Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 21-05-2019 and time 17:22:43 (Italy) in region 2 km W San Giovanni d'Asso (SI)

A magnitude ML 2.2 earthquake occured in region: 2 km W San Giovanni d'Asso (SI), on

  • 21-05-2019 15:22:43 (UTC)
  • 21-05-2019 17:22:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1510, 11.5620 at 12 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
San Giovanni d'Asso SI 2 853 853
Buonconvento SI 7 3173 4026
Asciano SI 9 7118 11144
Trequanda SI 10 1254 12398
San Quirico d'Orcia SI 11 2662 15060
Montalcino SI 12 5093 20153
Pienza SI 13 2107 22260
Murlo SI 14 2389 24649
Monteroni d'Arbia SI 14 9088 33737
Rapolano Terme SI 16 5249 38986
Sinalunga SI 16 12764 51750
Castiglione d'Orcia SI 17 2346 54096
Torrita di Siena SI 17 7434 61530
Montepulciano SI 19 14097 75627

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km SE of Siena (53903 inhabitants)
44 Km SW of Arezzo (99543 inhabitants)
57 Km NE of Grosseto (82087 inhabitants)
67 Km W of Perugia (166134 inhabitants)
73 Km SE of Firenze (382808 inhabitants)
74 Km SE of Scandicci (50609 inhabitants)
89 Km SE of Prato (191150 inhabitants)
93 Km NW of Viterbo (67173 inhabitants)
95 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
Bulletin
Rev1000 		ML 2.2 2019-05-21
15:22:43		 43.1512 11.562 12 2019-11-13
14:30:52		 Bollettino Sismico Italiano INGV 69672681
Reviewed
Rev100 		ML 2.3 2019-05-21
15:22:42		 43.1685 11.5837 2 2019-05-21
15:28:50		 Sala Sismica INGV-Roma 68761261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-05-21 15:22:43 ± 0.1
Latitude 43.1512 ± 0.0054
Longitude 11.5620 ± 0.0099
Depth (km) 12 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 69672681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 838
Semi-minor axis of confidence ellipse (meter) 295
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 266
Circular confidence region, given by single value of horizontal uncertainty (meter) 840.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 29
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) 0.80489
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 69672681
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-30 13:03:30

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 40
Type of magnitude ML
Reference to an origin 68761261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-05-21 15:28:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PTRJ.HNZ. 2019-05-21T15:24:11.94 3.0 undecidable manual Sg 7.85 0
IV.VBKN.HHZ. 2019-05-21T15:24:09.12 3.0 undecidable manual Sn -2.87 0
IV.SPS2.HHZ. 2019-05-21T15:24:07.76 3.0 negative manual Pn 5.52 0
IT.MCLF.HNZ. 2019-05-21T15:24:04.68 3.0 undecidable manual Sn 3.45 0
IV.MCRV.HHZ. 2019-05-21T15:23:47.49 3.0 undecidable manual Pg 8.57 0
IV.NDIM.HHZ. 2019-05-21T15:23:44.09 3.0 undecidable manual Sg 5.44 0
IV.VBKN.HHZ. 2019-05-21T15:23:39.67 3.0 negative manual Pg 6.59 0
IV.PTRJ.HHZ. 2019-05-21T15:23:37.43 3.0 undecidable manual Pg 8.79 0
IV.CRND.HNZ. 2019-05-21T15:23:33.56 3.0 undecidable manual Pg 6.95 0
GU.CARD.HHZ. 2019-05-21T15:23:23.88 3.0 undecidable manual S 0.16 0
IV.IMOL.HNZ. 2019-05-21T15:23:06.49 3.0 undecidable manual P 0.31 0
IV.FDMO.HHZ. 2019-05-21T15:23:06.21 3.0 positive manual P 1.28 0
IV.ATPI.EHZ. 2019-05-21T15:23:06.37 1.0 undecidable manual S 64 75.5688 90 0.05 23
IV.ATVO.HHZ. 2019-05-21T15:23:05.93 0.6 undecidable manual S 69 72.8715 90 0.32 45
IV.MGAB.HHZ. 2019-05-21T15:23:00.85 0.6 undecidable manual S 120 51.9036 91 0.85 41
IV.MAON.HHZ. 2019-05-21T15:22:59.44 0.1 undecidable manual P 204 87.5457 90 0.83 77
IV.OSSC.HHZ. 2019-05-21T15:22:59.14 0.6 undecidable manual S 328 48.5181 91 0.02 49
IV.PIEI.HHZ. 2019-05-21T15:22:59.14 0.1 undecidable manual P 61 89.3439 90 0.26 88
IV.SACS.HHZ. 2019-05-21T15:22:58.56 3.0 undecidable manual S 0.28 0
IV.CSNT.HHZ. 2019-05-21T15:22:57.00 0.3 undecidable manual S 329 41.9247 91 -0.34 70
TV.SF03.EHN. 2019-05-21T15:22:56.40 0.6 undecidable manual S 165 39.9267 91 -0.42 43
IV.ATPI.EHZ. 2019-05-21T15:22:56.90 0.3 undecidable manual P 64 75.5688 90 0.14 70
IV.ATVO.HHZ. 2019-05-21T15:22:56.30 0.3 undecidable manual P 69 72.8715 90 -0.05 69
IV.ASQU.HHZ. 2019-05-21T15:22:56.64 0.3 undecidable manual P 14 73.8705 90 0.13 69
TV.SF01.EHZ. 2019-05-21T15:22:55.70 0.1 undecidable manual S 180 37.629 91 -0.51 83
TV.SF04.EHZ. 2019-05-21T15:22:55.41 0.1 undecidable manual S 167 35.9418 91 -0.33 89
IV.BADI.EHZ. 2019-05-21T15:22:55.78 0.3 undecidable manual P 54 67.8765 91 0.2 70
IV.CAFI.HHZ. 2019-05-21T15:22:55.07 0.3 undecidable manual S 59 38.1285 91 -1.28 46
IV.SSP9.EHZ. 2019-05-21T15:22:55.46 0.3 undecidable manual P 44 65.5899 91 0.23 69
TV.SF13.HHN. 2019-05-21T15:22:55.66 0.3 undecidable manual S 173 37.2294 91 -0.43 64
IV.FROS.CHZ. 2019-05-21T15:22:54.95 3.0 undecidable manual S -0.09 0
IV.ATMI.HHZ. 2019-05-21T15:22:54.63 0.3 undecidable manual P 70 60.5949 91 0.18 71
TV.SF11.HHZ. 2019-05-21T15:22:54.35 0.6 undecidable manual S 163 32.745 92 -0.55 41
IV.MGAB.HHZ. 2019-05-21T15:22:53.33 0.3 undecidable manual P 120 51.9036 91 0.22 73
IV.OSSC.HHZ. 2019-05-21T15:22:52.30 0.1 undecidable manual P 328 48.5181 91 -0.3 92
IV.RIBO.EHZ. 2019-05-21T15:22:52.92 0.1 undecidable manual P 242 47.4192 91 0.49 91
TV.SF13.HHN. 2019-05-21T15:22:51.07 0.1 undecidable manual P 173 37.2294 91 0.22 100
TV.SF03.EHN. 2019-05-21T15:22:51.46 0.1 undecidable manual P 165 39.9267 91 0.19 100
TV.SF01.EHZ. 2019-05-21T15:22:51.04 0.1 undecidable manual P 180 37.629 91 0.12 100
IV.SACS.HHZ. 2019-05-21T15:22:51.94 3.0 undecidable manual P 0.16 0
IV.CSNT.HHZ. 2019-05-21T15:22:51.07 0.1 undecidable manual P 329 41.9247 91 -0.51 89
TV.SF04.EHZ. 2019-05-21T15:22:50.89 0.1 positive manual P 167 35.9418 91 0.24 99
IV.CAFI.HHZ. 2019-05-21T15:22:50.37 0.1 positive manual P 59 38.1285 91 -0.63 83
TV.SF11.HHZ. 2019-05-21T15:22:50.26 0.1 undecidable manual P 163 32.745 92 0.09 100
IV.FROS.CHZ. 2019-05-21T15:22:50.58 3.0 positive manual P 0.66 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAFI.HNE. ML:2.1 0.000426 0.62 AML other m 2019-05-21T15:23:05.02
IV.CAFI.HHE. ML:2.1 0.0004515 0.64 AML other m 2019-05-21T15:23:05.01
IV.CAFI.HNN. ML:2.0 0.0003745 0.72 AML other m 2019-05-21T15:23:06.60
IV.CAFI.HHN. ML:2.0 0.00039150000000000003 0.2 AML other m 2019-05-21T15:23:07.91
IV.SSP9.EHE. ML:0.0 0.00031949115 0.4224 AML other m 2019-05-21T15:23:07.90
IV.BADI.EHE. ML:2.4 0.000388 0.46 AML other m 2019-05-21T15:23:18.37
IV.SSP9.EHN. ML:2.3 0.00039249999999999995 0.86 AML other m 2019-05-21T15:23:18.05
IV.BADI.EHN. ML:2.3 0.00035150000000000003 0.54 AML other m 2019-05-21T15:23:18.71
IV.FROS.CHN. ML:2.3 0.0008007364500000001 0.2176 AML other m 2019-05-21T15:22:56.10
TV.SF04.EHE. ML:2.5 0.0013914505999999998 0.1024 AML other m 2019-05-21T15:22:55.80
IV.CSNT.HHN. ML:2.3 0.00073015575 0.1024 AML other m 2019-05-21T15:22:57.54
IV.OSSC.HHE. ML:2.0 0.0002715441 0.1792 AML other m 2019-05-21T15:22:59.70
IV.OSSC.HNN. ML:2.0 0.00026964935 0.192 AML other m 2019-05-21T15:22:59.61
IV.OSSC.HHN. ML:1.9 0.00023313455 0.4224 AML other m 2019-05-21T15:22:59.56
IV.ASQU.HHE. ML:2.0 0.000166835 0.32 AML other m 2019-05-21T15:23:06.92
IV.PIEI.HHE. ML:2.0 0.00013181675 0.3456 AML other m 2019-05-21T15:23:09.98
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