Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 12-08-2022 and time 12:21:45 (Italy) in region 4 km E Castel Ritaldi (PG)

A magnitude ML 1.4 earthquake occured in region: 4 km E Castel Ritaldi (PG), on

  • 12-08-2022 10:21:45 (UTC)
  • 12-08-2022 12:21:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8240, 12.7230 at 9 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
Castel Ritaldi PG 4 3278 3278
Campello sul Clitunno PG 5 2442 5720
Trevi PG 6 8469 14189
Montefalco PG 10 5679 19868
Spoleto PG 10 38218 58086
Giano dell'Umbria PG 12 3846 61932
Vallo di Nera PG 13 364 62296
Sant'Anatolia di Narco PG 14 564 62860
Foligno PG 15 57155 120015
Scheggino PG 15 461 120476
Bevagna PG 15 5081 125557
Cerreto di Spoleto PG 16 1075 126632
Gualdo Cattaneo PG 17 6155 132787
Massa Martana PG 17 3770 136557
Sellano PG 18 1079 137636
Spello PG 19 8645 146281

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km S of Foligno (57155 inhabitants)
30 Km N of Terni (111501 inhabitants)
42 Km SE of Perugia (166134 inhabitants)
68 Km NE of Viterbo (67173 inhabitants)
76 Km NW of L'Aquila (69753 inhabitants)
82 Km W of Teramo (54892 inhabitants)
92 Km N of Guidonia Montecelio (88673 inhabitants)
96 Km N of Tivoli (56533 inhabitants)
99 Km SE of Arezzo (99543 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 1.4 2022-08-12
10:21:45		 42.8243 12.7228 9 2022-08-12
10:33:06		 Sala Sismica INGV-Roma 108443691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-08-12 10:21:45 ± 0.07
Latitude 42.8243 ± 0.0045
Longitude 12.7228 ± 0.0074
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 108443691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 619
Semi-minor axis of confidence ellipse (meter) 428
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 286
Circular confidence region, given by single value of horizontal uncertainty (meter) 620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.57557
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 108443691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-08-12 10:33:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
CH.BERNI.HHZ. 2022-08-12T10:23:35.32 3.0 undecidable manual Sn -0.38 0
AC.VLO.HHZ. 2022-08-12T10:23:24.84 3.0 undecidable manual Pg 16.709999 0
GU.GORR.HHZ. 2022-08-12T10:23:20.97 3.0 undecidable manual Sg 9.92 0
GU.RORO.HHZ. 2022-08-12T10:22:55.25 3.0 undecidable manual Pg 14.03 0
ST.CARE.HNZ. 2022-08-12T10:22:55.71 3.0 undecidable manual Pg 11.11 0
OX.VARN.HHZ. 2022-08-12T10:22:43.56 3.0 positive manual Pg 8.36 0
IV.LRP.EHZ. 2022-08-12T10:22:25.51 3.0 undecidable manual S -3.4 0
IV.MOCL.EHZ. 2022-08-12T10:22:14.01 3.0 undecidable manual Pn 0.25 0
IV.RIBO.EHZ.01 2022-08-12T10:22:08.29 3.0 undecidable manual P -0.17 0
IV.EL6.EHZ. 2022-08-12T10:22:05.69 1.0 undecidable manual S 29 63.8916 50 0.6 20
IV.FRON.EHZ. 2022-08-12T10:22:00.14 3.0 negative manual P 1 0
IV.FDMO.HHZ. 2022-08-12T10:21:58.02 0.3 undecidable manual S 51 37.8288 50 -0.12 72
IV.MF5.EHZ. 2022-08-12T10:21:57.14 0.1 undecidable manual P 73 62.5929 50 0.7 78
IV.EL6.EHZ. 2022-08-12T10:21:56.62 0.3 undecidable manual P 29 63.8916 50 -0.02 70
IV.NRCA.HHZ. 2022-08-12T10:21:56.41 0.3 undecidable manual S 88 31.8459 50 -0.14 73
IV.MGAB.HHZ. 2022-08-12T10:21:56.24 3.0 positive manual P 1.26 0
IV.CESI.HHZ. 2022-08-12T10:21:54.23 0.3 undecidable manual S 36 24.8529 110 -0.02 75
IV.MURB.HHZ. 2022-08-12T10:21:54.84 0.3 undecidable manual P 342 51.2154 50 0.15 70
IV.CESX.HHZ. 2022-08-12T10:21:54.51 0.3 undecidable manual S 205 26.3514 109 -0.24 72
IV.ASSB.HHZ. 2022-08-12T10:21:54.13 0.3 undecidable manual S 348 24.753 110 -0.08 75
IV.FDMO.HHZ. 2022-08-12T10:21:52.42 0.1 undecidable manual P 51 37.8288 50 -0.2 95
IV.ATCC.EHZ. 2022-08-12T10:21:52.83 0.1 undecidable manual P 350 40.5261 50 -0.22 94
IV.NRCA.HHZ. 2022-08-12T10:21:51.54 0.1 negative manual P 88 31.8459 50 -0.17 96
IV.ASSB.HHZ. 2022-08-12T10:21:50.26 0.1 undecidable manual P 348 24.753 110 -0.09 99
IV.CESI.HHZ. 2022-08-12T10:21:50.43 0.1 undecidable manual P 36 24.8529 110 0.05 100
IV.MOMA.HHZ. 2022-08-12T10:21:50.45 0.3 undecidable manual S 260 12.6762 125 0.01 77
IV.CESX.HHZ. 2022-08-12T10:21:50.77 0.3 undecidable manual P 205 26.3514 109 0.1 74
IV.MOMA.HHZ. 2022-08-12T10:21:48.36 0.1 negative manual P 260 12.6762 125 0.18 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HNN. ML:1.4 0.000257 0.6 AML other m 2022-08-12T10:21:51.53
IV.MOMA.HHE. ML:1.5 0.000338 0.14 AML other m 2022-08-12T10:21:51.56
IV.MOMA.HNE. ML:1.5 0.0003325 0.14 AML other m 2022-08-12T10:21:51.57
IV.MOMA.HHN. ML:1.3 0.000245 0.46 AML other m 2022-08-12T10:21:51.84
IV.CESI.HHE. ML:1.4 0.00013350000000000002 0.4 AML other m 2022-08-12T10:21:54.32
IV.CESI.HHN. ML:1.5 0.00017649999999999998 0.1 AML other m 2022-08-12T10:21:54.70
IV.ASSB.HHE. ML:1.3 0.0001116 0.98 AML other m 2022-08-12T10:21:54.85
IV.ASSB.HHN. ML:1.3 0.00011999999999999999 0.96 AML other m 2022-08-12T10:21:55.35
IV.CESX.HHE. ML:1.4 0.0001375 0.34 AML other m 2022-08-12T10:21:55.67
IV.CESX.HHN. ML:1.5 0.00016499999999999997 0.56 AML other m 2022-08-12T10:21:56.63
IV.NRCA.HHN. ML:1.5 0.00014000000000000001 0.14 AML other m 2022-08-12T10:21:57.27
IV.NRCA.HHE. ML:1.5 0.00013800000000000002 1.36 AML other m 2022-08-12T10:21:57.24
IV.FDMO.HHN. ML:1.0 0.000036500000000000006 0.72 AML other m 2022-08-12T10:21:58.30
IV.FDMO.HHE. ML:1.1 0.0000511 0.46 AML other m 2022-08-12T10:21:59.20
IV.ATCC.EHE. ML:1.3 0.00007615 0.58 AML other m 2022-08-12T10:22:00.40
IV.ATCC.EHN. ML:1.3 0.0000756 0.58 AML other m 2022-08-12T10:22:02.25
IV.MGAB.HHE. ML:1.1 0.000031049999999999996 1.44 AML other m 2022-08-12T10:22:02.23
IV.MGAB.HHN. ML:1.2 0.000039800000000000005 0.5 AML other m 2022-08-12T10:22:04.17
IV.MURB.HHE. ML:1.6 0.0000995 0.64 AML other m 2022-08-12T10:22:05.68
IV.MURB.HHN. ML:1.6 0.00010165 1.32 AML other m 2022-08-12T10:22:05.70
IV.MOCL.EHE. ML:2.5 0.0001066 0.42 AML other m 2022-08-12T10:22:26.59
IV.MOCL.EHN. ML:2.4 0.00008915000000000001 0.42 AML other m 2022-08-12T10:22:33.83
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