Earthquake with magnitude of Md 2.0 on date 22-10-1991 and time 21:24:55 (UTC) in region 4 km S Alcara li Fusi (ME)

A magnitude Md 2.0 earthquake occured in region: 4 km S Alcara li Fusi (ME), on

  • 22-10-1991 21:24:55 (UTC)
  • 22-10-1991 22:24:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.9840, 14.7110 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
Alcara li Fusi ME 4 1980 1980
Longi ME 6 1473 3453
Militello Rosmarino ME 8 1324 4777
Galati Mamertino ME 8 2627 7404
San Marco d'Alunzio ME 10 1996 9400
Frazzanò ME 10 711 10111
San Fratello ME 11 3707 13818
Tortorici ME 11 6435 20253
San Salvatore di Fitalia ME 11 1319 21572
Sant'Agata di Militello ME 12 12624 34196
Mirto ME 12 974 35170
Torrenova ME 12 4386 39556
Acquedolci ME 14 5744 45300
Capri Leone ME 14 4515 49815
Castell'Umberto ME 14 3128 52943
San Teodoro ME 15 1403 54346
Cesarò ME 16 2439 56785
Maniace CT 16 3765 60550
Sinagra ME 17 2705 63255
Ucria ME 17 1058 64313
Naso ME 17 3813 68126
Floresta ME 18 485 68611
Ficarra ME 18 1469 70080
Raccuja ME 19 1041 71121
Capo d'Orlando ME 20 13254 84375

Municipalities with at least 50000 inhabitants

An earthquake occurred to
58 Km NW of Acireale (52622 inhabitants)
63 Km NW of Catania (314555 inhabitants)
78 Km W of Messina (238439 inhabitants)
79 Km NE of Caltanissetta (63360 inhabitants)
83 Km W of Reggio di Calabria (183035 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 2.0 1991-10-22
21:24:55
37.984 14.711 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 151479
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-10-22 21:24:55 ± 0.246
Latitude 37.9840 ± 0.0299
Longitude 14.7110 ± 0.0174
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 151479

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) 3655.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 162
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00040
Epicentral distance of station farthest from the epicenter (degree) 0.00696
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:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 151479
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:21:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MO9.Z. 1991-10-22T21:25:21.00 10.0 undecidable manual SG 88 0.777 -1.2 0.1
--.ATN.Z. 1991-10-22T21:25:17.50 10.0 undecidable manual SG 73 0.6105 0.36 0.7
--.GIB.Z. 1991-10-22T21:25:15.19 10.0 undecidable manual SG 270 0.5328 0.52 0.6
--.MO9.Z. 1991-10-22T21:25:12.00 10.0 undecidable manual PG 88 0.777 1.1 0.4
--.ATN.Z. 1991-10-22T21:25:07.50 10.0 undecidable manual PG 73 0.6105 -0.47 1.5
--.GIB.Z. 1991-10-22T21:25:06.25 10.0 undecidable manual PG 270 0.5328 -0.3 1.9
--.MNO.Z. 1991-10-22T21:24:59.70 10.0 undecidable manual SG 194 0.0444 0.25 0.8
--.MNO.Z. 1991-10-22T21:24:57.50 10.0 undecidable manual PG 194 0.0444 -0.26 2
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