INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.2 on date 20-09-2018 and time 22:02:54 (Italy) in region 6 km S Montecilfone (CB)

A magnitude ML 1.2 earthquake occured in region: 6 km S Montecilfone (CB), on

  • 20-09-2018 20:02:54 (UTC)
  • 20-09-2018 22:02:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.85, 14.85 at 14 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
Montecilfone CB 6 1348 1348
Guardialfiera CB 7 1065 2413
Larino CB 7 6793 9206
Palata CB 7 1726 10932
Acquaviva Collecroce CB 9 672 11604
Guglionesi CB 9 5321 16925
Tavenna CB 10 718 17643
Montorio nei Frentani CB 12 437 18080
Casacalenda CB 12 2135 20215
Castelmauro CB 12 1505 21720
Lupara CB 13 505 22225
San Felice del Molise CB 13 634 22859
San Martino in Pensilis CB 14 4793 27652
Montenero di Bisaccia CB 14 6675 34327
Ururi CB 14 2693 37020
Provvidenti CB 14 119 37139
Montelongo CB 15 365 37504
Civitacampomarano CB 15 417 37921
Portocannone CB 15 2551 40472
San Giacomo degli Schiavoni CB 16 1406 41878
Castelbottaccio CB 16 312 42190
Mafalda CB 16 1211 43401
Morrone del Sannio CB 16 587 43988
Rotello CB 17 1212 45200
Bonefro CB 17 1384 46584
Montemitro CB 18 395 46979
Montefalcone nel Sannio CB 18 1556 48535
Ripabottoni CB 18 514 49049
Lucito CB 19 696 49745
Petacciato CB 19 3819 53564
Castellino del Biferno CB 19 545 54109
Santa Croce di Magliano CB 19 4435 58544
Campomarino CB 19 7712 66256

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km W of San Severo (53905 inhabitants)
72 Km NW of Foggia (151991 inhabitants)
80 Km SE of Chieti (51815 inhabitants)
80 Km N of Benevento (60091 inhabitants)
87 Km SE of Pescara (121014 inhabitants)
92 Km W of Manfredonia (57279 inhabitants)
94 Km SE of Montesilvano (53738 inhabitants)
96 Km NE of Caserta (76326 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 2018-09-20
20:02:54
41.85 14.85 14 2018-09-20
20:13:16
Sala Sismica INGV-Roma 61156771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-20 20:02:54 ± 0.26
Latitude 41.85 ± 0.01
Longitude 14.85 ± 0.01
Depth (km) 14 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 61156771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1217
Semi-minor axis of confidence ellipse (meter) 364
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 42
Circular confidence region, given by single value of horizontal uncertainty (meter) 1220
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 134
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.08813
Epicentral distance of station farthest from the epicenter (degree) 0.91461
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 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 61156771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-20 20:13:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VVLD.HHZ. 2018-09-20T20:03:11.64 0.3 undecidable manual P 272 0.9146 92 -0.28 62
IV.MELA.HHZ. 2018-09-20T20:03:05.01 0.6 undecidable manual S 124 0.2482 101 0.26 48
IV.FRES.HHZ. 2018-09-20T20:03:03.23 0.3 undecidable manual S 313 0.1862 108 0.28 71
IV.CIGN.HHZ. 2018-09-20T20:03:02.58 0.3 undecidable manual S 168 0.1961 107 -0.66 64
IV.MELA.HHZ. 2018-09-20T20:03:00.65 0.1 undecidable manual P 124 0.2482 101 0.08 100
YD.T1412.EHZ. 2018-09-20T20:03:00.51 0.6 undecidable manual S 225 0.0881 136 0.03 51
IV.CIGN.HHZ. 2018-09-20T20:03:00.10 0.1 undecidable manual P 168 0.1961 107 0.41 94
YD.T1413.EHZ. 2018-09-20T20:03:00.84 0.1 undecidable manual S 87 0.1232 123 -0.43 96
YD.T1412.EHZ. 2018-09-20T20:02:58.27 0.1 undecidable manual P 225 0.0881 136 0.17 100
YD.T1413.EHZ. 2018-09-20T20:02:58.91 0.1 undecidable manual P 87 0.1232 123 0.34 96
IV.FRES.HHZ. 2018-09-20T20:02:58.69 0.6 undecidable manual P 313 0.1862 108 -0.84 41
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
YD.T1412.EHE. ML:1.3 0.0001825 0.14 AML other m 2018-09-20T20:03:01.00
YD.T1412.EHN. ML:1.2 0.00017 1.32 AML other m 2018-09-20T20:03:01.90
IV.MELA.HHE. ML:1.1 6.735E-5 0.38 AML other m 2018-09-20T20:03:05.73
IV.MELA.HHN. ML:1.2 7.035E-5 1.72 AML other m 2018-09-20T20:03:05.01
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