Earthquake with magnitude of ML 0.8 on date 16-09-2020 and time 10:04:21 (Italy) in region 2 km E Campello sul Clitunno (PG)

A magnitude ML 0.8 earthquake occured in region: 2 km E Campello sul Clitunno (PG), on

  • 16-09-2020 08:04:21 (UTC)
  • 16-09-2020 10:04:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.82, 12.8 at 11 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
Campello sul Clitunno PG 2 2442 2442
Vallo di Nera PG 7 364 2806
Trevi PG 8 8469 11275
Cerreto di Spoleto PG 10 1075 12350
Sant'Anatolia di Narco PG 10 564 12914
Spoleto PG 10 38218 51132
Castel Ritaldi PG 10 3278 54410
Scheggino PG 12 461 54871
Sellano PG 13 1079 55950
Montefalco PG 15 5679 61629
Poggiodomo PG 16 117 61746
Foligno PG 17 57155 118901
Giano dell'Umbria PG 18 3846 122747

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km SE of Foligno (57155 inhabitants)
31 Km NE of Terni (111501 inhabitants)
47 Km SE of Perugia (166134 inhabitants)
71 Km NW of L'Aquila (69753 inhabitants)
72 Km NE of Viterbo (67173 inhabitants)
76 Km W of Teramo (54892 inhabitants)
91 Km N of Guidonia Montecelio (88673 inhabitants)
95 Km N of Tivoli (56533 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
Reviewed
Rev100
ML 0.8 2020-09-16
08:04:21
42.82 12.8 11 2020-09-16
08:11:56
Sala Sismica INGV-Roma 82948041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-16 08:04:21 ± 0.08
Latitude 42.82 ± 0.00
Longitude 12.80 ± 0.01
Depth (km) 11 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82948041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 528
Semi-minor axis of confidence ellipse (meter) 215
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 279
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) 69
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.14209
Epicentral distance of station farthest from the epicenter (degree) 0.2599
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:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 11
Type of magnitude ML
Reference to an origin 82948041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-16 08:11:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2020-09-16T08:04:31.50 0.3 undecidable manual S 335 0.2482 50 -0.05 74
IV.CESX.HHE. 2020-09-16T08:04:31.56 0.3 undecidable manual S 217 0.2599 50 -0.34 71
IV.NRCA.HHZ. 2020-09-16T08:04:30.97 0.3 undecidable manual S 86 0.2311 50 -0.06 76
IV.CESI.HHZ. 2020-09-16T08:04:30.18 0.6 undecidable manual S 22 0.2032 50 -0.03 50
IV.MOMA.HHZ. 2020-09-16T08:04:29.19 0.3 undecidable manual S 266 0.1691 50 -0.01 76
IV.GAVE.EHZ. 2020-09-16T08:04:28.32 0.3 undecidable manual S 151 0.1421 125 -0.08 77
IV.NRCA.HHZ. 2020-09-16T08:04:27.00 0.1 undecidable manual P 86 0.2311 50 -0.1 100
IV.ASSB.HHZ. 2020-09-16T08:04:27.38 0.6 undecidable manual P 335 0.2482 50 -0.02 50
IV.CESX.HHE. 2020-09-16T08:04:27.99 0.1 undecidable manual P 217 0.2599 50 0.39 93
IV.CESI.HHZ. 2020-09-16T08:04:26.63 0.3 negative manual P 22 0.2032 50 0.01 76
IV.GAVE.EHZ. 2020-09-16T08:04:25.60 0.3 positive manual P 151 0.1421 125 0.02 77
IV.MOMA.HHZ. 2020-09-16T08:04:25.91 0.6 negative manual P 266 0.1691 50 -0.13 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:1.3 0.0001783704 0.1792 AML other m 2020-09-16T08:04:28.70
IV.GAVE.EHN. ML:1.3 0.00018664925 0.2176 AML other m 2020-09-16T08:04:28.76
IV.GAVE.HNE. ML:1.4 0.0002132592 0.2496 AML other m 2020-09-16T08:04:28.70
IV.MOMA.HHE. ML:0.6 2.9811375E-5 0.1216 AML other m 2020-09-16T08:04:29.87
IV.MOMA.HHN. ML:0.5 2.6774205E-5 0.1792 AML other m 2020-09-16T08:04:29.83
IV.CESI.HHE. ML:0.7 3.196186E-5 0.0576 AML other m 2020-09-16T08:04:30.79
IV.CESI.HHN. ML:1 5.8022075E-5 0.16 AML other m 2020-09-16T08:04:30.27
IV.NRCA.HHE. ML:0.6 2.024662E-5 0.16 AML other m 2020-09-16T08:04:33.42
IV.NRCA.HHN. ML:0.8 3.5118175E-5 0.1024 AML other m 2020-09-16T08:04:31.46
IV.ASSB.HHE. ML:0.8 2.937844E-5 0.256 AML other m 2020-09-16T08:04:31.65
IV.ASSB.HHN. ML:0.7 2.3156275E-5 0.1792 AML other m 2020-09-16T08:04:31.90
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