INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.2 on date 18-10-2018 and time 16:48:39 (Italy) in region 3 km W Vastogirardi (IS)

A magnitude ML 1.2 earthquake occured in region: 3 km W Vastogirardi (IS), on

  • 18-10-2018 14:48:39 (UTC)
  • 18-10-2018 16:48:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.78, 14.22 at 18 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
Vastogirardi IS 3 704 704
San Pietro Avellana IS 3 503 1207
Capracotta IS 7 903 2110
Castel del Giudice IS 9 346 2456
Ateleta AQ 9 1181 3637
Roccasicura IS 9 550 4187
Carovilli IS 9 1359 5546
Castel di Sangro AQ 10 6538 12084
Forlì del Sannio IS 10 675 12759
Rionero Sannitico IS 10 1118 13877
Sant'Angelo del Pesco IS 12 364 14241
Agnone IS 12 5139 19380
Pescopennataro IS 13 285 19665
Acquaviva d'Isernia IS 13 425 20090
Roccaraso AQ 14 1627 21717
Pietrabbondante IS 14 759 22476
Gamberale CH 14 320 22796
Pescolanciano IS 15 855 23651
Castelverrino IS 15 115 23766
Montenero Val Cocchiara IS 15 538 24304
Miranda IS 15 1047 25351
Scontrone AQ 16 574 25925
Poggio Sannita IS 16 702 26627
Pizzoferrato CH 16 1130 27757
Alfedena AQ 16 864 28621
Rivisondoli AQ 17 700 29321
Cerro al Volturno IS 17 1281 30602
Borrello CH 17 354 30956
Quadri CH 17 815 31771
Rosello CH 17 237 32008
Belmonte del Sannio IS 18 768 32776
Chiauci IS 18 233 33009
Pescocostanzo AQ 18 1128 34137
Sessano del Molise IS 18 727 34864
Castel San Vincenzo IS 19 516 35380
Barrea AQ 19 726 36106
Pesche IS 19 1661 37767
Roio del Sangro CH 19 103 37870
Civitanova del Sannio IS 20 945 38815
Civitaluparella CH 20 351 39166
Fallo CH 20 139 39305
Pizzone IS 20 329 39634

Municipalities with at least 50000 inhabitants

An earthquake occurred to
64 Km S of Chieti (51815 inhabitants)
76 Km S of Pescara (121014 inhabitants)
79 Km N of Caserta (76326 inhabitants)
82 Km S of Montesilvano (53738 inhabitants)
86 Km NW of Benevento (60091 inhabitants)
90 Km N of Aversa (53047 inhabitants)
93 Km SE of L'Aquila (69753 inhabitants)
93 Km N of Acerra (59573 inhabitants)
95 Km N of Giugliano in Campania (122974 inhabitants)
96 Km N of Afragola (65057 inhabitants)
97 Km W of San Severo (53905 inhabitants)
97 Km N of Casoria (77642 inhabitants)
98 Km N of Marano di Napoli (59874 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 2018-10-18
14:48:39
41.78 14.22 18 2018-10-18
15:03:26
Sala Sismica INGV-Roma 62083721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-10-18 14:48:39 ± 0.13
Latitude 41.78 ± 0.00
Longitude 14.22 ± 0.01
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 62083721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 895
Semi-minor axis of confidence ellipse (meter) 286
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 82
Circular confidence region, given by single value of horizontal uncertainty (meter) 900
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 221
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.09263
Epicentral distance of station farthest from the epicenter (degree) 0.38581
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 62083721
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-10-18 15:03:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.POFI.HNE. 2018-10-18T14:48:53.35 0.6 undecidable manual S 261 0.3858 102 0.09 62
IV.INTR.HHZ. 2018-10-18T14:48:51.68 0.3 undecidable manual S 314 0.331 105 -0.01 95
IV.LPEL.HHZ. 2018-10-18T14:48:49.76 0.6 undecidable manual S 354 0.2689 110 -0.15 62
IV.CERA.HHZ. 2018-10-18T14:48:48.83 0.6 undecidable manual S 220 0.2374 113 -0.23 63
IV.POFI.HNE. 2018-10-18T14:48:47.12 0.3 undecidable manual P 261 0.3858 102 -0.19 91
IV.INTR.HHZ. 2018-10-18T14:48:46.50 0.3 undecidable manual P 314 0.331 105 0.1 95
IV.LPEL.HHZ. 2018-10-18T14:48:45.49 0.3 undecidable manual P 354 0.2689 110 0.11 96
IV.RNI2.HHZ. 2018-10-18T14:48:45.62 0.3 undecidable manual S 215 0.0926 144 -0.03 100
IV.CERA.HHZ. 2018-10-18T14:48:44.86 0.3 undecidable manual P 220 0.2374 113 -0.02 97
IV.RNI2.HHZ. 2018-10-18T14:48:43.08 0.3 undecidable manual P 215 0.0926 144 0.17 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RNI2.HHN. ML:1.3 0.0001675 0.78 AML other m 2018-10-18T14:48:46.96
IV.RNI2.HNE. ML:1.4 0.000198 0.16 AML other m 2018-10-18T14:48:46.25
IV.RNI2.HHE. ML:1.4 0.000208 0.14 AML other m 2018-10-18T14:48:46.25
IV.RNI2.HNN. ML:1.2 0.00013466159 0.1408 AML other m 2018-10-18T14:48:47.10
IV.INTR.HHN. ML:0.9 2.8625045E-5 0.5376 AML other m 2018-10-18T14:48:55.55
IV.INTR.HHE. ML:0.8 1.805073E-5 0.1344 AML other m 2018-10-18T14:48:52.12
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