Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 21-08-2019 and time 07:37:06 (Italy) in region 3 km E Predappio (FC)

A magnitude ML 1.3 earthquake occured in region: 3 km E Predappio (FC), on

  • 21-08-2019 05:37:06 (UTC)
  • 21-08-2019 07:37:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1, 12.01 at 34 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
Predappio FC 3 6346 6346
Meldola FC 5 9970 16316
Castrocaro Terme e Terra del Sole FC 10 6426 22742
Dovadola FC 10 1653 24395
Bertinoro FC 11 11059 35454
Civitella di Romagna FC 12 3786 39240
Galeata FC 14 2516 41756
Forlimpopoli FC 14 13290 55046
Rocca San Casciano FC 14 1910 56956
Forlì FC 14 117913 174869
Santa Sofia FC 19 4136 179005
Modigliana FC 19 4560 183565
Cesena FC 19 96758 280323

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km S of Forlì (117913 inhabitants)
19 Km W of Cesena (96758 inhabitants)
23 Km SE of Faenza (58541 inhabitants)
37 Km SE of Imola (69797 inhabitants)
39 Km SW of Ravenna (159116 inhabitants)
45 Km W of Rimini (147750 inhabitants)
69 Km SE of Bologna (386663 inhabitants)
71 Km NE of Firenze (382808 inhabitants)
71 Km N of Arezzo (99543 inhabitants)
75 Km W of Pesaro (94582 inhabitants)
76 Km E of Scandicci (50609 inhabitants)
77 Km E of Prato (191150 inhabitants)
86 Km W of Fano (60888 inhabitants)
88 Km SE of Ferrara (133155 inhabitants)
89 Km E of Pistoia (90315 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
Rev 1000 ML 1.3 2019-08-21
05:37:06		 44.1 12.01 34 2019-11-13
14:31:04		 Bollettino Sismico Italiano INGV 73138611
Rev 100 ML 1.5 2019-08-21
05:37:06		 44.11 12.15 10 2019-08-21
05:57:59		 Sala Sismica INGV-Roma 71670351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-21 05:37:06 ± 0.22
Latitude 44.10 ± 0.01
Longitude 12.01 ± 0.02
Depth (km) 34 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 73138611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1264
Semi-minor axis of confidence ellipse (meter) 763
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 241
Circular confidence region, given by single value of horizontal uncertainty (meter) 1260
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 197
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.47664
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 73138611
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-08 14:48:55

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 71670351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-21 05:57:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
AC.VLO.HHZ. 2019-08-21T05:38:58.41 3.0 undecidable manual Pg 17.139999 0
CR.STON.BHZ. 2019-08-21T05:38:50.88 3.0 undecidable manual Sn -9.12 0
GU.STV.HHZ. 2019-08-21T05:38:49.47 3.0 undecidable manual Sn 4 0
IV.ZONE.HHZ. 2019-08-21T05:38:13.96 3.0 undecidable manual Sn -2.61 0
IV.VCEL.EHZ. 2019-08-21T05:38:06.01 3.0 undecidable manual Sg -0.55 0
IV.MRLC.HHZ. 2019-08-21T05:38:05.06 3.0 undecidable manual Pn -2.88 0
CR.ZAG.BHZ. 2019-08-21T05:38:02.80 3.0 undecidable manual Pg 4.82 0
CH.BERNI.HHZ. 2019-08-21T05:38:00.34 3.0 negative manual Pg 7.23 0
IV.SGTA.HHZ. 2019-08-21T05:37:58.25 3.0 undecidable manual Pn -4.78 0
IV.FOSV.EHZ. 2019-08-21T05:37:32.85 3.0 undecidable manual S -1.42 0
IV.NDIM.HNZ. 2019-08-21T05:37:30.20 3.0 positive manual Pg -1.21 0
IV.PARC.HHE. 2019-08-21T05:37:24.41 0.6 undecidable manual S 160 0.4766 118 0.09 47
IV.ASQU.HHZ. 2019-08-21T05:37:21.26 0.6 undecidable manual S 208 0.3408 127 0.36 45
IV.SFI.EHZ. 2019-08-21T05:37:18.11 0.6 undecidable manual S 212 0.2257 140 -0.33 48
IV.BRIS.HHZ. 2019-08-21T05:37:18.34 0.3 undecidable manual S 306 0.2176 141 0.06 75
IV.LMD.HHZ. 2019-08-21T05:37:18.32 0.6 undecidable manual S 265 0.2203 141 0 50
IV.PARC.HHE. 2019-08-21T05:37:16.64 0.1 undecidable manual P 160 0.4766 118 -0.03 96
IV.CPGN.EHZ. 2019-08-21T05:37:15.05 0.3 undecidable manual P 143 0.3696 125 -0.05 73
IV.SSFR.HNZ. 2019-08-21T05:37:15.73 3.0 undecidable manual P -3.91 0
IV.ASQU.HHZ. 2019-08-21T05:37:14.89 0.1 undecidable manual P 208 0.3408 127 0.2 95
IV.BRIS.HHZ. 2019-08-21T05:37:13.14 0.1 undecidable manual P 306 0.2176 141 -0.04 100
IV.LMD.HHZ. 2019-08-21T05:37:13.16 0.1 undecidable manual P 265 0.2203 141 -0.04 100
IV.SFI.EHZ. 2019-08-21T05:37:13.10 0.1 undecidable manual P 212 0.2257 140 -0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHN. ML:1.5 0.0001115 0.5 AML other m 2019-08-21T05:37:18.65
IV.LMD.HHE. ML:1.8 0.000232 0.16 AML other m 2019-08-21T05:37:18.71
IV.SSFR.HHE. ML:2.2 0.000145 0.08 AML other m 2019-08-21T05:37:20.36
IV.ASQU.HHE. ML:1.1 3.245E-5 0.4 AML other m 2019-08-21T05:37:21.58
IV.ASQU.HHN. ML:0.9 1.995E-5 1.42 AML other m 2019-08-21T05:37:22.18
IV.SSFR.HHN. ML:2.6 0.0003535 0.08 AML other m 2019-08-21T05:37:22.44
IV.IMOL.HNE. ML:0 0.000849 0.96 AML other m 2019-08-21T05:37:29.92
IV.IMOL.HNN. ML:0 0.000933 0.54 AML other m 2019-08-21T05:37:31.20
IV.FOSV.EHE. ML:2 7.97E-5 1.14 AML other m 2019-08-21T05:37:32.92
IV.FOSV.EHN. ML:1.7 4.615E-5 1.14 AML other m 2019-08-21T05:37:33.93
IV.NDIM.HNE. ML:3.3 0.001248 0.94 AML other m 2019-08-21T05:37:50.20
IV.NDIM.HNN. ML:3.5 0.0020895 1.02 AML other m 2019-08-21T05:37:50.23
CR.ZAG.BHE. ML:3.5 0.000249 1 AML other m 2019-08-21T05:38:12.77
IV.ZONE.HHN. ML:2.3 4.525E-5 1.72 AML other m 2019-08-21T05:38:35.10
IV.ZONE.HHE. ML:2.3 4.56E-5 0.54 AML other m 2019-08-21T05:38:35.11
IV.MRLC.HHE. ML:3.5 0.000116 0.08 AML other m 2019-08-21T05:38:39.37
IV.MRLC.HHN. ML:3.5 0.00011205 0.08 AML other m 2019-08-21T05:38:39.33
CR.ZAG.BHN. ML:3.7 0.0003975 0.4 AML other m 2019-08-21T05:39:01.71
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