Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 21-02-2020 and time 01:15:26 (Italy) in region 1 km S Sant'Agapito (IS)

A magnitude ML 1.5 earthquake occured in region: 1 km S Sant'Agapito (IS), on

  • 21-02-2020 00:15:26 (UTC)
  • 21-02-2020 01:15:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.5320, 14.2270 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
Sant'Agapito IS 1 1496 1496
Longano IS 2 690 2186
Monteroduni IS 4 2264 4450
Castelpizzuto IS 6 155 4605
Macchia d'Isernia IS 6 1035 5640
Isernia IS 6 21842 27482
Pettoranello del Molise IS 6 460 27942
Gallo Matese CE 7 579 28521
Fontegreca CE 9 811 29332
Letino CE 9 712 30044
Capriati a Volturno CE 10 1541 31585
Montaquila IS 10 2456 34041
Pesche IS 10 1661 35702
Castelpetroso IS 10 1680 37382
Carpinone IS 11 1157 38539
Ciorlano CE 11 426 38965
Fornelli IS 11 1909 40874
Roccamandolfi IS 11 938 41812
Prata Sannita CE 11 1502 43314
Valle Agricola CE 12 890 44204
Santa Maria del Molise IS 12 665 44869
Colli a Volturno IS 13 1349 46218
Miranda IS 13 1047 47265
Pozzilli IS 14 2380 49645
Cantalupo nel Sannio IS 14 739 50384
Filignano IS 14 648 51032
Pratella CE 15 1565 52597
Sessano del Molise IS 15 727 53324
Macchiagodena IS 15 1854 55178
Rocchetta a Volturno IS 16 1113 56291
Ailano CE 16 1369 57660
San Massimo CB 16 855 58515
Venafro IS 16 11280 69795
Scapoli IS 17 680 70475
Acquaviva d'Isernia IS 17 425 70900
Cerro al Volturno IS 17 1281 72181
Sesto Campano IS 17 2388 74569
Raviscanina CE 18 1319 75888
Forlì del Sannio IS 19 675 76563
Roccasicura IS 19 550 77113
Conca Casale IS 19 200 77313
Pescolanciano IS 19 855 78168
Sant'Angelo d'Alife CE 19 2270 80438
Castel San Vincenzo IS 19 516 80954

Municipalities with at least 50000 inhabitants

An earthquake occurred to
52 Km N of Caserta (76326 inhabitants)
62 Km N of Aversa (53047 inhabitants)
64 Km NW of Benevento (60091 inhabitants)
66 Km N of Acerra (59573 inhabitants)
67 Km N of Giugliano in Campania (122974 inhabitants)
68 Km N of Afragola (65057 inhabitants)
70 Km N of Casoria (77642 inhabitants)
70 Km N of Marano di Napoli (59874 inhabitants)
77 Km N of Napoli (974074 inhabitants)
77 Km N of Pozzuoli (81661 inhabitants)
79 Km N of Portici (55274 inhabitants)
81 Km N of Ercolano (53709 inhabitants)
84 Km NW of Avellino (54857 inhabitants)
84 Km N of Torre del Greco (86275 inhabitants)
91 Km N of Scafati (50787 inhabitants)
91 Km S of Chieti (51815 inhabitants)
96 Km N of Castellammare di Stabia (66466 inhabitants)
98 Km W of San Severo (53905 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 1.5 2020-02-21
00:15:26		 41.5323 14.2268 11 2020-07-18
21:08:32		 Bollettino Sismico Italiano INGV 78191411
Reviewed
Rev100 		ML 1.6 2020-02-21
00:15:26		 41.5303 14.2288 10 2020-02-21
00:19:08		 Sala Sismica INGV-Roma 76685541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-21 00:15:26 ± 0.11
Latitude 41.5323 ± 0.0063
Longitude 14.2268 ± 0.0108
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 78191411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 939
Semi-minor axis of confidence ellipse (meter) 419
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 57
Circular confidence region, given by single value of horizontal uncertainty (meter) 940.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 77
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.11152
Epicentral distance of station farthest from the epicenter (degree) 0.56298
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 76685541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-21 00:19:08

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 78191411
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-04-17 10:54:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VVLD.HHZ. 2020-02-21T00:15:45.60 0.3 undecidable manual S 307 62.493 50 0.31 65
IV.INTR.HHZ. 2020-02-21T00:15:44.60 0.1 undecidable manual S 333 59.496 50 0.11 69
IV.POFI.HHZ. 2020-02-21T00:15:42.00 0.3 undecidable manual S 296 47.4192 50 0.74 59
IV.BSSO.HHZ. 2020-02-21T00:15:37.60 0.6 undecidable manual S 87 30.5472 50 0.84 39
IV.VVLD.HHZ. 2020-02-21T00:15:36.31 0.1 undecidable manual P 307 62.493 50 -0.84 73
IV.INTR.HHZ. 2020-02-21T00:15:36.00 0.1 undecidable manual P 333 59.496 50 -0.69 78
IV.CERA.HHZ. 2020-02-21T00:15:34.20 0.3 undecidable manual S 293 18.7701 119 0.7 63
IV.POFI.HHZ. 2020-02-21T00:15:34.42 0.1 positive manual P 296 47.4192 50 -0.41 88
IV.SGG.HHZ. 2020-02-21T00:15:34.80 0.6 undecidable manual S 142 20.5683 117 0.77 41
IV.RNI2.HHZ. 2020-02-21T00:15:34.60 0.3 undecidable manual S 342 19.9689 118 0.75 62
IV.PIGN.HHZ. 2020-02-21T00:15:33.04 0.3 undecidable manual P 186 37.0296 50 -0.2 70
IV.TRIV.HHZ. 2020-02-21T00:15:33.47 0.1 undecidable manual P 46 37.3293 50 0.19 94
IV.MCI.EHZ. 2020-02-21T00:15:32.91 0.3 undecidable manual P 263 34.6431 50 0.04 97
IV.BSSO.HHZ. 2020-02-21T00:15:32.41 0.1 undecidable manual P 87 30.5472 50 0.18 95
IV.MIDA.HHZ. 2020-02-21T00:15:31.30 0.1 undecidable manual S 10 12.3765 130 -0.36 71
IV.VAGA.HHZ. 2020-02-21T00:15:31.90 0.3 undecidable manual S 177 12.9759 129 0.07 75
IV.RNI2.HHZ. 2020-02-21T00:15:30.36 0.1 negative manual P 342 19.9689 118 -0.19 97
IV.SGG.HHZ. 2020-02-21T00:15:30.39 0.1 negative manual P 142 20.5683 117 -0.26 95
IV.CERA.HHZ. 2020-02-21T00:15:30.28 0.3 undecidable manual P 293 18.7701 119 -0.06 75
IV.MIDA.HHZ. 2020-02-21T00:15:29.05 0.1 positive manual P 10 12.3765 130 -0.23 97
IV.VAGA.HHZ. 2020-02-21T00:15:29.30 0.1 positive manual P 177 12.9759 129 -0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MIDA.HNE. ML:1.7 0.000502893655 0.1 AML other m 2020-02-21T00:15:31.96
IV.MIDA.HHN. ML:1.6 0.00047974424999999997 0.1 AML other m 2020-02-21T00:15:31.96
IV.MIDA.HHE. ML:1.4 0.00029437305 0.08 AML other m 2020-02-21T00:15:32.83
IV.VAGA.HHE. ML:2.0 0.001100046 0.18 AML other m 2020-02-21T00:15:32.89
IV.VAGA.HNE. ML:2.0 0.00103367935 0.18 AML other m 2020-02-21T00:15:32.89
IV.VAGA.HHN. ML:2.1 0.00130797 0.3 AML other m 2020-02-21T00:15:32.99
IV.VAGA.HNN. ML:2.1 0.0012593259999999998 0.32 AML other m 2020-02-21T00:15:33.00
IV.MIDA.HNN. ML:1.6 0.0004348475 0.24 AML other m 2020-02-21T00:15:33.33
IV.SGG.HNN. ML:1.8 0.00052401155 0.7 AML other m 2020-02-21T00:15:34.61
IV.RNI2.HNE. ML:1.5 0.00022909955 0.24 AML other m 2020-02-21T00:15:34.96
IV.CERA.HNE. ML:1.7 0.0003511254 0.24 AML other m 2020-02-21T00:15:35.70
IV.CERA.HHE. ML:1.7 0.00036656575000000005 0.26 AML other m 2020-02-21T00:15:35.70
IV.SGG.HHE. ML:1.5 0.00022228095000000005 0.18 AML other m 2020-02-21T00:15:36.57
IV.RNI2.HHE. ML:1.5 0.0002352187 0.34 AML other m 2020-02-21T00:15:37.05
IV.CERA.HHN. ML:1.6 0.00031583295 0.48 AML other m 2020-02-21T00:15:37.49
IV.CERA.HNN. ML:1.6 0.00031361255 0.48 AML other m 2020-02-21T00:15:37.50
IV.SGG.HHN. ML:1.6 0.00027856775 0.42 AML other m 2020-02-21T00:15:37.43
IV.SGG.HNE. ML:1.7 0.00037537169999999996 0.34 AML other m 2020-02-21T00:15:38.16
IV.RNI2.HHN. ML:1.4 0.0001761237 0.18 AML other m 2020-02-21T00:15:38.20
IV.RNI2.HNN. ML:1.4 0.00017263030000000003 0.18 AML other m 2020-02-21T00:15:38.20
IV.MCI.EHN. ML:1.4 0.000115619625 0.44 AML other m 2020-02-21T00:15:39.61
IV.MCI.EHE. ML:1.5 0.000126927785 0.38 AML other m 2020-02-21T00:15:39.86
IV.PIGN.HHE. ML:1.0 0.000039890975 0.18 AML other m 2020-02-21T00:15:40.18
IV.POFI.HHN. ML:1.0 0.000026255340000000002 0.6 AML other m 2020-02-21T00:15:42.51
IV.POFI.HHE. ML:1.0 0.000023387434999999998 0.5 AML other m 2020-02-21T00:15:42.55
IV.PIGN.HHN. ML:0.9 0.00003243579 0.28 AML other m 2020-02-21T00:15:44.16
IV.INTR.HHE. ML:1.4 0.000051903095 0.58 AML other m 2020-02-21T00:15:45.25
IV.VVLD.HHE. ML:1.3 0.00003635639 0.72 AML other m 2020-02-21T00:15:45.84
IV.VVLD.HHN. ML:1.2 0.00003139601 0.46 AML other m 2020-02-21T00:15:47.33
IV.INTR.HNN. ML:1.9 0.0001766108 0.71 AML other m 2020-02-21T00:15:49.57
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