Earthquake with magnitude of Md 2.7 on date 24-12-1989 and time 05:10:31 (UTC) in region 6 km SE Monteverdi Marittimo (PI)

A magnitude Md 2.7 earthquake occured in region: 6 km SE Monteverdi Marittimo (PI), on

  • 24-12-1989 05:10:31 (UTC)
  • 24-12-1989 06:10:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.146, 10.778 at 5 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
Monteverdi Marittimo PI 6 758 758
Monterotondo Marittimo GR 6 1371 2129
Suvereto LI 11 3072 5201
Sassetta LI 11 514 5715
Castelnuovo di Val di Cecina PI 13 2231 7946
Castagneto Carducci LI 14 9010 16956
Massa Marittima GR 14 8375 25331
Campiglia Marittima LI 16 13218 38549
Pomarance PI 19 5897 44446
Montieri GR 20 1204 45650

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km W of Siena (53903 inhabitants)
51 Km NW of Grosseto (82087 inhabitants)
59 Km SE of Livorno (159219 inhabitants)
70 Km SE of Pisa (89158 inhabitants)
76 Km SW of Scandicci (50609 inhabitants)
79 Km SW of Firenze (382808 inhabitants)
81 Km S of Lucca (89046 inhabitants)
86 Km SW of Prato (191150 inhabitants)
88 Km S of Pistoia (90315 inhabitants)
91 Km SE of Viareggio (62467 inhabitants)
96 Km W of Arezzo (99543 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 2.7
ML-VAX 2.5
1989-12-24
05:10:31
43.146 10.778 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 106619
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-12-24 05:10:31 ± 0.199
Latitude 43.1460 ± 0.0105
Longitude 10.7780 ± 0.0248
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 106619

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) 2323.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 170
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
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) 0.00542
Epicentral distance of station farthest from the epicenter (degree) 0.01692
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

Md:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 106619
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:39:17

ML:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 5
Type of magnitude ML
Reference to an origin 106619
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.BOB.Z. 1989-12-24T05:11:05.32 10.0 undecidable manual PN 329 0.0169 1.07 0.1
--.BDI.Z. 1989-12-24T05:11:03.84 10.0 undecidable manual SG 351 0.0083 -0.31 0.4
--.ARV.Z. 1989-12-24T05:11:01.20 10.0 undecidable manual PN 76 0.0145 0.63 0.3
--.MNS.Z. 1989-12-24T05:11:00.58 10.0 undecidable manual PN 117 0.0142 0.33 0.9
--.MAO.Z. 1989-12-24T05:10:59.30 10.0 undecidable manual SG 158 0.007 -0.42 0.2
--.ASS.Z. 1989-12-24T05:10:57.50 10.0 undecidable manual PN 92 0.0123 0.27 1
--.MME.Z. 1989-12-24T05:10:52.92 10.0 undecidable manual PG 356 0.0094 0.25 1.2
--.PII.Z. 1989-12-24T05:10:52.93 10.0 undecidable manual SG 342 0.0054 -0.9 0
--.SFI.Z. 1989-12-24T05:10:52.87 10.0 undecidable manual PN 45 0.0097 -0.43 0.7
--.CRE.Z. 1989-12-24T05:10:51.50 10.0 undecidable manual PG 60 0.0087 0.2 1.1
--.PGD.Z. 1989-12-24T05:10:51.53 10.0 negative manual PG 42 0.009 -0.23 2.3
--.BDI.Z. 1989-12-24T05:10:50.18 10.0 undecidable manual PG 351 0.0083 -0.21 1
--.MAO.Z. 1989-12-24T05:10:47.53 10.0 positive manual PG 158 0.007 -0.14 2.1
--.PII.Z. 1989-12-24T05:10:44.52 10.0 positive manual PG 342 0.0054 0.09 2.6
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