Earthquake with magnitude of Md 3.0 on date 22-04-1994 and time 09:57:08 (Italy) in region 9 km E Umbertide (PG)

A magnitude Md 3.0 earthquake occured in region: 9 km E Umbertide (PG), on

  • 22-04-1994 07:57:08 (UTC)
  • 22-04-1994 09:57:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.28, 12.43 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
Umbertide PG 9 16681 16681
Montone PG 12 1680 18361
Gubbio PG 14 32216 50577
Pietralunga PG 18 2111 52688
Valfabbrica PG 20 3389 56077
Perugia PG 20 166134 222211

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km N of Perugia (166134 inhabitants)
43 Km NW of Foligno (57155 inhabitants)
49 Km E of Arezzo (99543 inhabitants)
78 Km SW of Fano (60888 inhabitants)
80 Km SW of Pesaro (94582 inhabitants)
82 Km N of Terni (111501 inhabitants)
87 Km S of Rimini (147750 inhabitants)
89 Km E of Siena (53903 inhabitants)
96 Km W of Ancona (100861 inhabitants)
96 Km S of Cesena (96758 inhabitants)
100 Km N 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
Bulletin
Rev1000
Md 3.0
ML-VAX 2.3
1994-04-22
07:57:08
43.29 12.43 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 208289
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1994-04-22 07:57:08 ± 0.223
Latitude 43.29 ± 0.03
Longitude 12.43 ± 0.05
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 208289

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) 5181.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 140
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.01684
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 208289
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:16:14

ML:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 208289
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
--.AQU.Z. 1994-04-22T07:57:48.70 10.0 undecidable manual SN 142 0.0105 0.24 0.6
--.SDI.Z. 1994-04-22T07:57:41.75 10.0 undecidable manual PN 146 0.0168 1.06 0.6
--.MNS.Z. 1994-04-22T07:57:40.81 10.0 undecidable manual SG 168 0.0083 0.35 0.7
--.SFI.Z. 1994-04-22T07:57:35.19 10.0 undecidable manual SG 326 0.0067 0.18 0.8
--.PGD.Z. 1994-04-22T07:57:34.86 10.0 undecidable manual SG 319 0.007 -1.21 0.3
--.BDI.Z. 1994-04-22T07:57:34.65 10.0 undecidable manual PN 301 0.0138 -1.38 0.4
--.AQU.Z. 1994-04-22T07:57:31.68 10.0 undecidable manual PN 142 0.0105 0.63 1.2
--.CRE.Z. 1994-04-22T07:57:27.21 10.0 undecidable manual SG 314 0.0043 0.75 0.5
--.MNS.Z. 1994-04-22T07:57:25.91 10.0 undecidable manual PG 168 0.0083 -0.88 1.1
--.SFI.Z. 1994-04-22T07:57:25.12 10.0 undecidable manual PG 326 0.0067 1.48 0.4
--.PGD.Z. 1994-04-22T07:57:24.94 10.0 undecidable manual PG 319 0.007 0.69 1.4
--.RSM.Z. 1994-04-22T07:57:20.71 10.0 undecidable manual PG 1 0.0057 -0.99 1
--.ASS.Z. 1994-04-22T07:57:18.74 10.0 undecidable manual SG 143 0.0024 -0.13 0.8
--.CRE.Z. 1994-04-22T07:57:18.34 10.0 undecidable manual PG 314 0.0043 -0.37 1.8
--.ASS.Z. 1994-04-22T07:57:13.91 10.0 positive manual PG 143 0.0024 -0.41 3.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download