Earthquake with magnitude of ML 0.9 on date 17-08-2019 and time 22:38:24 (Italy) in region 7 km SE Premilcuore (FC)

A magnitude ML 0.9 earthquake occured in region: 7 km SE Premilcuore (FC), on

  • 17-08-2019 20:38:24 (UTC)
  • 17-08-2019 22:38:24 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.92, 11.8 at 6 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
Premilcuore FC 7 799 799
Santa Sofia FC 9 4136 4935
Portico e San Benedetto FC 12 756 5691
Galeata FC 12 2516 8207
Civitella di Romagna FC 15 3786 11993
San Godenzo FI 15 1167 13160
Bagno di Romagna FC 16 6026 19186
Rocca San Casciano FC 16 1910 21096
Pratovecchio Stia AR 16 5845 26941
Tredozio FC 18 1212 28153
Londa FI 20 1840 29993

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km SW of Forlì (117913 inhabitants)
41 Km S of Faenza (58541 inhabitants)
43 Km SW of Cesena (96758 inhabitants)
47 Km E of Firenze (382808 inhabitants)
49 Km S of Imola (69797 inhabitants)
51 Km N of Arezzo (99543 inhabitants)
53 Km E of Scandicci (50609 inhabitants)
57 Km E of Prato (191150 inhabitants)
63 Km W of Rimini (147750 inhabitants)
64 Km SW of Ravenna (159116 inhabitants)
71 Km E of Pistoia (90315 inhabitants)
74 Km SE of Bologna (386663 inhabitants)
77 Km NE of Siena (53903 inhabitants)
89 Km W of Pesaro (94582 inhabitants)
98 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 0.9 2019-08-17
20:38:24
43.92 11.8 6 2019-08-17
21:02:28
Sala Sismica INGV-Roma 71581191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-17 20:38:24 ± 0.2
Latitude 43.92 ± 0.00
Longitude 11.80 ± 0.01
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71581191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 596
Semi-minor axis of confidence ellipse (meter) 530
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 225
Circular confidence region, given by single value of horizontal uncertainty (meter) 600
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.34624
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 71581191
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-17 21:02:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSNT.HHZ. 2019-08-17T20:38:45.45 3.0 undecidable manual S -1.09 0
IV.SEI.HHZ. 2019-08-17T20:38:38.63 0.3 undecidable manual S 293 0.3462 99 0.15 70
IV.CRE.HHZ. 2019-08-17T20:38:37.63 0.3 undecidable manual S 160 0.3211 100 0.1 71
IV.RUFI.EHZ. 2019-08-17T20:38:33.90 0.3 undecidable manual S 249 0.2275 104 -0.1 72
IV.SEI.HHZ. 2019-08-17T20:38:32.48 0.6 positive manual P 293 0.3462 99 -0.3 45
IV.CRE.HHZ. 2019-08-17T20:38:31.90 0.6 undecidable manual P 160 0.3211 100 -0.33 45
IV.BRIS.HHZ. 2019-08-17T20:38:31.69 3.0 undecidable manual P 0.2 0
IV.LMD.HHZ. 2019-08-17T20:38:31.82 0.6 undecidable manual S 336 0.17 108 -0.07 49
IV.RUFI.EHZ. 2019-08-17T20:38:30.49 0.3 positive manual P 249 0.2275 104 0.3 69
IV.ASQU.HHZ. 2019-08-17T20:38:29.78 0.6 undecidable manual S 185 0.125 114 -0.48 45
IV.ASQU.HHZ. 2019-08-17T20:38:28.56 0.6 positive manual P 185 0.125 114 0.53 44
IV.LMD.HHZ. 2019-08-17T20:38:28.87 0.3 undecidable manual P 336 0.17 108 -0.1 73
IV.SFI.EHZ. 2019-08-17T20:38:27.57 0.3 undecidable manual S 118 0.036 147 0.03 76
IV.SFI.EHZ. 2019-08-17T20:38:26.53 0.1 undecidable manual P 118 0.036 147 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASQU.HHN. ML:0.6 4.685E-5 0.18 AML other m 2019-08-17T20:38:31.64
IV.ASQU.HHE. ML:0.6 4.495E-5 1.14 AML other m 2019-08-17T20:38:32.92
IV.LMD.HHN. ML:1.2 0.0001225 1.5 AML other m 2019-08-17T20:38:33.04
IV.LMD.HHE. ML:1.3 0.000159 0.18 AML other m 2019-08-17T20:38:33.91
IV.SEI.HHN. ML:1 4.24E-5 0.26 AML other m 2019-08-17T20:38:41.25
IV.SEI.HHE. ML:0.9 3.135E-5 0.22 AML other m 2019-08-17T20:38:41.37
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