Earthquake with magnitude of ML 0.6 on date 21-08-2021 and time 14:28:49 (UTC) in region 6 km SW Serra Sant'Abbondio (PU)

A magnitude ML 0.6 earthquake occured in region: 6 km SW Serra Sant'Abbondio (PU), on

  • 21-08-2021 14:28:49 (UTC)
  • 21-08-2021 16:28:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.442, 12.739 at 10 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
Serra Sant'Abbondio PU 6 1027 1027
Scheggia e Pascelupo PG 7 1393 2420
Frontone PU 8 1300 3720
Costacciaro PG 9 1216 4936
Sassoferrato AN 10 7285 12221
Cantiano PU 10 2245 14466
Sigillo PG 12 2404 16870
Cagli PU 14 8731 25601
Pergola PU 16 6333 31934
Genga AN 16 1797 33731
Gubbio PG 16 32216 65947
Fossato di Vico PG 16 2840 68787
Arcevia AN 18 4612 73399
Fabriano AN 18 31480 104879

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km NE of Perugia (166134 inhabitants)
50 Km SW of Fano (60888 inhabitants)
54 Km N of Foligno (57155 inhabitants)
54 Km S of Pesaro (94582 inhabitants)
66 Km W of Ancona (100861 inhabitants)
69 Km E of Arezzo (99543 inhabitants)
70 Km S of Rimini (147750 inhabitants)
87 Km SE of Cesena (96758 inhabitants)
98 Km N of Terni (111501 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.6 2021-08-21
14:28:49
43.4418 12.7392 10 2021-08-21
14:35:08
Sala Sismica INGV-Roma 94464581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-21 14:28:49 ± 0.19
Latitude 43.4418 ± 0.0081
Longitude 12.7392 ± 0.0173
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 94464581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1535
Semi-minor axis of confidence ellipse (meter) 607
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 64
Circular confidence region, given by single value of horizontal uncertainty (meter) 1530
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 181
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.2662
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.4
Num. used stations 12
Type of magnitude ML
Reference to an origin 94464581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-21 14:35:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IX.MNT3.EHZ.02 2021-08-21T14:30:30.94 3.0 undecidable manual Sg 6.85 0
IX.RSF3.HHZ.02 2021-08-21T14:30:28.44 3.0 undecidable manual Sg 5.26 0
IV.EUCT.HNZ. 2021-08-21T14:30:25.27 3.0 undecidable manual Sg 8.76 0
CR.ZAG.BHZ. 2021-08-21T14:30:21.24 3.0 undecidable manual Sg -2.01 0
IV.JOPP.HHZ. 2021-08-21T14:30:20.91 3.0 undecidable manual Pg 6.53 0
IV.SPS2.HHZ. 2021-08-21T14:30:20.80 3.0 undecidable manual Pg 12.39 0
AC.VLO.HHZ. 2021-08-21T14:30:16.03 3.0 undecidable manual Pn -4.21 0
IV.PAOL.HHZ. 2021-08-21T14:30:16.14 3.0 undecidable manual Sg 0.22 0
IV.CMDO.HHZ. 2021-08-21T14:30:15.36 3.0 undecidable manual Pn -7.78 0
AC.PUK.HHZ. 2021-08-21T14:30:07.96 3.0 positive manual Pn -6.32 0
IV.VOBA.EHZ. 2021-08-21T14:30:04.00 3.0 undecidable manual Sn -1.86 0
IV.SACR.HNZ. 2021-08-21T14:29:59.72 3.0 undecidable manual Sn -9.84 0
IV.DGI.HHZ. 2021-08-21T14:29:55.72 3.0 undecidable manual Pg 2.92 0
IV.MTSN.HHZ. 2021-08-21T14:29:50.42 3.0 negative manual Pn -3.36 0
IV.OPPE.HHZ. 2021-08-21T14:29:47.90 3.0 undecidable manual Sn -4.66 0
IT.GNV.HGZ. 2021-08-21T14:29:45.78 3.0 undecidable manual Pg 9.44 0
IV.FVI.HHZ. 2021-08-21T14:29:33.25 3.0 undecidable manual Pn -5.59 0
IV.ZEN8.EHZ. 2021-08-21T14:29:29.07 3.0 undecidable manual Pg -2.33 0
TV.SF04.EHZ. 2021-08-21T14:29:26.65 3.0 undecidable manual S -2.54 0
IV.MGAB.HNZ. 2021-08-21T14:29:18.59 3.0 undecidable manual S -2.11 0
IV.SFI.EHZ. 2021-08-21T14:29:10.05 3.0 undecidable manual S -5.49 0
IV.MURB.HHZ. 2021-08-21T14:29:00.06 0.3 undecidable manual S 221 0.2374 110 0.39 67
IV.ATCC.EHZ. 2021-08-21T14:29:00.87 0.3 undecidable manual S 196 0.2662 50 0.29 67
IV.PIEI.HHZ. 2021-08-21T14:28:57.34 0.3 undecidable manual S 302 0.1754 117 -0.14 72
IV.FOSV.EHZ. 2021-08-21T14:28:56.66 0.3 undecidable manual S 174 0.1475 121 0.12 75
IV.MURB.HHZ. 2021-08-21T14:28:55.49 0.1 undecidable manual P 221 0.2374 110 -0.06 98
IV.ATCC.EHZ. 2021-08-21T14:28:55.74 0.1 undecidable manual P 196 0.2662 50 -0.34 93
IV.PIEI.HHZ. 2021-08-21T14:28:54.10 0.3 undecidable manual P 302 0.1754 117 -0.18 72
IV.FRON.EHZ. 2021-08-21T14:28:54.67 0.1 undecidable manual S 353 0.0764 139 0.26 96
IV.FOSV.EHZ. 2021-08-21T14:28:53.53 0.1 undecidable manual P 174 0.1475 121 -0.21 95
IV.PE3.EHZ. 2021-08-21T14:28:52.19 3.0 negative manual P -1.1 0
IV.FRON.EHZ. 2021-08-21T14:28:52.56 0.1 undecidable manual P 353 0.0764 139 0.04 100
IV.NARO.HHZ. 2021-08-21T14:28:49.53 3.0 undecidable manual P -1.81 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FRON.EHE. ML:0.4 4.17E-5 0.16 AML other m 2021-08-21T14:28:54.78
IV.FRON.EHN. ML:0.4 3.568605E-5 0.064 AML other m 2021-08-21T14:28:55.41
IV.MURB.HHN. ML:1.2 9.3E-5 0.2 AML other m 2021-08-21T14:29:00.50
IV.MURB.HHE. ML:1.3 0.00012235 0.28 AML other m 2021-08-21T14:29:00.76
IV.ATCC.EHE. ML:0.8 3.185E-5 0.88 AML other m 2021-08-21T14:29:00.53
IV.ATCC.EHN. ML:0.7 2.423367E-5 0.096 AML other m 2021-08-21T14:29:01.14
IV.ZEN8.EHE. ML:2.2 2.12E-5 1.04 AML other m 2021-08-21T14:29:56.59
IV.ZEN8.EHN. ML:2.3 2.6922715E-5 0.0576 AML other m 2021-08-21T14:30:22.32
IV.PE3.EHE. ML:0.9 3.7245215E-5 0.0768 AML other m 2021-08-21T14:28:53.41
IV.PE3.EHN. ML:0.9 2.9291203E-5 0.1984 AML other m 2021-08-21T14:28:53.39
IV.FOSV.EHE. ML:0 9.581485E-6 0.1408 AML other m 2021-08-21T14:28:57.21
IV.FOSV.EHN. ML:0 1.0134181E-5 0.1024 AML other m 2021-08-21T14:28:57.94
IV.PIEI.HHE. ML:0.3 1.4854285E-5 0.0832 AML other m 2021-08-21T14:28:57.72
IV.PIEI.HHN. ML:0.1 8.825113E-6 0.064 AML other m 2021-08-21T14:28:57.97
IV.MURB.HNE. ML:1.3 0.0001197103 0.2688 AML other m 2021-08-21T14:29:00.74
IV.MURB.HNN. ML:1.2 8.9936025E-5 0.5888 AML other m 2021-08-21T14:29:10.62
IV.ZEN8.HNE. ML:2.9 0.0001132006 0.6592 AML other m 2021-08-21T14:30:32.91
IV.ZEN8.HNN. ML:3.1 0.000184941 1.1392 AML other m 2021-08-21T14:29:35.03
IV.FVI.HHE. ML:2.4 1.8410375E-5 0.6784 AML other m 2021-08-21T14:29:52.22
IV.FVI.HHN. ML:2.6 3.506978E-5 0.3392 AML other m 2021-08-21T14:29:54.55
IV.MTSN.HNE. ML:3.4 0.000110352385 1.7728 AML other m 2021-08-21T14:30:08.61
IV.MTSN.HNN. ML:3.1 5.3175605E-5 0.8512 AML other m 2021-08-21T14:30:13.30
IV.MTSN.HHE. ML:2.6 1.7758147E-5 0.1024 AML other m 2021-08-21T14:30:42.85
IV.MTSN.HHN. ML:2.7 2.379141E-5 0.1152 AML other m 2021-08-21T14:30:48.03
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