Earthquake with magnitude of Md 2.8 on date 24-05-1993 and time 13:11:08 (Italy) in region 4 km S Sellano (PG)

A magnitude Md 2.8 earthquake occured in region: 4 km S Sellano (PG), on

  • 24-05-1993 11:11:08 (UTC)
  • 24-05-1993 13:11:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.86, 12.93 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
Sellano PG 4 1079 1079
Cerreto di Spoleto PG 4 1075 2154
Preci PG 10 724 2878
Vallo di Nera PG 11 364 3242
Campello sul Clitunno PG 13 2442 5684
Trevi PG 15 8469 14153
Norcia PG 15 4957 19110
Sant'Anatolia di Narco PG 16 564 19674
Visso MC 16 1107 20781
Poggiodomo PG 16 117 20898
Monte Cavallo MC 17 145 21043
Cascia PG 17 3217 24260
Scheggino PG 18 461 24721
Castelsantangelo sul Nera MC 19 281 25002
Ussita MC 20 444 25446

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km SE of Foligno (57155 inhabitants)
40 Km NE of Terni (111501 inhabitants)
52 Km SE of Perugia (166134 inhabitants)
67 Km W of Teramo (54892 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
83 Km NE of Viterbo (67173 inhabitants)
97 Km N of Guidonia Montecelio (88673 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
100 Km N of Tivoli (56533 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 2.8
ML-VAX 1.9
1993-05-24
11:11:08
42.86 12.93 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 185799
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-05-24 11:11:08 ± 0.32
Latitude 42.86 ± 0.02
Longitude 12.93 ± 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 185799

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) 3845.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 144
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.00259
Epicentral distance of station farthest from the epicenter (degree) 0.01206
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

Md:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 185799
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:54:25

ML:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 185799
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
--.SFI.Z. 1993-05-24T11:11:35.24 10.0 undecidable manual PN 323 0.0117 1.5 0.2
--.SDI.Z. 1993-05-24T11:11:35.00 10.0 undecidable manual PN 149 0.0118 1.13 0.5
--.PGD.Z. 1993-05-24T11:11:34.35 10.0 undecidable manual PN 319 0.0121 0.14 1.1
--.AQU.Z. 1993-05-24T11:11:33.00 10.0 undecidable manual SG 144 0.0054 1.59 0.1
--.ARV.Z. 1993-05-24T11:11:31.87 10.0 undecidable manual SG 0 0.0057 -0.56 0.5
--.CRE.Z. 1993-05-24T11:11:31.20 10.0 undecidable manual PG 317 0.0094 1.1 0.6
--.MNS.Z. 1993-05-24T11:11:27.21 10.0 undecidable manual SG 200 0.0045 -0.79 0.4
--.AQU.Z. 1993-05-24T11:11:21.41 10.0 undecidable manual PG 144 0.0054 -0.5 1.3
--.ARV.Z. 1993-05-24T11:11:21.50 10.0 negative manual PG 0 0.0057 -1 1.6
--.ASS.Z. 1993-05-24T11:11:20.32 10.0 undecidable manual SG 315 0.0026 0.15 0.6
--.MNS.Z. 1993-05-24T11:11:19.22 10.0 positive manual PG 200 0.0045 -0.72 2.1
--.ASS.Z. 1993-05-24T11:11:15.36 10.0 negative manual PG 315 0.0026 -0.06 3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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