Earthquake with magnitude of ML 1.8 on date 28-04-2020 and time 23:19:39 (Italy) in region 5 km N Spoleto (PG)

A magnitude ML 1.8 earthquake occured in region: 5 km N Spoleto (PG), on

  • 28-04-2020 21:19:39 (UTC)
  • 28-04-2020 23:19:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.78, 12.75 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
Spoleto PG 5 38218 38218
Campello sul Clitunno PG 5 2442 40660
Castel Ritaldi PG 8 3278 43938
Sant'Anatolia di Narco PG 9 564 44502
Vallo di Nera PG 10 364 44866
Scheggino PG 10 461 45327
Trevi PG 11 8469 53796
Cerreto di Spoleto PG 15 1075 54871
Montefalco PG 15 5679 60550
Giano dell'Umbria PG 15 3846 64396
Poggiodomo PG 17 117 64513
Ferentillo TR 18 1913 66426
Massa Martana PG 18 3770 70196
Acquasparta TR 19 4778 74974
Sellano PG 19 1079 76053
Foligno PG 20 57155 133208

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km S of Foligno (57155 inhabitants)
26 Km NE of Terni (111501 inhabitants)
47 Km SE of Perugia (166134 inhabitants)
66 Km NE of Viterbo (67173 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
80 Km W of Teramo (54892 inhabitants)
87 Km N of Guidonia Montecelio (88673 inhabitants)
91 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 1.8 2020-04-28
21:19:39
42.78 12.75 11 2020-04-28
21:25:34
Sala Sismica INGV-Roma 78653711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-28 21:19:39 ± 0.06
Latitude 42.78 ± 0.00
Longitude 12.75 ± 0.01
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 78653711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 607
Semi-minor axis of confidence ellipse (meter) 326
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 302
Circular confidence region, given by single value of horizontal uncertainty (meter) 610
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.50902
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 36
Type of magnitude ML
Reference to an origin 78653711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-28 21:25:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PTRJ.HNZ. 2020-04-28T21:20:41.09 3.0 undecidable manual Sg 3.97 0
IV.VENT.EHZ. 2020-04-28T21:20:36.89 3.0 undecidable manual Sn -3.03 0
IV.ROSPO.HHZ. 2020-04-28T21:20:35.97 3.0 undecidable manual Sg 4.69 0
IV.CPGN.EHZ. 2020-04-28T21:20:14.39 3.0 undecidable manual S -2 0
IV.MNTT.EHZ. 2020-04-28T21:20:05.26 3.0 undecidable manual S 1.98 0
IV.TERO.HHZ. 2020-04-28T21:20:01.46 3.0 undecidable manual S -0.61 0
IV.EL6.EHZ. 2020-04-28T21:20:01.40 3.0 undecidable manual S 0.29 0
IV.SRES.HHZ. 2020-04-28T21:20:00.85 3.0 undecidable manual S 0.7 0
IV.FIAM.HHZ. 2020-04-28T21:19:59.17 3.0 undecidable manual S -0.82 0
IV.VIVA.HHZ. 2020-04-28T21:19:56.27 3.0 undecidable manual P -3.05 0
IV.CSP1.EHZ. 2020-04-28T21:19:55.79 3.0 undecidable manual S -0.2 0
IV.CERT.HHZ. 2020-04-28T21:19:55.17 3.0 undecidable manual P -0.74 0
IV.MNTT.EHZ. 2020-04-28T21:19:53.48 3.0 negative manual P 0.78 0
IV.ARVD.HHZ. 2020-04-28T21:19:53.71 3.0 negative manual P -0.15 0
IV.TERO.HHZ. 2020-04-28T21:19:52.02 3.0 undecidable manual P 0 0
IV.MMUR.HNZ. 2020-04-28T21:19:51.93 3.0 positive manual P -1.07 0
IV.MF5.EHZ. 2020-04-28T21:19:50.61 3.0 undecidable manual P 0.16 0
IV.FIAM.HHZ. 2020-04-28T21:19:50.49 3.0 positive manual P -0.36 0
IV.GUMA.HHZ. 2020-04-28T21:19:49.94 3.0 undecidable manual P 0.32 0
IV.MGAB.HHZ. 2020-04-28T21:19:49.64 3.0 negative manual P -0.02 0
IV.SNTG.HHZ. 2020-04-28T21:19:49.35 0.3 undecidable manual P 17 0.4955 90 0.22 68
IV.MMO1.EHZ. 2020-04-28T21:19:48.16 3.0 negative manual P -0.04 0
IV.MURB.HHZ. 2020-04-28T21:19:48.99 1.0 undecidable manual P 342 0.509 90 -0.36 21
IV.RM33.EHZ. 2020-04-28T21:19:48.04 3.0 positive manual P -0.09 0
IV.SMA1.EHZ. 2020-04-28T21:19:48.60 3.0 negative manual P 0.14 0
IV.T1299.EHE. 2020-04-28T21:19:47.86 0.1 undecidable manual P 110 0.42 90 0.02 94
IV.CESX.HHZ. 2020-04-28T21:19:47.76 0.6 undecidable manual S 214 0.2077 90 -0.08 48
IV.ARRO.EHZ. 2020-04-28T21:19:47.83 0.6 undecidable manual S 176 0.2014 90 0.17 49
IV.ATCC.EHZ. 2020-04-28T21:19:47.93 3.0 positive manual Pg -0.15 0
IV.FDMO.HHZ. 2020-04-28T21:19:46.75 0.6 negative manual P 44 0.3579 90 -0.03 47
IV.MC2.EHZ. 2020-04-28T21:19:46.73 3.0 negative manual P 0.22 0
IV.MOMA.HHZ. 2020-04-28T21:19:45.34 0.6 undecidable manual S 280 0.1304 92 -0.22 49
IV.CESI.HHZ. 2020-04-28T21:19:45.00 0.1 positive manual P 27 0.2527 90 0.02 98
IT.GNU.HGZ. 2020-04-28T21:19:45.84 0.6 undecidable manual S 280 0.1304 92 0.28 47
IV.NRCA.HHZ. 2020-04-28T21:19:45.22 0.1 negative manual P 79 0.2752 90 -0.15 94
IV.ARRO.EHZ. 2020-04-28T21:19:44.08 0.3 positive manual P 176 0.2014 90 -0.02 73
IV.CESX.HHZ. 2020-04-28T21:19:44.15 0.3 undecidable manual P 214 0.2077 90 -0.05 73
IT.GNU.HGZ. 2020-04-28T21:19:42.92 0.3 undecidable manual P 280 0.1304 92 0.03 75
IV.MOMA.HHZ. 2020-04-28T21:19:42.89 0.1 negative manual P 280 0.1304 92 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HNN. ML:2.3 0.001805 0.16 AML other m 2020-04-28T21:19:45.82
IV.MOMA.HHN. ML:2.3 0.001785 0.18 AML other m 2020-04-28T21:19:45.81
IV.MOMA.HHE. ML:2.5 0.003045 1.76 AML other m 2020-04-28T21:19:46.01
IV.MOMA.HNE. ML:2.5 0.00285 1.74 AML other m 2020-04-28T21:19:46.02
IV.ARRO.EHE. ML:1.6 0.0002765 0.28 AML other m 2020-04-28T21:19:48.06
IV.CESX.HHE. ML:1.8 0.0004245 0.64 AML other m 2020-04-28T21:19:49.26
IV.ARRO.EHN. ML:1.6 0.0002735 0.7 AML other m 2020-04-28T21:19:49.34
IV.CESI.HHE. ML:1.8 0.000346 0.32 AML other m 2020-04-28T21:19:49.66
IV.CESI.HNE. ML:1.8 0.000353 0.34 AML other m 2020-04-28T21:19:49.50
IV.CESX.HHN. ML:2.1 0.0007855 0.4 AML other m 2020-04-28T21:19:49.54
IV.CESI.HHN. ML:2 0.000528 0.12 AML other m 2020-04-28T21:19:49.96
IV.CESI.HNN. ML:2 0.000526 0.74 AML other m 2020-04-28T21:19:49.96
IV.NRCA.HHE. ML:2 0.0005275 0.14 AML other m 2020-04-28T21:19:51.08
IV.NRCA.HHN. ML:1.9 0.0003355 1.2 AML other m 2020-04-28T21:19:51.26
IV.FDMO.HHE. ML:1.8 0.000244 0.86 AML other m 2020-04-28T21:19:53.30
IV.FDMO.HHN. ML:1.7 0.000181 1.22 AML other m 2020-04-28T21:19:53.75
IV.ATCC.EHE. ML:2 0.0002615 0.14 AML other m 2020-04-28T21:19:55.80
IV.RM33.EHN. ML:1.7 0.0001286 0.78 AML other m 2020-04-28T21:19:55.87
IV.CSP1.EHN. ML:2 0.000273 1.32 AML other m 2020-04-28T21:19:56.04
IV.CSP1.EHE. ML:2 0.0002475 0.64 AML other m 2020-04-28T21:19:56.40
IV.ATCC.EHN. ML:1.8 0.0002045 0.96 AML other m 2020-04-28T21:19:56.63
IV.RM33.EHE. ML:1.8 0.000174 0.42 AML other m 2020-04-28T21:19:57.69
IV.SMA1.EHN. ML:1.8 0.0001525 0.3 AML other m 2020-04-28T21:19:57.82
IV.SMA1.EHE. ML:2 0.000226 0.8 AML other m 2020-04-28T21:19:58.53
IV.GUMA.HHE. ML:1.9 0.000186 0.24 AML other m 2020-04-28T21:19:58.57
IV.MURB.HHE. ML:2.3 0.000461 0.98 AML other m 2020-04-28T21:19:58.29
IV.SNTG.HHE. ML:1.4 6.23E-5 0.12 AML other m 2020-04-28T21:19:58.73
IV.MGAB.HNE. ML:1.8 0.0001405 0.54 AML other m 2020-04-28T21:19:58.84
IV.MGAB.HHE. ML:1.8 0.000149 0.54 AML other m 2020-04-28T21:19:58.84
IV.SNTG.HHN. ML:1.4 5.915E-5 1.24 AML other m 2020-04-28T21:19:59.68
IV.MURB.HHN. ML:2.4 0.000599 1.02 AML other m 2020-04-28T21:20:00.63
IV.SRES.HHE. ML:1.4 4.605E-5 0.46 AML other m 2020-04-28T21:20:00.92
IV.GUMA.HHN. ML:1.8 0.000155 1.36 AML other m 2020-04-28T21:20:00.17
IV.SRES.HHN. ML:1.4 4.53E-5 1.64 AML other m 2020-04-28T21:20:01.84
IV.EL6.EHE. ML:2 0.000177 0.8 AML other m 2020-04-28T21:20:01.47
IV.MGAB.HNN. ML:1.8 0.000157 0.48 AML other m 2020-04-28T21:20:02.03
IV.MGAB.HHN. ML:1.8 0.000162 0.46 AML other m 2020-04-28T21:20:02.03
IV.TERO.HHN. ML:1.4 4.18E-5 1.14 AML other m 2020-04-28T21:20:02.76
IV.EL6.EHN. ML:2 0.0001555 1.34 AML other m 2020-04-28T21:20:02.85
IV.FIAM.HHN. ML:1.2 2.9E-5 0.9 AML other m 2020-04-28T21:20:04.37
IV.ARVD.HHE. ML:1.3 2.545E-5 0.28 AML other m 2020-04-28T21:20:05.76
IV.TERO.HHE. ML:1.4 4.025E-5 1.08 AML other m 2020-04-28T21:20:05.88
IV.ARVD.HHN. ML:1.3 2.5E-5 0.54 AML other m 2020-04-28T21:20:06.48
IV.FIAM.HHE. ML:1.2 2.76E-5 0.42 AML other m 2020-04-28T21:20:07.98
IV.MNTT.EHE. ML:2.1 0.00017 1.6 AML other m 2020-04-28T21:20:07.16
IV.CERT.HHN. ML:1.4 2.775E-5 0.42 AML other m 2020-04-28T21:20:08.88
IV.MNTT.EHN. ML:2 0.0001515 0.3 AML other m 2020-04-28T21:20:10.70
IV.CERT.HHE. ML:1.4 3.05E-5 0.44 AML other m 2020-04-28T21:20:17.79
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