Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 27-06-2021 and time 05:14:10 (Italy) in region 4 km NE Castel Ritaldi (PG)

A magnitude ML 0.7 earthquake occured in region: 4 km NE Castel Ritaldi (PG), on

  • 27-06-2021 03:14:10 (UTC)
  • 27-06-2021 05:14:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8450, 12.7090 at 8 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Castel Ritaldi PG 4 3278 3278
Trevi PG 5 8469 11747
Campello sul Clitunno PG 6 2442 14189
Montefalco PG 7 5679 19868
Giano dell'Umbria PG 11 3846 23714
Spoleto PG 12 38218 61932
Foligno PG 13 57155 119087
Bevagna PG 13 5081 124168
Gualdo Cattaneo PG 14 6155 130323
Vallo di Nera PG 15 364 130687
Sant'Anatolia di Narco PG 16 564 131251
Spello PG 17 8645 139896
Massa Martana PG 17 3770 143666
Cerreto di Spoleto PG 17 1075 144741
Scheggino PG 18 461 145202
Sellano PG 19 1079 146281
Cannara PG 20 4305 150586

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km S of Foligno (57155 inhabitants)
32 Km N of Terni (111501 inhabitants)
39 Km SE of Perugia (166134 inhabitants)
68 Km NE of Viterbo (67173 inhabitants)
79 Km NW of L'Aquila (69753 inhabitants)
84 Km W of Teramo (54892 inhabitants)
94 Km N of Guidonia Montecelio (88673 inhabitants)
96 Km SE of Arezzo (99543 inhabitants)
98 Km N of Tivoli (56533 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
Bulletin
Rev1000 		ML 0.7 2021-06-27
03:14:10		 42.8447 12.7092 9 2021-12-29
11:12:35		 Bollettino Sismico Italiano INGV 96323401
Reviewed
Rev100 		ML 0.7 2021-06-27
03:14:10		 42.8488 12.6905 11 2021-06-27
03:32:18		 Sala Sismica INGV-Roma 91946971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-27 03:14:10 ± 0.06
Latitude 42.8447 ± 0.0027
Longitude 12.7092 ± 0.0061
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96323401

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 408
Semi-minor axis of confidence ellipse (meter) 334
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 254
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.10972
Epicentral distance of station farthest from the epicenter (degree) 0.56298
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.1
Num. used stations 12
Type of magnitude ML
Reference to an origin 96323401
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-07 15:22:10

ML:0.7

Field Value
Value 0.7
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 91946971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-06-27 03:32:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-06-27T03:14:30.49 0.3 undecidable manual S 30 62.493 50 0.28 66
IV.CSP1.EHZ. 2021-06-27T03:14:26.43 0.3 undecidable manual S 56 48.7179 50 -0.1 71
IV.NRCA.HHZ. 2021-06-27T03:14:22.38 0.6 undecidable manual S 92 32.9448 104 0.06 49
IV.EL6.EHZ. 2021-06-27T03:14:21.71 0.1 undecidable manual P 30 62.493 50 -0.17 91
IV.CESX.HHZ. 2021-06-27T03:14:20.57 1.0 undecidable manual S 201 28.0497 107 -0.1 25
IV.CSP1.EHZ. 2021-06-27T03:14:19.74 0.1 undecidable manual P 56 48.7179 50 -0.02 96
IV.GAVE.HNZ. 2021-06-27T03:14:19.02 0.3 undecidable manual S 138 22.6551 111 0.12 74
IV.CESI.HHZ. 2021-06-27T03:14:19.01 0.6 undecidable manual S 42 23.8539 110 -0.28 47
IV.ASSB.HHZ. 2021-06-27T03:14:18.96 0.6 undecidable manual S 349 22.3554 111 0.16 49
IV.NRCA.HHZ. 2021-06-27T03:14:17.51 0.6 undecidable manual P 92 32.9448 104 0.18 48
IV.CESX.HHZ. 2021-06-27T03:14:16.02 0.1 undecidable manual P 201 28.0497 107 -0.35 93
IV.ASSB.HHZ. 2021-06-27T03:14:15.27 0.1 negative manual P 349 22.3554 111 -0.03 100
IV.CESI.HHZ. 2021-06-27T03:14:15.49 0.6 undecidable manual P 42 23.8539 110 -0.09 49
IV.MOMA.HHZ. 2021-06-27T03:14:15.82 0.6 undecidable manual S 248 12.1767 125 0.16 50
IV.GAVE.HNZ. 2021-06-27T03:14:15.50 0.1 undecidable manual P 138 22.6551 111 0.15 98
IV.MOMA.HHZ. 2021-06-27T03:14:13.73 0.6 positive manual P 248 12.1767 125 0.25 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHE. ML:0.7 0.00005955 0.48 AML other m 2021-06-27T03:14:17.82
IV.ASSB.HHE. ML:0.6 0.0000279 0.18 AML other m 2021-06-27T03:14:19.02
IV.CESI.HHN. ML:0.8 0.000040050000000000004 0.22 AML other m 2021-06-27T03:14:19.27
IV.ASSB.HHN. ML:0.6 0.000026899384999999998 0.16 AML other m 2021-06-27T03:14:19.12
IV.CESI.HHE. ML:0.6 0.000026500000000000004 0.12 AML other m 2021-06-27T03:14:19.47
IV.MOMA.HHN. ML:0.6 0.000043299999999999995 0.22 AML other m 2021-06-27T03:14:19.54
IV.CESX.HHN. ML:0.6 0.000021900000000000004 0.88 AML other m 2021-06-27T03:14:20.90
IV.CESX.HHE. ML:0.7 0.000025182320000000003 0.32 AML other m 2021-06-27T03:14:21.73
IV.NRCA.HHE. ML:0.5 0.00001635 1.04 AML other m 2021-06-27T03:14:24.46
IV.NRCA.HHN. ML:0.5 0.0000159 0.42 AML other m 2021-06-27T03:14:25.20
IV.MOMA.HNE. ML:0.8 0.000076573355 0.4 AML other m 2021-06-27T03:14:16.14
IV.CSP1.EHE. ML:0.9 0.000019725485000000002 0.2592 AML other m 2021-06-27T03:14:27.75
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