Earthquake with magnitude of ML 1.9 on date 22-08-2019 and time 20:10:20 (Italy) in region 2 km E Acquaviva d'Isernia (IS)

A magnitude ML 1.9 earthquake occured in region: 2 km E Acquaviva d'Isernia (IS), on

  • 22-08-2019 18:10:20 (UTC)
  • 22-08-2019 20:10:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.68, 14.17 at 10 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.

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 2 425 425
Forlì del Sannio IS 3 675 1100
Rionero Sannitico IS 5 1118 2218
Roccasicura IS 6 550 2768
Cerro al Volturno IS 6 1281 4049
Miranda IS 7 1047 5096
Fornelli IS 8 1909 7005
Rocchetta a Volturno IS 9 1113 8118
Castel San Vincenzo IS 9 516 8634
Montenero Val Cocchiara IS 10 538 9172
Colli a Volturno IS 10 1349 10521
Isernia IS 11 21842 32363
Carovilli IS 11 1359 33722
Pizzone IS 11 329 34051
Pesche IS 11 1661 35712
Scapoli IS 12 680 36392
Macchia d'Isernia IS 12 1035 37427
Montaquila IS 13 2456 39883
San Pietro Avellana IS 13 503 40386
Alfedena AQ 13 864 41250
Vastogirardi IS 13 704 41954
Castel di Sangro AQ 14 6538 48492
Pescolanciano IS 14 855 49347
Scontrone AQ 14 574 49921
Sessano del Molise IS 14 727 50648
Pettoranello del Molise IS 14 460 51108
Sant'Agapito IS 15 1496 52604
Carpinone IS 16 1157 53761
Monteroduni IS 17 2264 56025
Filignano IS 17 648 56673
Chiauci IS 18 233 56906
Barrea AQ 18 726 57632
Longano IS 18 690 58322
Castelpetroso IS 19 1680 60002
Civitanova del Sannio IS 19 945 60947
Capracotta IS 19 903 61850
Castelpizzuto IS 20 155 62005
Pietrabbondante IS 20 759 62764

Municipalities with at least 50000 inhabitants

An earthquake occurred to
68 Km N of Caserta (76326 inhabitants)
75 Km S of Chieti (51815 inhabitants)
78 Km N of Aversa (53047 inhabitants)
79 Km NW of Benevento (60091 inhabitants)
83 Km N of Acerra (59573 inhabitants)
83 Km N of Giugliano in Campania (122974 inhabitants)
84 Km N of Afragola (65057 inhabitants)
86 Km N of Casoria (77642 inhabitants)
86 Km N of Marano di Napoli (59874 inhabitants)
88 Km S of Pescara (121014 inhabitants)
92 Km N of Pozzuoli (81661 inhabitants)
93 Km N of Napoli (974074 inhabitants)
94 Km S of Montesilvano (53738 inhabitants)
96 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
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire *

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.9 2019-08-22
18:10:20
41.67 14.17 10 2019-08-22
18:20:27
Sala Sismica INGV-Roma 71712511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-22 18:10:20 ± 0.13
Latitude 41.67 ± 0.01
Longitude 14.17 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71712511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1374
Semi-minor axis of confidence ellipse (meter) 791
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 180
Circular confidence region, given by single value of horizontal uncertainty (meter) 1370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.45416
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.4
Num. used stations 13
Type of magnitude ML
Reference to an origin 71712511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-22 18:20:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MCT.HHZ. 2019-08-22T18:11:05.70 3.0 undecidable manual Pn -4.55 0
IV.GMB.BHZ. 2019-08-22T18:11:01.40 3.0 negative manual Pn -9.99 0
IV.TERO.HHZ. 2019-08-22T18:10:58.49 3.0 undecidable manual Sg 5.7 0
IV.LPEL.HHZ. 2019-08-22T18:10:57.70 3.0 undecidable manual Sn -9.99 0
IV.VVLD.HHZ. 2019-08-22T18:10:37.07 0.1 undecidable manual S 296 0.4542 50 0.09 91
IV.ARRO.EHZ. 2019-08-22T18:10:36.23 3.0 undecidable manual Sn -9.99 0
TV.SF04.EHZ. 2019-08-22T18:10:35.64 3.0 undecidable manual Sg 1.06 0
IV.VVLD.HHZ. 2019-08-22T18:10:29.96 0.1 undecidable manual P 296 0.4542 50 -0.22 89
IV.POFI.HHZ. 2019-08-22T18:10:28.04 0.1 undecidable manual P 277 0.3471 50 -0.31 89
IV.TRIV.HHZ. 2019-08-22T18:10:27.95 0.1 undecidable manual P 72 0.2959 50 0.48 87
IV.CERA.HHZ. 2019-08-22T18:10:27.89 0.3 undecidable manual S 236 0.1385 123 0.59 64
IV.COR1.EHZ. 2019-08-22T18:10:25.03 3.0 undecidable manual Sg -2.75 0
IV.MIDA.HHZ. 2019-08-22T18:10:25.10 0.1 undecidable manual S 118 0.0683 143 -0.2 96
IV.CERA.HHZ. 2019-08-22T18:10:24.37 0.1 undecidable manual P 236 0.1385 123 -0.22 94
IV.RNI2.HHZ. 2019-08-22T18:10:24.74 0.1 undecidable manual S 331 0.0324 160 0.1 99
IV.RNI2.HHZ. 2019-08-22T18:10:23.02 0.1 negative manual P 331 0.0324 160 -0.03 100
IV.MIDA.HHZ. 2019-08-22T18:10:23.36 0.1 positive manual P 118 0.0683 143 -0.07 98
IV.SAMA.HHZ. 2019-08-22T18:10:20.43 3.0 negative manual Pg 7.13 0
MN.TRI.HHZ. 2019-08-22T18:10:19.89 3.0 undecidable manual Sn 3.84 0
IV.LAV9.HNZ. 2019-08-22T18:10:04.05 3.0 undecidable manual Pn -9.99 0
GU.GSCL.HHZ. 2019-08-22T18:10:00.13 3.0 undecidable manual Sg 0.33 0
IV.BRSN.HNZ. 2019-08-22T18:09:58.28 3.0 undecidable manual Sn -9.35 0
IV.FRON.EHZ. 2019-08-22T18:09:55.48 3.0 undecidable manual Pg 2.19 0
IV.NRCA.HHZ. 2019-08-22T18:09:52.27 3.0 undecidable manual Pn -9.99 0
IV.SERM.HNZ. 2019-08-22T18:09:51.32 3.0 undecidable manual Sg 0.54 0
IV.BRSN.HNZ. 2019-08-22T18:09:44.97 3.0 negative manual Pg 2.71 0
IV.APEC.HHZ. 2019-08-22T18:09:43.78 3.0 positive manual Pn -7.6 0
GU.RNCA.HHZ. 2019-08-22T18:09:41.76 3.0 positive manual Pn 0.14 0
GU.GRAM.HHZ. 2019-08-22T18:09:35.46 3.0 positive manual P -1.53 0
OX.VARN.HHZ. 2019-08-22T18:09:33.95 3.0 undecidable manual P -0.32 0
IV.ORZI.HHZ. 2019-08-22T18:09:31.39 3.0 negative manual P 0.75 0
IV.NDIM.HNZ. 2019-08-22T18:09:29.15 3.0 positive manual P -3.7 0
IV.MBAL.EHZ. 2019-08-22T18:09:28.86 3.0 undecidable manual P 0.05 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERA.HHN. ML:1.2 0.0001345 0.78 AML other m 2019-08-22T18:10:28.86
IV.RNI2.HNN. ML:2.3 0.00465 1.58 AML other m 2019-08-22T18:10:24.92
IV.MIDA.HNE. ML:1.7 0.00147 0.62 AML other m 2019-08-22T18:10:25.77
IV.MIDA.HHN. ML:1.8 0.00162 0.14 AML other m 2019-08-22T18:10:25.77
IV.RNI2.HHE. ML:2 0.002565 1.38 AML other m 2019-08-22T18:10:26.06
IV.RNI2.HNE. ML:2 0.00236 1.4 AML other m 2019-08-22T18:10:26.06
IV.MIDA.HNN. ML:2.1 0.001665 0.64 AML other m 2019-08-22T18:10:26.10
IV.MIDA.HHE. ML:1.9 0.001835 0.74 AML other m 2019-08-22T18:10:26.38
IV.CERA.HHE. ML:1.1 0.000157 0.5 AML other m 2019-08-22T18:10:29.48
IV.SAMA.HHN. ML:2.6 0.0002855 0.06 AML other m 2019-08-22T18:11:19.43
IV.RNI2.HHN. ML:2.3 0.0038324215 0.64 AML other m 2019-08-22T18:10:24.92
IV.CERA.HNE. ML:1 0.000104380785 0.1792 AML other m 2019-08-22T18:10:28.21
IV.CERA.HNN. ML:1 9.729597E-5 0.3328 AML other m 2019-08-22T18:10:28.07
TDMT - Time Domain Moment Tensor
Focal Mechanism 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 full SEED format Download