Earthquake with magnitude of ML 1.1 on date 17-08-2019 and time 19:03:20 (Italy) in region 4 km W Santa Sofia (FC)

A magnitude ML 1.1 earthquake occured in region: 4 km W Santa Sofia (FC), on

  • 17-08-2019 17:03:20 (UTC)
  • 17-08-2019 19:03:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.94, 11.86 at 10 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
Santa Sofia FC 4 4136 4136
Galeata FC 8 2516 6652
Premilcuore FC 8 799 7451
Civitella di Romagna FC 10 3786 11237
Portico e San Benedetto FC 12 756 11993
Bagno di Romagna FC 13 6026 18019
Rocca San Casciano FC 14 1910 19929
Tredozio FC 19 1212 21141
San Godenzo FI 19 1167 22308
Verghereto FC 19 1907 24215
Pratovecchio Stia AR 20 5845 30060

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km SW of Forlì (117913 inhabitants)
38 Km SW of Cesena (96758 inhabitants)
39 Km S of Faenza (58541 inhabitants)
48 Km S of Imola (69797 inhabitants)
52 Km E of Firenze (382808 inhabitants)
52 Km N of Arezzo (99543 inhabitants)
58 Km E of Scandicci (50609 inhabitants)
58 Km W of Rimini (147750 inhabitants)
60 Km SW of Ravenna (159116 inhabitants)
62 Km E of Prato (191150 inhabitants)
75 Km SE of Bologna (386663 inhabitants)
76 Km E of Pistoia (90315 inhabitants)
81 Km NE of Siena (53903 inhabitants)
84 Km W of Pesaro (94582 inhabitants)
93 Km W of Fano (60888 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 1.1 2019-08-17
17:03:20
43.94 11.86 10 2019-08-17
17:27:31
Sala Sismica INGV-Roma 71578181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-17 17:03:20 ± 0.37
Latitude 43.94 ± 0.01
Longitude 11.86 ± 0.03
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71578181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2515
Semi-minor axis of confidence ellipse (meter) 724
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 82
Circular confidence region, given by single value of horizontal uncertainty (meter) 2520
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 238
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.38131
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 71578181
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-17 17:27:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PE3.EHZ. 2019-08-17T17:03:39.74 3.0 undecidable manual S -0.02 0
IV.SEI.HHZ. 2019-08-17T17:03:34.40 0.3 undecidable manual S 288 0.3813 50 0.28 67
IV.ATPI.EHZ. 2019-08-17T17:03:34.63 3.0 negative manual P 1.49 0
IV.RUFI.EHZ. 2019-08-17T17:03:30.52 0.3 undecidable manual S 249 0.2725 50 -0.38 67
IV.SEI.HHZ. 2019-08-17T17:03:28.14 0.1 undecidable manual P 288 0.3813 50 -0.02 94
IV.ASQU.HHZ. 2019-08-17T17:03:27.07 0.3 undecidable manual S 201 0.1493 120 0.42 68
IV.CRE.HHZ. 2019-08-17T17:03:27.56 3.0 undecidable manual P 0.05 0
IV.LMD.HHZ. 2019-08-17T17:03:27.74 0.3 undecidable manual S 322 0.1799 116 0.03 73
IV.RUFI.EHZ. 2019-08-17T17:03:26.16 0.1 undecidable manual P 249 0.2725 50 -0.15 94
IV.ASQU.HHZ. 2019-08-17T17:03:24.21 0.6 positive manual P 201 0.1493 120 0.36 46
IV.LMD.HHZ. 2019-08-17T17:03:24.55 0.1 undecidable manual P 322 0.1799 116 0.09 97
IV.SFI.EHZ. 2019-08-17T17:03:23.17 0.1 undecidable manual S 200 0.0333 159 -0.4 93
IV.SFI.EHZ. 2019-08-17T17:03:22.13 0.1 undecidable manual P 200 0.0333 159 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SFI.EHE. ML:1.5 0.00063836175 0.1024 AML other m 2019-08-17T17:03:23.24
IV.SFI.EHN. ML:1.7 0.0009717481 0.1536 AML other m 2019-08-17T17:03:23.32
IV.SFI.HNE. ML:1.5 0.0006266798 0.1024 AML other m 2019-08-17T17:03:23.24
IV.SFI.HNN. ML:1.7 0.001009034 0.1408 AML other m 2019-08-17T17:03:23.31
IV.ASQU.HHE. ML:0.9 6.9411105E-5 0.0768 AML other m 2019-08-17T17:03:27.58
IV.ASQU.HHN. ML:1 9.2482395E-5 0.256 AML other m 2019-08-17T17:03:27.62
IV.LMD.HHE. ML:1.1 8.2725035E-5 0.1408 AML other m 2019-08-17T17:03:27.96
IV.LMD.HHN. ML:1.1 0.000100421565 0.1408 AML other m 2019-08-17T17:03:28.45
IV.RUFI.EHE. ML:0.9 3.32854175E-5 0.3072 AML other m 2019-08-17T17:03:31.30
IV.RUFI.EHN. ML:1.1 6.2174935E-5 0.2688 AML other m 2019-08-17T17:03:30.68
IV.CRE.HHE. ML:0.6 1.3816355E-5 0.2304 AML other m 2019-08-17T17:03:34.76
IV.CRE.HHN. ML:1.1 5.16675E-5 0.2048 AML other m 2019-08-17T17:03:33.57
IV.SEI.HHE. ML:1 3.157357E-5 0.2048 AML other m 2019-08-17T17:03:35.49
IV.SEI.HHN. ML:1.2 5.124373E-5 0.2304 AML other m 2019-08-17T17:03:35.16
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