidable manual S 29 14.5743 125 0.58 43
IV.MIDA.HHZ. 2020-12-22T06:33:10.69 0.6 undecidable manual S 69 16.6722 122 -0.58 43
IV.MCI.EHZ. 2020-12-22T06:33:09.35 0.6 undecidable manual P 243 23.6541 50 -0.27 46
IV.VAGA.HHZ. 2020-12-22T06:33:09.62 0.3 undecidable manual P 144 23.754 50 -0.02 73
IT.OPI.HGZ. 2020-12-22T06:33:09.94 0.6 undecidable manual P 317 28.5492 50 -0.43 44
IV.CERA.HHZ. 2020-12-22T06:33:08.29 0.3 undecidable manual S 284 4.0959 159 -0.04 75
IV.RNI2.HHZ. 2020-12-22T06:33:08.23 0.1 positive manual P 29 14.5743 125 0.19 95
IV.MIDA.HHZ. 2020-12-22T06:33:08.25 0.3 undecidable manual P 69 16.6722 122 -0.14 72
IV.CERA.HHZ. 2020-12-22T06:33:06.74 0.1 undecidable manual P 284 4.0959 159 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERA.HHN. ML:1.3 0.00033350000000000003 1.06 AML other m 2020-12-22T06:33:08.72
IV.CERA.HNN. ML:1.3 0.0003025 1.06 AML other m 2020-12-22T06:33:08.72
IV.CERA.HHE. ML:1.1 0.000226 1.58 AML other m 2020-12-22T06:33:11.08
IV.CERA.HNE. ML:1.1 0.0002145 1.58 AML other m 2020-12-22T06:33:11.08
IV.RNI2.HNE. ML:1.3 0.0001785 0.96 AML other m 2020-12-22T06:33:12.07
IV.MIDA.HHN. ML:1.1 0.0001032 0.24 AML other m 2020-12-22T06:33:12.38
IV.RNI2.HHE. ML:1.2 0.00016450000000000001 0.64 AML other m 2020-12-22T06:33:12.44
IV.RNI2.HHN. ML:1.2 0.000144 1.38 AML other m 2020-12-22T06:33:13.24
IV.RNI2.HNN. ML:1.2 0.00014500000000000003 1.36 AML other m 2020-12-22T06:33:13.25
IV.MIDA.HHE. ML:0.8 0.00006155 1.36 AML other m 2020-12-22T06:33:13.71
IV.VAGA.HNE. ML:0.9 0.0000496072 0.2816 AML other m 2020-12-22T06:33:15.42
IV.VAGA.HHE. ML:0.9 0.00005069999999999999 1.42 AML other m 2020-12-22T06:33:15.77
IV.VAGA.HNN. ML:1.1 0.000070571935 0.2208 AML other m 2020-12-22T06:33:16.40
IV.VAGA.HHN. ML:1.0 0.00006555 0.22 AML other m 2020-12-22T06:33:16.40
IV.INTR.HHN. ML:1.2 0.00004355 0.4 AML other m 2020-12-22T06:33:21.83
IV.INTR.HHE. ML:1.0 0.0000276 1.58 AML other m 2020-12-22T06:33:22.11
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