Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 01-11-2019 and time 20:23:34 (Italy) in region 4 km W Portico e San Benedetto (FC)

A magnitude ML 1.0 earthquake occured in region: 4 km W Portico e San Benedetto (FC), on

  • 01-11-2019 19:23:34 (UTC)
  • 01-11-2019 20:23:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.0230, 11.7300 at 8 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.

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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 4 756 756
Premilcuore FC 6 799 1555
Tredozio FC 6 1212 2767
Rocca San Casciano FC 10 1910 4677
Marradi FI 11 3139 7816
San Godenzo FI 14 1167 8983
Galeata FC 15 2516 11499
Modigliana FC 16 4560 16059
Santa Sofia FC 17 4136 20195
Dovadola FC 17 1653 21848
Civitella di Romagna FC 17 3786 25634
Palazzuolo sul Senio FI 18 1154 26788

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km SW of Faenza (58541 inhabitants)
33 Km SW of Forlì (117913 inhabitants)
37 Km S of Imola (69797 inhabitants)
43 Km W of Cesena (96758 inhabitants)
47 Km NE of Firenze (382808 inhabitants)
53 Km NE of Scandicci (50609 inhabitants)
53 Km E of Prato (191150 inhabitants)
58 Km SW of Ravenna (159116 inhabitants)
61 Km SE of Bologna (386663 inhabitants)
63 Km N of Arezzo (99543 inhabitants)
66 Km E of Pistoia (90315 inhabitants)
67 Km W of Rimini (147750 inhabitants)
85 Km NE of Siena (53903 inhabitants)
91 Km S of Ferrara (133155 inhabitants)
94 Km SE of Modena (184973 inhabitants)
96 Km W of Pesaro (94582 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 1.0 2019-11-01
19:23:34		 44.0233 11.7305 8 2019-11-01
19:31:34		 Sala Sismica INGV-Roma 73576871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-11-01 19:23:34 ± 0.09
Latitude 44.0233 ± 0.0036
Longitude 11.7305 ± 0.0063
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73576871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 550
Semi-minor axis of confidence ellipse (meter) 167
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 257
Circular confidence region, given by single value of horizontal uncertainty (meter) 550.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.05666
Epicentral distance of station farthest from the epicenter (degree) 0.43437
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:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 73576871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-11-01 19:31:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRE.HHZ. 2019-11-01T19:23:50.24 0.6 undecidable manual S 158 48.2184 50 0.24 45
IV.SEI.HHZ. 2019-11-01T19:23:45.20 0.6 undecidable manual S 277 29.8479 105 0.41 45
IV.RUFI.EHZ. 2019-11-01T19:23:44.00 0.6 undecidable manual S 221 27.1506 107 0.13 48
IV.ASQU.HHZ. 2019-11-01T19:23:43.41 0.3 undecidable manual S 169 25.5522 108 0.04 74
IV.BRIS.HHZ. 2019-11-01T19:23:42.74 0.3 undecidable manual S 7 22.4553 110 0.39 69
IV.CRE.HHZ. 2019-11-01T19:23:42.89 0.3 undecidable manual P 158 48.2184 50 -0.37 66
IV.SEI.HHZ. 2019-11-01T19:23:40.12 0.3 undecidable manual P 277 29.8479 105 -0.13 72
IV.SFI.EHZ. 2019-11-01T19:23:40.51 0.3 undecidable manual S 145 16.0728 117 0.19 73
IV.ASQU.HHZ. 2019-11-01T19:23:39.30 0.1 undecidable manual P 169 25.5522 108 -0.13 96
IV.RUFI.EHZ. 2019-11-01T19:23:39.67 0.3 undecidable manual P 221 27.1506 107 -0.04 73
IV.BRIS.HHZ. 2019-11-01T19:23:38.81 0.1 positive manual P 7 22.4553 110 -0.03 99
IV.SFI.EHZ. 2019-11-01T19:23:37.74 0.1 positive manual P 145 16.0728 117 0.08 99
IV.LMD.HHZ. 2019-11-01T19:23:37.35 0.3 undecidable manual S 343 6.2937 143 -0.28 72
IV.LMD.HHZ. 2019-11-01T19:23:36.00 0.1 undecidable manual P 343 6.2937 143 -0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHE. ML:1.6 0.0007059999999999999 0.16 AML other m 2019-11-01T19:23:37.48
IV.LMD.HHN. ML:1.5 0.000626 0.16 AML other m 2019-11-01T19:23:37.58
IV.SFI.EHE. ML:0.8 0.0000537 0.08 AML other m 2019-11-01T19:23:40.68
IV.SFI.EHN. ML:0.8 0.00006335000000000001 0.14 AML other m 2019-11-01T19:23:41.56
IV.BRIS.HHN. ML:0.8 0.0000442 1.42 AML other m 2019-11-01T19:23:42.09
IV.BRIS.HHE. ML:1.0 0.0000606 1.48 AML other m 2019-11-01T19:23:42.91
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download