Earthquake with magnitude of ML 2.3 on date 01-10-2018 and time 05:31:35 (Italy) in region 2 km W Sellano (PG)

A magnitude ML 2.3 earthquake occured in region: 2 km W Sellano (PG), on

  • 01-10-2018 03:31:35 (UTC)
  • 01-10-2018 05:31:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.89, 12.91 at 8 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
Sellano PG 2 1079 1079
Cerreto di Spoleto PG 8 1075 2154
Preci PG 11 724 2878
Trevi PG 13 8469 11347
Campello sul Clitunno PG 13 2442 13789
Monte Cavallo MC 14 145 13934
Vallo di Nera PG 14 364 14298
Visso MC 15 1107 15405
Foligno PG 18 57155 72560
Sant'Anatolia di Narco PG 18 564 73124
Norcia PG 19 4957 78081
Ussita MC 20 444 78525
Poggiodomo PG 20 117 78642
Castelsantangelo sul Nera MC 20 281 78923

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km E of Foligno (57155 inhabitants)
42 Km NE of Terni (111501 inhabitants)
49 Km SE of Perugia (166134 inhabitants)
70 Km W of Teramo (54892 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
84 Km NE of Viterbo (67173 inhabitants)
95 Km SW of Ancona (100861 inhabitants)
100 Km N of Guidonia Montecelio (88673 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 2.3 2018-10-01
03:31:35
42.89 12.91 8 2019-06-04
09:15:55
Bollettino Sismico Italiano INGV 61506641
Rev 100 ML 2.3 2018-10-01
03:31:35
42.9 12.9 9 2018-10-01
03:37:22
Sala Sismica INGV-Roma 61499861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-10-01 03:31:35 ± 0.04
Latitude 42.89 ± 0.00
Longitude 12.91 ± 0.00
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 61506641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 212
Semi-minor axis of confidence ellipse (meter) 206
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 40
Circular confidence region, given by single value of horizontal uncertainty (meter) 210
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 50
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.12501
Epicentral distance of station farthest from the epicenter (degree) 0.67089
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 62
Type of magnitude ML
Reference to an origin 61499861
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-10-01 03:37:22

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 52
Type of magnitude ML
Reference to an origin 61506641
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-05-07 10:14:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ATPI.EHZ. 2018-10-01T03:31:48.97 0.1 undecidable manual P 327 0.6709 50 0.14 88
IV.ATVO.HHZ. 2018-10-01T03:31:48.02 0.1 undecidable manual P 323 0.6124 50 0.18 89
IV.ARRO.EHZ. 2018-10-01T03:31:48.71 0.1 undecidable manual S 199 0.3292 50 0.33 91
IV.FRON.EHZ. 2018-10-01T03:31:48.35 0.1 undecidable manual P 348 0.6403 50 0.03 91
IV.CSP1.EHZ. 2018-10-01T03:31:47.30 0.1 undecidable manual S 47 0.295 104 -0.03 98
IV.TERO.HHZ. 2018-10-01T03:31:47.09 0.1 undecidable manual P 117 0.5756 50 -0.12 91
IV.MGAB.HHZ. 2018-10-01T03:31:47.51 0.1 undecidable manual P 272 0.5837 50 0.16 90
IV.SSFR.HHZ. 2018-10-01T03:31:46.62 0.1 undecidable manual P 350 0.5531 50 -0.2 90
IV.MURB.HHZ. 2018-10-01T03:31:45.50 0.1 undecidable manual P 323 0.4658 50 0.17 92
IV.ASSB.HHZ. 2018-10-01T03:31:45.22 0.1 undecidable manual S 310 0.2383 108 0 99
IV.EL6.EHZ. 2018-10-01T03:31:45.20 0.1 undecidable manual P 18 0.4605 50 -0.03 95
IV.RM33.EHZ. 2018-10-01T03:31:44.79 0.1 negative manual P 149 0.4425 50 -0.14 93
IV.FOSV.EHZ. 2018-10-01T03:31:44.34 0.1 positive manual P 345 0.4182 50 -0.17 93
IV.MML1.HNZ. 2018-10-01T03:31:44.89 0.3 undecidable manual S 12 0.2275 108 0.06 74
IV.SMA1.EHZ. 2018-10-01T03:31:44.25 0.1 negative manual P 130 0.4065 50 -0.06 95
IV.CESX.HHZ. 2018-10-01T03:31:43.45 0.1 positive manual P 220 0.3678 50 -0.2 93
IV.FDMO.HHZ. 2018-10-01T03:31:43.66 0.3 undecidable manual S 42 0.1952 111 -0.01 75
IV.MTRA.EHZ. 2018-10-01T03:31:43.75 0.1 negative manual P 110 0.3813 50 -0.13 94
IV.MC2.EHZ. 2018-10-01T03:31:43.97 0.3 undecidable manual S 84 0.2059 110 -0.08 74
IV.GUMA.HHZ. 2018-10-01T03:31:43.68 0.1 positive manual P 61 0.3552 50 0.24 92
IV.ARRO.EHZ. 2018-10-01T03:31:43.01 0.1 positive manual P 199 0.3292 50 0.03 97
IV.MMO1.EHZ. 2018-10-01T03:31:42.36 0.1 negative manual P 88 0.3058 50 -0.23 94
IV.NRCA.HNZ. 2018-10-01T03:31:42.37 0.1 undecidable manual S 111 0.161 115 -0.07 99
IV.CSP1.EHZ. 2018-10-01T03:31:42.25 0.1 undecidable manual P 47 0.295 104 -0.12 96
IV.FEMA.HNZ. 2018-10-01T03:31:41.51 0.6 undecidable manual S 55 0.125 121 0.28 48
IV.MOMA.HHZ. 2018-10-01T03:31:41.55 0.1 positive manual P 251 0.2635 106 -0.14 96
IV.FDMO.HHZ. 2018-10-01T03:31:40.27 0.1 positive manual P 42 0.1952 111 0.01 100
IV.MML1.HNZ. 2018-10-01T03:31:40.79 0.1 positive manual P 12 0.2275 108 -0.14 97
IV.ASSB.HHZ. 2018-10-01T03:31:40.94 0.1 undecidable manual P 310 0.2383 108 -0.21 95
IV.MC2.EHZ. 2018-10-01T03:31:40.65 0.1 undecidable manual P 84 0.2059 110 0.17 97
IV.FEMA.HNZ. 2018-10-01T03:31:39.11 0.1 undecidable manual P 55 0.125 121 0.26 96
IV.NRCA.HNZ. 2018-10-01T03:31:39.71 0.1 undecidable manual P 111 0.161 115 0.16 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FEMA.HNN. ML:2.8 0.007425 0.2 AML other m 2018-10-01T03:31:41.75
IV.FEMA.HNE. ML:2.9 0.009395 0.48 AML other m 2018-10-01T03:31:42.33
IV.NRCA.HHE. ML:2.9 0.00748 0.16 AML other m 2018-10-01T03:31:43.03
IV.NRCA.HNE. ML:2.9 0.00695 0.16 AML other m 2018-10-01T03:31:43.03
IV.NRCA.HHN. ML:2.8 0.00614 0.14 AML other m 2018-10-01T03:31:43.23
IV.NRCA.HNN. ML:2.8 0.005775 0.14 AML other m 2018-10-01T03:31:43.23
IV.FDMO.HHE. ML:2.7 0.003235 1.78 AML other m 2018-10-01T03:31:43.90
IV.FDMO.HHN. ML:2.5 0.00206 0.32 AML other m 2018-10-01T03:31:44.16
IV.ASSB.HHN. ML:2.1 0.0007795 0.34 AML other m 2018-10-01T03:31:47.22
IV.MOMA.HHE. ML:2 0.000463 1.6 AML other m 2018-10-01T03:31:47.16
IV.MOMA.HHN. ML:2.2 0.000751 0.44 AML other m 2018-10-01T03:31:49.82
IV.ARRO.EHN. ML:2.4 0.0010475 0.3 AML other m 2018-10-01T03:31:49.56
IV.GUMA.HHN. ML:2.9 0.002605 0.62 AML other m 2018-10-01T03:31:50.43
IV.SNTG.HNN. ML:0 0.000558 1.04 AML other m 2018-10-01T03:31:50.16
IV.SNTG.HHN. ML:0 0.000528 1.02 AML other m 2018-10-01T03:31:50.17
IV.ASSB.HHE. ML:2.1 0.000688 1.1 AML other m 2018-10-01T03:31:50.92
IV.MTRA.HNN. ML:2.5 0.00109 0.84 AML other m 2018-10-01T03:31:50.79
IV.MTRA.EHN. ML:2.5 0.00102 0.84 AML other m 2018-10-01T03:31:50.80
IV.SNTG.HNE. ML:0 0.000508 0.12 AML other m 2018-10-01T03:31:50.68
IV.MTRA.HNE. ML:2.6 0.001165 0.74 AML other m 2018-10-01T03:31:50.75
IV.MTRA.EHE. ML:2.5 0.0011 0.28 AML other m 2018-10-01T03:31:50.76
IV.CESX.HHN. ML:2.2 0.000573 0.3 AML other m 2018-10-01T03:31:50.83
IV.ARRO.EHE. ML:2.3 0.0008505 0.26 AML other m 2018-10-01T03:31:50.73
IV.SNTG.HHE. ML:0 0.000243 0.96 AML other m 2018-10-01T03:31:51.09
IV.MF5.EHE. ML:0 0.0007165 0.3 AML other m 2018-10-01T03:31:52.56
IV.CESX.HHE. ML:2.2 0.000513 0.5 AML other m 2018-10-01T03:31:52.41
IV.RM33.EHN. ML:2 0.0002725 0.84 AML other m 2018-10-01T03:31:53.62
IV.EL6.EHN. ML:2.5 0.0008295 0.78 AML other m 2018-10-01T03:31:54.17
IV.GUMA.HHE. ML:3 0.003185 0.42 AML other m 2018-10-01T03:31:54.47
IV.EL6.EHE. ML:2.5 0.0007925 0.38 AML other m 2018-10-01T03:31:54.61
IV.SMA1.EHN. ML:2.2 0.00046 0.38 AML other m 2018-10-01T03:31:55.04
IV.FOSV.EHE. ML:2.1 0.000397 0.66 AML other m 2018-10-01T03:31:55.45
IV.FOSV.EHN. ML:2.1 0.000341 0.82 AML other m 2018-10-01T03:31:55.94
IV.RM33.HNE. ML:2.2 0.0004125 0.38 AML other m 2018-10-01T03:31:55.75
IV.RM33.EHE. ML:2.2 0.0003925 0.36 AML other m 2018-10-01T03:31:55.75
IV.MF5.EHN. ML:0 0.0006605 1.52 AML other m 2018-10-01T03:31:55.15
IV.MURB.HNE. ML:2.4 0.0006885 0.44 AML other m 2018-10-01T03:31:55.70
IV.MURB.HHE. ML:2.4 0.000687 0.44 AML other m 2018-10-01T03:31:55.70
IV.RM33.HNN. ML:2 0.000275 0.94 AML other m 2018-10-01T03:31:56.38
IV.SSFR.HHE. ML:2.2 0.0003355 0.2 AML other m 2018-10-01T03:31:56.58
IV.MURB.HHN. ML:2.3 0.0004815 1.62 AML other m 2018-10-01T03:31:57.11
IV.MURB.HNN. ML:2.3 0.0005875 0.9 AML other m 2018-10-01T03:31:57.56
IV.MGAB.HNN. ML:2 0.000196 0.52 AML other m 2018-10-01T03:31:57.24
IV.SMA1.EHE. ML:2.2 0.0004335 1.36 AML other m 2018-10-01T03:31:57.06
IV.SSFR.HNE. ML:2.3 0.000364 0.88 AML other m 2018-10-01T03:31:58.18
IV.TERO.HHE. ML:1.8 0.000137 0.48 AML other m 2018-10-01T03:31:58.93
IV.OFFI.HHN. ML:0 0.000533 0.86 AML other m 2018-10-01T03:31:59.27
IV.TERO.HHN. ML:1.9 0.0001445 0.36 AML other m 2018-10-01T03:32:00.39
IV.MGAB.HHE. ML:2 0.0002025 1.34 AML other m 2018-10-01T03:32:00.17
IV.MGAB.HNE. ML:2 0.0001775 1.36 AML other m 2018-10-01T03:32:00.17
IV.MGAB.HHN. ML:2 0.000188 0.98 AML other m 2018-10-01T03:32:01.01
IV.SSFR.HNN. ML:2.4 0.0004825 0.24 AML other m 2018-10-01T03:32:02.58
IV.FRON.EHE. ML:2 0.000179 1.14 AML other m 2018-10-01T03:32:02.64
IV.SSFR.HHN. ML:2.3 0.000408 0.22 AML other m 2018-10-01T03:32:02.58
IV.OFFI.HHE. ML:0 0.0006495 0.74 AML other m 2018-10-01T03:32:03.21
IV.ATVO.HHE. ML:1.8 0.0001064524 0.68 AML other m 2018-10-01T03:32:03.32
IV.PIEI.HHE. ML:0 8.265E-5 1.4 AML other m 2018-10-01T03:32:03.12
IV.ATPI.EHE. ML:1.7 7.58E-5 1.22 AML other m 2018-10-01T03:32:04.90
IV.ATVO.HHN. ML:1.9 0.0001315 0.98 AML other m 2018-10-01T03:32:05.52
IV.FRON.EHN. ML:1.9 0.0001315 0.5 AML other m 2018-10-01T03:32:07.47
IV.PIEI.HHN. ML:0 6.74E-5 0.94 AML other m 2018-10-01T03:32:11.94
IV.ATPI.EHN. ML:1.7 8.61E-5 1.18 AML other m 2018-10-01T03:32:13.28
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