Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 23-08-2019 and time 20:22:50 (Italy) in region 1 km SE Acquaviva d'Isernia (IS)

A magnitude ML 1.0 earthquake occured in region: 1 km SE Acquaviva d'Isernia (IS), on

  • 23-08-2019 18:22:50 (UTC)
  • 23-08-2019 20:22:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.6680, 14.1600 at 9 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
Acquaviva d'Isernia IS 1 425 425
Forlì del Sannio IS 4 675 1100
Cerro al Volturno IS 5 1281 2381
Rionero Sannitico IS 5 1118 3499
Roccasicura IS 7 550 4049
Fornelli IS 7 1909 5958
Rocchetta a Volturno IS 8 1113 7071
Miranda IS 8 1047 8118
Castel San Vincenzo IS 8 516 8634
Colli a Volturno IS 9 1349 9983
Montenero Val Cocchiara IS 9 538 10521
Scapoli IS 10 680 11201
Pizzone IS 10 329 11530
Isernia IS 10 21842 33372
Macchia d'Isernia IS 12 1035 34407
Montaquila IS 12 2456 36863
Pesche IS 12 1661 38524
Carovilli IS 12 1359 39883
Alfedena AQ 13 864 40747
Scontrone AQ 13 574 41321
San Pietro Avellana IS 14 503 41824
Castel di Sangro AQ 14 6538 48362
Pettoranello del Molise IS 14 460 48822
Vastogirardi IS 15 704 49526
Sant'Agapito IS 15 1496 51022
Sessano del Molise IS 15 727 51749
Pescolanciano IS 15 855 52604
Filignano IS 16 648 53252
Carpinone IS 16 1157 54409
Monteroduni IS 16 2264 56673
Barrea AQ 17 726 57399
Longano IS 18 690 58089
Chiauci IS 19 233 58322
Pozzilli IS 19 2380 60702
Castelpetroso IS 20 1680 62382
Castelpizzuto IS 20 155 62537

Municipalities with at least 50000 inhabitants

An earthquake occurred to
68 Km N of Caserta (76326 inhabitants)
76 Km S of Chieti (51815 inhabitants)
77 Km N of Aversa (53047 inhabitants)
79 Km NW of Benevento (60091 inhabitants)
82 Km N of Acerra (59573 inhabitants)
82 Km N of Giugliano in Campania (122974 inhabitants)
84 Km N of Afragola (65057 inhabitants)
85 Km N of Casoria (77642 inhabitants)
86 Km N of Marano di Napoli (59874 inhabitants)
89 Km S of Pescara (121014 inhabitants)
91 Km N of Pozzuoli (81661 inhabitants)
92 Km N of Napoli (974074 inhabitants)
94 Km S of Montesilvano (53738 inhabitants)
95 Km N of Portici (55274 inhabitants)
97 Km N of Ercolano (53709 inhabitants)
99 Km SE of L'Aquila (69753 inhabitants)
99 Km NW of Avellino (54857 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
Bulletin
Rev1000 		ML 1.0 2019-08-23
18:22:50		 41.6685 14.1597 9 2019-11-13
14:30:59		 Bollettino Sismico Italiano INGV 71902051
Reviewed
Rev100 		ML 1.5 2019-08-23
18:22:50		 41.671 14.1702 10 2019-08-24
04:48:38		 Sala Sismica INGV-Roma 71756301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-23 18:22:50 ± 0.04
Latitude 41.6685 ± 0.0027
Longitude 14.1597 ± 0.0036
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 71902051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 338
Semi-minor axis of confidence ellipse (meter) 279
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 188
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.45056
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 71902051
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-08-29 08:24:38

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 71756301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-24 04:48:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
TV.SU26.HHZ. 2019-08-23T18:24:16.31 3.0 undecidable manual Pg 27.77 0
GU.GSCL.HHZ. 2019-08-23T18:24:08.56 3.0 undecidable manual Sn -5.55 0
IV.CET2.HHZ. 2019-08-23T18:24:08.53 3.0 undecidable manual Sg 20.639999 0
IV.EUCT.HNZ. 2019-08-23T18:24:00.47 3.0 negative manual Pg 13.82 0
IV.HAGA.HHZ. 2019-08-23T18:23:58.42 3.0 undecidable manual Pg 18.68 0
IV.PIPA.HHZ. 2019-08-23T18:23:57.41 3.0 undecidable manual Sn 0.69 0
GU.RNCA.HHZ. 2019-08-23T18:23:55.33 3.0 undecidable manual Pg 12.98 0
IV.SARZ.HHZ. 2019-08-23T18:23:49.03 3.0 positive manual Pn 3.45 0
CR.STON.BHZ. 2019-08-23T18:23:47.64 3.0 undecidable manual Sn -2.4 0
IV.PE3.EHZ. 2019-08-23T18:23:44.90 3.0 undecidable manual Sg 2.71 0
GU.GRAM.HHZ. 2019-08-23T18:23:39.83 3.0 negative manual Pn 5.95 0
IV.ARRO.EHZ. 2019-08-23T18:23:23.70 3.0 undecidable manual Sg -0.34 0
IV.PE3.EHZ. 2019-08-23T18:23:10.03 3.0 negative manual Pn -0.98 0
IV.MCRV.HHZ. 2019-08-23T18:23:07.93 3.0 undecidable manual Pg 9.12 0
IV.VVLD.HHZ. 2019-08-23T18:23:06.38 0.3 undecidable manual S 297 49.7169 50 -0.23 66
IV.LRP.EHN. 2019-08-23T18:23:06.06 0.6 undecidable manual S 267 47.5191 50 0.01 46
IT.SULP.HGN. 2019-08-23T18:23:06.91 1.0 undecidable manual S 338 50.0166 50 0.2 45
IV.LPEL.HHE. 2019-08-23T18:23:04.57 0.3 undecidable manual S 3 42.0246 50 0 71
IV.SGG.HHN. 2019-08-23T18:23:03.23 0.6 undecidable manual S 150 36.2415 50 0.21 46
IV.POFI.HHE. 2019-08-23T18:23:03.23 0.3 undecidable manual S 278 37.4292 50 -0.13 69
IV.TRIV.HHN. 2019-08-23T18:23:02.80 1.0 undecidable manual S 71 34.1436 50 0.33 22
IV.VAGA.HHZ. 2019-08-23T18:23:00.98 1.0 undecidable manual S 168 28.749 107 0.17 23
IV.VVLD.HHZ. 2019-08-23T18:23:00.00 0.6 undecidable manual P 297 49.7169 50 0.24 44
IT.SULP.HGN. 2019-08-23T18:23:00.12 1.0 undecidable manual P 338 50.0166 50 0.31 22
IV.LRP.EHN. 2019-08-23T18:22:59.46 0.6 undecidable manual P 267 47.5191 50 0.03 46
IV.LPEL.HHE. 2019-08-23T18:22:58.79 1.0 undecidable manual P 3 42.0246 50 0.22 45
IV.TRIV.HHN. 2019-08-23T18:22:57.40 0.1 undecidable manual P 71 34.1436 50 0.04 95
IV.SGG.HHN. 2019-08-23T18:22:57.92 0.3 undecidable manual P 150 36.2415 50 0.24 68
IV.POFI.HHE. 2019-08-23T18:22:57.54 0.1 undecidable manual P 278 37.4292 50 -0.34 88
IV.BSSO.HHE. 2019-08-23T18:22:57.65 0.6 undecidable manual P 111 38.5281 50 -0.38 44
IT.CSO1.HGZ. 2019-08-23T18:22:56.44 3.0 undecidable manual P -0.56 0
IV.CERA.HHZ. 2019-08-23T18:22:56.43 0.3 undecidable manual S 236 14.0748 122 0.29 70
IV.VAGA.HHZ. 2019-08-23T18:22:56.30 0.1 undecidable manual P 168 28.749 107 -0.11 94
IV.MIDA.HHZ. 2019-08-23T18:22:54.31 0.3 undecidable manual S 111 8.3805 136 -0.27 71
IV.RNI2.HHZ. 2019-08-23T18:22:53.79 0.3 undecidable manual S 351 3.8961 156 0.08 74
IV.CERA.HHZ. 2019-08-23T18:22:53.71 0.1 positive manual P 236 14.0748 122 0 99
IV.RNI2.HHZ. 2019-08-23T18:22:52.33 0.1 negative manual P 351 3.8961 156 0.03 100
IV.MIDA.HHZ. 2019-08-23T18:22:52.76 0.1 positive manual P 111 8.3805 136 -0.05 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERA.HHN. ML:0.7 0.00004815 0.46 AML other m 2019-08-23T18:23:04.42
IV.RNI2.HHN. ML:1.9 0.0012999999999999997 0.92 AML other m 2019-08-23T18:22:54.24
IV.MIDA.HHN. ML:1.4 0.0003465 1.34 AML other m 2019-08-23T18:22:54.89
IV.MIDA.HHE. ML:1.4 0.0003665 0.4 AML other m 2019-08-23T18:22:55.68
IV.RNI2.HNE. ML:1.7 0.0008035 1.14 AML other m 2019-08-23T18:22:55.62
IV.RNI2.HHE. ML:1.7 0.0008734999999999999 1.16 AML other m 2019-08-23T18:22:55.62
IV.CERA.HHE. ML:0.7 0.000052900000000000005 0.44 AML other m 2019-08-23T18:22:58.93
IV.MIDA.HNN. ML:1.3 0.00031280474999999995 0.2816 AML other m 2019-08-23T18:22:55.67
IV.MIDA.HNE. ML:1.3 0.00031496935 0.1536 AML other m 2019-08-23T18:22:54.89
IV.CERA.HNN. ML:0.6 0.00004278165000000001 0.3712 AML other m 2019-08-23T18:23:00.88
IV.CERA.HNE. ML:0.7 0.00005406152 0.576 AML other m 2019-08-23T18:22:58.92
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
Waveforms Seismic signals in miniseed + resp format not available