Earthquake with magnitude of ML 2.0 on date 23-08-2018 and time 13:05:37 (Italy) in region 5 km SE Montecilfone (CB)

A magnitude ML 2.0 earthquake occured in region: 5 km SE Montecilfone (CB), on

  • 23-08-2018 11:05:37 (UTC)
  • 23-08-2018 13:05:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.87, 14.88 at 23 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.

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 5 1348 1348
Guglionesi CB 6 5321 6669
Palata CB 8 1726 8395
Larino CB 8 6793 15188
Guardialfiera CB 10 1065 16253
Tavenna CB 10 718 16971
Acquaviva Collecroce CB 11 672 17643
San Martino in Pensilis CB 11 4793 22436
San Giacomo degli Schiavoni CB 13 1406 23842
Portocannone CB 13 2551 26393
Ururi CB 13 2693 29086
Montenero di Bisaccia CB 13 6675 35761
Montorio nei Frentani CB 13 437 36198
Casacalenda CB 14 2135 38333
Castelmauro CB 14 1505 39838
San Felice del Molise CB 15 634 40472
Montelongo CB 16 365 40837
Mafalda CB 16 1211 42048
Lupara CB 16 505 42553
Campomarino CB 17 7712 50265
Petacciato CB 17 3819 54084
Provvidenti CB 17 119 54203
Rotello CB 17 1212 55415
Civitacampomarano CB 18 417 55832
Termoli CB 18 33739 89571
Castelbottaccio CB 19 312 89883
Bonefro CB 19 1384 91267
Morrone del Sannio CB 19 587 91854
Montemitro CB 19 395 92249
Montefalcone nel Sannio CB 20 1556 93805
Santa Croce di Magliano CB 20 4435 98240

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km W of San Severo (53905 inhabitants)
71 Km NW of Foggia (151991 inhabitants)
79 Km SE of Chieti (51815 inhabitants)
82 Km N of Benevento (60091 inhabitants)
86 Km SE of Pescara (121014 inhabitants)
91 Km W of Manfredonia (57279 inhabitants)
94 Km SE of Montesilvano (53738 inhabitants)
99 Km NE of Caserta (76326 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours) *

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985 *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
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 1000 ML 2.0 2018-08-23
11:05:37
41.87 14.88 23 2019-04-24
14:50:58
Bollettino Sismico Italiano INGV 63633211
Rev 100 ML 2.5 2018-08-23
11:05:38
41.85 14.86 10 2018-08-23
11:34:13
Sala Sismica INGV-Roma 60123181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-08-23 11:05:37 ± 0.09
Latitude 41.87 ± 0.01
Longitude 14.88 ± 0.01
Depth (km) 23 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 63633211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 544
Semi-minor axis of confidence ellipse (meter) 495
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 35
Circular confidence region, given by single value of horizontal uncertainty (meter) 540
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 157
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.18616
Epicentral distance of station farthest from the epicenter (degree) 0.97397
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:2

Field Value
Value 2
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 63633211
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-12-04 10:17:19

ML:2.5

Field Value
Value 2.5
Uncertainty 0.4
Num. used stations 56
Type of magnitude ML
Reference to an origin 60123181
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-08-23 11:34:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MIDA.HHZ. 2018-08-23T11:05:55.10 0.3 undecidable manual S 244 0.5144 104 -0.04 71
IV.SACR.HHZ. 2018-08-23T11:05:54.66 0.6 undecidable manual S 195 0.4856 105 0.35 46
IV.SNAL.HHZ. 2018-08-23T11:05:54.72 0.1 undecidable manual P 165 0.974 97 -0.5 79
IV.BSSO.HHZ. 2018-08-23T11:05:51.48 0.3 undecidable manual S 213 0.3831 110 0.07 74
IV.INTR.HHZ. 2018-08-23T11:05:50.97 0.1 negative manual P 282 0.7356 99 -0.22 88
IV.VAGA.HHZ. 2018-08-23T11:05:49.54 0.6 undecidable manual P 227 0.6574 101 -0.34 43
IV.RNI2.HHZ. 2018-08-23T11:05:48.48 0.1 undecidable manual P 253 0.563 103 0.19 93
IV.LPEL.HHZ. 2018-08-23T11:05:48.11 0.1 undecidable manual P 290 0.545 103 0.12 95
IV.TRIV.HHZ. 2018-08-23T11:05:48.23 0.6 undecidable manual S 248 0.2617 121 0.07 51
IV.SACR.HHZ. 2018-08-23T11:05:47.09 0.1 positive manual P 195 0.4856 105 0.08 97
IV.APRC.HHN. 2018-08-23T11:05:47.28 0.1 undecidable manual P 102 0.509 105 -0.12 96
IV.PTRJ.HHZ. 2018-08-23T11:05:47.77 0.6 undecidable manual P 207 0.5648 103 -0.56 41
IV.MELA.HNE. 2018-08-23T11:05:47.85 0.6 undecidable manual S 131 0.2473 123 0.07 51
IV.MIDA.HHZ. 2018-08-23T11:05:47.28 0.1 undecidable manual P 244 0.5144 104 -0.21 92
IV.FRES.HHZ. 2018-08-23T11:05:46.15 0.6 undecidable manual S 305 0.1862 132 -0.2 49
IV.CIGN.HHZ. 2018-08-23T11:05:46.90 0.6 undecidable manual S 174 0.214 127 -0.07 50
IV.BSSO.HHZ. 2018-08-23T11:05:45.72 0.1 positive manual P 213 0.3831 110 0.38 93
IV.GATE.HHE. 2018-08-23T11:05:45.08 1.0 undecidable manual P 176 0.3543 112 0.2 24
IV.MELA.HNE. 2018-08-23T11:05:43.36 0.1 undecidable manual P 131 0.2473 123 0.12 100
IV.TRIV.HHZ. 2018-08-23T11:05:43.76 0.3 undecidable manual P 248 0.2617 121 0.3 73
IV.FRES.HHZ. 2018-08-23T11:05:42.44 0.3 undecidable manual P 305 0.1862 132 0.03 78
IV.CIGN.HHZ. 2018-08-23T11:05:42.79 0.3 undecidable manual P 174 0.214 127 0.02 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FRES.HHN. ML:2 0.00052230255 0.224 AML other m 2018-08-23T11:05:46.76
IV.FRES.HHE. ML:2.4 0.001164082 0.8192 AML other m 2018-08-23T11:05:47.17
IV.BSSO.HNN. ML:1.9 0.00021031185 0.224 AML other m 2018-08-23T11:05:51.80
IV.BSSO.HHN. ML:0 0.00015614115 0.2816 AML other m 2018-08-23T11:05:53.02
IV.SACR.HHN. ML:1.9 0.0001837213 0.3008 AML other m 2018-08-23T11:05:55.30
IV.SACR.HNN. ML:1.9 0.0001809209 0.32 AML other m 2018-08-23T11:05:55.15
IV.MIDA.HHE. ML:2.1 0.000238825 0.4416 AML other m 2018-08-23T11:05:55.66
IV.MIDA.HNE. ML:2.1 0.000246164 0.256 AML other m 2018-08-23T11:05:55.66
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
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