Earthquake with magnitude of ML 1.8 on date 06-12-2019 and time 08:43:52 (Italy) in region 3 km NW Santa Sofia (FC)

A magnitude ML 1.8 earthquake occured in region: 3 km NW Santa Sofia (FC), on

  • 06-12-2019 07:43:52 (UTC)
  • 06-12-2019 08:43:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.97, 11.88 at 9 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 3 4136 4136
Galeata FC 4 2516 6652
Civitella di Romagna FC 6 3786 10438
Premilcuore FC 9 799 11237
Portico e San Benedetto FC 10 756 11993
Rocca San Casciano FC 11 1910 13903
Bagno di Romagna FC 14 6026 19929
Tredozio FC 17 1212 21141
Predappio FC 17 6346 27487
Dovadola FC 17 1653 29140

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km SW of Forlì (117913 inhabitants)
34 Km SW of Cesena (96758 inhabitants)
35 Km S of Faenza (58541 inhabitants)
45 Km SE of Imola (69797 inhabitants)
55 Km E of Firenze (382808 inhabitants)
56 Km W of Rimini (147750 inhabitants)
56 Km N of Arezzo (99543 inhabitants)
56 Km SW of Ravenna (159116 inhabitants)
61 Km E of Scandicci (50609 inhabitants)
64 Km E of Prato (191150 inhabitants)
73 Km SE of Bologna (386663 inhabitants)
77 Km E of Pistoia (90315 inhabitants)
83 Km W of Pesaro (94582 inhabitants)
85 Km NE of Siena (53903 inhabitants)
92 Km W of Fano (60888 inhabitants)
99 Km S of Ferrara (133155 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 1.8 2019-12-06
07:43:52
43.97 11.88 9 2019-12-06
07:50:39
Sala Sismica INGV-Roma 74369491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-06 07:43:52 ± 0.12
Latitude 43.97 ± 0.00
Longitude 11.88 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 74369491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 895
Semi-minor axis of confidence ellipse (meter) 409
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 255
Circular confidence region, given by single value of horizontal uncertainty (meter) 900
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 136
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.63942
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:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 26
Type of magnitude ML
Reference to an origin 74369491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-06 07:50:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MOCL.EHZ. 2019-12-06T07:44:11.34 0.6 undecidable manual S 274 0.5063 50 0.65 39
IV.CRE.HHZ. 2019-12-06T07:44:06.31 0.6 undecidable manual S 172 0.3534 50 0.15 46
IV.ATPI.EHZ. 2019-12-06T07:44:06.25 1.0 negative manual P 144 0.6394 50 0.84 18
IV.SEI.. 2019-12-06T07:44:05.64 3.0 undecidable manual S 0
IV.RUFI.EHZ. 2019-12-06T07:44:04.43 0.3 undecidable manual S 244 0.2995 50 -0.13 72
IV.BRIS.HHZ. 2019-12-06T07:44:03.97 0.3 undecidable manual S 342 0.2689 107 0.35 68
IV.MOCL.EHZ. 2019-12-06T07:44:03.33 1.0 positive manual P 274 0.5063 50 0.2 22
IV.ASQU.HHZ. 2019-12-06T07:44:00.71 0.6 undecidable manual S 201 0.1853 114 0.1 49
IV.CRE.HHZ. 2019-12-06T07:44:00.24 0.1 negative manual P 172 0.3534 50 -0.28 91
IV.CPGN.EHZ. 2019-12-06T07:44:00.69 1.0 undecidable manual P 118 0.357 50 0.12 23
IV.RUFI.EHZ. 2019-12-06T07:43:59.27 0.1 undecidable manual P 244 0.2995 50 -0.32 91
IV.LMD.HHZ. 2019-12-06T07:43:59.91 0.6 undecidable manual S 311 0.1664 116 -0.04 49
IV.SEI.HHZ. 2019-12-06T07:43:59.14 3.0 negative manual P -1.73 0
IV.BRIS.HHZ. 2019-12-06T07:43:58.87 0.1 positive manual P 342 0.2689 107 -0.18 94
IV.ASQU.HHZ. 2019-12-06T07:43:57.24 0.1 positive manual P 201 0.1853 114 -0.07 98
IV.SFI.EHZ. 2019-12-06T07:43:57.15 0.3 undecidable manual S 202 0.0692 140 0.19 74
IV.LMD.HHZ. 2019-12-06T07:43:56.58 0.6 positive manual P 311 0.1664 116 -0.35 46
IV.SFI.EHZ. 2019-12-06T07:43:55.30 0.1 positive manual P 202 0.0692 140 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RUFI.EHE. ML:0 0.00016623785 0.4032 AML other m 2019-12-06T07:44:04.68
IV.RUFI.EHN. ML:0 0.0002611491 0.4608 AML other m 2019-12-06T07:44:04.93
IV.SFI.EHE. ML:2.3 0.0032941555 0.2432 AML other m 2019-12-06T07:43:57.29
IV.SFI.EHN. ML:2.5 0.004802913 0.1408 AML other m 2019-12-06T07:43:57.28
IV.SFI.HNE. ML:2.3 0.0033039785 0.2432 AML other m 2019-12-06T07:43:57.29
IV.SFI.HNN. ML:2.5 0.004771286 0.1408 AML other m 2019-12-06T07:43:57.28
IV.LMD.HHE. ML:1.6 0.00035267385 0.1792 AML other m 2019-12-06T07:44:00.81
IV.LMD.HHN. ML:1.6 0.0003531505 0.16 AML other m 2019-12-06T07:44:00.84
IV.ASQU.HHE. ML:2 0.00066604335 0.3008 AML other m 2019-12-06T07:44:01.13
IV.ASQU.HHN. ML:1.9 0.00063053625 0.2176 AML other m 2019-12-06T07:44:01.02
IV.BRIS.HNE. ML:1.4 0.000112763 0.736 AML other m 2019-12-06T07:44:02.06
IV.BRIS.HNN. ML:2.3 0.0010953141 0.5888 AML other m 2019-12-06T07:44:15.29
IV.BRIS.HHE. ML:1.8 0.0003472478 0.3392 AML other m 2019-12-06T07:44:04.28
IV.BRIS.HHN. ML:2 0.0005803163 0.4032 AML other m 2019-12-06T07:44:04.40
IV.CRE.HHE. ML:1.8 0.0002003588 0.3392 AML other m 2019-12-06T07:44:06.90
IV.CRE.HHN. ML:2 0.0003376369 0.2368 AML other m 2019-12-06T07:44:06.62
IV.CPGN.HNE. ML:1.5 0.000116864945 0.5248 AML other m 2019-12-06T07:44:19.50
IV.CPGN.HNN. ML:1.8 0.00021655255 0.8064 AML other m 2019-12-06T07:44:11.18
IV.CPGN.EHE. ML:1.2 5.995322E-5 0.4992 AML other m 2019-12-06T07:44:17.86
IV.CPGN.EHN. ML:1.3 7.610521E-5 0.8384 AML other m 2019-12-06T07:44:18.74
IV.MOCL.EHE. ML:1.2 3.554963E-5 0.4416 AML other m 2019-12-06T07:44:16.42
IV.MOCL.EHN. ML:1.2 3.7602965E-5 0.1792 AML other m 2019-12-06T07:44:14.38
IV.ATPI.EHE. ML:1.3 2.8275475E-5 0.32 AML other m 2019-12-06T07:44:19.00
IV.ATPI.EHN. ML:1.3 3.227251E-5 0.3456 AML other m 2019-12-06T07:44:18.63
IV.ATPI.HNE. ML:1.8 0.00010236265 0.7488 AML other m 2019-12-06T07:44:14.89
IV.ATPI.HNN. ML:2.3 0.00029415205 1.504 AML other m 2019-12-06T07:44:11.14
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