INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.2 on date 12-02-2019 and time 07:45:55 (Italy) in region 1 km S Portico e San Benedetto (FC)

A magnitude ML 1.2 earthquake occured in region: 1 km S Portico e San Benedetto (FC), on

  • 12-02-2019 06:45:55 (UTC)
  • 12-02-2019 07:45:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.02, 11.78 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
Portico e San Benedetto FC 1 756 756
Premilcuore FC 5 799 1555
Rocca San Casciano FC 7 1910 3465
Tredozio FC 7 1212 4677
Galeata FC 11 2516 7193
Civitella di Romagna FC 13 3786 10979
Santa Sofia FC 13 4136 15115
Dovadola FC 14 1653 16768
Marradi FI 15 3139 19907
Modigliana FC 15 4560 24467
San Godenzo FI 16 1167 25634
Predappio FC 19 6346 31980

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km S of Faenza (58541 inhabitants)
31 Km SW of Forlì (117913 inhabitants)
38 Km S of Imola (69797 inhabitants)
39 Km W of Cesena (96758 inhabitants)
50 Km NE of Firenze (382808 inhabitants)
56 Km SW of Ravenna (159116 inhabitants)
56 Km NE of Scandicci (50609 inhabitants)
57 Km E of Prato (191150 inhabitants)
62 Km N of Arezzo (99543 inhabitants)
63 Km W of Rimini (147750 inhabitants)
63 Km SE of Bologna (386663 inhabitants)
70 Km E of Pistoia (90315 inhabitants)
86 Km NE of Siena (53903 inhabitants)
92 Km W of Pesaro (94582 inhabitants)
92 Km S of Ferrara (133155 inhabitants)
97 Km SE of Modena (184973 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 2019-02-12
06:45:55
44.02 11.78 9 2019-02-12
06:52:41
Sala Sismica INGV-Roma 65426231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-12 06:45:55 ± 0.11
Latitude 44.02 ± 0.00
Longitude 11.78 ± 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 65426231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1004
Semi-minor axis of confidence ellipse (meter) 182
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 71
Circular confidence region, given by single value of horizontal uncertainty (meter) 1000
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 160
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.07914
Epicentral distance of station farthest from the epicenter (degree) 0.41818
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 65426231
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-12 06:52:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ASQU.HHZ. 2019-02-12T06:46:04.87 0.6 undecidable manual S 178 0.2221 110 0.31 47
IV.CRE.HHE. 2019-02-12T06:46:04.09 0.1 undecidable manual P 163 0.4182 50 -0.26 91
IV.BRIS.HHZ. 2019-02-12T06:46:04.33 0.3 undecidable manual S 357 0.2059 111 0.36 69
IV.SEI.HHE. 2019-02-12T06:46:02.62 0.1 undecidable manual P 277 0.3058 50 0.2 94
IV.SFI.EHZ. 2019-02-12T06:46:01.24 0.3 undecidable manual S 157 0.1232 123 0.11 74
IV.RUFI.EHZ. 2019-02-12T06:46:01.69 0.1 positive manual P 227 0.2662 107 0.04 98
IV.BRIS.HHZ. 2019-02-12T06:46:00.25 1.0 positive manual P 357 0.2059 111 -0.13 24
IV.ASQU.HHZ. 2019-02-12T06:46:00.71 0.6 negative manual P 178 0.2221 110 -0.01 50
IV.LMD.HHZ. 2019-02-12T06:45:59.67 0.3 undecidable manual S 318 0.0791 135 -0.11 75
IV.SFI.EHZ. 2019-02-12T06:45:58.68 0.1 negative manual P 157 0.1232 123 -0.06 100
IV.LMD.HHZ. 2019-02-12T06:45:57.66 0.1 negative manual P 318 0.0791 135 -0.3 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHN. ML:1.3 0.00028 0.48 AML other m 2019-02-12T06:45:59.92
IV.LMD.HHE. ML:1.1 0.0001735 0.2 AML other m 2019-02-12T06:45:59.85
IV.SFI.EHE. ML:1.2 0.0001815 0.2 AML other m 2019-02-12T06:46:01.43
IV.SFI.EHN. ML:1.2 0.0001545 0.78 AML other m 2019-02-12T06:46:01.00
IV.BRIS.HHN. ML:1.1 8.98E-5 0.46 AML other m 2019-02-12T06:46:04.80
IV.BRIS.HHE. ML:1.1 8.29E-5 0.68 AML other m 2019-02-12T06:46:04.65
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