Earthquake with magnitude of Md 2.1 on date 22-09-1994 and time 03:58:00 (Italy) in region 2 km N Monteleone di Spoleto (PG)

A magnitude Md 2.1 earthquake occured in region: 2 km N Monteleone di Spoleto (PG), on

  • 22-09-1994 01:58:00 (UTC)
  • 22-09-1994 03:58:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6690, 12.9490 at 10 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
Monteleone di Spoleto PG 2 599 599
Poggiodomo PG 5 117 716
Cascia PG 8 3217 3933
Scheggino PG 11 461 4394
Sant'Anatolia di Narco PG 12 564 4958
Leonessa RI 12 2435 7393
Polino TR 13 233 7626
Vallo di Nera PG 13 364 7990
Ferentillo TR 14 1913 9903
Montefranco TR 17 1276 11179
Cerreto di Spoleto PG 17 1075 12254
Arrone TR 17 2763 15017
Cittareale RI 18 482 15499
Norcia PG 18 4957 20456
Morro Reatino RI 18 373 20829
Rivodutri RI 19 1253 22082
Spoleto PG 19 38218 60300
Poggio Bustone RI 19 2055 62355
Labro RI 20 374 62729

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Terni (111501 inhabitants)
38 Km SE of Foligno (57155 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
62 Km W of Teramo (54892 inhabitants)
67 Km SE of Perugia (166134 inhabitants)
75 Km E of Viterbo (67173 inhabitants)
77 Km N of Guidonia Montecelio (88673 inhabitants)
79 Km N of Tivoli (56533 inhabitants)
94 Km NE of Roma (2864731 inhabitants)
100 Km W of Montesilvano (53738 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 1.5
1994-09-22
01:58:00
42.669 12.949 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 216709
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1994-09-22 01:58:00 ± 0.147
Latitude 42.6690 ± 0.0071
Longitude 12.9490 ± 0.0152
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 216709

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) 1472.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00308
Epicentral distance of station farthest from the epicenter (degree) 0.00745
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 216709
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:24:31

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 216709
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. 1994-09-22T01:58:29.13 10.0 undecidable manual SG 359 0.8214 0.04 0.7
--.ARV.Z. 1994-09-22T01:58:17.85 10.0 undecidable manual PG 359 0.8214 0.83 0.5
--.AQU.Z. 1994-09-22T01:58:17.46 10.0 undecidable manual SG 132 0.444 0.29 0.7
--.ASS.Z. 1994-09-22T01:58:16.54 10.0 undecidable manual SG 330 0.444 -0.35 0.5
--.MNS.Z. 1994-09-22T01:58:13.53 10.0 undecidable manual SG 214 0.3441 -0.02 0.9
--.AQU.Z. 1994-09-22T01:58:09.66 10.0 undecidable manual PG 132 0.444 -0.48 1.3
--.ASS.Z. 1994-09-22T01:58:09.65 10.0 undecidable manual PG 330 0.444 -0.33 1.5
--.MNS.Z. 1994-09-22T01:58:08.28 10.0 undecidable manual PG 214 0.3441 0.23 2
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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