Earthquake with magnitude of ML 1.6 on date 11-09-2019 and time 15:30:58 (Italy) in region 1 km SW Forlimpopoli (FC)

A magnitude ML 1.6 earthquake occured in region: 1 km SW Forlimpopoli (FC), on

  • 11-09-2019 13:30:58 (UTC)
  • 11-09-2019 15:30:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.18, 12.12 at 34 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
Forlimpopoli FC 1 13290 13290
Bertinoro FC 4 11059 24349
Meldola FC 8 9970 34319
Forlì FC 8 117913 152232
Cesena FC 11 96758 248990
Castrocaro Terme e Terra del Sole FC 13 6426 255416
Predappio FC 14 6346 261762
Montiano FC 18 1716 263478
Gambettola FC 19 10660 274138
Dovadola FC 20 1653 275791

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km SE of Forlì (117913 inhabitants)
11 Km W of Cesena (96758 inhabitants)
22 Km SE of Faenza (58541 inhabitants)
27 Km S of Ravenna (159116 inhabitants)
37 Km SE of Imola (69797 inhabitants)
38 Km W of Rimini (147750 inhabitants)
70 Km W of Pesaro (94582 inhabitants)
71 Km E of Bologna (386663 inhabitants)
81 Km W of Fano (60888 inhabitants)
82 Km N of Arezzo (99543 inhabitants)
83 Km NE of Firenze (382808 inhabitants)
83 Km SE of Ferrara (133155 inhabitants)
88 Km E of Prato (191150 inhabitants)
88 Km NE of Scandicci (50609 inhabitants)
100 Km E of Pistoia (90315 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 1.6 2019-09-11
13:30:58
44.18 12.12 35 2019-09-11
13:43:26
Sala Sismica INGV-Roma 72313311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-11 13:30:58 ± 0.37
Latitude 44.18 ± 0.01
Longitude 12.12 ± 0.02
Depth (km) 35 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 72313311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1703
Semi-minor axis of confidence ellipse (meter) 673
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 215
Circular confidence region, given by single value of horizontal uncertainty (meter) 1700
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 235
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.25541
Epicentral distance of station farthest from the epicenter (degree) 0.71226
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 72313311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-11 13:43:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2019-09-11T13:31:23.24 0.3 undecidable manual S 155 0.7123 109 0.6 55
IV.PARC.HHZ. 2019-09-11T13:31:17.81 0.3 undecidable manual S 171 0.5396 115 -0.1 70
IV.ASQU.HHZ. 2019-09-11T13:31:15.71 0.3 undecidable manual S 212 0.4515 120 0.12 69
IV.LMD.HHZ. 2019-09-11T13:31:12.09 0.3 undecidable manual S 251 0.313 131 -0.14 77
IV.PIEI.HHZ. 2019-09-11T13:31:12.03 0.3 undecidable manual P 155 0.7123 109 -0.2 70
IV.PARC.HHZ. 2019-09-11T13:31:09.06 0.1 undecidable manual P 171 0.5396 115 -0.44 92
IV.ASQU.HHZ. 2019-09-11T13:31:08.15 0.1 undecidable manual P 212 0.4515 120 -0.02 99
IV.CPGN.EHZ. 2019-09-11T13:31:07.54 0.1 undecidable manual P 159 0.4074 123 0.02 100
IV.LMD.HHZ. 2019-09-11T13:31:06.10 0.1 undecidable manual P 251 0.313 131 -0.12 100
IV.BRIS.HHZ. 2019-09-11T13:31:05.98 0.1 undecidable manual P 280 0.2554 137 0.46 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HNE. ML:1.6 0.000124528 0.5312 AML other m 2019-09-11T13:31:22.64
IV.LMD.HHE. ML:1.9 0.0002181341 0.16 AML other m 2019-09-11T13:31:12.81
IV.LMD.HHN. ML:2 0.0002759164 0.1408 AML other m 2019-09-11T13:31:12.98
IV.ASQU.HHE. ML:1.2 3.6360065E-5 0.16 AML other m 2019-09-11T13:31:16.30
IV.ASQU.HHN. ML:1.5 6.7153825E-5 0.48 AML other m 2019-09-11T13:31:16.30
IV.PARC.HHE. ML:1.5 4.8082055E-5 0.2368 AML other m 2019-09-11T13:31:17.77
IV.PARC.HHN. ML:1.5 6.026305E-5 0.3648 AML other m 2019-09-11T13:31:18.89
IV.PIEI.HHE. ML:1.6 4.934675E-5 0.2368 AML other m 2019-09-11T13:31:23.68
IV.PIEI.HHN. ML:1.4 3.026818E-5 0.384 AML other m 2019-09-11T13:31:23.24
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