Earthquake with magnitude of ML 1.2 on date 20-08-2019 and time 03:15:22 (Italy) in region 2 km W Roccasicura (IS)

A magnitude ML 1.2 earthquake occured in region: 2 km W Roccasicura (IS), on

  • 20-08-2019 01:15:22 (UTC)
  • 20-08-2019 03:15:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.7, 14.21 at 11 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
Roccasicura IS 2 550 550
Forlì del Sannio IS 2 675 1225
Acquaviva d'Isernia IS 6 425 1650
Rionero Sannitico IS 6 1118 2768
Miranda IS 7 1047 3815
Carovilli IS 7 1359 5174
Vastogirardi IS 10 704 5878
Cerro al Volturno IS 10 1281 7159
San Pietro Avellana IS 11 503 7662
Pescolanciano IS 11 855 8517
Pesche IS 11 1661 10178
Fornelli IS 11 1909 12087
Montenero Val Cocchiara IS 12 538 12625
Isernia IS 12 21842 34467
Sessano del Molise IS 12 727 35194
Rocchetta a Volturno IS 13 1113 36307
Castel San Vincenzo IS 13 516 36823
Castel di Sangro AQ 13 6538 43361
Colli a Volturno IS 14 1349 44710
Pettoranello del Molise IS 15 460 45170
Pizzone IS 15 329 45499
Chiauci IS 15 233 45732
Carpinone IS 15 1157 46889
Macchia d'Isernia IS 15 1035 47924
Alfedena AQ 15 864 48788
Scontrone AQ 15 574 49362
Scapoli IS 15 680 50042
Pietrabbondante IS 16 759 50801
Capracotta IS 16 903 51704
Montaquila IS 16 2456 54160
Civitanova del Sannio IS 17 945 55105
Sant'Agapito IS 17 1496 56601
Castelverrino IS 18 115 56716
Ateleta AQ 18 1181 57897
Castel del Giudice IS 18 346 58243
Agnone IS 18 5139 63382
Castelpetroso IS 19 1680 65062
Poggio Sannita IS 19 702 65764
Barrea AQ 19 726 66490
Monteroduni IS 19 2264 68754
Longano IS 20 690 69444
Roccaraso AQ 20 1627 71071

Municipalities with at least 50000 inhabitants

An earthquake occurred to
70 Km N of Caserta (76326 inhabitants)
73 Km S of Chieti (51815 inhabitants)
79 Km NW of Benevento (60091 inhabitants)
80 Km N of Aversa (53047 inhabitants)
84 Km N of Acerra (59573 inhabitants)
85 Km N of Giugliano in Campania (122974 inhabitants)
86 Km S of Pescara (121014 inhabitants)
86 Km N of Afragola (65057 inhabitants)
88 Km N of Casoria (77642 inhabitants)
89 Km N of Marano di Napoli (59874 inhabitants)
91 Km S of Montesilvano (53738 inhabitants)
95 Km N of Pozzuoli (81661 inhabitants)
95 Km N of Napoli (974074 inhabitants)
97 Km W of San Severo (53905 inhabitants)
98 Km N of Portici (55274 inhabitants)
99 Km SE of L'Aquila (69753 inhabitants)
99 Km N of Ercolano (53709 inhabitants)
100 Km NW of Avellino (54857 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 1.2 2019-08-20
01:15:22
41.7 14.21 11 2019-08-20
01:22:28
Sala Sismica INGV-Roma 71637471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-20 01:15:22 ± 0.1
Latitude 41.70 ± 0.01
Longitude 14.21 ± 0.01
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71637471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1082
Semi-minor axis of confidence ellipse (meter) 670
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 194
Circular confidence region, given by single value of horizontal uncertainty (meter) 1080
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.04317
Epicentral distance of station farthest from the epicenter (degree) 0.38851
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 71637471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-20 01:22:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.INTR.HHZ. 2019-08-20T01:15:36.37 0.1 undecidable manual S 324 0.3885 50 -0.12 94
IV.LPEL.HHE. 2019-08-20T01:15:35.46 0.3 undecidable manual S 357 0.3507 50 0.08 71
IV.TRIV.HHE. 2019-08-20T01:15:32.91 0.3 undecidable manual S 74 0.2635 50 0.12 72
IV.CERA.HHZ. 2019-08-20T01:15:30.19 0.1 undecidable manual S 236 0.1736 119 0.17 97
IV.INTR.HHZ. 2019-08-20T01:15:30.23 0.1 undecidable manual P 324 0.3885 50 -0.31 90
IV.LPEL.HHE. 2019-08-20T01:15:29.67 0.3 undecidable manual P 357 0.3507 50 -0.23 69
IV.TRIV.HHE. 2019-08-20T01:15:28.86 0.3 undecidable manual P 74 0.2635 50 0.46 67
IV.CERA.HHZ. 2019-08-20T01:15:26.74 0.1 undecidable manual P 236 0.1736 119 -0.06 99
IV.RNI2.HHZ. 2019-08-20T01:15:26.62 0.1 undecidable manual S 280 0.0432 156 0.19 99
IV.MIDA.HHZ. 2019-08-20T01:15:26.26 0.1 undecidable manual S 148 0.0639 146 -0.55 90
IV.MIDA.HHZ. 2019-08-20T01:15:25.12 0.1 positive manual P 148 0.0639 146 0.17 99
IV.RNI2.HHZ. 2019-08-20T01:15:24.85 0.1 undecidable manual P 280 0.0432 156 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RNI2.HHE. ML:1.7 0.0008240477 0.12 AML other m 2019-08-20T01:15:26.83
IV.RNI2.HHN. ML:1.5 0.00050889 0.12 AML other m 2019-08-20T01:15:26.88
IV.RNI2.HNE. ML:1.7 0.0007577704 0.14 AML other m 2019-08-20T01:15:26.84
IV.RNI2.HNN. ML:1.5 0.00047836995 0.12 AML other m 2019-08-20T01:15:26.88
IV.MIDA.HHE. ML:1 0.00015996725 0.1 AML other m 2019-08-20T01:15:27.57
IV.MIDA.HHN. ML:1 0.0001515368 0.2 AML other m 2019-08-20T01:15:27.04
IV.MIDA.HNE. ML:1 0.00015016135 0.18 AML other m 2019-08-20T01:15:27.04
IV.INTR.HHE. ML:0.7 1.5483905E-5 0.12 AML other m 2019-08-20T01:15:37.78
IV.INTR.HHN. ML:0.9 2.6636805E-5 0.22 AML other m 2019-08-20T01:15:37.78
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