Earthquake with magnitude of Md 3.2 on date 11-07-1991 and time 14:49:09 (Italy) in region 3 km NW Preci (PG)

A magnitude Md 3.2 earthquake occured in region: 3 km NW Preci (PG), on

  • 11-07-1991 12:49:09 (UTC)
  • 11-07-1991 14:49:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9, 13.03 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
Preci PG 3 724 724
Visso MC 6 1107 1831
Sellano PG 8 1079 2910
Castelsantangelo sul Nera MC 10 281 3191
Ussita MC 10 444 3635
Monte Cavallo MC 11 145 3780
Cerreto di Spoleto PG 13 1075 4855
Norcia PG 13 4957 9812
Fiordimonte MC 16 202 10014
Pieve Torina MC 16 1458 11472
Fiastra MC 18 559 12031
Pievebovigliana MC 19 866 12897
Acquacanina MC 19 121 13018
Bolognola MC 19 142 13160
Vallo di Nera PG 20 364 13524

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Foligno (57155 inhabitants)
49 Km NE of Terni (111501 inhabitants)
57 Km E of Perugia (166134 inhabitants)
61 Km W of Teramo (54892 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
89 Km SW of Ancona (100861 inhabitants)
93 Km NE of Viterbo (67173 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 3.2 1991-07-11
12:49:09
42.9 13.03 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 145119
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-07-11 12:49:09 ± 0.151
Latitude 42.90 ± 0.01
Longitude 13.03 ± 0.01
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 145119

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) 1475
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00121
Epicentral distance of station farthest from the epicenter (degree) 0.03319
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitude information

Md:3.2

Field Value
Value 3.2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 145119
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:15:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FVI.Z. 1991-07-11T12:50:07.50 10.0 undecidable manual PN 357 0.0332 0.43 0.6
--.RDP.Z. 1991-07-11T12:49:48.93 10.0 undecidable manual SN 191 0.0104 -0.14 0.6
--.BDI.Z. 1991-07-11T12:49:47.00 10.0 undecidable manual PN 304 0.0189 1.67 0.1
--.CP9.Z. 1991-07-11T12:49:47.31 10.0 undecidable manual SG 183 0.0093 1.52 0.1
--.MME.Z. 1991-07-11T12:49:46.50 10.0 undecidable manual PN 308 0.0191 0.98 0.5
--.CRE.Z. 1991-07-11T12:49:46.90 10.0 undecidable manual SG 312 0.0096 0.39 0.6
--.DUI.Z. 1991-07-11T12:49:40.40 10.0 undecidable manual PN 139 0.0147 1.65 0.1
--.MAO.Z. 1991-07-11T12:49:37.29 10.0 undecidable manual PN 251 0.0131 0.89 0.7
--.AOI.Z. 1991-07-11T12:49:36.00 10.0 undecidable manual SG 32 0.0069 -1.11 0.3
--.SFI.Z. 1991-07-11T12:49:34.83 10.0 undecidable manual PN 319 0.0118 0.38 1.3
--.SDI.Z. 1991-07-11T12:49:34.00 10.0 undecidable manual PN 153 0.0119 -0.54 1.1
--.PGD.Z. 1991-07-11T12:49:34.99 10.0 positive manual PN 316 0.0122 -0.03 2.8
--.AQU.Z. 1991-07-11T12:49:33.00 10.0 undecidable manual SG 153 0.0055 0.95 0.3
--.RDP.Z. 1991-07-11T12:49:32.46 10.0 undecidable manual PN 191 0.0104 0.11 1.5
--.RSM.Z. 1991-07-11T12:49:32.32 10.0 undecidable manual PN 338 0.01 0.74 1
--.CP9.Z. 1991-07-11T12:49:31.26 10.0 undecidable manual PG 183 0.0093 0.8 1
--.ARV.Z. 1991-07-11T12:49:31.75 10.0 undecidable manual SG 354 0.0053 0.09 0.7
--.CRE.Z. 1991-07-11T12:49:30.47 10.0 undecidable manual PG 312 0.0096 -0.41 1.4
--.MNS.Z. 1991-07-11T12:49:30.25 10.0 undecidable manual SG 206 0.0052 -0.63 0.5
--.SSO.Z. 1991-07-11T12:49:28.50 10.0 undecidable manual SG 36 0.0043 0.54 0.5
--.ALP.Z. 1991-07-11T12:49:25.00 10.0 undecidable manual SG 106 0.0036 -0.53 0.5
--.AOI.Z. 1991-07-11T12:49:25.25 10.0 undecidable manual PG 32 0.0069 -0.2 1.6
--.ARV.Z. 1991-07-11T12:49:21.46 10.0 negative manual PG 354 0.0053 -0.84 1.9
--.AQU.Z. 1991-07-11T12:49:21.50 10.0 undecidable manual PG 153 0.0055 -1.03 0.7
--.CIO.Z. 1991-07-11T12:49:21.38 10.0 undecidable manual SG 16 0.0027 -0.02 0.7
--.ASS.Z. 1991-07-11T12:49:21.42 10.0 undecidable manual SG 300 0.0028 -0.48 0.6
--.SSO.Z. 1991-07-11T12:49:20.50 10.0 undecidable manual PG 36 0.0043 0.34 1.5
--.MNS.Z. 1991-07-11T12:49:20.48 10.0 positive manual PG 206 0.0052 -1.37 0.8
--.ALP.Z. 1991-07-11T12:49:18.60 10.0 undecidable manual PG 106 0.0036 -0.7 1.1
--.CIO.Z. 1991-07-11T12:49:16.11 10.0 negative manual PG 16 0.0027 -0.27 3.2
--.ASS.Z. 1991-07-11T12:49:16.16 10.0 negative manual PG 300 0.0028 -0.51 2.7
--.RMF.Z. 1991-07-11T12:49:15.75 10.0 undecidable manual SG 68 0.0012 0.47 0.6
--.RMF.Z. 1991-07-11T12:49:13.25 10.0 undecidable manual PG 68 0.0012 0.41 1.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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