Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 18-08-2019 and time 17:19:05 (Italy) in region 7 km SE Premilcuore (FC)

A magnitude ML 1.8 earthquake occured in region: 7 km SE Premilcuore (FC), on

  • 18-08-2019 15:19:05 (UTC)
  • 18-08-2019 17:19:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.9210, 11.8250 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.

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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
Santa Sofia FC 7 4136 4136
Premilcuore FC 7 799 4935
Galeata FC 11 2516 7451
Portico e San Benedetto FC 12 756 8207
Civitella di Romagna FC 13 3786 11993
Bagno di Romagna FC 14 6026 18019
Rocca San Casciano FC 16 1910 19929
San Godenzo FI 16 1167 21096
Pratovecchio Stia AR 17 5845 26941
Tredozio FC 19 1212 28153

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SW of Forlì (117913 inhabitants)
41 Km S of Faenza (58541 inhabitants)
41 Km SW of Cesena (96758 inhabitants)
49 Km E of Firenze (382808 inhabitants)
49 Km S of Imola (69797 inhabitants)
51 Km N of Arezzo (99543 inhabitants)
55 Km E of Scandicci (50609 inhabitants)
58 Km E of Prato (191150 inhabitants)
61 Km W of Rimini (147750 inhabitants)
63 Km SW of Ravenna (159116 inhabitants)
73 Km E of Pistoia (90315 inhabitants)
75 Km SE of Bologna (386663 inhabitants)
78 Km NE of Siena (53903 inhabitants)
87 Km W of Pesaro (94582 inhabitants)
96 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 1.8 2019-08-18
15:19:05		 43.9208 11.8247 7 2019-11-13
14:30:59		 Bollettino Sismico Italiano INGV 71814031
Reviewed
Rev100 		ML 1.9 2019-08-18
15:19:05		 43.9213 11.8323 7 2019-08-18
15:32:17		 Sala Sismica INGV-Roma 71607431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-18 15:19:05 ± 0.09
Latitude 43.9208 ± 0.0054
Longitude 11.8247 ± 0.0087
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 71814031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 719
Semi-minor axis of confidence ellipse (meter) 111
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 237
Circular confidence region, given by single value of horizontal uncertainty (meter) 720.0
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 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.02248
Epicentral distance of station farthest from the epicenter (degree) 0.47035
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 71607431
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-18 15:32:17

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 71814031
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-08-26 08:25:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MOCL.EHZ. 2019-08-18T15:19:22.66 0.3 undecidable manual S 281 52.2033 50 0.13 90
IV.PARC.HHZ. 2019-08-18T15:19:20.40 0.3 undecidable manual S 132 44.8218 50 -0.16 91
IV.CPGN.EHE. 2019-08-18T15:19:20.44 0.3 undecidable manual S 108 41.8248 50 0.69 79
IV.SEI.HHZ. 2019-08-18T15:19:19.14 0.6 undecidable manual S 292 40.0266 50 -0.13 61
IV.CRE.HHZ. 2019-08-18T15:19:17.49 0.3 undecidable manual S 163 35.0427 101 -0.12 93
IV.BRIS.HHZ. 2019-08-18T15:19:17.67 0.3 undecidable manual S 352 34.0437 102 0.4 88
IV.MOCL.EHZ. 2019-08-18T15:19:15.09 0.3 undecidable manual P 281 52.2033 50 -0.13 90
IV.RUFI.EHZ. 2019-08-18T15:19:15.07 0.6 undecidable manual S 250 26.8509 105 0.23 62
IV.IMOL.EHE. 2019-08-18T15:19:15.44 0.6 undecidable manual P 352 49.1175 50 0.71 51
IV.CPGN.EHE. 2019-08-18T15:19:13.84 0.3 undecidable manual P 108 41.8248 50 0.23 90
IV.PARC.HHZ. 2019-08-18T15:19:13.36 0.3 undecidable manual P 132 44.8218 50 -0.71 78
IV.LMD.HHZ. 2019-08-18T15:19:12.53 0.3 undecidable manual S 332 19.7691 109 0.04 97
IV.SEI.HHZ. 2019-08-18T15:19:12.81 0.3 undecidable manual P 292 40.0266 50 -0.53 84
IV.CRE.HHZ. 2019-08-18T15:19:11.87 0.3 undecidable manual P 163 35.0427 101 -0.5 86
IV.BRIS.HHZ. 2019-08-18T15:19:11.91 0.3 undecidable manual P 352 34.0437 102 -0.27 91
IV.ASQU.HHZ. 2019-08-18T15:19:11.40 0.3 undecidable manual S 192 14.0748 116 0.73 81
IV.RUFI.EHZ. 2019-08-18T15:19:10.75 0.3 undecidable manual P 250 26.8509 105 -0.03 96
IV.LMD.HHZ. 2019-08-18T15:19:09.21 0.3 undecidable manual P 332 19.7691 109 -0.21 94
IV.ASQU.HHZ. 2019-08-18T15:19:08.63 0.3 undecidable manual P 192 14.0748 116 0.26 94
IV.SFI.HNZ. 2019-08-18T15:19:07.58 0.3 undecidable manual S 135 2.4975 160 -0.22 97
IV.SFI.HNZ. 2019-08-18T15:19:06.66 0.3 undecidable manual P 135 2.4975 160 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SEI.HHE. ML:1.8 0.00025122485 0.2176 AML other m 2019-08-18T15:19:19.36
IV.SFI.HNN. ML:0.0 0.0054258905 0.128 AML other m 2019-08-18T15:19:07.68
IV.SFI.EHN. ML:0.0 0.005419569 0.1152 AML other m 2019-08-18T15:19:07.67
IV.SFI.HNE. ML:0.0 0.0034209484999999998 0.128 AML other m 2019-08-18T15:19:08.12
IV.SFI.EHE. ML:0.0 0.003452298 0.1408 AML other m 2019-08-18T15:19:08.12
IV.ASQU.HHE. ML:1.7 0.00060658835 0.1152 AML other m 2019-08-18T15:19:11.99
IV.ASQU.HHN. ML:1.9 0.0009612456 0.1792 AML other m 2019-08-18T15:19:11.69
IV.RUFI.EHN. ML:1.9 0.0005248321000000001 0.2176 AML other m 2019-08-18T15:19:15.32
IV.RUFI.EHE. ML:1.6 0.00021397895 0.128 AML other m 2019-08-18T15:19:15.17
IV.CRE.HHE. ML:1.4 0.00010702339 0.2304 AML other m 2019-08-18T15:19:19.82
IV.CRE.HHN. ML:2.1 0.0005133336 0.192 AML other m 2019-08-18T15:19:17.88
IV.BRIS.HNE. ML:1.9 0.00032733165 0.3328 AML other m 2019-08-18T15:19:17.74
IV.BRIS.HNN. ML:1.9 0.0003213331 0.4736 AML other m 2019-08-18T15:19:17.97
IV.BRIS.HHE. ML:1.9 0.0003539465 0.32 AML other m 2019-08-18T15:19:17.89
IV.BRIS.HHN. ML:1.9 0.0003710289 0.256 AML other m 2019-08-18T15:19:17.84
IV.SEI.HHN. ML:2.0 0.00038824085 0.2304 AML other m 2019-08-18T15:19:20.28
IV.PARC.HHN. ML:1.0 0.000028806715 0.2048 AML other m 2019-08-18T15:19:21.02
IV.PARC.HHE. ML:1.0 0.00002943954 0.2688 AML other m 2019-08-18T15:19:22.37
IV.MOCL.EHN. ML:1.4 0.00006636958 0.1536 AML other m 2019-08-18T15:19:23.01
IV.MOCL.EHE. ML:1.4 0.000071378535 0.1792 AML other m 2019-08-18T15:19:22.96
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