Earthquake with magnitude of Md 1.9 on date 25-09-1991 and time 13:11:27 (Italy) in region 5 km E Bova (RC)

A magnitude Md 1.9 earthquake occured in region: 5 km E Bova (RC), on

  • 25-09-1991 11:11:27 (UTC)
  • 25-09-1991 13:11:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.9760, 15.9810 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
Bova RC 5 448 448
Staiti RC 5 248 696
Palizzi RC 6 2480 3176
Bova Marina RC 7 4235 7411
Bruzzano Zeffirio RC 10 1111 8522
Roccaforte del Greco RC 11 476 8998
Brancaleone RC 11 3584 12582
Condofuri RC 11 5113 17695
Ferruzzano RC 12 772 18467
Samo RC 13 809 19276
San Lorenzo RC 13 2640 21916
Bagaladi RC 15 1039 22955
Africo RC 16 3075 26030
Sant'Agata del Bianco RC 16 592 26622
Caraffa del Bianco RC 16 539 27161
Casignana RC 17 759 27920
Melito di Porto Salvo RC 18 11355 39275
Bianco RC 19 4273 43548
Montebello Ionico RC 20 6214 49762
Roghudi RC 20 1104 50866

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Reggio di Calabria (183035 inhabitants)
44 Km SE of Messina (238439 inhabitants)
82 Km NE of Acireale (52622 inhabitants)
95 Km NE of Catania (314555 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 1.9 1991-09-25
11:11:27
37.976 15.981 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 149799
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-09-25 11:11:27 ± 0.555
Latitude 37.9760 ± 0.0283
Longitude 15.9810 ± 0.0216
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 149799

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) 3671.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 245
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
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) 0.00097
Epicentral distance of station farthest from the epicenter (degree) 0.01117
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:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 149799
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:19:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.CZI.Z. 1991-09-25T11:11:49.92 10.0 undecidable manual PN 5 1.2432 -1.34 0
--.MO9.Z. 1991-09-25T11:11:35.97 10.0 undecidable manual SG 276 0.222 -0.28 0.4
--.GMB.Z. 1991-09-25T11:11:35.96 10.0 undecidable manual SG 328 0.222 -0.23 0.4
--.GMB.Z. 1991-09-25T11:11:32.63 10.0 positive manual PG 328 0.222 0.2 2
--.SOI.Z. 1991-09-25T11:11:32.21 10.0 undecidable manual SG 30 0.111 0.22 0.4
--.MO9.Z. 1991-09-25T11:11:32.67 10.0 positive manual PG 276 0.222 0.2 2
--.SOI.Z. 1991-09-25T11:11:30.33 10.0 negative manual PG 30 0.111 0.32 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