Earthquake with magnitude of ML 1.2 on date 15-05-2022 and time 21:27:37 (UTC) in region 6 km SE Chiusdino (SI)

A magnitude ML 1.2 earthquake occured in region: 6 km SE Chiusdino (SI), on

  • 15-05-2022 21:27:37 (UTC)
  • 15-05-2022 23:27:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1100, 11.1220 at 16 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
Chiusdino SI 6 1903 1903
Monticiano SI 6 1571 3474
Montieri GR 9 1204 4678
Roccastrada GR 12 9199 13877
Radicondoli SI 18 914 14791
Civitella Paganico GR 18 3154 17945

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km SW of Siena (53903 inhabitants)
39 Km N of Grosseto (82087 inhabitants)
72 Km S of Scandicci (50609 inhabitants)
73 Km SW of Arezzo (99543 inhabitants)
74 Km S of Firenze (382808 inhabitants)
82 Km SE of Livorno (159219 inhabitants)
86 Km S of Prato (191150 inhabitants)
89 Km SE of Pisa (89158 inhabitants)
93 Km S of Pistoia (90315 inhabitants)
96 Km SE of Lucca (89046 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 2022-05-15
21:27:37
43.11 11.1217 17 2022-05-15
21:42:45
Sala Sismica INGV-Roma 104687491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-05-15 21:27:37 ± 0.2
Latitude 43.1100 ± 0.0189
Longitude 11.1217 ± 0.0394
Depth (km) 17 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 104687491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3710
Semi-minor axis of confidence ellipse (meter) 1020
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 302
Circular confidence region, given by single value of horizontal uncertainty (meter) 3710.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 180
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.48
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.75903
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 104687491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-05-15 21:42:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MURB.HHZ. 2022-05-15T21:27:56.79 3.0 positive manual P -0.11 0
IV.CELB.HHZ. 2022-05-15T21:27:52.86 0.3 undecidable manual P 242 84.249 94 0.51 59
IV.CSNT.HHZ. 2022-05-15T21:27:51.31 0.6 undecidable manual S 19 42.5241 100 -0.54 42
IV.CASP.HHZ. 2022-05-15T21:27:50.92 0.1 undecidable manual S 211 41.0256 101 -0.55 79
IV.CASP.HHZ. 2022-05-15T21:27:46.02 0.1 undecidable manual P 211 41.0256 101 0.28 95
IV.CSNT.HHZ. 2022-05-15T21:27:46.39 0.1 undecidable manual P 19 42.5241 100 0.43 90
IV.RIBO.EHZ.01 2022-05-15T21:27:45.67 0.1 undecidable manual S 199 18.87 121 -0.19 88
IV.FROS.CHZ. 2022-05-15T21:27:43.43 0.1 undecidable manual S 14 11.3775 138 -0.89 74
IV.RIBO.EHZ.01 2022-05-15T21:27:42.77 0.1 undecidable manual P 199 18.87 121 0.27 100
IV.FROS.CHZ. 2022-05-15T21:27:41.49 0.1 undecidable manual P 14 11.3775 138 -0.12 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FROS.CHE. ML:1.2 0.0001518754 0.2688 AML other m 2022-05-15T21:27:43.55
IV.FROS.CHN. ML:1.2 0.00013226975499999998 0.256 AML other m 2022-05-15T21:27:43.78
IV.CASP.HHN. ML:1.0 0.0000367 0.16 AML other m 2022-05-15T21:27:51.14
IV.CASP.HHE. ML:1.2 0.0000552 0.2 AML other m 2022-05-15T21:27:51.23
IV.RIBO.EHE.01 ML:1.4 0.00014298118 0.1792 AML other m 2022-05-15T21:27:45.86
IV.RIBO.EHN.01 ML:1.3 0.00014095605 0.1408 AML other m 2022-05-15T21:27:45.81
IV.CASP.HNE. ML:1.6 0.00012459621 3.52 AML other m 2022-05-15T21:27:54.10
IV.CSNT.HHN. ML:0.7 0.000013684605 3.8656 AML other m 2022-05-15T21:27:52.19
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