Earthquake with magnitude of ML 1.2 on date 31-07-2019 and time 17:55:49 (Italy) in region 3 km E Castrocaro Terme e Terra del Sole (FC)

A magnitude ML 1.2 earthquake occured in region: 3 km E Castrocaro Terme e Terra del Sole (FC), on

  • 31-07-2019 15:55:49 (UTC)
  • 31-07-2019 17:55:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.17, 11.98 at 10 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
Castrocaro Terme e Terra del Sole FC 3 6426 6426
Predappio FC 7 6346 12772
Meldola FC 8 9970 22742
Forlì FC 8 117913 140655
Dovadola FC 9 1653 142308
Forlimpopoli FC 12 13290 155598
Bertinoro FC 12 11059 166657
Modigliana FC 15 4560 171217
Faenza RA 16 58541 229758
Rocca San Casciano FC 16 1910 231668
Civitella di Romagna FC 18 3786 235454
Brisighella RA 18 7639 243093
Galeata FC 20 2516 245609

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km SW of Forlì (117913 inhabitants)
16 Km SE of Faenza (58541 inhabitants)
21 Km W of Cesena (96758 inhabitants)
30 Km SE of Imola (69797 inhabitants)
33 Km SW of Ravenna (159116 inhabitants)
48 Km W of Rimini (147750 inhabitants)
63 Km SE of Bologna (386663 inhabitants)
73 Km NE of Firenze (382808 inhabitants)
78 Km E of Prato (191150 inhabitants)
78 Km N of Arezzo (99543 inhabitants)
79 Km NE of Scandicci (50609 inhabitants)
80 Km W of Pesaro (94582 inhabitants)
80 Km SE of Ferrara (133155 inhabitants)
89 Km E of Pistoia (90315 inhabitants)
90 Km W of Fano (60888 inhabitants)
100 Km SE of Modena (184973 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 1.2 2019-07-31
15:55:49
44.17 11.98 10 2019-11-13
14:31:02
Bollettino Sismico Italiano INGV 72357231
Rev 100 ML 1.2 2019-07-31
15:55:49
44.18 11.94 10 2019-07-31
16:07:39
Sala Sismica INGV-Roma 71065261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-31 15:55:49 ± 0.57
Latitude 44.17 ± 0.01
Longitude 11.98 ± 0.04
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 72357231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2834
Semi-minor axis of confidence ellipse (meter) 850
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) 2830
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 243
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.48
Epicentral distance of station closest to the epicenter (degree) 0.16637
Epicentral distance of station farthest from the epicenter (degree) 0.42628
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 72357231
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-13 08:17:46

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 71065261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-31 16:07:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MTRZ.HNZ. 2019-07-31T15:56:05.25 0.6 undecidable manual S 290 0.4263 50 0.73 48
IV.SFI.EHZ. 2019-07-31T15:56:01.15 0.6 undecidable manual S 201 0.2806 50 0.94 38
IV.IMOL.HNZ. 2019-07-31T15:56:00.33 0.6 undecidable manual S 318 0.259 50 0.77 35
IV.MTRZ.HNZ. 2019-07-31T15:55:57.38 0.1 undecidable manual P 290 0.4263 50 -0.62 80
IV.LMD.HHZ. 2019-07-31T15:55:57.70 0.3 undecidable manual S 246 0.2185 111 -0.43 72
IV.BRIS.HHZ. 2019-07-31T15:55:56.34 0.6 undecidable manual S 290 0.1664 117 0.05 48
IV.SFI.EHZ. 2019-07-31T15:55:55.89 0.3 undecidable manual P 201 0.2806 50 0.38 67
IV.IMOL.HNZ. 2019-07-31T15:55:55.06 0.3 undecidable manual P 318 0.259 50 -0.07 72
IV.LMD.HHZ. 2019-07-31T15:55:53.93 0.1 negative manual P 246 0.2185 111 -0.37 100
IV.BRIS.HHZ. 2019-07-31T15:55:53.13 0.3 undecidable manual P 290 0.1664 117 -0.12 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HHN. ML:1 7.6204045E-5 0.1152 AML other m 2019-07-31T15:55:56.61
IV.BRIS.HHE. ML:1 7.791353E-5 0.2176 AML other m 2019-07-31T15:55:57.25
IV.LMD.HHE. ML:1.8 0.00040627365 0.1664 AML other m 2019-07-31T15:55:57.86
IV.LMD.HHN. ML:1.9 0.0004644591 1.8976 AML other m 2019-07-31T15:55:57.95
IV.BRIS.HNN. ML:1.5 0.000235476165 1.1872 AML other m 2019-07-31T15:55:59.19
IV.BRIS.HNE. ML:1.3 0.0001619604516 0.3808 AML other m 2019-07-31T15:55:59.28
IV.SFI.EHE. ML:0.7 2.2632475E-5 0.1408 AML other m 2019-07-31T15:56:01.57
IV.SFI.HNE. ML:1.2 7.93812775E-5 1.6032 AML other m 2019-07-31T15:56:03.92
IV.SFI.EHN. ML:0.6 2.008771E-5 1.68 AML other m 2019-07-31T15:56:04.14
IV.SFI.HNN. ML:1.4 0.0001170961 0.4992 AML other m 2019-07-31T15:56:05.25
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