Earthquake with magnitude of Md 3.1 on date 11-05-1994 and time 06:08:19 (Italy) in region 7 km SW Castel Ritaldi (PG)

A magnitude Md 3.1 earthquake occured in region: 7 km SW Castel Ritaldi (PG), on

  • 11-05-1994 04:08:19 (UTC)
  • 11-05-1994 06:08:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.77, 12.64 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
Castel Ritaldi PG 7 3278 3278
Spoleto PG 9 38218 41496
Giano dell'Umbria PG 9 3846 45342
Massa Martana PG 10 3770 49112
Acquasparta TR 12 4778 53890
Campello sul Clitunno PG 12 2442 56332
Montefalco PG 14 5679 62011
Trevi PG 15 8469 70480
Sant'Anatolia di Narco PG 16 564 71044
Scheggino PG 16 461 71505
Gualdo Cattaneo PG 18 6155 77660
Vallo di Nera PG 18 364 78024
Montecastrilli TR 18 5022 83046
San Gemini TR 19 5018 88064
Bevagna PG 19 5081 93145
Todi PG 19 16851 109996

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km S of Foligno (57155 inhabitants)
23 Km N of Terni (111501 inhabitants)
43 Km SE of Perugia (166134 inhabitants)
59 Km NE of Viterbo (67173 inhabitants)
77 Km NW of L'Aquila (69753 inhabitants)
85 Km N of Guidonia Montecelio (88673 inhabitants)
87 Km W of Teramo (54892 inhabitants)
90 Km N of Tivoli (56533 inhabitants)
98 Km N of Roma (2864731 inhabitants)
99 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
Rev 1000 Md 3.1
ML-VAX 2.2
1994-05-11
04:08:19
42.77 12.65 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 209289
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1994-05-11 04:08:19 ± 0.218
Latitude 42.77 ± 0.01
Longitude 12.65 ± 0.04
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 209289

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) 3542.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 151
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.8
Epicentral distance of station closest to the epicenter (degree) 0.00259
Epicentral distance of station farthest from the epicenter (degree) 0.01222
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 209289
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:17:13

ML:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 209289
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
--.PGD.Z. 1994-05-11T04:09:03.35 10.0 undecidable manual SN 329 0.0117 1.32 0.3
--.SFI.Z. 1994-05-11T04:09:02.50 10.0 undecidable manual SN 333 0.0114 0.94 0.5
--.CRE.Z. 1994-05-11T04:08:54.50 10.0 undecidable manual SG 329 0.0089 0.43 0.8
--.RDP.Z. 1994-05-11T04:08:54.86 10.0 undecidable manual SG 176 0.0091 0.23 0.8
--.RMP.Z. 1994-05-11T04:08:52.99 10.0 undecidable manual SG 177 0.0086 0.07 0.8
--.ARV.Z. 1994-05-11T04:08:46.00 10.0 undecidable manual SG 16 0.0068 -0.75 0.7
--.SDI.Z. 1994-05-11T04:08:46.76 10.0 undecidable manual PN 140 0.0122 1.83 0.3
--.AQU.Z. 1994-05-11T04:08:46.70 10.0 undecidable manual SG 126 0.0062 1.58 0.2
--.SFI.Z. 1994-05-11T04:08:44.43 10.0 undecidable manual PN 333 0.0114 0.7 1.4
--.PGD.Z. 1994-05-11T04:08:43.29 10.0 undecidable manual PN 329 0.0117 -0.71 1.4
--.RSM.Z. 1994-05-11T04:08:43.86 10.0 undecidable manual PN 353 0.0105 1.59 0.5
--.RDP.Z. 1994-05-11T04:08:39.25 10.0 undecidable manual PG 176 0.0091 -0.48 1.8
--.CRE.Z. 1994-05-11T04:08:38.64 10.0 undecidable manual PG 329 0.0089 -0.77 1.5
--.RMP.Z. 1994-05-11T04:08:38.50 10.0 undecidable manual PG 177 0.0086 -0.24 2
--.AQU.Z. 1994-05-11T04:08:33.38 10.0 undecidable manual PG 126 0.0062 -0.49 1.9
--.ARV.Z. 1994-05-11T04:08:33.85 10.0 undecidable manual PG 16 0.0068 -1.33 0.9
--.MNS.Z. 1994-05-11T04:08:32.95 10.0 undecidable manual SG 176 0.0034 -1.25 0.4
--.ASS.Z. 1994-05-11T04:08:30.70 10.0 undecidable manual SG 0 0.0026 -0.19 0.9
--.MNS.Z. 1994-05-11T04:08:26.99 10.0 undecidable manual PG 176 0.0034 -0.95 1.4
--.ASS.Z. 1994-05-11T04:08:25.19 10.0 undecidable manual PG 0 0.0026 -0.83 1.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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