Earthquake with magnitude of ML 1.6 on date 18-05-2020 and time 04:19:35 (Italy) in region 5 km E Norcia (PG)

A magnitude ML 1.6 earthquake occured in region: 5 km E Norcia (PG), on

  • 18-05-2020 02:19:35 (UTC)
  • 18-05-2020 04:19:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.77, 13.15 at 10 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
Norcia PG 5 4957 4957
Accumoli RI 12 667 5624
Arquata del Tronto AP 12 1178 6802
Cascia PG 13 3217 10019
Castelsantangelo sul Nera MC 14 281 10300
Preci PG 15 724 11024
Montegallo AP 17 523 11547
Cittareale RI 17 482 12029
Visso MC 18 1107 13136
Poggiodomo PG 19 117 13253
Ussita MC 19 444 13697
Cerreto di Spoleto PG 20 1075 14772
Amatrice RI 20 2657 17429

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
47 Km W of Teramo (54892 inhabitants)
47 Km NE of Terni (111501 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
72 Km SE of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km W of Pescara (121014 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
96 Km W of Chieti (51815 inhabitants)
99 Km SW of Ancona (100861 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 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. 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 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, 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 from 1985 to the date of the event

Earthquakes from 1985 to the date of the event *

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 2019

Earthquakes since 1000 AD until 2019 *

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
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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
Bulletin
Rev1000
ML 1.6 2020-05-18
02:19:35
42.77 13.15 10 2020-11-19
12:36:53
Bollettino Sismico Italiano INGV 81050291
Reviewed
Rev100
ML 2.2 2020-05-18
02:19:35
42.78 13.16 11 2020-05-18
02:26:37
Sala Sismica INGV-Roma 79253651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-18 02:19:35 ± 0.07
Latitude 42.77 ± 0.00
Longitude 13.15 ± 0.01
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 81050291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 526
Semi-minor axis of confidence ellipse (meter) 133
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 69
Circular confidence region, given by single value of horizontal uncertainty (meter) 530
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.37052
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 81050291
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-08-06 08:51:29

ML:2.2

Field Value
Value 2.2
Uncertainty 0
Num. used stations 4
Type of magnitude ML
Reference to an origin 79253651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-18 02:26:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.GSCL.HHZ. 2020-05-18T02:20:41.59 3.0 undecidable manual Sn 4.13 0
IV.MFNL.HHZ. 2020-05-18T02:20:38.78 3.0 undecidable manual Pn 3.92 0
IV.SPS2.HHZ. 2020-05-18T02:20:34.64 3.0 undecidable manual Pn 6.7 0
IT.FIE.HGZ. 2020-05-18T02:20:19.01 3.0 undecidable manual Sn -0.31 0
IV.BRSN.EHZ. 2020-05-18T02:19:59.76 3.0 undecidable manual Pn 0.7 0
IV.SAP2.EHE. 2020-05-18T02:19:50.75 0.6 undecidable manual S 30 0.3705 50 1.16 33
IV.GUMA.HNN. 2020-05-18T02:19:49.24 0.6 undecidable manual S 25 0.3193 50 1.18 33
IV.TERO.HHZ. 2020-05-18T02:19:48.51 0.1 undecidable manual S 114 0.3669 50 -0.99 72
IV.CESI.HHZ. 2020-05-18T02:19:47.33 0.1 undecidable manual S 322 0.2914 50 0.09 98
IV.CAMP.HHE. 2020-05-18T02:19:47.50 0.6 undecidable manual S 141 0.3058 50 -0.18 48
IV.FDMO.HHZ. 2020-05-18T02:19:46.26 0.1 undecidable manual S 350 0.2653 50 -0.22 96
IV.RM33.HNE. 2020-05-18T02:19:46.76 0.6 undecidable manual S 170 0.2698 50 0.16 48
IT.MTCL.HGZ. 2020-05-18T02:19:45.66 0.1 undecidable manual S 334 0.2446 50 -0.21 96
IV.SMA1.EHN. 2020-05-18T02:19:44.47 0.6 undecidable manual S 136 0.1988 114 0.14 49
IV.SAP2.EHE. 2020-05-18T02:19:44.11 0.3 undecidable manual P 30 0.3705 50 0.3 69
IV.FEMA.HNZ. 2020-05-18T02:19:44.20 0.1 undecidable manual S 339 0.2005 114 -0.2 97
IV.TERO.HHZ. 2020-05-18T02:19:43.72 0.1 undecidable manual P 114 0.3669 50 -0.04 97
IV.T1299.EHE. 2020-05-18T02:19:43.57 0.1 undecidable manual S 145 0.1709 118 0.2 98
IV.PF6.EHN. 2020-05-18T02:19:43.59 0.3 undecidable manual P 5 0.3651 50 -0.12 72
IV.GUMA.HNN. 2020-05-18T02:19:43.42 0.3 undecidable manual P 25 0.3193 50 0.49 67
IV.MMO1.EHZ. 2020-05-18T02:19:43.28 0.1 undecidable manual S 46 0.1808 117 -0.42 93
IV.LNSS.HHZ. 2020-05-18T02:19:43.67 0.1 undecidable manual S 205 0.1889 115 -0.31 95
IV.MF5.EHN. 2020-05-18T02:19:43.15 0.3 undecidable manual P 47 0.3121 50 0.34 69
IV.MTRA.EHZ. 2020-05-18T02:19:43.64 0.1 undecidable manual S 96 0.1826 116 -0.13 99
IV.CSP1.EHE. 2020-05-18T02:19:42.80 0.3 undecidable manual P 7 0.3202 50 -0.14 72
IV.RM33.HNE. 2020-05-18T02:19:42.13 0.1 undecidable manual P 170 0.2698 50 0.04 99
IV.MC2.EHN. 2020-05-18T02:19:42.47 0.1 undecidable manual S 12 0.1403 123 0.14 100
IV.CESI.HHZ. 2020-05-18T02:19:42.47 0.1 undecidable manual P 322 0.2914 50 0.01 99
IV.CAMP.HHE. 2020-05-18T02:19:42.62 0.3 undecidable manual P 141 0.3058 50 -0.09 73
IT.MTCL.HGZ. 2020-05-18T02:19:41.51 0.1 undecidable manual P 334 0.2446 50 -0.15 97
IV.FDMO.HHZ. 2020-05-18T02:19:41.82 0.1 undecidable manual P 350 0.2653 50 -0.2 96
IV.SMA1.EHN. 2020-05-18T02:19:41.16 0.3 undecidable manual P 136 0.1988 114 0.39 70
IV.MMO1.EHZ. 2020-05-18T02:19:40.21 0.1 undecidable manual P 46 0.1808 117 -0.2 98
IV.LNSS.HHZ. 2020-05-18T02:19:40.84 0.1 undecidable manual P 205 0.1889 115 0.27 96
IV.MTRA.EHZ. 2020-05-18T02:19:40.37 0.1 undecidable manual P 96 0.1826 116 -0.08 100
IV.ROM9.HNZ. 2020-05-18T02:19:40.11 3.0 negative manual P -0.02 0
IV.T1299.EHE. 2020-05-18T02:19:40.45 0.1 undecidable manual P 145 0.1709 118 0.23 97
IV.FEMA.HNZ. 2020-05-18T02:19:40.71 0.1 undecidable manual P 339 0.2005 114 -0.1 99
IV.MC2.EHN. 2020-05-18T02:19:39.82 0.1 undecidable manual P 12 0.1403 123 0.2 98
IV.NRCA.HNZ. 2020-05-18T02:19:39.99 0.1 undecidable manual S 337 0.0639 145 -0.19 100
IV.NRCA.HNZ. 2020-05-18T02:19:38.68 0.1 negative manual P 337 0.0639 145 0.3 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HNN. ML:1.4 0.00019599345 0.6496 AML other m 2020-05-18T02:19:40.46
IV.NRCA.HNN. ML:2.1 0.001931391 0.1312 AML other m 2020-05-18T02:19:40.15
IV.NRCA.HHN. ML:2.2 0.0021703275 0.1216 AML other m 2020-05-18T02:19:40.16
IV.NRCA.HNE. ML:2.2 0.0022942985 0.16 AML other m 2020-05-18T02:19:40.28
IV.NRCA.HHE. ML:2.2 0.002436343 0.16 AML other m 2020-05-18T02:19:40.20
IV.MTRA.HNE. ML:1.5 0.000222805 0.3408 AML other m 2020-05-18T02:19:43.64
IV.MTRA.EHE. ML:1.5 0.00023279225 0.3408 AML other m 2020-05-18T02:19:43.64
IV.MTRA.EHN. ML:1.4 0.0001934603 0.24 AML other m 2020-05-18T02:19:43.80
IV.LNSS.HHE. ML:1.6 0.0003025509 0.2192 AML other m 2020-05-18T02:19:44.57
IV.LNSS.HNE. ML:1.6 0.00027797775 0.2192 AML other m 2020-05-18T02:19:44.57
IV.LNSS.HHN. ML:1.5 0.00023280675 0.2608 AML other m 2020-05-18T02:19:45.07
IV.MTRA.HNN. ML:1.4 0.0002008332 1.76 AML other m 2020-05-18T02:19:45.49
IV.FDMO.HHE. ML:1.2 7.226086E-5 1.0592 AML other m 2020-05-18T02:19:48.26
IV.FDMO.HHN. ML:1.1 6.020519E-5 0.88 AML other m 2020-05-18T02:19:49.18
IV.BRSN.HNN. ML:3.3 0.00068858315 0.0896 AML other m 2020-05-18T02:20:07.88
IV.BRSN.EHN. ML:3.3 0.0006940755 0.1008 AML other m 2020-05-18T02:20:07.89
IV.BRSN.HNE. ML:3.5 0.001122179 0.0608 AML other m 2020-05-18T02:20:07.94
IV.BRSN.EHE. ML:3.5 0.0010789055 0.0608 AML other m 2020-05-18T02:20:07.98
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

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 miniseed + resp format Download