Earthquake with magnitude of ML 1.4 on date 25-07-2019 and time 08:45:27 (Italy) in region 5 km W Asciano (SI)

A magnitude ML 1.4 earthquake occured in region: 5 km W Asciano (SI), on

  • 25-07-2019 06:45:27 (UTC)
  • 25-07-2019 08:45:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.23, 11.5 at 13 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
Asciano SI 5 7118 7118
Monteroni d'Arbia SI 6 9088 16206
Buonconvento SI 11 3173 19379
Rapolano Terme SI 11 5249 24628
Murlo SI 11 2389 27017
San Giovanni d'Asso SI 12 853 27870
Castelnuovo Berardenga SI 13 9097 36967
Trequanda SI 15 1254 38221
Siena SI 16 53903 92124
Montalcino SI 19 5093 97217
Sinalunga SI 20 12764 109981

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km SE of Siena (53903 inhabitants)
41 Km SW of Arezzo (99543 inhabitants)
61 Km NE of Grosseto (82087 inhabitants)
63 Km SE of Firenze (382808 inhabitants)
64 Km SE of Scandicci (50609 inhabitants)
74 Km W of Perugia (166134 inhabitants)
79 Km SE of Prato (191150 inhabitants)
91 Km SE of Pistoia (90315 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.4 2019-07-25
06:45:27
43.23 11.5 13 2019-07-25
07:28:49
Sala Sismica INGV-Roma 70864921
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-25 06:45:27 ± 0.23
Latitude 43.23 ± 0.01
Longitude 11.50 ± 0.02
Depth (km) 13 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 70864921

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1090
Semi-minor axis of confidence ellipse (meter) 900
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 63
Circular confidence region, given by single value of horizontal uncertainty (meter) 1090
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 18
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
Epicentral distance of station farthest from the epicenter (degree) 0.50812
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 13
Type of magnitude ML
Reference to an origin 70864921
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-25 07:28:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FERC.HNZ. 2019-07-25T06:47:56.78 3.0 undecidable manual Sn 6.41 0
IV.MBFT.HHZ. 2019-07-25T06:47:43.25 3.0 undecidable manual Sn 2.77 0
AC.PUK.HHZ. 2019-07-25T06:47:11.71 3.0 undecidable manual Pg 30.24 0
IV.MRB1.HNZ. 2019-07-25T06:47:03.91 3.0 undecidable manual Sg 15.84 0
IV.SPS2.HHZ. 2019-07-25T06:46:51.11 3.0 negative manual Pg 19 0
IV.DGI.HHZ. 2019-07-25T06:46:48.15 3.0 undecidable manual Sn -3.41 0
IV.PAOL.HNZ. 2019-07-25T06:46:47.54 3.0 undecidable manual Sn 2.42 0
IV.FERC.HNZ. 2019-07-25T06:46:44.04 3.0 undecidable manual Pn 3.99 0
IV.MFNL.HHZ. 2019-07-25T06:46:40.73 3.0 negative manual Pn 4.26 0
OX.ACOM.HHZ. 2019-07-25T06:46:40.25 3.0 undecidable manual Sn -2.61 0
IV.EUCT.HNZ. 2019-07-25T06:46:27.39 3.0 undecidable manual Sn 1.62 0
IV.MILN.HNZ. 2019-07-25T06:46:25.11 3.0 undecidable manual Sn -3.63 0
CR.STON.BHZ. 2019-07-25T06:46:22.90 3.0 undecidable manual Pn 5.08 0
IV.PZUN.HHZ. 2019-07-25T06:46:15.99 3.0 positive manual Pn 0.86 0
IV.SAMA.HHZ. 2019-07-25T06:46:14.19 3.0 undecidable manual Sn -1.26 0
IV.TOLF.HHZ. 2019-07-25T06:46:08.39 3.0 undecidable manual Sn 0.01 0
TV.SF01.EHZ. 2019-07-25T06:45:42.82 0.3 undecidable manual S 173 0.4245 94 -0.17 79
TV.SF11.HHE. 2019-07-25T06:45:41.30 0.3 undecidable manual S 160 0.3885 94 -0.63 68
IV.ARCI.HHZ. 2019-07-25T06:45:40.97 0.3 undecidable manual S 182 0.3813 94 -0.76 68
IV.OSSC.HHZ. 2019-07-25T06:45:40.18 0.3 undecidable manual S 328 0.3417 95 -0.39 76
IV.CSNT.HHZ. 2019-07-25T06:45:38.35 0.3 undecidable manual S 328 0.2824 97 -0.46 74
IV.CRE.HHZ. 2019-07-25T06:45:38.32 0.3 undecidable manual P 41 0.5081 93 0.26 78
IV.SACS.HHZ. 2019-07-25T06:45:37.85 0.3 undecidable manual P 142 0.4892 93 0.11 79
IV.FROS.CHE. 2019-07-25T06:45:37.60 0.3 undecidable manual S 265 0.2482 98 -0.21 82
TV.SF14.HHE. 2019-07-25T06:45:37.45 0.3 undecidable manual P 170 0.4856 93 -0.24 78
TV.SF01.EHZ. 2019-07-25T06:45:36.61 0.3 undecidable manual P 173 0.4245 94 -0.03 81
TV.SF11.HHE. 2019-07-25T06:45:36.76 0.3 undecidable manual P 160 0.3885 94 0.74 67
TV.SF13.HHE. 2019-07-25T06:45:36.79 0.3 undecidable manual P 168 0.4245 94 0.15 79
TV.SF04.EHE. 2019-07-25T06:45:36.67 0.3 undecidable manual P 163 0.4155 94 0.19 78
IV.CAFI.HHZ. 2019-07-25T06:45:35.21 0.3 undecidable manual P 74 0.3552 95 -0.25 76
IV.ARCI.HHZ. 2019-07-25T06:45:35.83 0.3 undecidable manual P 182 0.3813 94 -0.08 82
IV.OSSC.HHZ. 2019-07-25T06:45:34.92 0.3 undecidable manual P 328 0.3417 95 -0.32 78
IV.FROS.CHE. 2019-07-25T06:45:34.10 0.1 undecidable manual P 265 0.2482 98 0.46 100
IV.CSNT.HHZ. 2019-07-25T06:45:33.54 0.3 undecidable manual P 328 0.2824 97 -0.68 70
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSNT.HHE. ML:0 0.000256 0.5 AML other m 2019-07-25T06:45:38.60
IV.CSNT.HHN. ML:0 0.0002765 0.12 AML other m 2019-07-25T06:45:38.46
IV.CAFI.HHN. ML:0 5.745E-5 0.26 AML other m 2019-07-25T06:45:39.73
IV.CAFI.HHE. ML:0 5.385E-5 0.58 AML other m 2019-07-25T06:45:40.59
IV.OSSC.HHN. ML:1.5 0.0001126 1.28 AML other m 2019-07-25T06:45:41.08
IV.OSSC.HHE. ML:1.5 0.000116 1.46 AML other m 2019-07-25T06:45:41.82
IV.ARCI.HHE. ML:0 3.215E-5 0.54 AML other m 2019-07-25T06:45:42.70
IV.ARCI.HHN. ML:0 4.415E-5 0.62 AML other m 2019-07-25T06:45:43.24
IV.APEC.HHN. ML:1.8 7.505E-5 0.06 AML other m 2019-07-25T06:46:07.27
IV.OSSC.HNE. ML:1.6 0.000158792 0.72 AML other m 2019-07-25T06:45:41.08
IV.OSSC.HNN. ML:1.5 0.000120202025 0.4192 AML other m 2019-07-25T06:45:40.88
TV.SF01.EHE. ML:1.1 3.659286E-5 0.2816 AML other m 2019-07-25T06:45:45.17
TV.SF01.EHN. ML:1.2 4.012881E-5 0.2016 AML other m 2019-07-25T06:45:44.26
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download