Earthquake with magnitude of Md 2.5 on date 05-06-1991 and time 04:05:11 (Italy) in region 4 km S Fiordimonte (MC)

A magnitude Md 2.5 earthquake occured in region: 4 km S Fiordimonte (MC), on

  • 05-06-1991 02:05:11 (UTC)
  • 05-06-1991 04:05:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9990, 13.0850 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
Fiordimonte MC 4 202 202
Pieve Torina MC 6 1458 1660
Monte Cavallo MC 7 145 1805
Pievebovigliana MC 7 866 2671
Fiastra MC 7 559 3230
Visso MC 8 1107 4337
Ussita MC 8 444 4781
Acquacanina MC 8 121 4902
Muccia MC 10 915 5817
Bolognola MC 12 142 5959
Castelsantangelo sul Nera MC 13 281 6240
Serravalle di Chienti MC 14 1070 7310
Preci PG 14 724 8034
Camerino MC 15 6974 15008
Sellano PG 18 1079 16087
Sarnano MC 18 3264 19351
Cessapalombo MC 19 512 19863
Caldarola MC 19 1823 21686
Sefro MC 20 422 22108

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Foligno (57155 inhabitants)
58 Km E of Perugia (166134 inhabitants)
60 Km NE of Terni (111501 inhabitants)
63 Km NW of Teramo (54892 inhabitants)
76 Km NW of L'Aquila (69753 inhabitants)
77 Km SW of Ancona (100861 inhabitants)
94 Km S of Fano (60888 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
1991-06-05
02:05:11
42.999 13.085 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 142689
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-06-05 02:05:11 ± 0.221
Latitude 42.9990 ± 0.0097
Longitude 13.0850 ± 0.0223
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 142689

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) 2112.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 171
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.00283
Epicentral distance of station farthest from the epicenter (degree) 0.00923
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 142689
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:13:12

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 142689
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
--.CRE.Z. 1991-06-05T02:05:48.35 10.0 undecidable manual SG 307 1.0212 0.73 0.2
--.AQU.Z. 1991-06-05T02:05:37.48 10.0 undecidable manual SG 159 0.6882 1 0.1
--.MNS.Z. 1991-06-05T02:05:35.94 10.0 undecidable manual SG 205 0.6771 -0.43 0.5
--.CRE.Z. 1991-06-05T02:05:33.25 10.0 undecidable manual PG 307 1.0212 0.85 0.3
--.ARV.Z. 1991-06-05T02:05:30.91 10.0 undecidable manual SG 348 0.4995 0.05 0.7
--.AQU.Z. 1991-06-05T02:05:25.69 10.0 undecidable manual PG 159 0.6882 -0.28 1.5
--.MNS.Z. 1991-06-05T02:05:25.82 10.0 undecidable manual PG 205 0.6771 -0.09 1.8
--.ASS.Z. 1991-06-05T02:05:23.68 10.0 undecidable manual SG 281 0.3108 -0.48 0.5
--.ARV.Z. 1991-06-05T02:05:22.37 10.0 positive manual PG 348 0.4995 -0.36 2.9
--.ASS.Z. 1991-06-05T02:05:18.50 10.0 undecidable manual PG 281 0.3108 -0.35 1.4
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
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