Earthquake with magnitude of ML 1.2 on date 16-03-2019 and time 09:22:32 (UTC) in region 4 km E Riolo Terme (RA)

A magnitude ML 1.2 earthquake occured in region: 4 km E Riolo Terme (RA), on

  • 16-03-2019 09:22:32 (UTC)
  • 16-03-2019 10:22:32 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.28, 11.77 at 26 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
Riolo Terme RA 4 5720 5720
Castel Bolognese RA 5 9554 15274
Brisighella RA 7 7639 22913
Imola BO 9 69797 92710
Faenza RA 9 58541 151251
Solarolo RA 10 4488 155739
Casalfiumanese BO 12 3438 159177
Bagnara di Romagna RA 13 2429 161606
Mordano BO 13 4760 166366
Casola Valsenio RA 14 2617 168983
Dozza BO 14 6652 175635
Modigliana FC 14 4560 180195
Borgo Tossignano BO 14 3288 183483
Fontanelice BO 17 1943 185426
Cotignola RA 18 7474 192900
Castel Guelfo di Bologna BO 18 4455 197355
Castrocaro Terme e Terra del Sole FC 19 6426 203781
Massa Lombarda RA 19 10653 214434
Lugo RA 19 32390 246824
Sant'Agata sul Santerno RA 19 2862 249686
Castel San Pietro Terme BO 19 20811 270497

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km SE of Imola (69797 inhabitants)
9 Km W of Faenza (58541 inhabitants)
23 Km W of Forlì (117913 inhabitants)
37 Km W of Ravenna (159116 inhabitants)
41 Km W of Cesena (96758 inhabitants)
41 Km SE of Bologna (386663 inhabitants)
63 Km S of Ferrara (133155 inhabitants)
68 Km W of Rimini (147750 inhabitants)
70 Km NE of Prato (191150 inhabitants)
70 Km NE of Firenze (382808 inhabitants)
75 Km NE of Scandicci (50609 inhabitants)
78 Km SE of Modena (184973 inhabitants)
78 Km E of Pistoia (90315 inhabitants)
88 Km S of Rovigo (51867 inhabitants)
89 Km SE of Carpi (70699 inhabitants)
91 Km N of Arezzo (99543 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 1.2 2019-03-16
09:22:32
44.28 11.77 27 2019-03-16
09:39:04
Sala Sismica INGV-Roma 66589361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-16 09:22:32 ± 0.39
Latitude 44.28 ± 0.01
Longitude 11.77 ± 0.06
Depth (km) 27 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66589361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 4356
Semi-minor axis of confidence ellipse (meter) 909
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 277
Circular confidence region, given by single value of horizontal uncertainty (meter) 4360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 187
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.48743
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 66589361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-16 09:39:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IT.ORP.HGZ. 2019-03-16T09:24:28.20 3.0 undecidable manual Sg 20.32 0
IV.PAOL.HHZ. 2019-03-16T09:24:22.94 3.0 undecidable manual Sg 15 0
IV.MNO.SHZ. 2019-03-16T09:24:22.40 3.0 undecidable manual Pg 19.32 0
IV.SPS2.HHZ. 2019-03-16T09:24:14.18 3.0 positive manual Pg 22.93 0
GU.TRAV.HHZ. 2019-03-16T09:24:00.68 3.0 undecidable manual Sn 0.47 0
TV.SU26.HHZ. 2019-03-16T09:23:54.39 3.0 positive manual Pn -0.98 0
CR.STON.BHZ. 2019-03-16T09:23:54.96 3.0 positive manual Pg 30.360001 0
IV.LPEL.HHZ. 2019-03-16T09:23:51.63 3.0 undecidable manual Sn 9.33 0
IX.SFL3.HNZ.01 2019-03-16T09:23:43.08 3.0 undecidable manual Pn 13.77 0
GU.RNCA.HHZ. 2019-03-16T09:23:41.52 3.0 undecidable manual Sg 4.07 0
IV.VBKN.HHZ. 2019-03-16T09:23:40.14 3.0 positive manual Pg 16.16 0
IV.VVLD.HHZ. 2019-03-16T09:23:40.90 3.0 undecidable manual Sn -2.22 0
IV.RCAV.EHZ. 2019-03-16T09:23:39.28 3.0 undecidable manual Sn -2.33 0
IV.EUCT.HNZ. 2019-03-16T09:23:30.60 3.0 undecidable manual Sn -4.64 0
GU.GBOS.HHZ. 2019-03-16T09:23:28.39 3.0 positive manual Pg 12.4 0
RF.GEPF.HHZ. 2019-03-16T09:23:15.50 3.0 negative manual Pg 23.98 0
GU.GRAM.HHZ. 2019-03-16T09:22:55.22 3.0 undecidable manual Pg 1.42 0
IV.ASQU.HHE. 2019-03-16T09:22:50.53 0.6 undecidable manual S 178 0.4874 110 0.65 40
IV.NDIM.HNZ. 2019-03-16T09:22:48.20 3.0 negative manual P 2.38 0
IV.SFI.EHZ. 2019-03-16T09:22:47.14 0.6 undecidable manual S 172 0.3831 116 0.11 48
IV.LMD.HHZ. 2019-03-16T09:22:42.80 0.6 undecidable manual S 193 0.2113 134 -0.02 50
IV.ASQU.HHE. 2019-03-16T09:22:42.50 0.1 undecidable manual P 178 0.4874 110 0.07 94
IV.IMOL.EHZ. 2019-03-16T09:22:41.12 0.6 undecidable manual S 345 0.0782 160 0.51 46
IV.SFI.EHZ. 2019-03-16T09:22:40.64 0.1 undecidable manual P 172 0.3831 116 -0.15 93
IV.BRIS.HHZ. 2019-03-16T09:22:39.94 0.6 undecidable manual S 183 0.0594 164 -0.5 46
IV.LMD.HHZ. 2019-03-16T09:22:38.29 0.1 undecidable manual P 193 0.2113 134 -0.06 98
IV.IMOL.EHZ. 2019-03-16T09:22:37.22 0.1 undecidable manual P 345 0.0782 160 0.14 100
IV.BRIS.HHZ. 2019-03-16T09:22:36.69 0.1 undecidable manual P 183 0.0594 164 -0.29 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHN. ML:1.1 5.48E-5 0.82 AML other m 2019-03-16T09:22:44.17
IV.BRIS.HHN. ML:1.4 0.000162 0.62 AML other m 2019-03-16T09:22:40.36
IV.LMD.HHE. ML:1.2 6.335E-5 0.14 AML other m 2019-03-16T09:22:43.35
IV.SFI.EHE. ML:1 2.7088725E-5 1.984 AML other m 2019-03-16T09:22:47.55
IV.SFI.EHN. ML:1 2.3533505E-5 1.6384 AML other m 2019-03-16T09:22:48.01
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