Earthquake with magnitude of ML 0.5 on date 27-08-2020 and time 01:41:00 (Italy) in region 8 km E Città di Castello (PG)

A magnitude ML 0.5 earthquake occured in region: 8 km E Città di Castello (PG), on

  • 26-08-2020 23:41:00 (UTC)
  • 27-08-2020 01:41:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.44, 12.33 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
Città di Castello PG 8 39913 39913
Montone PG 8 1680 41593
Pietralunga PG 9 2111 43704
Monte Santa Maria Tiberina PG 13 1183 44887
Umbertide PG 15 16681 61568
Apecchio PU 15 1882 63450
San Giustino PG 17 11297 74747
Monterchi AR 18 1757 76504
Citerna PG 18 3531 80035

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Arezzo (99543 inhabitants)
37 Km N of Perugia (166134 inhabitants)
62 Km NW of Foligno (57155 inhabitants)
71 Km SW of Pesaro (94582 inhabitants)
72 Km SW of Fano (60888 inhabitants)
72 Km S of Rimini (147750 inhabitants)
78 Km S of Cesena (96758 inhabitants)
82 Km E of Siena (53903 inhabitants)
90 Km S of Forlì (117913 inhabitants)
94 Km E of Firenze (382808 inhabitants)
98 Km W of Ancona (100861 inhabitants)
99 Km E of Scandicci (50609 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 0.5 2020-08-26
23:41:00
43.44 12.33 10 2020-08-26
23:49:08
Sala Sismica INGV-Roma 82356441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-26 23:41:00 ± 0.05
Latitude 43.44 ± 0.00
Longitude 12.33 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82356441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 282
Semi-minor axis of confidence ellipse (meter) 237
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) 280
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.05486
Epicentral distance of station farthest from the epicenter (degree) 0.25091
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 82356441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-26 23:49:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MURB.HHZ. 2020-08-26T23:41:09.75 0.6 undecidable manual S 141 0.2266 50 0.27 46
IV.NARO.HHZ. 2020-08-26T23:41:09.93 0.1 undecidable manual S 47 0.2509 50 -0.27 92
IV.PARC.HHZ. 2020-08-26T23:41:09.23 0.1 undecidable manual S 343 0.2194 113 -0.05 97
IV.PIEI.HHZ. 2020-08-26T23:41:07.87 0.3 undecidable manual S 57 0.1781 117 0.03 73
IV.APEC.HNZ. 2020-08-26T23:41:06.54 0.1 undecidable manual S 29 0.1367 124 0.09 98
IV.ATLO.EHZ. 2020-08-26T23:41:06.31 0.1 undecidable manual S 155 0.1367 124 -0.13 97
IV.BADI.EHZ. 2020-08-26T23:41:05.06 0.1 undecidable manual S 319 0.0935 134 -0.1 98
IV.NARO.HHZ. 2020-08-26T23:41:05.78 0.1 undecidable manual P 47 0.2509 50 -0.16 94
IV.PARC.HHZ. 2020-08-26T23:41:05.55 0.1 undecidable manual P 343 0.2194 113 0.14 95
IV.ATMI.HHZ. 2020-08-26T23:41:05.68 0.1 undecidable manual S 203 0.1133 129 -0.06 98
IV.MURB.HHZ. 2020-08-26T23:41:05.06 0.3 undecidable manual P 141 0.2266 50 -0.46 66
IV.ATPC.HNZ. 2020-08-26T23:41:05.54 0.1 undecidable manual S 66 0.1016 132 0.14 97
IV.ATMC.EHZ. 2020-08-26T23:41:05.04 0.1 undecidable manual S 275 0.0989 133 -0.27 94
IV.TB02.DHZ.01 2020-08-26T23:41:05.07 0.1 undecidable manual S 139 0.0899 135 0 100
IV.TB03.DHZ.01 2020-08-26T23:41:04.40 0.1 undecidable manual S 122 0.0701 143 -0.17 97
IV.ATVO.HHZ. 2020-08-26T23:41:04.70 0.1 undecidable manual S 135 0.08 139 -0.1 98
IV.PIEI.HHZ. 2020-08-26T23:41:04.64 0.1 undecidable manual P 57 0.1781 117 0.07 97
IV.ATMC.EHZ. 2020-08-26T23:41:03.20 0.1 undecidable manual P 275 0.0989 133 0.09 98
IV.ATVO.HHZ. 2020-08-26T23:41:03.00 0.1 undecidable manual P 135 0.08 139 0.17 97
IV.TB02.DHZ.01 2020-08-26T23:41:03.20 0.1 undecidable manual P 139 0.0899 135 0.23 96
IV.BADI.EHZ. 2020-08-26T23:41:03.16 0.1 undecidable manual P 319 0.0935 134 0.13 98
IV.APEC.HNZ. 2020-08-26T23:41:03.99 0.1 undecidable manual P 29 0.1367 124 0.22 95
IV.ATPI.EHZ. 2020-08-26T23:41:03.71 0.1 undecidable manual S 78 0.0549 149 -0.52 90
IV.ATMI.HHZ. 2020-08-26T23:41:03.55 0.1 undecidable manual P 203 0.1133 129 0.18 96
IV.ATLO.EHZ. 2020-08-26T23:41:03.89 0.1 undecidable manual P 155 0.1367 124 0.12 97
IV.TB01.DHZ.01 2020-08-26T23:41:03.22 0.1 undecidable manual P 126 0.0962 133 0.14 97
IV.ATPC.HNZ. 2020-08-26T23:41:03.37 0.1 undecidable manual P 66 0.1016 132 0.2 96
IV.TB03.DHZ.01 2020-08-26T23:41:02.79 0.1 undecidable manual P 122 0.0701 143 0.1 98
IV.ATPI.EHZ. 2020-08-26T23:41:02.44 0.1 undecidable manual P 78 0.0549 149 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHN. ML:0.6 5.36E-5 0.86 AML other m 2020-08-26T23:41:05.76
IV.ATVO.HHE. ML:0.5 4.295E-5 0.12 AML other m 2020-08-26T23:41:05.94
IV.ATMI.HHN. ML:0.6 4.295E-5 0.44 AML other m 2020-08-26T23:41:05.96
IV.PIEI.HHN. ML:0.4 1.885E-5 0.84 AML other m 2020-08-26T23:41:08.42
IV.PIEI.HHE. ML:0.7 3.375E-5 0.28 AML other m 2020-08-26T23:41:08.47
IV.BADI.EHE. ML:0.5 3.9762655E-5 0.064 AML other m 2020-08-26T23:41:05.34
IV.BADI.EHN. ML:0.4 3.538856E-5 0.128 AML other m 2020-08-26T23:41:05.23
IV.ATMI.HHE. ML:0.4 2.5593425E-5 0.1664 AML other m 2020-08-26T23:41:07.72
IV.NARO.HHE. ML:0.5 1.3099615E-5 0.064 AML other m 2020-08-26T23:41:10.20
IV.NARO.HHN. ML:0.3 8.437814E-6 0.0512 AML other m 2020-08-26T23:41:10.76
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