INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 2.1 on date 19-10-2018 and time 10:41:36 (Italy) in region 3 km E Bolognola (MC)

A magnitude ML 2.1 earthquake occured in region: 3 km E Bolognola (MC), on

  • 19-10-2018 08:41:36 (UTC)
  • 19-10-2018 10:41:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.99, 13.26 at 26 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
Bolognola MC 3 142 142
Sarnano MC 6 3264 3406
Amandola FM 8 3629 7035
Montefortino FM 8 1178 8213
Acquacanina MC 9 121 8334
Fiastra MC 10 559 8893
Gualdo MC 11 815 9708
Montemonaco AP 11 604 10312
Ussita MC 11 444 10756
Comunanza AP 13 3166 13922
Cessapalombo MC 13 512 14434
San Ginesio MC 14 3498 17932
Castelsantangelo sul Nera MC 14 281 18213
Smerillo FM 15 365 18578
Penna San Giovanni MC 15 1108 19686
Monte San Martino MC 15 765 20451
Fiordimonte MC 15 202 20653
Visso MC 16 1107 21760
Camporotondo di Fiastrone MC 16 563 22323
Montefalcone Appennino FM 16 424 22747
Sant'Angelo in Pontano MC 16 1436 24183
Pievebovigliana MC 17 866 25049
Caldarola MC 17 1823 26872
Montegallo AP 17 523 27395
Pieve Torina MC 18 1458 28853
Force AP 19 1354 30207
Palmiano AP 19 196 30403
Ripe San Ginesio MC 19 852 31255
Santa Vittoria in Matenano FM 19 1330 32585
Belforte del Chienti MC 20 1886 34471

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km E of Foligno (57155 inhabitants)
51 Km NW of Teramo (54892 inhabitants)
69 Km NE of Terni (111501 inhabitants)
72 Km N of L'Aquila (69753 inhabitants)
72 Km E of Perugia (166134 inhabitants)
73 Km S of Ancona (100861 inhabitants)
90 Km NW of Montesilvano (53738 inhabitants)
97 Km NW of Pescara (121014 inhabitants)
97 Km S of Fano (60888 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

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
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 2.1 2018-10-19
08:41:36
42.99 13.27 26 2018-10-19
08:55:12
Sala Sismica INGV-Roma 62104891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-10-19 08:41:36 ± 0.08
Latitude 42.99 ± 0.00
Longitude 13.27 ± 0.00
Depth (km) 26 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 62104891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 500
Semi-minor axis of confidence ellipse (meter) 68
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 231
Circular confidence region, given by single value of horizontal uncertainty (meter) 500
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.56837
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 16
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 62104891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-10-19 08:55:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.GSCL.HHZ. 2018-10-19T08:42:51.06 3.0 undecidable manual Sg 10.08 0
IV.VAGA.HHZ. 2018-10-19T08:42:29.64 3.0 undecidable manual Sg 4.45 0
IV.PIEI.HHZ. 2018-10-19T08:42:02.10 3.0 undecidable manual S 0.4 0
IV.SACS.HHZ. 2018-10-19T08:41:57.90 3.0 undecidable manual P 4.33 0
IV.ARVD.HHZ. 2018-10-19T08:41:56.51 3.0 undecidable manual S -0.24 0
IV.MOMA.HHZ. 2018-10-19T08:41:56.32 3.0 undecidable manual S 0.05 0
IV.SNTG.HHZ. 2018-10-19T08:41:50.10 0.3 undecidable manual S 318 0.3552 117 0.09 71
IV.ATVO.HHZ. 2018-10-19T08:41:50.77 3.0 positive manual P 0.82 0
IV.EL6.EHZ. 2018-10-19T08:41:50.30 0.3 undecidable manual S 341 0.3597 116 0.18 70
IV.PIEI.HHZ. 2018-10-19T08:41:50.55 3.0 positive manual P 0.28 0
IV.FRON.EHZ. 2018-10-19T08:41:49.25 3.0 positive manual P 0.41 0
IV.GIGS.HHZ. 2018-10-19T08:41:47.45 3.0 undecidable manual P -0.26 0
IV.MTRA.EHZ. 2018-10-19T08:41:47.50 0.1 undecidable manual S 158 0.2527 127 0.09 96
IV.CESI.HHZ. 2018-10-19T08:41:47.90 0.3 undecidable manual S 273 0.2644 125 0.21 71
IV.SSFR.HHZ. 2018-10-19T08:41:47.68 0.3 undecidable manual P 322 0.5684 106 0.15 67
IV.ARVD.HHZ. 2018-10-19T08:41:47.33 3.0 negative manual P -0.16 0
IV.NRCA.HHZ. 2018-10-19T08:41:46.00 0.3 undecidable manual S 215 0.1916 136 -0.05 74
IV.ATCC.EHZ. 2018-10-19T08:41:46.80 3.0 positive manual P 0.27 0
IV.RM33.EHZ. 2018-10-19T08:41:46.06 3.0 positive manual P -0.12 0
IV.ASSB.HHZ. 2018-10-19T08:41:45.41 3.0 undecidable manual P -0.25 0
IV.GAVE.EHZ. 2018-10-19T08:41:45.00 0.1 undecidable manual P 223 0.4029 113 0.13 93
IV.MF5.EHZ. 2018-10-19T08:41:45.50 0.3 undecidable manual S 91 0.1421 145 0.4 69
IV.TERO.HHZ. 2018-10-19T08:41:45.40 0.1 undecidable manual P 146 0.4434 111 -0.1 93
IV.MMO1.EHZ. 2018-10-19T08:41:44.30 0.1 undecidable manual S 154 0.1016 153 -0.18 98
IV.EL6.EHZ. 2018-10-19T08:41:44.02 0.1 undecidable manual P 341 0.3597 116 -0.17 93
IV.MC2.EHZ. 2018-10-19T08:41:44.70 0.3 undecidable manual S 215 0.0962 155 0.28 72
IV.SNTG.HHZ. 2018-10-19T08:41:44.18 0.3 undecidable manual P 318 0.3552 117 0.06 71
IV.FDMO.HHZ. 2018-10-19T08:41:44.80 0.3 undecidable manual S 290 0.1385 145 -0.23 72
IV.GAG1.HNE. 2018-10-19T08:41:43.15 0.3 undecidable manual P 330 0.2869 123 0.05 73
IV.MTRA.EHZ. 2018-10-19T08:41:42.50 0.1 undecidable manual P 158 0.2527 127 -0.12 96
IV.CESI.HHZ. 2018-10-19T08:41:42.75 0.3 undecidable manual P 273 0.2644 125 -0.03 73
IV.MF5.EHZ. 2018-10-19T08:41:41.41 0.1 undecidable manual P 91 0.1421 145 0.12 98
IV.FEMA.HNE. 2018-10-19T08:41:41.60 0.3 undecidable manual P 260 0.1601 141 0.12 73
IV.PF6.EHE. 2018-10-19T08:41:41.07 0.1 undecidable manual P 341 0.1565 142 -0.37 93
IV.NRCA.HHZ. 2018-10-19T08:41:41.88 0.1 undecidable manual P 215 0.1916 136 0.05 99
IV.FDMO.HHZ. 2018-10-19T08:41:41.04 0.1 undecidable manual P 290 0.1385 145 -0.21 96
IV.MMO1.EHZ. 2018-10-19T08:41:40.81 0.1 undecidable manual P 154 0.1016 153 -0.12 99
IV.MC2.EHZ. 2018-10-19T08:41:40.98 0.1 undecidable manual P 215 0.0962 155 0.09 100
IV.GUMA.HHZ. 2018-10-19T08:41:40.76 0.1 undecidable manual P 35 0.089 156 -0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:0 0.0005165 0.26 AML other m 2018-10-19T08:41:53.11
IV.NRCA.HHE. ML:0 0.00125 0.36 AML other m 2018-10-19T08:41:46.64
IV.NRCA.HHN. ML:0 0.0013 0.1 AML other m 2018-10-19T08:41:47.05
IV.CESI.HHN. ML:0 0.0005515 0.26 AML other m 2018-10-19T08:41:48.37
IV.MTRA.EHN. ML:0 0.0003995 0.2 AML other m 2018-10-19T08:41:48.52
IV.SNTG.HHN. ML:0 0.000228 0.14 AML other m 2018-10-19T08:41:50.31
IV.EL6.EHN. ML:0 0.0004085 0.3 AML other m 2018-10-19T08:41:51.25
IV.FDMO.HHN. ML:0 0.00052880505 0.16 AML other m 2018-10-19T08:41:45.40
IV.FDMO.HHE. ML:0 0.0007884962 0.1408 AML other m 2018-10-19T08:41:45.02
IV.MF5.EHE. ML:0 0.000295669 0.1984 AML other m 2018-10-19T08:41:45.83
IV.NRCA.HNN. ML:0 0.0011734155 0.0896 AML other m 2018-10-19T08:41:47.05
IV.NRCA.HNE. ML:0 0.00106953105 0.1664 AML other m 2018-10-19T08:41:46.64
IV.MTRA.EHE. ML:0 0.00035819625 0.1984 AML other m 2018-10-19T08:41:48.04
IV.MTRA.HNE. ML:0 0.00034786995 0.1984 AML other m 2018-10-19T08:41:48.13
IV.MTRA.HNN. ML:0 0.00035962435 0.192 AML other m 2018-10-19T08:41:48.52
IV.CESI.HHE. ML:0 0.00021684525 0.16 AML other m 2018-10-19T08:41:48.18
IV.EL6.EHE. ML:0 0.00045594025 0.2816 AML other m 2018-10-19T08:41:52.35
IV.SNTG.HHE. ML:0 8.4631595E-5 0.3584 AML other m 2018-10-19T08:41:50.30
IV.SNTG.HNN. ML:1.9 0.00024472285 0.16 AML other m 2018-10-19T08:41:50.30
IV.SNTG.HNE. ML:1.8 0.00020503745 0.128 AML other m 2018-10-19T08:41:50.30
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://cnt.rm.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