Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.5 on date 24-12-1999 and time 21:11:18 (Italy) in region 6 km E Borgo Val di Taro (PR)

A magnitude Md 2.5 earthquake occured in region: 6 km E Borgo Val di Taro (PR), on

  • 24-12-1999 20:11:18 (UTC)
  • 24-12-1999 21:11:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.4750, 9.8430 at 4 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
Borgo Val di Taro PR 6 6999 6999
Valmozzola PR 11 539 7538
Pontremoli MS 11 7357 14895
Albareto PR 12 2156 17051
Berceto PR 12 2109 19160
Compiano PR 15 1112 20272
Zeri MS 15 1094 21366
Bedonia PR 17 3482 24848
Tornolo PR 17 1010 25858
Filattiera MS 18 2309 28167
Mulazzo MS 18 2424 30591
Solignano PR 19 1773 32364
Corniglio PR 20 1936 34300
Bardi PR 20 2227 36527

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km N of La Spezia (93959 inhabitants)
49 Km NW of Carrara (63133 inhabitants)
53 Km SW of Parma (192836 inhabitants)
54 Km NW of Massa (69479 inhabitants)
65 Km S of Piacenza (102191 inhabitants)
67 Km W of Reggio nell'Emilia (171345 inhabitants)
73 Km E of Genova (586655 inhabitants)
75 Km S of Cremona (71901 inhabitants)
75 Km NW of Viareggio (62467 inhabitants)
88 Km NW of Lucca (89046 inhabitants)
88 Km W of Modena (184973 inhabitants)
89 Km W of Carpi (70699 inhabitants)
95 Km NW of Pisa (89158 inhabitants)
96 Km SE of Pavia (72576 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 2.5
ML-VAX 1.7 		1999-12-24
20:11:18		 44.475 9.843 4 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 378629
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1999-12-24 20:11:18 ± 0.2
Latitude 44.4750 ± 0.0104
Longitude 9.8430 ± 0.0119
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 378629

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) 1496.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00364
Epicentral distance of station farthest from the epicenter (degree) 0.01829
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 378629
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:55:38

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 378629
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(km) Takeoff_angle Residual Weight
--.CTI.Z. 1999-12-24T20:12:17.51 10.0 undecidable manual SN 38 2.0091 -0.84 0.1
--.CRE.Z. 1999-12-24T20:12:12.40 10.0 undecidable manual SN 119 1.7316 0.79 0.2
--.SAL.Z. 1999-12-24T20:11:59.60 10.0 undecidable manual SN 23 1.221 0.06 0.8
--.CKI.Z. 1999-12-24T20:11:56.14 10.0 undecidable manual SN 268 1.11 -0.7 0.3
--.BR9.Z. 1999-12-24T20:11:52.63 10.0 undecidable manual PN 10 2.0313 -0.48 0.9
--.CTI.Z. 1999-12-24T20:11:52.62 10.0 undecidable manual PN 38 2.0091 -0.33 1.2
--.DOI.Z. 1999-12-24T20:11:51.24 10.0 undecidable manual PN 272 1.8426 0.63 0.7
--.PII.Z. 1999-12-24T20:11:50.40 10.0 undecidable manual SG 147 0.888 -0.02 0.8
--.CRE.Z. 1999-12-24T20:11:48.84 10.0 undecidable manual PN 119 1.7316 -0.21 1.6
--.VAI.Z. 1999-12-24T20:11:47.50 10.0 undecidable manual PN 332 1.5762 0.57 0.9
--.SFI.Z. 1999-12-24T20:11:47.40 10.0 undecidable manual PN 111 1.5318 0.63 0.8
--.CSNT.Z. 1999-12-24T20:11:45.38 10.0 undecidable manual PN 133 1.443 0.35 1.5
--.SAL.Z. 1999-12-24T20:11:42.19 10.0 undecidable manual PN 23 1.221 0.1 2
--.CKI.Z. 1999-12-24T20:11:39.93 10.0 undecidable manual PN 268 1.11 -0.6 1
--.GU9.Z. 1999-12-24T20:11:38.86 10.0 undecidable manual SG 103 0.5439 0.09 0.8
--.PII.Z. 1999-12-24T20:11:36.20 10.0 undecidable manual PG 147 0.888 -0.59 1
--.ZC9.Z. 1999-12-24T20:11:35.89 10.0 undecidable manual PG 98 0.8214 0.73 0.7
--.BOB.Z. 1999-12-24T20:11:34.54 10.0 undecidable manual SG 316 0.3996 0.6 0.4
--.EB9.Z. 1999-12-24T20:11:34.24 10.0 undecidable manual SG 97 0.3996 0.12 0.8
--.GU9.Z. 1999-12-24T20:11:29.73 10.0 undecidable manual PG 103 0.5439 -0.38 1.6
--.EB9.Z. 1999-12-24T20:11:27.60 10.0 undecidable manual PG 97 0.3996 -0.35 1.6
--.BOB.Z. 1999-12-24T20:11:27.24 10.0 undecidable manual PG 316 0.3996 -0.07 2.1
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