Earthquake with magnitude of ML 1.6 on date 18-08-2019 and time 23:10:06 (UTC) in region 7 km W Santa Sofia (FC)

A magnitude ML 1.6 earthquake occured in region: 7 km W Santa Sofia (FC), on

  • 18-08-2019 23:10:06 (UTC)
  • 19-08-2019 01:10:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.92, 11.83 at 7 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 13 756 8207
Civitella di Romagna FC 13 3786 11993
Bagno di Romagna FC 13 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 19 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 E of Firenze (382808 inhabitants)
49 Km S of Imola (69797 inhabitants)
50 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)
95 Km W of Fano (60888 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours) *

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985 *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
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 1000 ML 1.6 2019-08-18
23:10:06
43.92 11.83 7 2019-11-13
14:30:59
Bollettino Sismico Italiano INGV 71814151
Rev 100 ML 2.0 2019-08-18
23:10:07
43.92 11.82 5 2019-08-19
00:59:16
Sala Sismica INGV-Roma 71613511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-18 23:10:06 ± 0.07
Latitude 43.92 ± 0.00
Longitude 11.83 ± 0.01
Depth (km) 7 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 71814151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 497
Semi-minor axis of confidence ellipse (meter) 150
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 245
Circular confidence region, given by single value of horizontal uncertainty (meter) 500
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.96407
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 71814151
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-08-26 08:42:14

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 50
Type of magnitude ML
Reference to an origin 71613511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-19 00:59:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ATMI.HHZ. 2019-08-18T23:10:30.40 3.0 undecidable manual S -0.31 0
IV.CSNT.HHZ. 2019-08-18T23:10:28.05 0.6 undecidable manual S 222 0.5945 50 0.39 42
IV.PII.HHZ. 2019-08-18T23:10:25.58 0.6 undecidable manual P 259 0.9641 50 0.41 38
IV.ARVD.HHZ. 2019-08-18T23:10:24.67 3.0 negative manual P -0.19 0
IV.MOCL.EHZ. 2019-08-18T23:10:24.01 0.6 undecidable manual S 281 0.4775 50 -0.19 45
IV.ATTE.HHZ. 2019-08-18T23:10:22.67 0.6 undecidable manual P 152 0.813 50 0.09 42
IV.SSP9.EHZ. 2019-08-18T23:10:22.86 0.6 undecidable manual S 148 0.4065 50 0.77 38
IV.BRSN.EHZ. 2019-08-18T23:10:22.36 0.6 undecidable manual S 26 0.4047 50 0.31 44
IV.MPAG.EHZ. 2019-08-18T23:10:21.20 0.3 undecidable manual P 113 0.7285 50 0.08 65
IV.ATFO.HHZ. 2019-08-18T23:10:21.73 1.0 undecidable manual P 136 0.768 50 -0.08 22
IV.SEI.HHZ. 2019-08-18T23:10:20.82 0.6 undecidable manual S 292 0.3678 50 -0.12 46
IV.ATMI.HHZ. 2019-08-18T23:10:20.04 3.0 negative manual P -0.01 0
IV.CRE.HHZ. 2019-08-18T23:10:19.14 0.3 undecidable manual S 164 0.3121 102 0.07 71
IV.CRMI.HHZ. 2019-08-18T23:10:19.59 0.3 undecidable manual P 259 0.6277 50 0.18 65
IV.BRIS.HHZ. 2019-08-18T23:10:19.60 0.6 undecidable manual S 351 0.3085 102 0.65 41
IV.PIEI.HHZ. 2019-08-18T23:10:19.20 0.3 undecidable manual P 127 0.6349 50 -0.33 63
IV.NARO.HHZ. 2019-08-18T23:10:18.98 0.3 undecidable manual P 120 0.6205 50 -0.31 63
IV.OSSC.HHZ. 2019-08-18T23:10:18.61 0.3 undecidable manual P 227 0.581 50 0.01 68
IV.CSNT.HHZ. 2019-08-18T23:10:18.79 0.3 undecidable manual P 222 0.5945 50 -0.05 67
IV.PE3.EHZ. 2019-08-18T23:10:17.83 0.6 undecidable manual P 115 0.527 50 0.14 45
IV.MPPT.EHZ. 2019-08-18T23:10:17.63 0.6 undecidable manual P 274 0.5369 50 -0.21 44
IV.BADI.EHZ. 2019-08-18T23:10:16.88 0.6 undecidable manual P 144 0.5054 50 -0.43 42
IV.MOCL.EHZ. 2019-08-18T23:10:16.55 0.6 undecidable manual P 281 0.4775 50 -0.29 44
IV.IMOL.EHZ. 2019-08-18T23:10:16.95 0.3 positive manual P 352 0.4452 50 0.68 59
IV.RUFI.EHE. 2019-08-18T23:10:16.57 0.6 undecidable manual S 251 0.2473 105 -0.09 48
IV.BRSN.EHZ. 2019-08-18T23:10:15.98 0.1 negative manual P 26 0.4047 50 0.38 87
IV.SSP9.EHZ. 2019-08-18T23:10:15.24 0.6 undecidable manual P 148 0.4065 50 -0.38 44
IV.SEI.HHZ. 2019-08-18T23:10:14.49 0.1 negative manual P 292 0.3678 50 -0.46 86
IV.PARC.HHZ. 2019-08-18T23:10:14.99 0.3 undecidable manual P 133 0.3984 50 -0.48 64
IV.LMD.HHZ. 2019-08-18T23:10:14.21 0.6 undecidable manual S 330 0.1826 110 -0.05 49
IV.CRE.HHZ. 2019-08-18T23:10:13.57 0.1 positive manual P 164 0.3121 102 -0.31 90
IV.ASQU.HHZ. 2019-08-18T23:10:13.02 0.3 undecidable manual S 195 0.1268 118 0.72 62
IV.BRIS.HHZ. 2019-08-18T23:10:13.70 0.1 positive manual P 351 0.3085 102 -0.1 94
IV.RUFI.EHE. 2019-08-18T23:10:12.42 0.1 positive manual P 251 0.2473 105 -0.06 96
IV.ASQU.HHZ. 2019-08-18T23:10:10.33 0.1 undecidable manual P 195 0.1268 118 0.36 92
IV.LMD.HHZ. 2019-08-18T23:10:10.89 0.1 positive manual P 330 0.1826 110 -0.21 94
IV.SFI.EHZ. 2019-08-18T23:10:09.17 0.6 undecidable manual S 148 0.0171 166 -0.27 48
IV.SFI.EHZ. 2019-08-18T23:10:08.24 0.1 undecidable manual P 148 0.0171 166 -0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASQU.HHN. ML:2.4 0.002865 0.42 AML other m 2019-08-18T23:10:13.36
IV.ASQU.HHE. ML:2.3 0.002095 0.44 AML other m 2019-08-18T23:10:13.37
IV.LMD.HHN. ML:2.7 0.0042 1.2 AML other m 2019-08-18T23:10:14.92
IV.LMD.HHE. ML:2.6 0.002785 0.14 AML other m 2019-08-18T23:10:14.63
IV.CRE.HHN. ML:2.6 0.001845 0.22 AML other m 2019-08-18T23:10:19.58
IV.BRIS.HHE. ML:2.6 0.001845 0.32 AML other m 2019-08-18T23:10:19.64
IV.BRIS.HNE. ML:2.6 0.001755 0.32 AML other m 2019-08-18T23:10:19.65
IV.BRIS.HHN. ML:2.6 0.0016 0.28 AML other m 2019-08-18T23:10:19.59
IV.BRIS.HNN. ML:2.6 0.00159 0.38 AML other m 2019-08-18T23:10:19.59
IV.SEI.HHE. ML:2.5 0.001095 1.22 AML other m 2019-08-18T23:10:21.05
IV.SEI.HHN. ML:2.8 0.00196 0.32 AML other m 2019-08-18T23:10:21.44
IV.CRE.HHE. ML:1.9 0.0003565 1.38 AML other m 2019-08-18T23:10:21.29
IV.PARC.HHE. ML:1.6 0.0001335 0.4 AML other m 2019-08-18T23:10:23.11
IV.SSP9.EHN. ML:1.8 0.0001715 1.04 AML other m 2019-08-18T23:10:23.94
IV.PARC.HHN. ML:1.7 0.0001525 0.8 AML other m 2019-08-18T23:10:23.56
IV.SSP9.EHE. ML:1.8 0.0001965 0.62 AML other m 2019-08-18T23:10:24.45
IV.MOCL.EHE. ML:2 0.000269 0.2 AML other m 2019-08-18T23:10:24.66
IV.MOCL.EHN. ML:2.1 0.0002845 0.16 AML other m 2019-08-18T23:10:25.33
IV.BADI.EHN. ML:1.8 0.0001585 0.44 AML other m 2019-08-18T23:10:26.60
IV.MPPT.EHE. ML:1.9 0.000178 1.24 AML other m 2019-08-18T23:10:26.86
IV.PE3.EHE. ML:2.6 0.0007985 0.44 AML other m 2019-08-18T23:10:27.57
IV.PE3.EHN. ML:2.4 0.000552 1.58 AML other m 2019-08-18T23:10:27.06
IV.MPPT.EHN. ML:2 0.0002005 1.58 AML other m 2019-08-18T23:10:28.17
IV.NARO.HHE. ML:1.4 4.04E-5 1.66 AML other m 2019-08-18T23:10:29.05
IV.NARO.HHN. ML:1.4 4.355E-5 0.82 AML other m 2019-08-18T23:10:30.80
IV.OSSC.HHN. ML:2.1 0.000244 0.64 AML other m 2019-08-18T23:10:30.39
IV.CSNT.HHN. ML:1.8 0.0001325 0.44 AML other m 2019-08-18T23:10:30.39
IV.BADI.EHE. ML:1.8 0.0001465 0.34 AML other m 2019-08-18T23:10:30.52
IV.OSSC.HHE. ML:2 0.0001725 0.34 AML other m 2019-08-18T23:10:31.10
IV.PIEI.HHE. ML:1.6 5.955E-5 0.56 AML other m 2019-08-18T23:10:32.60
IV.PIEI.HHN. ML:1.4 3.96E-5 0.3 AML other m 2019-08-18T23:10:32.60
IV.CRMI.HHN. ML:1.5 5.135E-5 0.5 AML other m 2019-08-18T23:10:33.79
IV.BRSN.HNE. ML:2.3 0.000581 0.44 AML other m 2019-08-18T23:10:34.55
IV.CSNT.HHE. ML:1.8 0.00011115 1.42 AML other m 2019-08-18T23:10:35.27
IV.CRMI.HHE. ML:1.4 4.68E-5 1.06 AML other m 2019-08-18T23:10:36.73
IV.ATMI.HHE. ML:2.2 0.000228 0.36 AML other m 2019-08-18T23:10:37.87
IV.ATMI.HHN. ML:2.3 0.0003135 1.52 AML other m 2019-08-18T23:10:37.84
IV.BRSN.EHN. ML:2.3 0.0005495 0.96 AML other m 2019-08-18T23:10:38.72
IV.BRSN.HNN. ML:2.3 0.0005725 0.96 AML other m 2019-08-18T23:10:38.24
IV.BRSN.EHE. ML:2.3 0.0006055 0.74 AML other m 2019-08-18T23:10:38.11
IV.ATTE.HHE. ML:2 0.000124 0.86 AML other m 2019-08-18T23:10:39.15
IV.ATTE.HHN. ML:1.9 0.00010005 0.62 AML other m 2019-08-18T23:10:40.41
IV.MPAG.EHN. ML:1.6 5.39E-5 0.66 AML other m 2019-08-18T23:10:40.76
IV.MPAG.EHE. ML:1.6 4.79E-5 0.58 AML other m 2019-08-18T23:10:42.59
IV.ARVD.HHN. ML:1.5 2.97E-5 1.28 AML other m 2019-08-18T23:10:42.65
IV.PII.HHE. ML:2 9.025E-5 0.66 AML other m 2019-08-18T23:10:43.96
IV.ATFO.HHE. ML:1.9 0.0001007 0.38 AML other m 2019-08-18T23:10:43.61
IV.ATFO.HHN. ML:1.7 6.855E-5 0.5 AML other m 2019-08-18T23:10:44.44
IV.ARVD.HHE. ML:1.4 2.62E-5 0.64 AML other m 2019-08-18T23:10:44.56
IV.PII.HHN. ML:2 8.87E-5 0.9 AML other m 2019-08-18T23:10:44.78
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in full SEED format Download