Earthquake with magnitude of ML 1.9 on date 18-08-2019 and time 17:19:05 (Italy) in region 7 km W Santa Sofia (FC)

A magnitude ML 1.9 earthquake occured in region: 7 km W Santa Sofia (FC), on

  • 18-08-2019 15:19:05 (UTC)
  • 18-08-2019 17:19:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.92, 11.83 at 7 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 7 4136 4136
Premilcuore FC 8 799 4935
Galeata FC 11 2516 7451
Portico e San Benedetto FC 12 756 8207
Civitella di Romagna FC 13 3786 11993
Bagno di Romagna FC 14 6026 18019
Rocca San Casciano FC 16 1910 19929
Pratovecchio Stia AR 17 5845 25774
San Godenzo FI 17 1167 26941
Tredozio FC 19 1212 28153
Verghereto FC 20 1907 30060

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SW of Forlì (117913 inhabitants)
41 Km SW of Cesena (96758 inhabitants)
41 Km S of Faenza (58541 inhabitants)
49 Km S of Imola (69797 inhabitants)
49 Km E of Firenze (382808 inhabitants)
51 Km N of Arezzo (99543 inhabitants)
55 Km E of Scandicci (50609 inhabitants)
59 Km E of Prato (191150 inhabitants)
61 Km W of Rimini (147750 inhabitants)
63 Km SW of Ravenna (159116 inhabitants)
73 Km E of Pistoia (90315 inhabitants)
75 Km SE of Bologna (386663 inhabitants)
78 Km NE of Siena (53903 inhabitants)
87 Km W of Pesaro (94582 inhabitants)
96 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 1.9 2019-08-18
15:19:05
43.92 11.83 7 2019-08-18
15:32:17
Sala Sismica INGV-Roma 71607431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-18 15:19:05 ± 0.09
Latitude 43.92 ± 0.00
Longitude 11.83 ± 0.01
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71607431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 730
Semi-minor axis of confidence ellipse (meter) 107
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 242
Circular confidence region, given by single value of horizontal uncertainty (meter) 730
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.01979
Epicentral distance of station farthest from the epicenter (degree) 0.47574
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 71607431
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-18 15:32:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MOCL.EHZ. 2019-08-18T15:19:22.66 0.3 undecidable manual S 280 0.4757 50 0.13 90
IV.PARC.HHZ. 2019-08-18T15:19:20.40 0.3 undecidable manual S 133 0.4002 50 0.11 92
IV.SEI.HHZ. 2019-08-18T15:19:19.14 0.6 undecidable manual S 291 0.366 50 -0.12 61
IV.BRIS.HHZ. 2019-08-18T15:19:17.67 0.3 undecidable manual S 351 0.3067 102 0.43 87
IV.CRE.HHZ. 2019-08-18T15:19:17.49 0.3 undecidable manual S 164 0.3139 102 -0.04 95
IV.RUFI.EHZ. 2019-08-18T15:19:15.07 0.6 undecidable manual S 250 0.2473 105 0.06 64
IV.IMOL.EHE. 2019-08-18T15:19:15.44 0.6 undecidable manual P 352 0.4425 50 0.82 49
IV.MOCL.EHZ. 2019-08-18T15:19:15.09 0.3 undecidable manual P 280 0.4757 50 -0.1 90
IV.CPGN.EHE. 2019-08-18T15:19:13.84 0.3 undecidable manual P 109 0.3714 50 0.43 86
IV.PARC.HHZ. 2019-08-18T15:19:13.36 0.3 undecidable manual P 133 0.4002 50 -0.53 83
IV.SEI.HHZ. 2019-08-18T15:19:12.81 0.3 undecidable manual P 291 0.366 50 -0.49 85
IV.LMD.HHZ. 2019-08-18T15:19:12.53 0.3 undecidable manual S 330 0.1799 110 -0.02 97
IV.CRE.HHZ. 2019-08-18T15:19:11.87 0.3 undecidable manual P 164 0.3139 102 -0.43 87
IV.ASQU.HHZ. 2019-08-18T15:19:11.40 0.3 undecidable manual S 194 0.1286 117 0.67 83
IV.BRIS.HHZ. 2019-08-18T15:19:11.91 0.6 undecidable manual P 351 0.3067 102 -0.23 61
IV.RUFI.EHZ. 2019-08-18T15:19:10.75 0.3 undecidable manual P 250 0.2473 105 -0.09 95
IV.LMD.HHZ. 2019-08-18T15:19:09.21 0.3 undecidable manual P 330 0.1799 110 -0.22 94
IV.ASQU.HHZ. 2019-08-18T15:19:08.63 0.3 undecidable manual P 194 0.1286 117 0.26 94
IV.SFI.HNZ. 2019-08-18T15:19:07.58 0.3 undecidable manual S 147 0.0198 164 -0.25 96
IV.SFI.HNZ. 2019-08-18T15:19:06.66 0.3 undecidable manual P 147 0.0198 164 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SEI.HHE. ML:1.9 0.0002575 1.18 AML other m 2019-08-18T15:19:19.37
IV.BRIS.HHE. ML:1.9 0.000354 0.32 AML other m 2019-08-18T15:19:17.90
IV.BRIS.HHN. ML:1.9 0.000371 0.26 AML other m 2019-08-18T15:19:17.84
IV.SEI.HHN. ML:2.1 0.000398 1.28 AML other m 2019-08-18T15:19:20.29
IV.MOCL.EHE. ML:1.5 7.14E-5 0.18 AML other m 2019-08-18T15:19:22.97
IV.SFI.EHE. ML:0 0.003452298 0.1408 AML other m 2019-08-18T15:19:08.12
IV.SFI.EHN. ML:0 0.005419569 0.1152 AML other m 2019-08-18T15:19:07.67
IV.SFI.HNE. ML:0 0.0034209485 0.128 AML other m 2019-08-18T15:19:08.12
IV.SFI.HNN. ML:0 0.0054258905 0.128 AML other m 2019-08-18T15:19:07.68
IV.ASQU.HHE. ML:1.7 0.00060658835 0.1152 AML other m 2019-08-18T15:19:11.99
IV.ASQU.HHN. ML:1.9 0.0009612456 0.1792 AML other m 2019-08-18T15:19:11.69
IV.LMD.HHE. ML:2.2 0.001224276 0.1408 AML other m 2019-08-18T15:19:12.85
IV.LMD.HHN. ML:2 0.0008740125 0.1152 AML other m 2019-08-18T15:19:13.37
IV.RUFI.EHE. ML:1.6 0.00021397895 0.128 AML other m 2019-08-18T15:19:15.17
IV.CRE.HHE. ML:1.4 0.00010702339 0.2304 AML other m 2019-08-18T15:19:19.82
IV.CRE.HHN. ML:2.1 0.0005133336 0.192 AML other m 2019-08-18T15:19:17.88
IV.BRIS.HNE. ML:1.9 0.00032733165 0.3328 AML other m 2019-08-18T15:19:17.74
IV.BRIS.HNN. ML:1.9 0.0003213331 0.4736 AML other m 2019-08-18T15:19:17.97
IV.PARC.HHE. ML:1 2.943954E-5 0.2688 AML other m 2019-08-18T15:19:22.37
IV.PARC.HHN. ML:1 2.8806715E-5 0.2048 AML other m 2019-08-18T15:19:21.02
IV.MOCL.EHN. ML:1.4 6.636958E-5 0.1536 AML other m 2019-08-18T15:19:23.01
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