Earthquake with magnitude of ML 2.5 on date 18-04-2024 and time 20:17:19 (Italy) in region 2 km SW Radicofani (SI)

A magnitude ML 2.5 earthquake occured in region: 2 km SW Radicofani (SI), on

  • 18-04-2024 18:17:19 (UTC)
  • 18-04-2024 20:17:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8830, 11.7580 at 5 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
Radicofani SI 2 1097 1097
Abbadia San Salvatore SI 7 6444 7541
Piancastagnaio SI 7 4230 11771
San Casciano dei Bagni SI 10 1632 13403
Castell'Azzara GR 13 1476 14879
Cetona SI 15 2755 17634
Sarteano SI 15 4717 22351
Santa Fiora GR 15 2622 24973
Proceno VT 15 557 25530
Seggiano GR 17 961 26491
Acquapendente VT 18 5506 31997
Castiglione d'Orcia SI 18 2346 34343
Arcidosso GR 18 4285 38628
Castel del Piano GR 18 4690 43318
Allerona TR 19 1794 45112

Municipalities with at least 50000 inhabitants

An earthquake occurred to
54 Km E of Grosseto (82087 inhabitants)
57 Km W of Perugia (166134 inhabitants)
59 Km NW of Viterbo (67173 inhabitants)
60 Km SE of Siena (53903 inhabitants)
66 Km S of Arezzo (99543 inhabitants)
78 Km W of Foligno (57155 inhabitants)
81 Km W of Terni (111501 inhabitants)
88 Km N of Civitavecchia (52991 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 2.5 2024-04-18
18:17:19
42.8833 11.7583 5 2024-04-18
18:28:36
Sala Sismica INGV-Roma 126867871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-04-18 18:17:19 ± 0.08
Latitude 42.8833 ± 0.0054
Longitude 11.7583 ± 0.0061
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 126867871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 660
Semi-minor axis of confidence ellipse (meter) 460
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 333
Circular confidence region, given by single value of horizontal uncertainty (meter) 660.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49
Number of associated phases, regardless of their use for origin computation 50
Number of defining phases 45
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.20509
Number of stations at which the event was observed 36
Number of stations from which data was used for origin computation 31
Magnitude information

ML:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 126867871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-04-18 18:28:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
ST.OZOL.EHZ. 2024-04-18T18:18:22.53 3.0 undecidable manual Pg 7.85 0
IV.IMOL.HNZ. 2024-04-18T18:18:09.16 3.0 undecidable manual S 2.23 0
IV.FIAM.HHZ. 2024-04-18T18:18:01.41 3.0 undecidable manual S 1.55 0
IT.MTCL.HGZ. 2024-04-18T18:17:51.19 3.0 undecidable manual S -0.81 0
IV.PARC.HHZ. 2024-04-18T18:17:49.35 0.3 undecidable manual S 24 93.3399 50 0.88 50
IV.FOSV.EHZ. 2024-04-18T18:17:48.82 0.6 undecidable manual S 60 93.1401 50 0.39 40
IV.ATFO.HHZ. 2024-04-18T18:17:47.32 0.6 undecidable manual S 51 84.8484 50 1.1 31
IV.ATPI.EHZ. 2024-04-18T18:17:45.41 0.6 undecidable manual S 39 81.6516 50 0.04 44
IV.ASSB.HHZ. 2024-04-18T18:17:44.26 0.3 undecidable manual S 76 75.1692 50 0.63 58
IV.ATVO.HHZ. 2024-04-18T18:17:44.41 1.0 undecidable manual S 43 76.2681 50 0.49 20
IV.SMA1.EHZ. 2024-04-18T18:17:42.43 1.0 positive manual P 102 131.4684 50 0.22 19
IV.SEI.HHZ. 2024-04-18T18:17:41.91 1.0 undecidable manual P 346 133.7661 50 -0.66 17
IV.RM33.EHZ. 2024-04-18T18:17:41.21 1.0 undecidable manual P 109 125.7741 50 -0.12 20
IV.CSP1.EHZ. 2024-04-18T18:17:40.81 0.6 negative manual P 78 119.5914 50 0.43 38
IV.ATMI.HHZ. 2024-04-18T18:17:40.52 0.6 undecidable manual S 39 64.8906 50 -0.34 43
IV.FDMO.HHZ. 2024-04-18T18:17:39.49 0.6 negative manual P 81 109.2129 50 0.71 35
IV.RUFI.EHZ. 2024-04-18T18:17:39.03 0.6 undecidable manual P 349 107.8143 50 0.47 38
IV.MML1.EHZ. 2024-04-18T18:17:38.55 0.6 positive manual P 75 101.7204 50 0.93 32
IV.NRCA.HHZ. 2024-04-18T18:17:38.72 0.1 undecidable manual P 92 110.4006 50 -0.24 80
IV.FOSV.EHZ. 2024-04-18T18:17:37.08 0.1 undecidable manual P 60 93.1401 50 0.77 70
IV.PIEI.HHZ. 2024-04-18T18:17:36.87 0.1 undecidable manual P 41 95.8263 50 0.15 84
IV.CESI.HHZ. 2024-04-18T18:17:36.97 1.0 positive manual P 81 94.0392 50 0.53 19
IV.CAFI.HHZ. 2024-04-18T18:17:36.69 0.6 undecidable manual S 19 52.2033 50 -0.81 37
IV.PARC.HHZ. 2024-04-18T18:17:36.00 1.0 positive manual P 24 93.3399 50 -0.33 20
IV.ARRO.EHZ. 2024-04-18T18:17:36.01 0.6 positive manual P 112 88.7445 50 0.38 40
IV.ATFO.HHZ. 2024-04-18T18:17:35.01 0.6 negative manual P 51 84.8484 50 -0.02 44
IV.SRES.HHZ. 2024-04-18T18:17:35.09 3.0 undecidable manual P -1.66 0
IV.ATPI.EHZ. 2024-04-18T18:17:34.34 1.0 negative manual P 39 81.6516 50 -0.19 21
IV.TRIF.CHZ. 2024-04-18T18:17:33.78 1.0 negative manual P 291 73.9704 50 0.43 21
IV.BARO.EHZ. 2024-04-18T18:17:33.18 1.0 undecidable manual P 161 74.4699 50 -0.24 21
IV.ASSB.HHZ. 2024-04-18T18:17:33.31 0.1 undecidable manual P 76 75.1692 50 -0.22 86
IV.CASP.HHZ. 2024-04-18T18:17:33.98 0.3 negative manual P 262 73.371 50 0.72 56
IV.ATVO.HHZ. 2024-04-18T18:17:33.33 0.6 positive manual P 43 76.2681 50 -0.37 42
IV.CSNT.HHZ. 2024-04-18T18:17:32.94 0.6 negative manual P 330 75.5688 50 -0.66 38
IV.FROS.CHZ. 2024-04-18T18:17:31.12 0.1 positive manual P 307 60.7947 50 -0.2 89
IV.ATMI.HHZ. 2024-04-18T18:17:31.02 0.6 undecidable manual P 39 64.8906 50 -0.92 35
IV.LOCA.HHZ. 2024-04-18T18:17:30.82 0.6 positive manual P 320 61.7937 50 -0.65 39
IV.LATE.HHZ. 2024-04-18T18:17:30.37 0.6 undecidable manual S 173 30.1476 99 0.01 49
IV.MGAB.HHZ. 2024-04-18T18:17:29.55 0.3 undecidable manual S 83 28.9488 100 -0.39 68
IV.CAFI.HHZ. 2024-04-18T18:17:29.09 0.3 positive manual P 19 52.2033 50 -0.9 54
IV.ARCI.HHZ. 2024-04-18T18:17:27.36 0.6 undecidable manual S 261 23.2545 102 -0.65 42
IV.MGAB.HHZ. 2024-04-18T18:17:25.06 0.1 negative manual P 83 28.9488 100 -0.57 86
IV.MCIV.CHZ. 2024-04-18T18:17:25.04 0.6 undecidable manual S 210 13.3755 110 0.33 47
IV.LATE.HHZ. 2024-04-18T18:17:25.55 0.1 positive manual P 173 30.1476 99 -0.33 91
IV.ARCI.HHZ. 2024-04-18T18:17:24.52 0.1 positive manual P 261 23.2545 102 0.01 99
IV.SACS.HHZ. 2024-04-18T18:17:23.50 0.6 undecidable manual S 107 12.876 111 -1.04 36
TV.SF11.HHZ. 2024-04-18T18:17:22.93 0.6 undecidable manual S 256 6.6933 127 0.29 48
IV.SACS.HHZ. 2024-04-18T18:17:22.60 0.1 negative manual P 107 12.876 111 0.08 99
IV.MCIV.CHZ. 2024-04-18T18:17:22.64 0.1 positive manual P 210 13.3755 110 0.03 100
TV.SF11.HHZ. 2024-04-18T18:17:21.65 0.1 undecidable manual P 256 6.6933 127 0.23 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCIV.CHN. ML:2.8 0.007209999999999999 0.38 AML other m 2024-04-18T18:17:25.63
IV.MCIV.CHE. ML:2.6 0.00529 0.62 AML other m 2024-04-18T18:17:26.25
IV.SACS.HNE. ML:2.6 0.005195 0.56 AML other m 2024-04-18T18:17:27.02
IV.SACS.HHE. ML:2.6 0.005135 0.56 AML other m 2024-04-18T18:17:27.03
IV.SACS.HNN. ML:2.5 0.0043100000000000005 0.58 AML other m 2024-04-18T18:17:28.43
IV.SACS.HHN. ML:2.5 0.004345 0.58 AML other m 2024-04-18T18:17:28.43
IV.ARCI.HHN. ML:2.6 0.002615 0.26 AML other m 2024-04-18T18:17:28.94
IV.ARCI.HNN. ML:2.6 0.00254 0.26 AML other m 2024-04-18T18:17:28.94
IV.ARCI.HNE. ML:2.5 0.0023650000000000003 0.26 AML other m 2024-04-18T18:17:29.46
IV.ARCI.HHE. ML:2.6 0.002515 0.26 AML other m 2024-04-18T18:17:29.46
IV.MGAB.HNN. ML:2.6 0.002375 0.98 AML other m 2024-04-18T18:17:31.30
IV.MGAB.HHN. ML:2.7 0.0024950000000000003 0.98 AML other m 2024-04-18T18:17:31.30
IV.MGAB.HNE. ML:2.3 0.0011149999999999999 0.36 AML other m 2024-04-18T18:17:31.62
IV.MGAB.HHE. ML:2.4 0.00131 0.8 AML other m 2024-04-18T18:17:31.44
IV.LATE.HHN. ML:2.7 0.00267 0.34 AML other m 2024-04-18T18:17:32.12
IV.LATE.HHE. ML:2.7 0.0027949999999999997 0.24 AML other m 2024-04-18T18:17:33.34
IV.LOCA.HHE. ML:1.6 0.00008015 0.62 AML other m 2024-04-18T18:17:34.13
IV.CAFI.HHE. ML:2.3 0.0004645 0.3 AML other m 2024-04-18T18:17:37.92
IV.CAFI.HHN. ML:2.1 0.0003215 0.16 AML other m 2024-04-18T18:17:38.27
IV.ATMI.HHN. ML:3.0 0.0020150000000000003 1.66 AML other m 2024-04-18T18:17:42.02
IV.ATMI.HHE. ML:3.2 0.00286 0.32 AML other m 2024-04-18T18:17:43.26
IV.CSNT.HHN. ML:1.8 0.0000835 0.42 AML other m 2024-04-18T18:17:44.32
IV.FROS.CHE. ML:2.1 0.000253 0.48 AML other m 2024-04-18T18:17:44.97
IV.ATVO.HHN. ML:2.7 0.0007654999999999999 1.76 AML other m 2024-04-18T18:17:44.89
IV.LOCA.HHN. ML:1.7 0.00009984999999999999 0.62 AML other m 2024-04-18T18:17:45.34
IV.FROS.CHN. ML:1.9 0.00017749999999999998 1.6 AML other m 2024-04-18T18:17:45.88
IV.MURB.HHE. ML:3.2 0.0023650000000000003 0.32 AML other m 2024-04-18T18:17:45.60
IV.MURB.HHN. ML:3.3 0.0030099999999999997 0.26 AML other m 2024-04-18T18:17:45.77
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
Waveforms Seismic signals in miniseed + resp format Download