Earthquake with magnitude of ML 1.6 on date 05-09-2021 and time 09:27:52 (UTC) in region 5 km E Massa Martana (PG)

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

  • 05-09-2021 09:27:52 (UTC)
  • 05-09-2021 11:27:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.792, 12.576 at 6 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
Massa Martana PG 5 3770 3770
Giano dell'Umbria PG 5 3846 7616
Castel Ritaldi PG 9 3278 10894
Acquasparta TR 11 4778 15672
Montefalco PG 13 5679 21351
Gualdo Cattaneo PG 13 6155 27506
Todi PG 14 16851 44357
Spoleto PG 15 38218 82575
Collazzone PG 16 3473 86048
Bevagna PG 16 5081 91129
Campello sul Clitunno PG 17 2442 93571
Trevi PG 17 8469 102040
Montecastrilli TR 17 5022 107062
Fratta Todina PG 19 1839 108901
Monte Castello di Vibio PG 19 1567 110468
Avigliano Umbro TR 19 2558 113026
San Gemini TR 20 5018 118044

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km SW of Foligno (57155 inhabitants)
26 Km N of Terni (111501 inhabitants)
38 Km SE of Perugia (166134 inhabitants)
57 Km NE of Viterbo (67173 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
89 Km N of Guidonia Montecelio (88673 inhabitants)
93 Km W of Teramo (54892 inhabitants)
94 Km N of Tivoli (56533 inhabitants)
94 Km SE of Arezzo (99543 inhabitants)
100 Km N of Roma (2864731 inhabitants)
Recent and historical seismicity
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
Reviewed
Rev100
ML 1.6 2021-09-05
09:27:52
42.7915 12.5763 6 2021-09-05
09:46:18
Sala Sismica INGV-Roma 95067161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-05 09:27:52 ± 0.08
Latitude 42.7915 ± 0.0045
Longitude 12.5763 ± 0.0074
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95067161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 602
Semi-minor axis of confidence ellipse (meter) 161
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) 600
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 22
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) 0.53779
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 35
Type of magnitude ML
Reference to an origin 95067161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-05 09:46:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EUCT.HNZ. 2021-09-05T09:29:37.40 3.0 undecidable manual Sg 12.09 0
SL.LJU.BHZ. 2021-09-05T09:29:36.87 3.0 undecidable manual Sg 6.12 0
IV.MGR.HHZ. 2021-09-05T09:29:27.90 3.0 undecidable manual Sn -0.97 0
OX.CIMO.HHZ. 2021-09-05T09:29:26.21 3.0 undecidable manual Sn -2.85 0
IV.SPS2.HHZ. 2021-09-05T09:29:15.42 3.0 negative manual Pg 15.47 0
IV.PAOL.HHZ. 2021-09-05T09:29:04.44 3.0 undecidable manual Sg 4.07 0
IV.IST3.HHZ. 2021-09-05T09:29:01.24 3.0 negative manual Pn 2.21 0
GU.GSCL.HHZ. 2021-09-05T09:28:53.74 3.0 undecidable manual Sn 0.92 0
IV.FREG.EHZ. 2021-09-05T09:28:45.71 3.0 positive manual Pg 4.02 0
IV.MAGA.HHZ. 2021-09-05T09:28:40.93 3.0 undecidable manual Pn -1.07 0
MN.TRI.HHZ. 2021-09-05T09:28:37.61 3.0 negative manual Pn -2.1 0
IV.ATLO.HNE. 2021-09-05T09:28:12.04 0.3 undecidable manual S 347 0.5378 50 0.38 64
IV.SACS.HNZ. 2021-09-05T09:28:11.18 0.6 undecidable manual S 277 0.4919 50 0.87 36
IV.LNSS.HHZ. 2021-09-05T09:28:06.70 0.3 undecidable manual S 119 0.3894 50 -0.57 63
IV.BARO.EHZ. 2021-09-05T09:28:06.89 3.0 undecidable manual P 0
IV.MF5.EHZ. 2021-09-05T09:28:06.48 3.0 negative manual P -0.49 0
IV.EL6.EHZ. 2021-09-05T09:28:05.58 3.0 negative manual P -0.52 0
IV.ATMI.HHZ. 2021-09-05T09:28:04.19 3.0 negative manual P 1.52 0
IV.CESI.HNZ. 2021-09-05T09:28:04.88 0.3 undecidable manual S 48 0.3211 99 0.2 70
IV.ATLO.HNE. 2021-09-05T09:28:03.03 0.3 undecidable manual P 347 0.5378 50 -0.38 64
IV.CSP1.EHZ. 2021-09-05T09:28:03.75 3.0 positive manual P -0.72 0
IV.MURB.HHZ. 2021-09-05T09:28:02.46 3.0 positive manual P 1.11 0
IV.SACS.HNZ. 2021-09-05T09:28:02.66 0.1 undecidable manual P 277 0.4919 50 0.03 93
IV.ASSB.HHZ. 2021-09-05T09:28:02.59 0.3 undecidable manual S 13 0.2581 102 0.3 69
IV.GAVE.EHZ. 2021-09-05T09:28:02.69 0.3 undecidable manual S 113 0.2536 102 0.58 64
IV.ARRO.EHZ. 2021-09-05T09:28:02.59 0.3 undecidable manual S 147 0.2536 102 0.47 67
IV.ATVA.EHE. 2021-09-05T09:28:02.94 0.1 undecidable manual P 337 0.5315 50 -0.36 86
IV.MML1.EHZ. 2021-09-05T09:28:01.58 3.0 positive manual P -0.48 0
IV.FDMO.HHZ. 2021-09-05T09:28:01.46 3.0 positive manual P -1.12 0
IV.MGAB.HHZ. 2021-09-05T09:28:00.25 0.3 undecidable manual P 290 0.3606 98 0 72
IV.LNSS.HHZ. 2021-09-05T09:28:00.45 0.3 undecidable manual P 119 0.3894 50 -0.42 66
IV.ATCC.EHZ. 2021-09-05T09:28:00.72 3.0 positive manual P 0.32 0
IV.CESI.HNZ. 2021-09-05T09:27:59.22 0.3 undecidable manual P 48 0.3211 99 -0.16 70
IV.CESX.HHZ. 2021-09-05T09:27:59.52 0.3 undecidable manual S 178 0.1835 106 0.04 74
IV.ASSB.HHZ. 2021-09-05T09:27:58.12 0.3 undecidable manual P 13 0.2581 102 0.13 72
IV.ARRO.EHZ. 2021-09-05T09:27:57.70 0.3 undecidable manual P 147 0.2536 102 -0.2 71
IV.GAVE.EHZ. 2021-09-05T09:27:57.80 0.3 undecidable manual P 113 0.2536 102 -0.09 72
IV.CESX.HHZ. 2021-09-05T09:27:56.45 0.1 undecidable manual P 178 0.1835 106 0.08 98
IT.GNU.HGZ. 2021-09-05T09:27:53.49 0.1 positive manual P 340 0.0135 166 0.13 100
IV.MOMA.HNZ. 2021-09-05T09:27:53.75 0.6 undecidable manual S 340 0.0135 166 -0.5 46
IT.GNU.HGZ. 2021-09-05T09:27:53.87 0.3 undecidable manual S 340 0.0135 166 -0.38 71
IV.MOMA.HNZ. 2021-09-05T09:27:53.48 0.3 positive manual P 340 0.0135 166 0.12 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHN. ML:0 0.012617615 0.2752 AML other m 2021-09-05T09:27:54.26
IV.MOMA.HNN. ML:0 0.01206311 0.256 AML other m 2021-09-05T09:27:54.26
IV.MOMA.HHE. ML:0 0.02020924 0.1408 AML other m 2021-09-05T09:27:54.22
IV.MOMA.HNE. ML:0 0.01805272 0.1408 AML other m 2021-09-05T09:27:54.22
IV.CESX.HHE. ML:1.6 0.0003078332 0.2816 AML other m 2021-09-05T09:28:00.30
IV.ARRO.EHN. ML:1.4 0.000135496085 0.2048 AML other m 2021-09-05T09:28:03.48
IV.ASSB.HHE. ML:1.4 0.0001472488 0.16 AML other m 2021-09-05T09:28:04.57
IV.ASSB.HHN. ML:1.5 0.00015677795 0.1408 AML other m 2021-09-05T09:28:03.79
IV.GAVE.EHN. ML:1.5 0.0001771571 0.3008 AML other m 2021-09-05T09:28:04.37
IV.ARRO.EHE. ML:1.5 0.00018669875 0.1856 AML other m 2021-09-05T09:28:04.54
IV.CESX.HHN. ML:1.8 0.00046977015 0.2176 AML other m 2021-09-05T09:28:01.28
IV.GAVE.EHE. ML:1.7 0.000272 0.18 AML other m 2021-09-05T09:28:05.63
IV.MGAB.HHE. ML:1.5 0.00010305 0.3 AML other m 2021-09-05T09:28:08.31
IV.MGAB.HHN. ML:1.6 0.00014279135 0.1792 AML other m 2021-09-05T09:28:08.04
IV.ATCC.EHN. ML:1.6 0.0001295 0.3 AML other m 2021-09-05T09:28:09.06
IV.LNSS.HHN. ML:1.6 0.0001352794 0.3008 AML other m 2021-09-05T09:28:10.18
IV.LNSS.HHE. ML:1.7 0.000166 0.16 AML other m 2021-09-05T09:28:09.48
IV.FDMO.HHE. ML:1.4 5.8E-5 1.06 AML other m 2021-09-05T09:28:09.83
IV.FDMO.HHN. ML:1.4 6.965E-5 0.12 AML other m 2021-09-05T09:28:10.58
IV.ATCC.EHE. ML:1.4 8.749079E-5 0.2176 AML other m 2021-09-05T09:28:08.96
IV.MURB.HHE. ML:2.2 0.0004475 1.76 AML other m 2021-09-05T09:28:11.99
IV.MML1.EHE. ML:1.4 7.1E-5 0.68 AML other m 2021-09-05T09:28:12.40
IV.MURB.HHN. ML:2.2 0.000371 0.82 AML other m 2021-09-05T09:28:12.48
IV.MML1.EHN. ML:1.2 4.8521975E-5 0.16 AML other m 2021-09-05T09:28:10.45
IV.ATMI.HHE. ML:1.9 0.0001573126 0.2816 AML other m 2021-09-05T09:28:17.07
IV.ATMI.HHN. ML:1.8 0.0001255 0.36 AML other m 2021-09-05T09:28:19.70
IV.GAVE.HNE. ML:1.7 0.0002500487 0.1792 AML other m 2021-09-05T09:28:05.71
IV.GAVE.HNN. ML:1.1 7.6344066E-5 0.224 AML other m 2021-09-05T09:28:04.20
IV.MGAB.HNN. ML:1.6 0.000132620865 0.1856 AML other m 2021-09-05T09:28:08.35
IV.LNSS.HNE. ML:1.6 0.00013537805 0.1408 AML other m 2021-09-05T09:28:08.40
IV.LNSS.HNN. ML:1.7 0.000143388065 0.2304 AML other m 2021-09-05T09:28:07.49
IV.MURB.HNE. ML:2.2 0.00040195085 0.2496 AML other m 2021-09-05T09:28:13.25
IV.MURB.HNN. ML:2.1 0.0003198057 0.2688 AML other m 2021-09-05T09:28:11.89
IV.CSP1.EHE. ML:1.8 0.0001348377 0.3584 AML other m 2021-09-05T09:28:14.56
IV.CSP1.EHN. ML:1.9 0.000154914 0.2752 AML other m 2021-09-05T09:28:13.65
IV.EL6.EHE. ML:1.8 9.872332E-5 0.2816 AML other m 2021-09-05T09:28:16.94
IV.EL6.EHN. ML:1.7 7.883924E-5 0.2624 AML other m 2021-09-05T09:28:19.08
IV.MF5.EHE. ML:1.3 2.89554E-5 0.2816 AML other m 2021-09-05T09:28:19.46
IV.MF5.EHN. ML:1.4 3.71135735E-5 0.4416 AML other m 2021-09-05T09:28:18.77
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download