Earthquake with magnitude of Md 3.1 on date 22-03-1999 and time 17:25:03 (Italy) in region 9 km W Monte Cavallo (MC)

A magnitude Md 3.1 earthquake occured in region: 9 km W Monte Cavallo (MC), on

  • 22-03-1999 16:25:03 (UTC)
  • 22-03-1999 17:25:03 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.994, 12.887 at 3 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
Monte Cavallo MC 9 145 145
Serravalle di Chienti MC 10 1070 1215
Sellano PG 12 1079 2294
Valtopina PG 13 1398 3692
Pieve Torina MC 15 1458 5150
Nocera Umbra PG 15 5839 10989
Foligno PG 15 57155 68144
Muccia MC 16 915 69059
Trevi PG 17 8469 77528
Fiordimonte MC 17 202 77730
Spello PG 18 8645 86375
Sefro MC 18 422 86797
Preci PG 18 724 87521
Visso MC 18 1107 88628
Pievebovigliana MC 18 866 89494
Cerreto di Spoleto PG 20 1075 90569

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km E of Foligno (57155 inhabitants)
42 Km E of Perugia (166134 inhabitants)
52 Km NE of Terni (111501 inhabitants)
76 Km W of Teramo (54892 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
90 Km NE of Viterbo (67173 inhabitants)
95 Km S of Fano (60888 inhabitants)
97 Km SE of Arezzo (99543 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 3.1
ML-VAX 2.0
1999-03-22
16:25:03
42.994 12.887 3 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 361609
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1999-03-22 16:25:03 ± 0.251
Latitude 42.9940 ± 0.0116
Longitude 12.8870 ± 0.0208
Depth (km) 3 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 361609

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) 2125.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
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) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.01303
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 7
Type of magnitude Md
Reference to an origin 361609
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:39:07

ML:2

Field Value
Value 2
Uncertainty
Num. used stations 5
Type of magnitude ML
Reference to an origin 361609
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 Takeoff_angle Residual Weight
--.SDI.Z. 1999-03-22T16:25:32.20 10.0 undecidable manual PN 151 0.013 1.69 0.2
--.GRFL.Z. 1999-03-22T16:25:30.38 10.0 undecidable manual PN 276 0.0126 0.56 1.1
--.FB9.Z. 1999-03-22T16:25:28.91 10.0 undecidable manual SG 353 0.0063 -0.26 0.7
--.CSNT.Z. 1999-03-22T16:25:28.54 10.0 undecidable manual PN 292 0.0113 0.75 1
--.MNS.Z. 1999-03-22T16:25:27.60 10.0 undecidable manual SG 193 0.0056 0.27 0.8
--.PGD.Z. 1999-03-22T16:25:27.30 10.0 undecidable manual PN 316 0.0109 0 1.5
--.SFI.Z. 1999-03-22T16:25:27.35 10.0 undecidable manual PN 320 0.0106 0.59 1.2
--.PQ9.Z. 1999-03-22T16:25:23.33 10.0 undecidable manual PG 158 0.0093 -1.29 0.5
--.AQU.Z. 1999-03-22T16:25:18.32 10.0 undecidable manual PG 149 0.0066 -0.75 1.3
--.FB9.Z. 1999-03-22T16:25:17.00 10.0 undecidable manual PG 353 0.0063 -1.3 0.6
--.MNS.Z. 1999-03-22T16:25:15.87 10.0 undecidable manual PG 193 0.0056 -1.05 0.9
--.SNTG.Z. 1999-03-22T16:25:14.16 10.0 undecidable manual SG 8 0.0023 0.52 0.6
--.NRCA.Z. 1999-03-22T16:25:13.00 10.0 undecidable manual SG 133 0.002 0.59 0.6
--.ASS.Z. 1999-03-22T16:25:10.24 10.0 undecidable manual SG 291 0.0016 -0.39 0.7
--.NRCA.Z. 1999-03-22T16:25:09.23 10.0 undecidable manual PG 133 0.002 0.61 1.5
--.SNTG.Z. 1999-03-22T16:25:09.60 10.0 undecidable manual PG 8 0.0023 -0.27 1.9
--.ASS.Z. 1999-03-22T16:25:07.69 10.0 undecidable manual PG 291 0.0016 0.1 1.9
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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