Earthquake with magnitude of Md 2.3 on date 19-01-1988 and time 22:50:00 (UTC) in region 1 km E Firenzuola (FI)

A magnitude Md 2.3 earthquake occured in region: 1 km E Firenzuola (FI), on

  • 19-01-1988 22:50:00 (UTC)
  • 19-01-1988 23:50:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.1200, 11.3950 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
Firenzuola FI 1 4726 4726
Palazzuolo sul Senio FI 12 1154 5880
Monghidoro BO 13 3749 9629
Castel del Rio BO 14 1246 10875
San Benedetto Val di Sambro BO 17 4315 15190
Loiano BO 18 4294 19484
Marradi FI 18 3139 22623
Barberino di Mugello FI 18 10836 33459
Scarperia e San Piero FI 18 12217 45676
Borgo San Lorenzo FI 18 18211 63887
Castiglione dei Pepoli BO 19 5648 69535

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NE of Prato (191150 inhabitants)
36 Km SW of Imola (69797 inhabitants)
40 Km N of Firenze (382808 inhabitants)
42 Km S of Bologna (386663 inhabitants)
43 Km W of Faenza (58541 inhabitants)
43 Km E of Pistoia (90315 inhabitants)
44 Km NE of Scandicci (50609 inhabitants)
53 Km W of Forlì (117913 inhabitants)
68 Km W of Cesena (96758 inhabitants)
69 Km SE of Modena (184973 inhabitants)
72 Km W of Ravenna (159116 inhabitants)
78 Km E of Lucca (89046 inhabitants)
82 Km S of Ferrara (133155 inhabitants)
83 Km NW of Arezzo (99543 inhabitants)
84 Km SE of Carpi (70699 inhabitants)
88 Km SE of Reggio nell'Emilia (171345 inhabitants)
89 Km N of Siena (53903 inhabitants)
91 Km E of Pisa (89158 inhabitants)
94 Km W of Rimini (147750 inhabitants)
96 Km E of Viareggio (62467 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 2.3
ML-VAX 1.7
1988-01-19
22:50:00
44.12 11.395 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 61369
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-01-19 22:50:00 ± 0.268
Latitude 44.1200 ± 0.0222
Longitude 11.3950 ± 0.0155
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 61369

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) 2760.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 217
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) 0.00300
Epicentral distance of station farthest from the epicenter (degree) 0.00664
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 61369
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:58:26

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 61369
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
--.PII.Z. 1988-01-19T22:50:26.00 10.0 undecidable manual SG 238 0.7326 0.04 0.6
--.BDI.Z. 1988-01-19T22:50:21.00 10.0 undecidable manual SG 264 0.5661 0.41 0.4
--.PII.Z. 1988-01-19T22:50:14.50 10.0 undecidable manual PG 238 0.7326 -0.57 0.6
--.PGD.Z. 1988-01-19T22:50:13.50 10.0 undecidable manual SG 136 0.333 0.5 0.3
--.CRE.Z. 1988-01-19T22:50:13.37 10.0 undecidable manual PG 141 0.6327 0.19 1.6
--.BDI.Z. 1988-01-19T22:50:12.00 10.0 undecidable manual PG 264 0.5661 0.03 1.9
--.MME.Z. 1988-01-19T22:50:10.65 10.0 undecidable manual PG 278 0.4995 0.02 2
--.PGD.Z. 1988-01-19T22:50:07.00 10.0 undecidable manual PG 136 0.333 -0.59 0.6
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