Earthquake with magnitude of Md 2.0 on date 11-07-1999 and time 20:21:28 (Italy) in region 3 km SE San Godenzo (FI)

A magnitude Md 2.0 earthquake occured in region: 3 km SE San Godenzo (FI), on

  • 11-07-1999 18:21:28 (UTC)
  • 11-07-1999 20:21:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.91, 11.65 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
San Godenzo FI 3 1167 1167
Londa FI 9 1840 3007
Dicomano FI 10 5515 8522
Premilcuore FC 12 799 9321
Vicchio FI 15 8044 17365
Pratovecchio Stia AR 15 5845 23210
Rufina FI 16 7346 30556
Portico e San Benedetto FC 16 756 31312
Marradi FI 18 3139 34451
Montemignaio AR 19 566 35017
Castel San Niccolò AR 20 2707 37724
Pelago FI 20 7660 45384
Tredozio FC 20 1212 46596

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Firenze (382808 inhabitants)
41 Km E of Scandicci (50609 inhabitants)
44 Km E of Prato (191150 inhabitants)
45 Km SW of Faenza (58541 inhabitants)
47 Km SW of Forlì (117913 inhabitants)
49 Km S of Imola (69797 inhabitants)
53 Km NW of Arezzo (99543 inhabitants)
54 Km W of Cesena (96758 inhabitants)
59 Km E of Pistoia (90315 inhabitants)
69 Km SE of Bologna (386663 inhabitants)
71 Km NE of Siena (53903 inhabitants)
71 Km SW of Ravenna (159116 inhabitants)
75 Km W of Rimini (147750 inhabitants)
92 Km E of Lucca (89046 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 Md 2.0 1999-07-11
18:21:28
43.91 11.65 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 370289
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1999-07-11 18:21:28 ± 0.119
Latitude 43.91 ± 0.01
Longitude 11.65 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 370289

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 870.1
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 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00057
Epicentral distance of station farthest from the epicenter (degree) 0.00453
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2

Field Value
Value 2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 370289
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:47:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CSNT.Z. 1999-07-11T18:21:47.32 10.0 undecidable manual SG 210 0.0045 0.02 0.6
--.CRE.Z. 1999-07-11T18:21:42.71 10.0 undecidable manual SG 143 0.0032 0.12 0.6
--.CSNT.Z. 1999-07-11T18:21:39.62 10.0 undecidable manual PG 210 0.0045 0.08 1.3
--.CRE.Z. 1999-07-11T18:21:36.67 10.0 negative manual PG 143 0.0032 -0.15 1.8
--.SFI.Z. 1999-07-11T18:21:35.63 10.0 undecidable manual SG 94 0.0012 0.19 0.3
--.PGD.Z. 1999-07-11T18:21:33.34 10.0 undecidable manual SG 127 0.0006 0.07 0.8
--.SFI.Z. 1999-07-11T18:21:32.75 10.0 undecidable manual PG 94 0.0012 0.05 1.8
--.PGD.Z. 1999-07-11T18:21:31.24 10.0 undecidable manual PG 127 0.0006 -0.2 0.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download