Earthquake with magnitude of Md 2.5 on date 02-03-1994 and time 10:20:27 (UTC) in region 4 km E Todi (PG)

A magnitude Md 2.5 earthquake occured in region: 4 km E Todi (PG), on

  • 02-03-1994 10:20:27 (UTC)
  • 02-03-1994 11:20:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7810, 12.4510 at 8 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
Todi PG 4 16851 16851
Massa Martana PG 6 3770 20621
Monte Castello di Vibio PG 10 1567 22188
Fratta Todina PG 11 1839 24027
Giano dell'Umbria PG 12 3846 27873
Acquasparta TR 13 4778 32651
Collazzone PG 13 3473 36124
Avigliano Umbro TR 14 2558 38682
Montecastrilli TR 15 5022 43704
Gualdo Cattaneo PG 17 6155 49859
Marsciano PG 17 18902 68761
San Venanzo TR 18 2218 70979
Montecchio TR 19 1676 72655
Castel Ritaldi PG 19 3278 75933

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km SW of Foligno (57155 inhabitants)
29 Km NW of Terni (111501 inhabitants)
37 Km S of Perugia (166134 inhabitants)
49 Km NE of Viterbo (67173 inhabitants)
89 Km SE of Arezzo (99543 inhabitants)
90 Km N of Guidonia Montecelio (88673 inhabitants)
91 Km NW of L'Aquila (69753 inhabitants)
94 Km NE of Civitavecchia (52991 inhabitants)
95 Km NW of Tivoli (56533 inhabitants)
99 Km N of Roma (2864731 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
1994-03-02
10:20:27
42.781 12.451 8 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 206009
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1994-03-02 10:20:27 ± 0.13
Latitude 42.7810 ± 0.0034
Longitude 12.4510 ± 0.0106
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 206009

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) 941.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 179
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00283
Epicentral distance of station farthest from the epicenter (degree) 0.01077
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 206009
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:14:01

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 206009
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
--.ARV.Z. 1994-03-02T10:20:55.79 10.0 undecidable manual SG 26 0.7992 0.18 0.4
--.SFI.Z. 1994-03-02T10:20:50.58 10.0 undecidable manual PN 339 1.1988 0.13 1.1
--.CRE.Z. 1994-03-02T10:20:45.67 10.0 undecidable manual PG 336 0.9102 -0.11 1.4
--.ARV.Z. 1994-03-02T10:20:43.52 10.0 undecidable manual PG 26 0.7992 -0.2 0.8
--.MNS.Z. 1994-03-02T10:20:43.53 10.0 undecidable manual SG 156 0.4218 -0.14 0.6
--.ASS.Z. 1994-03-02T10:20:39.82 10.0 undecidable manual SG 27 0.3108 -0.16 0.5
--.MNS.Z. 1994-03-02T10:20:36.90 10.0 undecidable manual PG 156 0.4218 0.07 2
--.ASS.Z. 1994-03-02T10:20:34.86 10.0 undecidable manual PG 27 0.3108 0.16 1.2
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download