Earthquake with magnitude of Md 2.6 on date 21-01-1993 and time 04:37:24 (Italy) in region 3 km NW Vernio (PO)

A magnitude Md 2.6 earthquake occured in region: 3 km NW Vernio (PO), on

  • 21-01-1993 03:37:24 (UTC)
  • 21-01-1993 04:37:24 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.08, 11.13 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
Vernio PO 3 6060 6060
Cantagallo PO 5 3105 9165
Castiglione dei Pepoli BO 8 5648 14813
Camugnano BO 11 1885 16698
Sambuca Pistoiese PT 11 1626 18324
Vaiano PO 12 9895 28219
Barberino di Mugello FI 12 10836 39055
Castel di Casio BO 13 3448 42503
Alto Reno Terme BO 15 6960 49463
San Benedetto Val di Sambro BO 18 4315 53778
Montale PT 18 10737 64515
Montemurlo PO 18 18456 82971
Scarperia e San Piero FI 20 12217 95188

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km N of Prato (191150 inhabitants)
23 Km NE of Pistoia (90315 inhabitants)
35 Km N of Scandicci (50609 inhabitants)
35 Km N of Firenze (382808 inhabitants)
50 Km SW of Bologna (386663 inhabitants)
56 Km SW of Imola (69797 inhabitants)
57 Km E of Lucca (89046 inhabitants)
64 Km W of Faenza (58541 inhabitants)
66 Km S of Modena (184973 inhabitants)
71 Km NE of Pisa (89158 inhabitants)
74 Km E of Viareggio (62467 inhabitants)
74 Km W of Forlì (117913 inhabitants)
79 Km E of Massa (69479 inhabitants)
80 Km SE of Reggio nell'Emilia (171345 inhabitants)
81 Km S of Carpi (70699 inhabitants)
83 Km E of Carrara (63133 inhabitants)
86 Km N of Siena (53903 inhabitants)
88 Km NE of Livorno (159219 inhabitants)
89 Km W of Cesena (96758 inhabitants)
91 Km NW of Arezzo (99543 inhabitants)
93 Km SW of Ferrara (133155 inhabitants)
93 Km W of Ravenna (159116 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 2.6
ML-VAX 1.5
1993-01-21
03:37:24
44.08 11.13 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 179109
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-01-21 03:37:24 ± 0.153
Latitude 44.08 ± 0.01
Longitude 11.13 ± 0.01
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 179109

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) 1686.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 129
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
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) 0.00267
Epicentral distance of station farthest from the epicenter (degree) 0.00664
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 179109
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:47:58

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 179109
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
--.CRE.Z. 1993-01-21T03:37:50.80 10.0 undecidable manual SG 127 0.0066 0.42 0.4
--.PII.Z. 1993-01-21T03:37:44.40 10.0 undecidable manual SG 231 0.005 -0.17 0.6
--.SFI.Z. 1993-01-21T03:37:43.62 10.0 undecidable manual SG 108 0.0049 -0.24 0.6
--.PGD.Z. 1993-01-21T03:37:40.94 10.0 undecidable manual SG 114 0.0042 -0.56 0.4
--.CRE.Z. 1993-01-21T03:37:40.00 10.0 undecidable manual PG 127 0.0066 0.53 0.8
--.GU9.Z. 1993-01-21T03:37:40.55 10.0 undecidable manual SG 305 0.0043 -1.27 0
--.BDI.Z. 1993-01-21T03:37:38.76 10.0 undecidable manual SG 268 0.0034 -0.08 0.7
--.ZC9.Z. 1993-01-21T03:37:36.98 10.0 undecidable manual SG 338 0.0027 0.92 0.1
--.PII.Z. 1993-01-21T03:37:36.23 10.0 undecidable manual PG 231 0.005 0.12 1.6
--.SFI.Z. 1993-01-21T03:37:34.79 10.0 undecidable manual PG 108 0.0049 -0.92 0.3
--.PGD.Z. 1993-01-21T03:37:34.80 10.0 undecidable manual PG 114 0.0042 0.46 1.2
--.GU9.Z. 1993-01-21T03:37:34.97 10.0 undecidable manual PG 305 0.0043 0.44 1.2
--.BDI.Z. 1993-01-21T03:37:32.79 10.0 undecidable manual PG 268 0.0034 -0.02 1.8
--.ZC9.Z. 1993-01-21T03:37:31.12 10.0 positive manual PG 338 0.0027 -0.08 3.6
--.MME.Z. 1993-01-21T03:37:31.76 10.0 undecidable manual PG 290 0.0029 -0.07 1.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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