Earthquake with magnitude of ML 1.2 on date 18-08-2019 and time 04:56:00 (Italy) in region 6 km W Santa Sofia (FC)

A magnitude ML 1.2 earthquake occured in region: 6 km W Santa Sofia (FC), on

  • 18-08-2019 02:56:00 (UTC)
  • 18-08-2019 04:56:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.926, 11.842 at 8 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 6 4136 4136
Premilcuore FC 8 799 4935
Galeata FC 10 2516 7451
Civitella di Romagna FC 12 3786 11237
Portico e San Benedetto FC 12 756 11993
Bagno di Romagna FC 13 6026 18019
Rocca San Casciano FC 15 1910 19929
San Godenzo FI 18 1167 21096
Pratovecchio Stia AR 18 5845 26941
Tredozio FC 19 1212 28153
Verghereto FC 20 1907 30060

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km SW of Forlì (117913 inhabitants)
40 Km SW of Cesena (96758 inhabitants)
40 Km S of Faenza (58541 inhabitants)
49 Km S of Imola (69797 inhabitants)
50 Km E of Firenze (382808 inhabitants)
51 Km N of Arezzo (99543 inhabitants)
56 Km E of Scandicci (50609 inhabitants)
60 Km E of Prato (191150 inhabitants)
60 Km W of Rimini (147750 inhabitants)
62 Km SW of Ravenna (159116 inhabitants)
74 Km E of Pistoia (90315 inhabitants)
75 Km SE of Bologna (386663 inhabitants)
79 Km NE of Siena (53903 inhabitants)
86 Km W of Pesaro (94582 inhabitants)
95 Km W of Fano (60888 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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
Reviewed
Rev100
ML 1.2 2019-08-18
02:56:00
43.9258 11.8425 8 2019-08-18
03:08:03
Sala Sismica INGV-Roma 71589961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-18 02:56:00 ± 0.1
Latitude 43.9258 ± 0.0036
Longitude 11.8425 ± 0.0075
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71589961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 650
Semi-minor axis of confidence ellipse (meter) 299
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 75
Circular confidence region, given by single value of horizontal uncertainty (meter) 650
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 176
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.54229
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 71589961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-18 03:08:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.CARD.HHZ. 2019-08-18T02:56:33.29 3.0 undecidable manual S -1.62 0
IV.MPPT.EHZ. 2019-08-18T02:56:20.17 0.1 undecidable manual S 274 0.5423 50 0.34 84
IV.MOCL.EHZ. 2019-08-18T02:56:18.16 0.1 undecidable manual S 280 0.4829 50 0.1 90
IV.SEI.HHZ. 2019-08-18T02:56:14.66 0.1 undecidable manual S 290 0.3705 50 -0.09 92
IV.BRIS.HHZ. 2019-08-18T02:56:13.17 0.1 undecidable manual S 350 0.3031 103 0.52 85
IV.CRE.HHZ. 2019-08-18T02:56:13.22 0.1 undecidable manual S 166 0.3166 50 0.07 93
IV.MPPT.EHZ. 2019-08-18T02:56:11.65 0.1 undecidable manual P 274 0.5423 50 -0.06 89
IV.RUFI.EHZ. 2019-08-18T02:56:10.70 0.1 undecidable manual S 250 0.2554 106 -0.16 93
IV.MOCL.EHZ. 2019-08-18T02:56:10.64 0.1 undecidable manual P 280 0.4829 50 -0.05 91
IV.SEI.HHZ. 2019-08-18T02:56:08.41 0.1 undecidable manual P 290 0.3705 50 -0.37 87
IV.LMD.HHZ. 2019-08-18T02:56:08.06 0.1 undecidable manual S 327 0.1799 112 -0.05 96
IV.CRE.HHZ. 2019-08-18T02:56:07.59 0.1 undecidable manual P 166 0.3166 50 -0.27 90
IV.BRIS.HHZ. 2019-08-18T02:56:07.56 0.1 undecidable manual P 350 0.3031 103 -0.01 95
IV.RUFI.EHZ. 2019-08-18T02:56:06.36 0.1 undecidable manual P 250 0.2554 106 -0.18 92
IV.ASQU.HHZ. 2019-08-18T02:56:06.99 0.1 undecidable manual S 197 0.1349 118 0.46 89
IV.ASQU.HHZ. 2019-08-18T02:56:04.31 0.1 undecidable manual P 197 0.1349 118 0.27 93
IV.LMD.HHZ. 2019-08-18T02:56:04.80 0.1 positive manual P 327 0.1799 112 -0.15 94
IV.SFI.EHZ. 2019-08-18T02:56:03.26 0.1 undecidable manual S 171 0.0216 164 -0.29 94
IV.SFI.EHZ. 2019-08-18T02:56:02.31 0.1 undecidable manual P 171 0.0216 164 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SFI.EHE. ML:0 0.0012416139 0.0992 AML other m 2019-08-18T02:56:03.38
IV.SFI.EHN. ML:0 0.002454367 0.16 AML other m 2019-08-18T02:56:03.38
IV.SFI.HNE. ML:0 0.0012274846 0.08 AML other m 2019-08-18T02:56:03.38
IV.SFI.HNN. ML:0 0.002445882 0.1488 AML other m 2019-08-18T02:56:03.37
IV.ASQU.HHE. ML:1.2 0.0001549398 0.0992 AML other m 2019-08-18T02:56:07.64
IV.ASQU.HHN. ML:1.3 0.00020210615 0.1808 AML other m 2019-08-18T02:56:07.36
IV.LMD.HHE. ML:1.5 0.00023000765 0.08 AML other m 2019-08-18T02:56:08.66
IV.LMD.HHN. ML:1.3 0.0001623923 0.08 AML other m 2019-08-18T02:56:08.90
IV.RUFI.EHE. ML:0.9 4.744219E-5 0.1392 AML other m 2019-08-18T02:56:10.82
IV.RUFI.EHN. ML:1.4 0.00012810705 0.24 AML other m 2019-08-18T02:56:11.02
IV.BRIS.HHE. ML:1.4 0.000119460255 0.28 AML other m 2019-08-18T02:56:13.43
IV.BRIS.HHN. ML:1.3 8.8024435E-5 0.32 AML other m 2019-08-18T02:56:13.55
IV.CRE.HHN. ML:1.5 0.0001305319 0.2192 AML other m 2019-08-18T02:56:13.56
IV.SEI.HHE. ML:1.2 5.442427E-5 0.2192 AML other m 2019-08-18T02:56:15.18
IV.MOCL.EHE. ML:1.1 3.2125165E-5 0.16 AML other m 2019-08-18T02:56:18.43
IV.MOCL.EHN. ML:1.1 3.132635E-5 0.1392 AML other m 2019-08-18T02:56:18.56
IV.MPPT.EHE. ML:0.9 1.690169E-5 0.32 AML other m 2019-08-18T02:56:20.59
IV.MPPT.EHN. ML:1.2 2.8349595E-5 0.52 AML other m 2019-08-18T02:56:20.42
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