INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.7 on date 20-01-2019 and time 22:17:50 (Italy) in region 3 km E Ravenna (RA)

A magnitude ML 1.7 earthquake occured in region: 3 km E Ravenna (RA), on

  • 20-01-2019 21:17:50 (UTC)
  • 20-01-2019 22:17:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.43, 12.23 at 10 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
Ravenna RA 3 159116 159116
Russi RA 17 12247 171363
Alfonsine RA 17 12038 183401

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km E of Ravenna (159116 inhabitants)
27 Km NE of Forlì (117913 inhabitants)
32 Km E of Faenza (58541 inhabitants)
33 Km N of Cesena (96758 inhabitants)
42 Km E of Imola (69797 inhabitants)
49 Km NW of Rimini (147750 inhabitants)
66 Km SE of Ferrara (133155 inhabitants)
71 Km E of Bologna (386663 inhabitants)
79 Km NW of Pesaro (94582 inhabitants)
80 Km SE of Rovigo (51867 inhabitants)
91 Km NW 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 1.7 2019-01-20
21:17:50
44.43 12.23 10 2019-01-20
22:04:18
Sala Sismica INGV-Roma 64828111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-01-20 21:17:50 ± 0.37
Latitude 44.43 ± 0.02
Longitude 12.23 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 64828111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2490
Semi-minor axis of confidence ellipse (meter) 1770
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 1
Circular confidence region, given by single value of horizontal uncertainty (meter) 2490
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 165
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.69162
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 21
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 64828111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-01-20 22:04:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CGRP.HHZ. 2019-01-20T21:18:37.56 3.0 undecidable manual S 0
IV.SARZ.HHZ. 2019-01-20T21:18:37.11 3.0 negative manual Pn 5.47 0
IV.CGRP.HHZ. 2019-01-20T21:18:24.15 3.0 undecidable manual P 0
IV.VARN.HHZ. 2019-01-20T21:18:22.12 3.0 undecidable manual P 0
ST.DOSS.HNE. 2019-01-20T21:18:20.48 0.6 undecidable manual P 333 1.626 38 0.61 33
IV.MPAG.EHZ. 2019-01-20T21:18:20.32 1.0 undecidable manual S 154 0.8849 50 0.76 20
IV.VARA.EHZ. 2019-01-20T21:18:20.76 3.0 undecidable manual P 0
IV.CTI.HHZ. 2019-01-20T21:18:19.39 3.0 undecidable manual P 0
IV.MF5.EHZ. 2019-01-20T21:18:19.04 1.0 positive manual P 148 1.6916 38 -1.73 9
IV.FDMO.HHZ. 2019-01-20T21:18:17.58 1.0 undecidable manual P 156 1.5226 50 -0.63 17
IV.PII.HHZ. 2019-01-20T21:18:16.62 3.0 undecidable manual P -0.52 0
IV.BDI.HHZ. 2019-01-20T21:18:14.82 3.0 positive manual P -0.07 0
IV.CSNT.HHZ. 2019-01-20T21:18:13.15 1.0 positive manual P 216 1.1709 50 0.96 17
IV.OSSC.HHZ. 2019-01-20T21:18:12.96 0.3 undecidable manual P 218 1.1502 50 1.14 48
IV.FOSV.EHZ. 2019-01-20T21:18:12.40 0.6 undecidable manual P 161 1.1961 50 -0.22 44
IV.ATMI.HHZ. 2019-01-20T21:18:12.03 0.6 positive manual P 179 1.0945 50 1.15 32
IV.MTCR.EHZ. 2019-01-20T21:18:11.32 3.0 undecidable manual P 0.73 0
IV.ATVO.HHZ. 2019-01-20T21:18:10.52 1.0 negative manual P 173 1.054 50 0.34 22
IV.SSFR.HHZ. 2019-01-20T21:18:10.19 0.1 negative manual P 158 1.0684 50 -0.25 90
IV.CAFI.HHZ. 2019-01-20T21:18:10.83 0.6 positive manual P 190 1.1161 50 -0.41 43
IV.COR1.EHZ. 2019-01-20T21:18:09.07 1.0 undecidable manual P 145 0.9695 50 0.33 23
IV.ATPI.EHZ. 2019-01-20T21:18:09.32 0.6 positive manual P 173 0.9857 50 0.31 45
IV.MPAG.EHZ. 2019-01-20T21:18:07.42 0.1 undecidable manual P 154 0.8849 50 0.13 96
IV.FRON.EHZ. 2019-01-20T21:18:06.74 3.0 negative manual P 0.9776 -2.14 0
IV.CRE.HHZ. 2019-01-20T21:18:05.95 1.0 positive manual P 194 0.8346 50 -0.48 23
IV.PESA.HHZ. 2019-01-20T21:18:04.22 1.0 negative manual P 138 0.6547 50 0.87 20
IV.RUFI.EHZ. 2019-01-20T21:18:04.85 0.6 undecidable manual P 221 0.786 50 -0.75 41
IV.PARC.HHZ. 2019-01-20T21:18:04.07 0.6 undecidable manual P 180 0.7806 50 -1.43 30
IV.CPGN.EHZ. 2019-01-20T21:18:02.92 0.6 negative manual P 174 0.6313 50 -0.03 52
IV.LMD.HHZ. 2019-01-20T21:18:00.11 1.0 undecidable manual P 227 0.5144 50 -0.84 21
IV.BRSN.EHZ. 2019-01-20T21:17:59.00 0.6 undecidable manual S 217 0.1808 115 0.76 46
IV.BRIS.HHZ. 2019-01-20T21:17:58.80 1.0 undecidable manual P 239 0.3903 50 -0.04 27
IV.BRSN.EHZ. 2019-01-20T21:17:54.41 0.1 undecidable manual P 217 0.1808 115 -0.58 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRSN.EHN. ML:1.9 0.0006436247 0.2432 AML other m 2019-01-20T21:17:59.16
IV.BRSN.HNN. ML:2.2 0.00112055035 0.2304 AML other m 2019-01-20T21:17:59.16
IV.BRSN.EHE. ML:2.2 0.0011082035 0.2048 AML other m 2019-01-20T21:17:59.16
IV.BRSN.HNE. ML:1.9 0.0005851003 0.1664 AML other m 2019-01-20T21:17:59.07
IV.CPGN.HNE. ML:1.9 0.000123772 0.6656 AML other m 2019-01-20T21:18:11.59
IV.PARC.HHN. ML:1.4 3.034994E-5 0.2176 AML other m 2019-01-20T21:18:21.38
IV.PARC.HHE. ML:1.2 1.8539598E-5 0.2048 AML other m 2019-01-20T21:18:21.75
IV.PESA.HHE. ML:2.2 0.0002290736 0.2048 AML other m 2019-01-20T21:18:17.54
IV.PESA.HHN. ML:2.3 0.00032882465 0.1408 AML other m 2019-01-20T21:18:16.45
IV.CRE.HHN. ML:1.7 5.6824085E-5 0.4992 AML other m 2019-01-20T21:18:20.39
IV.CRE.HHE. ML:1.6 3.9518155E-5 0.6272 AML other m 2019-01-20T21:18:24.26
IV.FRON.EHN. ML:1.9 6.267131E-5 0.2816 AML other m 2019-01-20T21:18:23.77
IV.FRON.EHE. ML:1.5 3.148497E-5 0.2176 AML other m 2019-01-20T21:18:23.32
IV.MPAG.EHN. ML:1.8 6.0056845E-5 0.2816 AML other m 2019-01-20T21:18:21.90
IV.MPAG.EHE. ML:2 9.911346E-5 0.256 AML other m 2019-01-20T21:18:22.00
IV.ATPI.EHE. ML:1.5 2.877863E-5 0.3712 AML other m 2019-01-20T21:18:25.50
IV.ATPI.EHN. ML:1.6 3.4117425E-5 0.6912 AML other m 2019-01-20T21:18:28.34
IV.SSFR.HHE. ML:2.4 0.0001924716 0.2048 AML other m 2019-01-20T21:18:28.20
IV.SSFR.HNE. ML:2.5 0.0002213469 0.192 AML other m 2019-01-20T21:18:28.11
IV.SSFR.HHN. ML:2.2 0.0001368785 0.1792 AML other m 2019-01-20T21:18:28.02
IV.SSFR.HNN. ML:2.4 0.00021695705 0.768 AML other m 2019-01-20T21:18:11.56
IV.ATVO.HHE. ML:1.7 3.973473E-5 0.256 AML other m 2019-01-20T21:18:28.79
IV.CSNT.HHE. ML:1.5 1.872367E-5 0.4224 AML other m 2019-01-20T21:18:34.73
IV.CSNT.HHN. ML:1.5 2.144247E-5 0.576 AML other m 2019-01-20T21:18:32.10
IV.BDI.HHN. ML:1.6 2.2713375E-5 0.3584 AML other m 2019-01-20T21:18:34.41
IV.BDI.HHE. ML:1.6 2.4491518E-5 0.3968 AML other m 2019-01-20T21:18:41.40
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