Earthquake with magnitude of ML 0.8 on date 21-04-2024 and time 20:00:18 (Italy) in region 4 km NE Castel Ritaldi (PG)

A magnitude ML 0.8 earthquake occured in region: 4 km NE Castel Ritaldi (PG), on

  • 21-04-2024 18:00:18 (UTC)
  • 21-04-2024 20:00:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8480, 12.7150 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
Castel Ritaldi PG 4 3278 3278
Trevi PG 4 8469 11747
Campello sul Clitunno PG 6 2442 14189
Montefalco PG 7 5679 19868
Giano dell'Umbria PG 11 3846 23714
Foligno PG 12 57155 80869
Spoleto PG 13 38218 119087
Bevagna PG 13 5081 124168
Gualdo Cattaneo PG 15 6155 130323
Vallo di Nera PG 15 364 130687
Sant'Anatolia di Narco PG 16 564 131251
Spello PG 17 8645 139896
Cerreto di Spoleto PG 17 1075 140971
Massa Martana PG 18 3770 144741
Scheggino PG 18 461 145202
Sellano PG 18 1079 146281
Cannara PG 20 4305 150586

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km S of Foligno (57155 inhabitants)
32 Km N of Terni (111501 inhabitants)
39 Km SE of Perugia (166134 inhabitants)
69 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)
99 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
Reviewed
Rev100
ML 0.8 2024-04-21
18:00:18
42.8478 12.7152 10 2024-04-21
18:08:47
Sala Sismica INGV-Roma 126945081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-04-21 18:00:18 ± 0.05
Latitude 42.8478 ± 0.0027
Longitude 12.7152 ± 0.0049
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 126945081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 314
Semi-minor axis of confidence ellipse (meter) 284
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 275
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.45056
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 14
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 126945081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-04-21 18:08:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SMA1.EHZ. 2024-04-21T18:00:35.32 3.0 undecidable manual S -0.69 0
IV.CSP1.EHZ. 2024-04-21T18:00:34.39 0.6 undecidable manual S 56 48.1185 50 0.42 44
IV.SNTG.HHZ. 2024-04-21T18:00:34.82 0.6 undecidable manual S 22 48.7179 50 0.68 40
IV.MMO1.EHZ. 2024-04-21T18:00:34.63 0.6 undecidable manual S 83 50.0166 50 0.14 47
IV.LNSS.HHZ. 2024-04-21T18:00:31.40 0.6 undecidable manual S 136 37.9287 50 0.13 48
IV.ATCC.EHZ. 2024-04-21T18:00:31.54 0.6 undecidable manual S 351 37.9287 50 0.29 46
IV.FDMO.HHZ. 2024-04-21T18:00:30.75 0.6 undecidable manual S 55 36.741 50 -0.19 47
IV.NRCA.HHZ. 2024-04-21T18:00:29.89 0.6 undecidable manual S 93 32.5452 50 0.08 49
IV.CESX.HHZ. 2024-04-21T18:00:28.44 0.6 undecidable manual S 202 28.5492 50 -0.31 47
IV.CSP1.EHZ. 2024-04-21T18:00:27.33 0.6 negative manual P 56 48.1185 50 -0.03 48
IV.SNTG.HHZ. 2024-04-21T18:00:27.07 0.1 undecidable manual P 22 48.7179 50 -0.38 88
IV.MMO1.EHZ. 2024-04-21T18:00:27.52 0.1 undecidable manual P 83 50.0166 50 -0.14 93
IV.ASSB.HHZ. 2024-04-21T18:00:26.64 0.6 undecidable manual S 348 22.0668 113 -0.02 50
IV.CESI.HHZ. 2024-04-21T18:00:26.95 0.6 undecidable manual S 41 23.2545 112 -0.09 49
IV.GAVE.EHE. 2024-04-21T18:00:26.92 0.6 undecidable manual S 140 22.5552 113 0.09 49
IV.ATCC.EHZ. 2024-04-21T18:00:25.77 0.1 undecidable manual P 351 37.9287 50 -0.02 97
IV.MML1.EHZ. 2024-04-21T18:00:25.28 0.6 positive manual P 35 36.0417 50 -0.22 47
IV.LNSS.HHZ. 2024-04-21T18:00:25.95 0.1 undecidable manual P 136 37.9287 50 0.15 95
IV.FDMO.HHZ. 2024-04-21T18:00:25.38 0.6 positive manual P 55 36.741 50 -0.23 47
IV.NRCA.HHZ. 2024-04-21T18:00:24.94 1.0 positive manual P 93 32.5452 50 -0.01 25
IV.CESX.HHZ. 2024-04-21T18:00:24.22 0.1 undecidable manual P 202 28.5492 50 -0.13 97
IV.GAVE.EHE. 2024-04-21T18:00:23.22 0.1 undecidable manual P 140 22.5552 113 -0.02 100
IV.ASSB.HHZ. 2024-04-21T18:00:23.04 0.1 undecidable manual P 348 22.0668 113 -0.1 98
IT.GNU.HGN. 2024-04-21T18:00:23.87 0.6 undecidable manual S 248 12.7761 127 0.03 51
IV.CESI.HHZ. 2024-04-21T18:00:23.31 0.1 positive manual P 41 23.2545 112 -0.05 99
IV.MOMA.HHZ. 2024-04-21T18:00:23.85 0.6 undecidable manual S 248 12.7761 127 0 51
IT.GNU.HGN. 2024-04-21T18:00:21.82 0.1 undecidable manual P 248 12.7761 127 0.31 96
IV.MOMA.HHZ. 2024-04-21T18:00:21.55 0.6 undecidable manual P 248 12.7761 127 0.04 51
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHE. ML:1.1 0.000141 0.12 AML other m 2024-04-21T18:00:24.64
IV.MOMA.HHN. ML:1.0 0.0001035 0.12 AML other m 2024-04-21T18:00:25.76
IV.ASSB.HHE. ML:0.9 0.000055199180000000004 0.08 AML other m 2024-04-21T18:00:27.59
IV.ASSB.HHN. ML:0.8 0.00004019901500000001 0.22 AML other m 2024-04-21T18:00:27.04
IV.CESI.HHN. ML:0.8 0.000041779499999999995 0.08 AML other m 2024-04-21T18:00:27.58
IV.NRCA.HHE. ML:0.8 0.000023374449999999998 0.1 AML other m 2024-04-21T18:00:31.74
IV.NRCA.HHN. ML:0.9 0.000034250000000000006 1.14 AML other m 2024-04-21T18:00:30.57
IV.CESI.HHE. ML:0.7 0.000032089975 0.1 AML other m 2024-04-21T18:00:27.76
IV.FDMO.HHE. ML:0.4 0.000011254053999999999 0.16 AML other m 2024-04-21T18:00:31.39
IV.FDMO.HHN. ML:0.6 0.00001331989815 0.18 AML other m 2024-04-21T18:00:32.62
IV.ATCC.EHE. ML:0.8 0.000022757105 0.74 AML other m 2024-04-21T18:00:32.05
IV.ATCC.EHN. ML:0.7 0.000018729518 0.48 AML other m 2024-04-21T18:00:32.03
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