Earthquake with magnitude of ML 1.2 on date 26-07-2024 and time 00:30:20 (UTC) in region 3 km SW San Quirico d'Orcia (SI)

A magnitude ML 1.2 earthquake occured in region: 3 km SW San Quirico d'Orcia (SI), on

  • 26-07-2024 00:30:20 (UTC)
  • 26-07-2024 02:30:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0380, 11.5800 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
San Quirico d'Orcia SI 3 2662 2662
Castiglione d'Orcia SI 5 2346 5008
Montalcino SI 8 5093 10101
Pienza SI 9 2107 12208
Seggiano GR 12 961 13169
San Giovanni d'Asso SI 13 853 14022
Buonconvento SI 14 3173 17195
Castel del Piano GR 16 4690 21885
Montepulciano SI 18 14097 35982
Trequanda SI 18 1254 37236
Arcidosso GR 19 4285 41521
Abbadia San Salvatore SI 19 6444 47965

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km SE of Siena (53903 inhabitants)
49 Km NE of Grosseto (82087 inhabitants)
54 Km SW of Arezzo (99543 inhabitants)
66 Km W of Perugia (166134 inhabitants)
81 Km NW of Viterbo (67173 inhabitants)
86 Km SE of Firenze (382808 inhabitants)
86 Km SE of Scandicci (50609 inhabitants)
92 Km W of Foligno (57155 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 1.2 2024-07-26
00:30:20
43.0383 11.5795 9 2024-07-26
00:41:59
Sala Sismica INGV-Roma 130175671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-07-26 00:30:20 ± 0.16
Latitude 43.0383 ± 0.0072
Longitude 11.5795 ± 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 130175671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 715
Semi-minor axis of confidence ellipse (meter) 610
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 182
Circular confidence region, given by single value of horizontal uncertainty (meter) 720.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.18436
Epicentral distance of station farthest from the epicenter (degree) 0.85436
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 130175671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-07-26 00:41:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PARC.HHZ. 2024-07-26T00:30:47.09 0.3 undecidable manual S 38 86.0472 50 0.95 51
IV.ATPI.EHZ. 2024-07-26T00:30:44.70 0.3 undecidable manual S 55 80.6637 50 0 69
IV.ATMI.HHZ. 2024-07-26T00:30:40.65 0.3 undecidable manual S 59 64.5909 50 0.23 67
IV.OSSC.HHE. 2024-07-26T00:30:38.72 0.3 undecidable manual S 334 60.1953 50 -0.51 64
IV.TRIF.CHZ. 2024-07-26T00:30:38.24 0.3 undecidable manual S 279 55.5 50 0.26 68
IV.PIEI.HHZ. 2024-07-26T00:30:37.16 0.3 undecidable manual P 54 94.8384 50 0.59 58
IV.CSNT.HHZ. 2024-07-26T00:30:36.68 0.3 undecidable manual S 334 53.6019 50 -0.79 58
IV.PARC.HHZ. 2024-07-26T00:30:35.57 0.3 undecidable manual P 38 86.0472 50 0.35 63
IV.ATPI.EHZ. 2024-07-26T00:30:34.78 0.3 undecidable manual P 55 80.6637 50 0.39 63
IV.CAFI.HHZ. 2024-07-26T00:30:34.21 0.1 undecidable manual S 44 44.9217 50 -0.95 73
IV.RIBO.EHZ.01 2024-07-26T00:30:34.96 0.3 undecidable manual S 257 44.3223 50 -0.05 73
IV.ATMI.HHZ. 2024-07-26T00:30:32.09 0.6 undecidable manual P 59 64.5909 50 0.17 46
IV.SACS.HHZ. 2024-07-26T00:30:32.29 0.3 undecidable manual S 128 34.0437 50 0.03 74
IV.LOCA.HHZ. 2024-07-26T00:30:32.98 0.3 undecidable manual S 319 39.2274 50 -0.67 62
IV.OSSC.HHE. 2024-07-26T00:30:31.66 0.3 undecidable manual P 334 60.1953 50 0.43 65
IV.TRIF.CHZ. 2024-07-26T00:30:31.13 0.3 undecidable manual P 279 55.5 50 0.62 62
IV.RIBO.EHZ.01 2024-07-26T00:30:29.28 0.1 undecidable manual P 257 44.3223 50 0.49 88
IV.CSNT.HHZ. 2024-07-26T00:30:29.99 0.3 undecidable manual P 334 53.6019 50 -0.22 69
IV.LATE.HHZ. 2024-07-26T00:30:29.17 0.1 undecidable manual P 159 50.5161 50 -0.57 85
IV.CAFI.HHZ. 2024-07-26T00:30:28.57 0.3 undecidable manual P 44 44.9217 50 -0.31 69
IV.ARCI.HHN. 2024-07-26T00:30:28.46 0.1 undecidable manual S 202 22.3554 112 -0.23 97
IV.FROS.CHZ. 2024-07-26T00:30:28.31 0.1 undecidable manual P 299 39.2274 50 0.32 93
TV.SF11.HHZ. 2024-07-26T00:30:27.62 0.1 undecidable manual S 157 20.4684 114 -0.48 92
IV.SACS.HHZ. 2024-07-26T00:30:27.27 0.3 undecidable manual P 128 34.0437 50 0.07 74
IV.LOCA.HHZ. 2024-07-26T00:30:27.86 0.3 undecidable manual P 319 39.2274 50 -0.15 72
IV.MCIV.CHZ. 2024-07-26T00:30:26.58 0.1 undecidable manual P 165 29.8479 50 0.02 100
IV.ARCI.HHN. 2024-07-26T00:30:25.30 0.3 undecidable manual P 202 22.3554 112 0.16 74
TV.SF11.HHZ. 2024-07-26T00:30:25.05 0.1 undecidable manual P 157 20.4684 114 0.25 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
TV.SF11.HHE. ML:1.8 0.0005200000000000001 0.3 AML other m 2024-07-26T00:30:27.74
TV.SF11.HHN. ML:1.9 0.0006274999999999999 0.24 AML other m 2024-07-26T00:30:28.60
IV.MCIV.CHN. ML:1.6 0.0002065 1.26 AML other m 2024-07-26T00:30:30.30
IV.MCIV.CHE. ML:1.5 0.0001675 1.22 AML other m 2024-07-26T00:30:32.01
IV.SACS.HHN. ML:1.0 0.00004215 0.88 AML other m 2024-07-26T00:30:33.55
IV.LOCA.HHN. ML:1.2 0.000055849999999999996 1.28 AML other m 2024-07-26T00:30:33.29
IV.LOCA.HHE. ML:1.2 0.0000537 0.58 AML other m 2024-07-26T00:30:35.25
IV.SACS.HHE. ML:1.1 0.0000492 0.32 AML other m 2024-07-26T00:30:35.23
IV.CAFI.HHN. ML:0.9 0.000026349999999999997 0.9 AML other m 2024-07-26T00:30:36.82
IV.CAFI.HHE. ML:1.0 0.0000291 1.22 AML other m 2024-07-26T00:30:36.09
IV.CSNT.HHE. ML:1.1 0.0000295 0.54 AML other m 2024-07-26T00:30:37.70
IV.CSNT.HHN. ML:1.2 0.00003705 0.82 AML other m 2024-07-26T00:30:38.27
IV.ATMI.HHE. ML:2.0 0.0001635 0.3 AML other m 2024-07-26T00:30:42.23
IV.ATMI.HHN. ML:1.8 0.00010645 0.6 AML other m 2024-07-26T00:30:46.27
IV.ATPI.EHE. ML:1.2 0.0000213 0.82 AML other m 2024-07-26T00:30:50.00
IV.ATPI.EHN. ML:1.2 0.000019849999999999998 0.56 AML other m 2024-07-26T00:30:50.16
IV.PARC.HHE. ML:1.2 0.0000183 0.56 AML other m 2024-07-26T00:30:50.81
IV.PARC.HHN. ML:1.2 0.000019200000000000003 1.16 AML other m 2024-07-26T00:30:52.74
IV.PIEI.HHN. ML:1.0 0.000009254999999999999 1.14 AML other m 2024-07-26T00:30:53.92
IV.PIEI.HHE. ML:1.0 0.000011249999999999999 0.7 AML other m 2024-07-26T00:30:54.31
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