Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 27-11-2021 and time 19:44:57 (UTC) in region 4 km E Costacciaro (PG)

A magnitude ML 1.1 earthquake occured in region: 4 km E Costacciaro (PG), on

  • 27-11-2021 19:44:57 (UTC)
  • 27-11-2021 20:44:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3680, 12.7560 at 13 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.

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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 4 1216 1216
Sigillo PG 4 2404 3620
Fossato di Vico PG 8 2840 6460
Scheggia e Pascelupo PG 8 1393 7853
Sassoferrato AN 11 7285 15138
Fabriano AN 13 31480 46618
Serra Sant'Abbondio PU 14 1027 47645
Gubbio PG 14 32216 79861
Gualdo Tadino PG 15 15208 95069
Cantiano PU 16 2245 97314
Genga AN 16 1797 99111
Frontone PU 16 1300 100411
Cerreto d'Esi AN 19 3817 104228

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km NE of Perugia (166134 inhabitants)
46 Km N of Foligno (57155 inhabitants)
57 Km SW of Fano (60888 inhabitants)
62 Km S of Pesaro (94582 inhabitants)
68 Km W of Ancona (100861 inhabitants)
71 Km E of Arezzo (99543 inhabitants)
79 Km S of Rimini (147750 inhabitants)
90 Km N of Terni (111501 inhabitants)
95 Km SE of Cesena (96758 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 1.1 2021-11-27
19:44:57		 43.3683 12.7565 13 2021-11-27
19:55:44		 Sala Sismica INGV-Roma 97877851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-27 19:44:57 ± 0.06
Latitude 43.3683 ± 0.0018
Longitude 12.7565 ± 0.0037
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97877851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 287
Semi-minor axis of confidence ellipse (meter) 130
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 78
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
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) 0.07015
Epicentral distance of station farthest from the epicenter (degree) 0.41009
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 97877851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-27 19:55:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2021-11-27T19:45:10.06 0.3 undecidable manual S 192 36.9297 96 0.01 71
IV.ATVO.HHZ. 2021-11-27T19:45:07.59 0.3 undecidable manual S 273 28.2495 99 -0.14 70
IV.ATLO.EHZ. 2021-11-27T19:45:07.82 0.3 undecidable manual S 258 28.749 98 -0.06 72
IV.MURB.HHZ. 2021-11-27T19:45:06.56 0.3 undecidable manual S 238 22.0668 103 0.45 67
IV.ATCC.EHZ. 2021-11-27T19:45:06.32 0.3 undecidable manual S 205 22.3554 103 0.12 72
IV.PIEI.HHZ. 2021-11-27T19:45:06.96 0.3 undecidable manual S 316 25.752 100 -0.12 71
IV.ARVD.HHZ. 2021-11-27T19:45:05.92 0.3 undecidable manual S 46 20.7681 105 0.15 71
IV.FDMO.HHZ. 2021-11-27T19:45:05.97 0.3 undecidable manual P 144 45.5211 94 -0.17 69
IV.ASSB.HHZ. 2021-11-27T19:45:04.62 0.1 undecidable manual P 192 36.9297 96 -0.21 92
IV.FRON.EHZ. 2021-11-27T19:45:04.78 0.3 undecidable manual S 352 16.7721 112 0.01 74
IV.ATLO.EHZ. 2021-11-27T19:45:03.56 0.1 undecidable manual P 258 28.749 98 -0.01 97
IV.ATVO.HHZ. 2021-11-27T19:45:03.41 0.3 undecidable manual P 273 28.2495 99 -0.09 72
IV.PIEI.HHZ. 2021-11-27T19:45:02.91 0.1 undecidable manual P 316 25.752 100 -0.21 94
IV.SSFR.HHZ. 2021-11-27T19:45:02.82 0.3 undecidable manual S 15 7.7811 142 -0.03 74
IV.ATSC.EHZ. 2021-11-27T19:45:02.89 0.3 undecidable manual S 318 8.3805 139 -0.05 74
IV.ARVD.HHZ. 2021-11-27T19:45:02.45 0.1 undecidable manual P 46 20.7681 105 0.09 95
IV.FOSV.EHZ. 2021-11-27T19:45:02.77 0.3 undecidable manual S 177 8.1807 140 -0.13 73
IV.MURB.HHZ. 2021-11-27T19:45:02.66 0.1 undecidable manual P 238 22.0668 103 0.1 96
IV.ATCC.EHZ. 2021-11-27T19:45:02.59 0.1 undecidable manual P 205 22.3554 103 -0.01 98
IV.ATBU.EHZ. 2021-11-27T19:45:02.45 0.1 undecidable manual P 305 20.5683 105 0.12 96
IV.FRON.EHZ. 2021-11-27T19:45:01.74 0.1 undecidable manual P 352 16.7721 112 -0.04 99
IV.FOSV.EHZ. 2021-11-27T19:45:00.67 0.1 undecidable manual P 177 8.1807 140 -0.03 100
IV.SSFR.HHZ. 2021-11-27T19:45:00.75 0.1 undecidable manual P 15 7.7811 142 0.08 99
IV.ATSC.EHZ. 2021-11-27T19:45:00.76 0.1 undecidable manual P 318 8.3805 139 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FOSV.EHE. ML:1.1 0.00013450000000000002 0.1 AML other m 2021-11-27T19:45:02.85
IV.FOSV.EHN. ML:1.2 0.0001705 0.08 AML other m 2021-11-27T19:45:02.91
IV.FRON.EHN. ML:1.1 0.00010195 0.3 AML other m 2021-11-27T19:45:05.16
IV.FRON.EHE. ML:1.1 0.00009735 1.64 AML other m 2021-11-27T19:45:05.83
IV.ARVD.HHE. ML:1.0 0.00006505 0.24 AML other m 2021-11-27T19:45:06.02
IV.ARVD.HHN. ML:0.9 0.00005365 0.16 AML other m 2021-11-27T19:45:06.17
IV.ATCC.EHN. ML:1.3 0.00011999999999999999 0.12 AML other m 2021-11-27T19:45:06.44
IV.ATCC.EHE. ML:1.3 0.00011599999999999999 0.12 AML other m 2021-11-27T19:45:06.63
IV.PIEI.HHN. ML:0.8 0.00003295 0.42 AML other m 2021-11-27T19:45:07.11
IV.PIEI.HHE. ML:0.9 0.0000435 0.64 AML other m 2021-11-27T19:45:09.98
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