Earthquake with magnitude of ML 0.8 on date 20-09-2019 and time 22:43:51 (UTC) in region 3 km SE Valtopina (PG)

A magnitude ML 0.8 earthquake occured in region: 3 km SE Valtopina (PG), on

  • 20-09-2019 22:43:51 (UTC)
  • 21-09-2019 00:43:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.04, 12.78 at 7 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
Valtopina PG 3 1398 1398
Nocera Umbra PG 8 5839 7237
Spello PG 10 8645 15882
Foligno PG 11 57155 73037
Assisi PG 14 28299 101336
Serravalle di Chienti MC 14 1070 102406
Cannara PG 17 4305 106711
Trevi PG 18 8469 115180
Bevagna PG 18 5081 120261
Sefro MC 18 422 120683
Monte Cavallo MC 19 145 120828
Montefalco PG 19 5679 126507
Bastia Umbra PG 19 21874 148381

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km NE of Foligno (57155 inhabitants)
33 Km E of Perugia (166134 inhabitants)
54 Km N of Terni (111501 inhabitants)
86 Km W of Teramo (54892 inhabitants)
87 Km SE of Arezzo (99543 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
88 Km NE of Viterbo (67173 inhabitants)
91 Km NW of L'Aquila (69753 inhabitants)
92 Km S of Fano (60888 inhabitants)
98 Km S of Pesaro (94582 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
Rev 100 ML 0.8 2019-09-20
22:43:51
43.04 12.78 7 2019-09-20
23:02:21
Sala Sismica INGV-Roma 72597181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-20 22:43:51 ± 0.09
Latitude 43.04 ± 0.00
Longitude 12.78 ± 0.00
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 72597181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 382
Semi-minor axis of confidence ellipse (meter) 309
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 202
Circular confidence region, given by single value of horizontal uncertainty (meter) 380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 20
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
Epicentral distance of station farthest from the epicenter (degree) 0.49732
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 72597181
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-20 23:02:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
SI.BOSI.HHZ. 2019-09-20T22:45:31.06 3.0 undecidable manual Sn 6.31 0
IV.CET2.HHZ. 2019-09-20T22:45:27.90 3.0 undecidable manual Sn -1.86 0
IV.ORI.HHZ. 2019-09-20T22:45:24.65 3.0 undecidable manual Sn -1.34 0
IV.MILN.HHZ. 2019-09-20T22:45:24.15 3.0 undecidable manual Sn 3.02 0
IV.EUCT.HNZ. 2019-09-20T22:45:18.63 3.0 undecidable manual Sn 0.93 0
IV.ERC.EHZ. 2019-09-20T22:44:59.27 3.0 undecidable manual Pn 6.61 0
IV.MCRV.HHZ. 2019-09-20T22:44:56.20 3.0 undecidable manual Sn -0.6 0
IV.IOCA.HHZ. 2019-09-20T22:44:28.47 3.0 negative manual Pg 10.34 0
IV.FIR.HHZ. 2019-09-20T22:44:24.93 3.0 undecidable manual Sn -2.59 0
IV.SAMA.HHZ. 2019-09-20T22:44:18.08 3.0 undecidable manual Sg 1.26 0
IV.VITU.HHZ. 2019-09-20T22:44:18.23 3.0 undecidable manual Pn 1.24 0
IV.PTRJ.HHZ. 2019-09-20T22:44:16.70 3.0 undecidable manual Pn 2.21 0
IV.CRMI.HHZ. 2019-09-20T22:44:13.08 3.0 undecidable manual Pn 2.59 0
IV.TERO.HHZ. 2019-09-20T22:44:10.07 3.0 undecidable manual Sn 0.92 0
IV.MF5.EHZ. 2019-09-20T22:44:09.94 0.1 undecidable manual S 96 0.4973 50 0.28 87
IV.EL6.EHZ. 2019-09-20T22:44:05.86 0.1 undecidable manual S 38 0.3732 50 -0.12 93
IV.CSP1.EHZ. 2019-09-20T22:44:03.80 0.1 undecidable manual S 80 0.313 102 -0.19 92
IV.RDP.HHZ. 2019-09-20T22:44:03.90 3.0 positive manual Pg 1.48 0
IV.MF5.EHZ. 2019-09-20T22:44:02.43 1.0 undecidable manual P 96 0.4973 50 0.38 21
IV.LAV9.HHZ. 2019-09-20T22:44:01.05 3.0 negative manual P -2.42 0
IV.SNTG.HHE. 2019-09-20T22:44:01.49 0.3 undecidable manual S 28 0.2455 105 0.01 73
IV.FDMO.HHZ. 2019-09-20T22:44:00.54 0.1 undecidable manual S 90 0.2221 107 -0.07 96
IV.FEMA.HNE. 2019-09-20T22:44:00.44 0.1 undecidable manual S 111 0.2095 108 0.31 92
IV.EL6.EHZ. 2019-09-20T22:43:59.42 0.6 undecidable manual P 38 0.3732 50 -0.5 43
IV.ATCC.EHZ. 2019-09-20T22:43:59.50 0.1 undecidable manual S 325 0.1808 110 0.42 90
IV.CSP1.EHZ. 2019-09-20T22:43:58.51 1.0 undecidable manual P 80 0.313 102 -0.27 23
IV.MML1.EHE. 2019-09-20T22:43:58.22 0.1 undecidable manual S 61 0.1574 113 -0.03 98
IV.SNTG.HHE. 2019-09-20T22:43:57.07 0.1 undecidable manual P 28 0.2455 105 -0.26 92
IV.MNTT.EHZ. 2019-09-20T22:43:57.43 3.0 negative manual Pn -0.85 0
IV.FDMO.HHZ. 2019-09-20T22:43:56.65 1.0 positive manual P 90 0.2221 107 -0.18 24
IV.CESI.HHZ. 2019-09-20T22:43:56.10 0.1 undecidable manual S 110 0.0944 125 -0.03 99
IV.MML1.EHE. 2019-09-20T22:43:55.63 0.1 undecidable manual P 61 0.1574 113 0.17 96
IV.ATCC.EHZ. 2019-09-20T22:43:55.92 0.6 negative manual P 325 0.1808 110 -0.03 49
IV.ASSB.HHZ. 2019-09-20T22:43:55.98 0.1 undecidable manual S 273 0.0908 126 -0.04 99
IV.CESI.HHZ. 2019-09-20T22:43:54.34 0.3 negative manual P 110 0.0944 125 0.1 73
IV.FEMA.HNE. 2019-09-20T22:43:54.80 3.0 undecidable manual P 111 0.2095 108 -1.75 0
IV.ASSB.HHZ. 2019-09-20T22:43:54.17 0.1 positive manual P 273 0.0908 126 0 100
IT.FOPC.HGE. 2019-09-20T22:43:53.77 0.3 undecidable manual P 221 0.089 127 -0.38 69
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHE. ML:0.8 0.0001033648 0.1024 AML other m 2019-09-20T22:43:58.23
IV.ASSB.HHN. ML:1 0.00014484995 0.192 AML other m 2019-09-20T22:43:56.17
IV.CESI.HHE. ML:1 0.00013013208 0.2688 AML other m 2019-09-20T22:43:56.35
IV.CESI.HHN. ML:0.7 7.5363005E-5 0.1152 AML other m 2019-09-20T22:43:56.16
IV.CESI.HNE. ML:1 0.000128046945 0.2688 AML other m 2019-09-20T22:43:56.48
IV.CESI.HNN. ML:1 0.00014869346 0.3584 AML other m 2019-09-20T22:43:59.11
IV.ATCC.EHE. ML:0.8 4.3474405E-5 0.1792 AML other m 2019-09-20T22:43:59.76
IV.ATCC.EHN. ML:0.6 3.209846E-5 0.1408 AML other m 2019-09-20T22:44:00.33
IV.FDMO.HHE. ML:0.6 2.47114E-5 0.1792 AML other m 2019-09-20T22:44:00.66
IV.FDMO.HHN. ML:0.8 4.0244715E-5 0.1536 AML other m 2019-09-20T22:44:00.67
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