Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 12-08-2020 and time 19:13:47 (UTC) in region 2 km SE Premilcuore (FC)

A magnitude ML 1.4 earthquake occured in region: 2 km SE Premilcuore (FC), on

  • 12-08-2020 19:13:47 (UTC)
  • 12-08-2020 21:13:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.9660, 11.7870 at 8 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Premilcuore FC 2 799 799
Portico e San Benedetto FC 7 756 1555
Santa Sofia FC 10 4136 5691
Galeata FC 11 2516 8207
Rocca San Casciano FC 12 1910 10117
Civitella di Romagna FC 13 3786 13903
Tredozio FC 13 1212 15115
San Godenzo FI 14 1167 16282
Marradi FI 19 3139 19421
Dovadola FC 19 1653 21074
Bagno di Romagna FC 19 6026 27100

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km SW of Forlì (117913 inhabitants)
37 Km S of Faenza (58541 inhabitants)
41 Km W of Cesena (96758 inhabitants)
44 Km S of Imola (69797 inhabitants)
48 Km E of Firenze (382808 inhabitants)
54 Km E of Scandicci (50609 inhabitants)
56 Km N of Arezzo (99543 inhabitants)
56 Km E of Prato (191150 inhabitants)
60 Km SW of Ravenna (159116 inhabitants)
63 Km W of Rimini (147750 inhabitants)
69 Km SE of Bologna (386663 inhabitants)
70 Km E of Pistoia (90315 inhabitants)
81 Km NE of Siena (53903 inhabitants)
91 Km W of Pesaro (94582 inhabitants)
98 Km S of Ferrara (133155 inhabitants)
100 Km W of Fano (60888 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
Bulletin
Rev1000 		ML 1.4 2020-08-12
19:13:47		 43.9657 11.7872 8 2021-02-26
15:54:52		 Bollettino Sismico Italiano INGV 86375311
Reviewed
Rev100 		ML 1.5 2020-08-12
19:13:47		 43.9648 11.7912 8 2020-08-12
19:24:31		 Sala Sismica INGV-Roma 81916621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-12 19:13:47 ± 0.08
Latitude 43.9657 ± 0.0045
Longitude 11.7872 ± 0.0062
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86375311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 522
Semi-minor axis of confidence ellipse (meter) 121
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 226
Circular confidence region, given by single value of horizontal uncertainty (meter) 520.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.72036
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 81916621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-12 19:24:31

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 86375311
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-26 15:23:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SENA.HHZ. 2020-08-12T19:15:30.09 3.0 undecidable manual Sn -4.52 0
SL.LJU.BHZ. 2020-08-12T19:15:21.37 3.0 undecidable manual Sg 13.34 0
IV.MCRV.HHZ. 2020-08-12T19:15:02.90 3.0 undecidable manual Pg 14 0
IV.POFI.HHZ. 2020-08-12T19:15:02.50 3.0 undecidable manual Sn -0.67 0
GU.RNCA.HHZ. 2020-08-12T19:14:56.50 3.0 undecidable manual Sg 5.89 0
ST.OZOL.EHZ. 2020-08-12T19:14:55.57 3.0 undecidable manual Sn -4.35 0
IV.CMPR.HHZ. 2020-08-12T19:14:53.13 3.0 undecidable manual Pn -1.77 0
IV.FREG.EHZ. 2020-08-12T19:14:49.96 3.0 undecidable manual Sn 0.35 0
IV.GAVE.EHZ. 2020-08-12T19:14:36.38 3.0 undecidable manual S 1.24 0
IV.ROSPO.HHZ. 2020-08-12T19:14:34.02 3.0 positive manual Pn 1.21 0
IV.GIUL.HHZ. 2020-08-12T19:14:30.21 3.0 negative manual Pn 0.64 0
IV.ATMI.HHZ. 2020-08-12T19:14:12.67 0.6 undecidable manual S 151 79.9644 50 0.81 35
IV.CAFI.HHZ. 2020-08-12T19:14:10.32 0.6 undecidable manual S 168 72.0723 50 0.57 39
IV.CSNT.HHZ. 2020-08-12T19:14:09.10 0.3 undecidable manual S 216 67.5768 50 0.53 60
IV.MPPT.EHZ. 2020-08-12T19:14:05.78 0.6 undecidable manual S 269 55.6998 50 0.41 42
IV.PARC.HHZ. 2020-08-12T19:14:03.96 0.6 undecidable manual S 134 50.4162 50 -0.02 46
IV.MOCL.EHZ. 2020-08-12T19:14:03.53 0.3 undecidable manual S 275 48.618 50 0.04 69
IV.ATMI.HHZ. 2020-08-12T19:14:01.70 0.3 undecidable manual P 151 79.9644 50 0.21 63
IV.CRE.HHZ. 2020-08-12T19:14:01.06 0.6 undecidable manual S 161 40.626 50 -0.31 44
IV.VISG.HHZ. 2020-08-12T19:14:00.46 0.6 undecidable manual S 312 37.4292 50 -0.06 47
IV.CAFI.HHZ. 2020-08-12T19:14:00.22 0.3 undecidable manual P 168 72.0723 50 -0.05 66
IV.CSNT.HHZ. 2020-08-12T19:13:59.93 0.6 undecidable manual P 216 67.5768 50 0.34 42
IV.SEI.HHZ. 2020-08-12T19:13:59.77 0.6 undecidable manual S 286 35.5422 102 -0.17 46
IV.BRIS.HHZ. 2020-08-12T19:13:58.45 0.3 undecidable manual S 357 28.749 105 0.81 58
IV.RONT.HHZ. 2020-08-12T19:13:57.87 0.3 undecidable manual S 276 28.4493 105 0.33 68
IV.MPPT.EHZ. 2020-08-12T19:13:57.64 0.3 undecidable manual P 269 55.6998 50 -0.1 68
IV.PARC.HHZ. 2020-08-12T19:13:56.44 0.1 undecidable manual P 134 50.4162 50 -0.5 84
IV.MTRZ.HNZ. 2020-08-12T19:13:56.45 0.3 undecidable manual P 323 48.1185 50 -0.13 68
IV.MOCL.EHZ. 2020-08-12T19:13:56.49 0.3 undecidable manual P 275 48.618 50 -0.16 68
IV.CPGN.EHZ. 2020-08-12T19:13:56.79 0.6 undecidable manual P 113 46.4202 50 0.48 42
IV.RUFI.EHZ. 2020-08-12T19:13:56.64 0.3 undecidable manual S 238 26.3514 106 -0.19 70
IV.ASQU.HHZ. 2020-08-12T19:13:54.51 0.3 undecidable manual S 179 18.7701 112 0.17 71
IV.VISG.HHZ. 2020-08-12T19:13:54.47 0.1 undecidable manual P 312 37.4292 50 -0.47 86
IV.SEI.HHZ. 2020-08-12T19:13:54.18 0.1 undecidable manual P 286 35.5422 102 -0.43 87
IV.CRE.HHZ. 2020-08-12T19:13:54.85 0.1 undecidable manual P 161 40.626 50 -0.58 83
IV.RONT.HHZ. 2020-08-12T19:13:53.30 0.1 undecidable manual P 276 28.4493 105 0.08 95
IV.BRIS.HHZ. 2020-08-12T19:13:53.35 0.1 undecidable manual P 357 28.749 105 0.07 95
IV.RINC.HHZ. 2020-08-12T19:13:53.90 0.6 undecidable manual S 239 16.872 115 0.16 48
IV.RUFI.EHZ. 2020-08-12T19:13:52.64 0.1 undecidable manual P 238 26.3514 106 -0.17 94
IV.RINC.HHZ. 2020-08-12T19:13:51.08 0.1 undecidable manual P 239 16.872 115 0.05 98
IV.SFI.HNZ. 2020-08-12T19:13:51.15 0.3 undecidable manual S 145 8.2806 133 -0.08 74
IV.ASQU.HHZ. 2020-08-12T19:13:51.39 0.1 undecidable manual P 179 18.7701 112 0.02 98
IV.SFI.HNZ. 2020-08-12T19:13:49.58 0.1 undecidable manual P 145 8.2806 133 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RINC.HHN. ML:1.4 0.00023899999999999998 0.44 AML other m 2020-08-12T19:13:54.32
IV.RINC.HHE. ML:1.5 0.00031346395 0.1152 AML other m 2020-08-12T19:13:54.34
IV.ASQU.HHN. ML:1.8 0.000478108 0.1792 AML other m 2020-08-12T19:13:55.10
IV.ASQU.HHE. ML:1.7 0.0004455 0.14 AML other m 2020-08-12T19:13:55.13
IV.RUFI.EHN. ML:1.3 0.000105960625 0.4096 AML other m 2020-08-12T19:13:57.06
IV.RUFI.EHE. ML:1.3 0.000104920715 0.3456 AML other m 2020-08-12T19:13:56.00
IV.BRIS.HHE. ML:1.7 0.00028500000000000004 0.24 AML other m 2020-08-12T19:13:58.62
IV.BRIS.HHN. ML:1.8 0.000296 0.3 AML other m 2020-08-12T19:13:58.74
IV.RONT.HHE. ML:1.7 0.00028631470000000005 0.128 AML other m 2020-08-12T19:13:59.18
IV.RONT.HHN. ML:1.7 0.000264 0.36 AML other m 2020-08-12T19:13:59.53
IV.SEI.HHE. ML:1.5 0.00014050000000000003 0.34 AML other m 2020-08-12T19:14:00.14
IV.VISG.HHE. ML:1.1 0.000043349999999999997 0.98 AML other m 2020-08-12T19:14:01.17
IV.CRE.HHN. ML:1.7 0.000175 0.22 AML other m 2020-08-12T19:14:01.33
IV.VISG.HHN. ML:1.1 0.00005153903 0.128 AML other m 2020-08-12T19:14:01.50
IV.SEI.HHN. ML:1.7 0.00022087475 0.448 AML other m 2020-08-12T19:14:01.91
IV.CRE.HHE. ML:1.6 0.0001245 0.22 AML other m 2020-08-12T19:14:02.09
IV.PARC.HHE. ML:1.0 0.0000236 1.48 AML other m 2020-08-12T19:14:05.91
IV.MPPT.EHN. ML:1.1 0.000028441125 0.256 AML other m 2020-08-12T19:14:06.16
IV.PARC.HHN. ML:1.1 0.00003145 0.64 AML other m 2020-08-12T19:14:06.44
IV.MPPT.EHE. ML:0.9 0.00001975 0.8 AML other m 2020-08-12T19:14:12.05
IV.CSNT.HHE. ML:1.2 0.00002355 0.34 AML other m 2020-08-12T19:14:12.20
IV.CAFI.HHN. ML:1.0 0.000014383460000000001 0.32 AML other m 2020-08-12T19:14:12.63
IV.CAFI.HHE. ML:1.1 0.0000206 1.46 AML other m 2020-08-12T19:14:12.06
IV.CSNT.HHN. ML:1.4 0.000041 0.42 AML other m 2020-08-12T19:14:13.09
IV.FOSV.EHN. ML:1.5 0.000030062595 0.2688 AML other m 2020-08-12T19:14:13.13
IV.FOSV.EHE. ML:1.4 0.0000201 0.58 AML other m 2020-08-12T19:14:14.61
IV.ATMI.HHE. ML:1.5 0.00004625 0.36 AML other m 2020-08-12T19:14:16.41
IV.ATMI.HHN. ML:1.7 0.00006685 0.42 AML other m 2020-08-12T19:14:18.07
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