Earthquake with magnitude of Md 2.1 on date 19-09-1994 and time 04:39:38 (Italy) in region 1 km W Gualdo Tadino (PG)

A magnitude Md 2.1 earthquake occured in region: 1 km W Gualdo Tadino (PG), on

  • 19-09-1994 02:39:38 (UTC)
  • 19-09-1994 04:39:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2290, 12.7700 at 46 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
Gualdo Tadino PG 1 15208 15208
Fossato di Vico PG 7 2840 18048
Sigillo PG 12 2404 20452
Nocera Umbra PG 13 5839 26291
Fiuminata MC 14 1402 27693
Esanatoglia MC 15 2034 29727
Costacciaro PG 15 1216 30943
Valfabbrica PG 16 3389 34332
Fabriano AN 16 31480 65812
Sefro MC 17 422 66234
Pioraco MC 18 1134 67368
Valtopina PG 19 1398 68766
Matelica MC 20 9981 78747

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km N of Foligno (57155 inhabitants)
34 Km E of Perugia (166134 inhabitants)
71 Km S of Fano (60888 inhabitants)
74 Km SW of Ancona (100861 inhabitants)
75 Km N of Terni (111501 inhabitants)
76 Km E of Arezzo (99543 inhabitants)
77 Km S of Pesaro (94582 inhabitants)
94 Km S of Rimini (147750 inhabitants)
99 Km NW of Teramo (54892 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 2.1
ML-VAX 2.1
1994-09-19
02:39:38
43.229 12.77 46 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 216639
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1994-09-19 02:39:38 ± 0.525
Latitude 43.2290 ± 0.0248
Longitude 12.7700 ± 0.0528
Depth (km) 46 ± 7 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 216639

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) 5089.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
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) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.01319
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 216639
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:24:27

ML:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 216639
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
--.MNS.Z. 1994-09-19T02:40:06.60 10.0 undecidable manual S 184 0.8436 0.96 0.2
--.RDP.Z. 1994-09-19T02:40:02.00 10.0 undecidable manual P 181 1.4652 -0.6 0.7
--.CRE.Z. 1994-09-19T02:40:01.84 10.0 undecidable manual S 303 0.7104 -0.69 0.4
--.AQU.Z. 1994-09-19T02:39:56.85 10.0 undecidable manual P 151 0.9879 0.79 0.7
--.ARV.Z. 1994-09-19T02:39:54.42 10.0 undecidable manual S 25 0.2997 0.47 0.6
--.CRE.Z. 1994-09-19T02:39:53.90 10.0 undecidable manual P 303 0.7104 0.73 1
--.MNS.Z. 1994-09-19T02:39:53.65 10.0 negative manual P 184 0.8436 -0.51 2.4
--.ASS.Z. 1994-09-19T02:39:51.40 10.0 undecidable manual S 207 0.1776 -0.95 0.3
--.ARV.Z. 1994-09-19T02:39:47.30 10.0 negative manual P 25 0.2997 -0.38 3.1
--.ASS.Z. 1994-09-19T02:39:47.41 10.0 undecidable manual P 207 0.1776 0.93 0.7
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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