Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 04-02-2021 and time 21:03:34 (Italy) in region 1 km SE Pizzone (IS)

A magnitude ML 1.0 earthquake occured in region: 1 km SE Pizzone (IS), on

  • 04-02-2021 20:03:34 (UTC)
  • 04-02-2021 21:03:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.6560, 14.0430 at 9 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 1 329 329
Castel San Vincenzo IS 2 516 845
Scapoli IS 5 680 1525
Rocchetta a Volturno IS 5 1113 2638
Cerro al Volturno IS 5 1281 3919
Montenero Val Cocchiara IS 7 538 4457
Colli a Volturno IS 8 1349 5806
Alfedena AQ 9 864 6670
Acquaviva d'Isernia IS 9 425 7095
Fornelli IS 10 1909 9004
Scontrone AQ 10 574 9578
Rionero Sannitico IS 10 1118 10696
San Biagio Saracinisco FR 11 349 11045
Montaquila IS 12 2456 13501
Filignano IS 12 648 14149
Barrea AQ 12 726 14875
Forlì del Sannio IS 12 675 15550
Acquafondata FR 15 263 15813
Picinisco FR 15 1218 17031
Macchia d'Isernia IS 15 1035 18066
Civitella Alfedena AQ 15 296 18362
Castel di Sangro AQ 16 6538 24900
Vallerotonda FR 16 1581 26481
Viticuso FR 16 353 26834
Settefrati FR 16 728 27562
Pozzilli IS 16 2380 29942
Roccasicura IS 17 550 30492
Villetta Barrea AQ 17 653 31145
Miranda IS 17 1047 32192
Isernia IS 17 21842 54034
Villa Latina FR 18 1241 55275
Conca Casale IS 18 200 55475
Monteroduni IS 18 2264 57739
Venafro IS 19 11280 69019
San Pietro Avellana IS 19 503 69522
Sant'Agapito IS 19 1496 71018
Sant'Elia Fiumerapido FR 20 6166 77184
San Donato Val di Comino FR 20 2107 79291

Municipalities with at least 50000 inhabitants

An earthquake occurred to
69 Km NW of Caserta (76326 inhabitants)
77 Km N of Aversa (53047 inhabitants)
78 Km S of Chieti (51815 inhabitants)
82 Km N of Giugliano in Campania (122974 inhabitants)
84 Km NW of Acerra (59573 inhabitants)
85 Km N of Afragola (65057 inhabitants)
85 Km NW of Benevento (60091 inhabitants)
85 Km N of Marano di Napoli (59874 inhabitants)
86 Km N of Casoria (77642 inhabitants)
90 Km N of Pozzuoli (81661 inhabitants)
91 Km S of Pescara (121014 inhabitants)
92 Km N of Napoli (974074 inhabitants)
94 Km SE of L'Aquila (69753 inhabitants)
96 Km S of Montesilvano (53738 inhabitants)
96 Km N of Portici (55274 inhabitants)
97 Km E of Latina (125985 inhabitants)
97 Km N of Ercolano (53709 inhabitants)
100 Km N of Torre del Greco (86275 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 1.0 2021-02-04
20:03:34		 41.6557 14.0427 9 2021-02-04
20:19:56		 Sala Sismica INGV-Roma 86836381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-04 20:03:34 ± 0.11
Latitude 41.6557 ± 0.0072
Longitude 14.0427 ± 0.0072
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86836381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 822
Semi-minor axis of confidence ellipse (meter) 544
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 187
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) 86
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37861
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 86836381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-04 20:19:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MTMR.EHZ. 2021-02-04T20:04:08.29 3.0 undecidable manual S -0.04 0
IV.MTMR.EHZ. 2021-02-04T20:03:55.44 3.0 negative manual P 2.4 0
IV.VVLD.HHZ. 2021-02-04T20:03:48.07 0.3 undecidable manual S 305 42.0246 50 -0.1 70
IV.INTR.HNZ. 2021-02-04T20:03:48.27 0.3 undecidable manual S 344 41.1255 50 0.35 67
IV.VAGA.HHN. 2021-02-04T20:03:45.77 0.6 undecidable manual S 149 31.0467 50 0.54 43
IV.POFI.HNZ. 2021-02-04T20:03:44.56 0.3 undecidable manual S 284 28.2495 108 0.17 71
IV.VVLD.HHZ. 2021-02-04T20:03:41.68 0.3 undecidable manual P 305 42.0246 50 -0.54 63
IV.INTR.HNZ. 2021-02-04T20:03:41.93 0.3 undecidable manual P 344 41.1255 50 -0.14 70
IV.MIDA.HHZ. 2021-02-04T20:03:40.44 0.3 undecidable manual S 95 17.5713 118 -0.55 66
IV.VAGA.HHN. 2021-02-04T20:03:40.67 0.3 undecidable manual P 149 31.0467 50 0.15 71
IV.POFI.HNZ. 2021-02-04T20:03:39.86 0.3 undecidable manual P 284 28.2495 108 -0.18 71
IV.RNI2.HHZ. 2021-02-04T20:03:39.55 0.3 undecidable manual S 60 10.4784 131 0.6 66
IV.CERA.HHZ. 2021-02-04T20:03:38.12 0.3 undecidable manual S 198 6.6933 144 0.06 75
IV.RNI2.HHZ. 2021-02-04T20:03:37.02 0.1 undecidable manual P 60 10.4784 131 0.13 98
IV.MIDA.HHZ. 2021-02-04T20:03:37.69 0.1 undecidable manual P 95 17.5713 118 -0.38 92
IV.CERA.HHZ. 2021-02-04T20:03:36.45 0.1 undecidable manual P 198 6.6933 144 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RNI2.HHN. ML:1.2 0.00022899999999999998 0.2 AML other m 2021-02-04T20:03:40.16
IV.RNI2.HNN. ML:1.2 0.00022999999999999998 0.2 AML other m 2021-02-04T20:03:40.16
IV.CERA.HHN. ML:0.4 0.00004684552 0.5376 AML other m 2021-02-04T20:03:38.65
IV.CERA.HHE. ML:0.7 0.00008558722499999999 0.8576 AML other m 2021-02-04T20:03:38.69
IV.RNI2.HNE. ML:1.4 0.00033350000000000003 0.42 AML other m 2021-02-04T20:03:41.24
IV.RNI2.HHE. ML:1.4 0.0003325 0.44 AML other m 2021-02-04T20:03:41.24
IV.MIDA.HHE. ML:0.8 0.0000616 0.56 AML other m 2021-02-04T20:03:41.59
IV.MIDA.HHN. ML:1.1 0.0001004 0.24 AML other m 2021-02-04T20:03:41.68
IV.CERA.HNE. ML:0.7 0.00008968933 0.8832 AML other m 2021-02-04T20:03:38.69
IV.CERA.HNN. ML:0.6 0.000066031335 1.7536 AML other m 2021-02-04T20:03:39.26
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