Earthquake with magnitude of ML 1.7 on date 21-08-2019 and time 11:39:41 (Italy) in region 6 km SE Premilcuore (FC)

A magnitude ML 1.7 earthquake occured in region: 6 km SE Premilcuore (FC), on

  • 21-08-2019 09:39:41 (UTC)
  • 21-08-2019 11:39:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.9310, 11.8100 at 7 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.

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 6 799 799
Santa Sofia FC 8 4136 4935
Portico e San Benedetto FC 11 756 5691
Galeata FC 11 2516 8207
Civitella di Romagna FC 13 3786 11993
Rocca San Casciano FC 15 1910 13903
San Godenzo FI 15 1167 15070
Bagno di Romagna FC 16 6026 21096
Pratovecchio Stia AR 17 5845 26941
Tredozio FC 17 1212 28153

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SW of Forlì (117913 inhabitants)
40 Km S of Faenza (58541 inhabitants)
42 Km SW of Cesena (96758 inhabitants)
48 Km S of Imola (69797 inhabitants)
48 Km E of Firenze (382808 inhabitants)
52 Km N of Arezzo (99543 inhabitants)
54 Km E of Scandicci (50609 inhabitants)
57 Km E of Prato (191150 inhabitants)
62 Km W of Rimini (147750 inhabitants)
63 Km SW of Ravenna (159116 inhabitants)
71 Km E of Pistoia (90315 inhabitants)
73 Km SE of Bologna (386663 inhabitants)
78 Km NE of Siena (53903 inhabitants)
89 Km W of Pesaro (94582 inhabitants)
98 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 1.7 2019-08-21
09:39:41
43.9307 11.8098 7 2019-11-13
14:31:04
Bollettino Sismico Italiano INGV 73138711
Reviewed
Rev100
ML 1.7 2019-08-21
09:39:41
43.9298 11.8092 7 2019-08-21
09:46:55
Sala Sismica INGV-Roma 71672341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-21 09:39:41 ± 0.08
Latitude 43.9307 ± 0.0036
Longitude 11.8098 ± 0.0062
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 73138711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 453
Semi-minor axis of confidence ellipse (meter) 346
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) 450.0
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 23
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.51891
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 73138711
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-08 14:53:54

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 71672341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-21 09:46:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EUCT.HNZ. 2019-08-21T09:40:25.01 3.0 positive manual Pg 5.97 0
SI.KOSI.HHZ. 2019-08-21T09:40:21.86 3.0 negative manual Pn -0.68 0
IV.NDIM.HNZ. 2019-08-21T09:40:03.83 3.0 undecidable manual P 0.37 0
IV.MPPT.EHZ. 2019-08-21T09:40:01.07 0.6 undecidable manual S 273 57.5979 50 0.32 43
IV.MOCL.EHZ. 2019-08-21T09:39:59.05 0.6 undecidable manual S 280 50.9157 50 0.08 45
IV.PARC.HHE. 2019-08-21T09:39:57.78 0.6 undecidable manual S 132 46.4202 50 0 46
IV.SEI.HHZ. 2019-08-21T09:39:55.48 0.6 undecidable manual S 291 38.5281 100 -0.06 47
IV.BRIS.HHZ. 2019-08-21T09:39:54.03 0.3 undecidable manual S 354 32.745 102 0.46 65
IV.CRE.HHE. 2019-08-21T09:39:54.59 0.6 undecidable manual S 162 36.4413 100 -0.21 45
IV.MPPT.EHZ. 2019-08-21T09:39:52.62 0.1 undecidable manual P 273 57.5979 50 -0.19 88
IV.RUFI.EHZ. 2019-08-21T09:39:51.53 0.3 undecidable manual S 247 26.1516 104 0.21 69
IV.MOCL.EHZ. 2019-08-21T09:39:51.51 0.3 undecidable manual P 280 50.9157 50 -0.27 65
IV.PARC.HHE. 2019-08-21T09:39:51.71 0.6 undecidable manual P 132 46.4202 50 0.61 40
IV.SEI.HHZ. 2019-08-21T09:39:49.36 0.1 negative manual P 291 38.5281 100 -0.44 86
IV.CRE.HHE. 2019-08-21T09:39:48.88 0.3 undecidable manual P 162 36.4413 100 -0.5 64
IV.ASQU.HHZ. 2019-08-21T09:39:48.06 0.3 undecidable manual S 186 14.9739 114 0.41 68
IV.BRIS.HHZ. 2019-08-21T09:39:48.64 0.1 undecidable manual P 354 32.745 102 -0.03 95
IV.LMD.HHZ. 2019-08-21T09:39:48.80 0.6 undecidable manual S 333 18.2706 110 0.1 48
IV.RUFI.EHZ. 2019-08-21T09:39:47.37 0.1 undecidable manual P 247 26.1516 104 0.01 96
IV.ASQU.HHZ. 2019-08-21T09:39:45.49 0.3 undecidable manual P 186 14.9739 114 0.25 70
IV.LMD.HHZ. 2019-08-21T09:39:45.76 0.1 undecidable manual P 333 18.2706 110 -0.09 96
IV.SFI.EHZ. 2019-08-21T09:39:44.57 0.3 undecidable manual S 134 4.0959 148 -0.12 73
IV.SFI.EHZ. 2019-08-21T09:39:43.53 0.1 undecidable manual P 134 4.0959 148 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHN. ML:1.8 0.0004948536500000001 1.7824 AML other m 2019-08-21T09:39:48.96
IV.LMD.HHE. ML:1.7 0.00041829110000000003 0.1408 AML other m 2019-08-21T09:39:49.10
IV.BRIS.HHE. ML:1.9 0.00032578425 0.2816 AML other m 2019-08-21T09:39:54.36
IV.BRIS.HNE. ML:1.8 0.00032221865 0.3136 AML other m 2019-08-21T09:39:54.37
IV.BRIS.HHN. ML:1.8 0.000290639 0.2176 AML other m 2019-08-21T09:39:54.50
IV.BRIS.HNN. ML:1.8 0.00030097825 0.6016 AML other m 2019-08-21T09:39:54.62
IV.SEI.HHE. ML:1.8 0.00022525165 0.2176 AML other m 2019-08-21T09:39:56.48
IV.SEI.HHN. ML:2.0 0.00040833344999999997 1.6608 AML other m 2019-08-21T09:39:58.86
IV.MOCL.EHE. ML:1.1 0.00003476924 0.16 AML other m 2019-08-21T09:39:59.23
IV.MOCL.EHN. ML:1.2 0.000046749335000000006 1.8144 AML other m 2019-08-21T09:39:59.93
IV.MPPT.EHN. ML:1.4 0.00004971062 0.3776 AML other m 2019-08-21T09:40:01.48
IV.MPPT.EHE. ML:1.1 0.000029757639999999997 0.3456 AML other m 2019-08-21T09:40:01.61
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