Earthquake with magnitude of Md 2.4 on date 30-06-1985 and time 03:39:07 (Italy) in region 5 km S Montelupo Fiorentino (FI)

A magnitude Md 2.4 earthquake occured in region: 5 km S Montelupo Fiorentino (FI), on

  • 30-06-1985 01:39:07 (UTC)
  • 30-06-1985 03:39:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.6840, 11.0070 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
Montelupo Fiorentino FI 5 14098 14098
Empoli FI 6 48109 62207
Capraia e Limite FI 7 7670 69877
Montespertoli FI 7 13537 83414
Castelfiorentino FI 9 17504 100918
San Miniato PI 12 27934 128852
Lastra a Signa FI 13 20156 149008
Vinci FI 13 14604 163612
Signa FI 13 19179 182791
Cerreto Guidi FI 13 10870 193661
San Casciano in Val di Pesa FI 15 17062 210723
Carmignano PO 15 14450 225173
Poggio a Caiano PO 15 10007 235180
Certaldo FI 15 16121 251301
Scandicci FI 16 50609 301910
Montaione FI 16 3700 305610
Fucecchio FI 17 23618 329228
Gambassi Terme FI 17 4870 334098
Lamporecchio PT 17 7508 341606
Quarrata PT 18 26190 367796
Campi Bisenzio FI 19 46166 413962
Santa Croce sull'Arno PI 19 14601 428563
Larciano PT 19 6394 434957
Tavarnelle Val di Pesa FI 19 7800 442757
Montopoli in Val d'Arno PI 20 11148 453905

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km SW of Scandicci (50609 inhabitants)
22 Km W of Firenze (382808 inhabitants)
23 Km SW of Prato (191150 inhabitants)
29 Km S of Pistoia (90315 inhabitants)
44 Km E of Lucca (89046 inhabitants)
48 Km NW of Siena (53903 inhabitants)
49 Km E of Pisa (89158 inhabitants)
58 Km E of Livorno (159219 inhabitants)
64 Km E of Viareggio (62467 inhabitants)
75 Km W of Arezzo (99543 inhabitants)
80 Km E of Massa (69479 inhabitants)
85 Km SE of Carrara (63133 inhabitants)
94 Km SW of Imola (69797 inhabitants)
94 Km S of Bologna (386663 inhabitants)
97 Km SW of Faenza (58541 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
Md 2.4 1985-06-30
01:39:07
43.684 11.007 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 9399
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-06-30 01:39:07 ± 0.312
Latitude 43.6840 ± 0.0301
Longitude 11.0070 ± 0.0185
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 9399

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) 3666.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 181
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.00607
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:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 9399
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:13:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.CH1.Z. 1985-06-30T01:39:30.00 10.0 undecidable manual SG 94 0.6771 -0.9 0.1
--.BD1.Z. 1985-06-30T01:39:24.00 10.0 undecidable manual SG 322 0.4773 -0.39 0.5
--.CH1.Z. 1985-06-30T01:39:21.00 10.0 undecidable manual PG 94 0.6771 0.17 2.6
--.PS9.Z. 1985-06-30T01:39:19.00 10.0 undecidable manual SG 276 0.3552 -1.25 0
--.BD1.Z. 1985-06-30T01:39:17.50 10.0 undecidable manual PG 322 0.4773 0.43 1.1
--.PS9.Z. 1985-06-30T01:39:15.00 10.0 undecidable manual PG 276 0.3552 0.32 1.4
--.FIR.N. 1985-06-30T01:39:15.00 10.0 undecidable manual SG 63 0.1998 -0.43 0.5
--.FIR.Z. 1985-06-30T01:39:12.00 10.0 undecidable manual PG 63 0.1998 0.1 1.8
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