Earthquake with magnitude of ML 1.3 on date 28-08-2021 and time 22:19:29 (UTC) in region 2 km NE Costacciaro (PG)

A magnitude ML 1.3 earthquake occured in region: 2 km NE Costacciaro (PG), on

  • 28-08-2021 22:19:29 (UTC)
  • 29-08-2021 00:19:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.369, 12.73 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
Costacciaro PG 2 1216 1216
Sigillo PG 4 2404 3620
Scheggia e Pascelupo PG 6 1393 5013
Fossato di Vico PG 9 2840 7853
Gubbio PG 12 32216 40069
Sassoferrato AN 13 7285 47354
Serra Sant'Abbondio PU 14 1027 48381
Cantiano PU 14 2245 50626
Fabriano AN 15 31480 82106
Gualdo Tadino PG 16 15208 97314
Frontone PU 16 1300 98614
Genga AN 18 1797 100411

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km NE of Perugia (166134 inhabitants)
46 Km N of Foligno (57155 inhabitants)
58 Km SW of Fano (60888 inhabitants)
62 Km S of Pesaro (94582 inhabitants)
69 Km E of Arezzo (99543 inhabitants)
70 Km W of Ancona (100861 inhabitants)
78 Km S of Rimini (147750 inhabitants)
90 Km N of Terni (111501 inhabitants)
94 Km SE of Cesena (96758 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 1.3 2021-08-28
22:19:29
43.369 12.7295 11 2021-08-28
22:23:32
Sala Sismica INGV-Roma 94766311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-28 22:19:29 ± 0.08
Latitude 43.3690 ± 0.0027
Longitude 12.7295 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 94766311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 293
Semi-minor axis of confidence ellipse (meter) 258
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 102
Circular confidence region, given by single value of horizontal uncertainty (meter) 290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.31027
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 94766311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-28 22:23:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MML1.EHZ. 2021-08-28T22:19:41.19 0.1 undecidable manual S 145 0.3103 50 -0.01 99
IV.EL6.EHZ. 2021-08-28T22:19:40.24 0.1 undecidable manual S 98 0.2734 50 0.14 98
IV.MPAG.EHZ. 2021-08-28T22:19:39.85 0.1 undecidable manual S 5 0.2608 50 0.11 98
IV.ATVO.HHZ. 2021-08-28T22:19:38.84 0.1 undecidable manual S 273 0.2347 50 -0.12 99
IV.ATCC.EHZ. 2021-08-28T22:19:38.07 0.1 undecidable manual S 200 0.1952 50 0.29 96
IV.CSP1.EHZ. 2021-08-28T22:19:38.53 3.0 undecidable manual P 0.08 0
IV.FDMO.HHZ. 2021-08-28T22:19:37.96 3.0 negative manual P -0.1 0
IV.MURB.HHZ. 2021-08-28T22:19:37.59 0.1 undecidable manual S 235 0.1826 50 0.17 99
IV.ARVD.HHZ. 2021-08-28T22:19:37.87 0.1 undecidable manual S 50 0.2005 50 -0.09 100
IV.FRON.EHZ. 2021-08-28T22:19:36.56 0.1 undecidable manual S 359 0.1484 123 0.2 99
IV.MPAG.EHZ. 2021-08-28T22:19:35.38 1.0 positive manual P 5 0.2608 50 -0.03 25
IV.EL6.EHZ. 2021-08-28T22:19:35.46 1.0 negative manual P 98 0.2734 50 -0.16 24
IV.ATPI.EHZ. 2021-08-28T22:19:35.16 0.6 positive manual P 289 0.2509 50 -0.09 50
IV.MML1.EHZ. 2021-08-28T22:19:35.85 1.0 undecidable manual P 145 0.3103 50 -0.4 23
IV.ARVD.HHZ. 2021-08-28T22:19:34.24 0.6 negative manual P 50 0.2005 50 -0.14 49
IV.ATVO.HHZ. 2021-08-28T22:19:34.71 1.0 negative manual P 273 0.2347 50 -0.25 24
IV.MURB.HHZ. 2021-08-28T22:19:34.01 0.3 negative manual P 235 0.1826 50 -0.07 76
IV.ATCC.EHZ. 2021-08-28T22:19:34.03 0.1 positive manual P 200 0.1952 50 -0.25 97
IV.FRON.EHZ. 2021-08-28T22:19:33.29 0.6 positive manual P 359 0.1484 123 -0.17 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FRON.EHE. ML:0.9 6.54E-5 0.28 AML other m 2021-08-28T22:19:36.73
IV.FRON.EHN. ML:1 8.01E-5 1.82 AML other m 2021-08-28T22:19:36.05
IV.MURB.HHE. ML:1.6 0.000264 0.28 AML other m 2021-08-28T22:19:38.23
IV.MURB.HHN. ML:1.6 0.0002785 0.24 AML other m 2021-08-28T22:19:38.19
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