Earthquake with magnitude of Md 2.3 on date 02-07-1988 and time 03:56:21 (Italy) in region 5 km SE Monteleone di Spoleto (PG)

A magnitude Md 2.3 earthquake occured in region: 5 km SE Monteleone di Spoleto (PG), on

  • 02-07-1988 01:56:21 (UTC)
  • 02-07-1988 03:56:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.62, 12.99 at 4 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 5 599 599
Leonessa RI 6 2435 3034
Cascia PG 12 3217 6251
Poggiodomo PG 12 117 6368
Polino TR 13 233 6601
Posta RI 13 694 7295
Cittareale RI 14 482 7777
Poggio Bustone RI 15 2055 9832
Rivodutri RI 16 1253 11085
Borbona RI 16 617 11702
Morro Reatino RI 16 373 12075
Ferentillo TR 17 1913 13988
Scheggino PG 17 461 14449
Cantalice RI 18 2755 17204
Sant'Anatolia di Narco PG 18 564 17768
Labro RI 19 374 18142
Arrone TR 19 2763 20905
Montefranco TR 19 1276 22181
Micigliano RI 19 127 22308

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km E of Terni (111501 inhabitants)
44 Km NW of L'Aquila (69753 inhabitants)
45 Km SE of Foligno (57155 inhabitants)
59 Km W of Teramo (54892 inhabitants)
72 Km NE of Guidonia Montecelio (88673 inhabitants)
74 Km SE of Perugia (166134 inhabitants)
74 Km N of Tivoli (56533 inhabitants)
76 Km E of Viterbo (67173 inhabitants)
91 Km NE of Roma (2864731 inhabitants)
95 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
Rev 1000 Md 2.3 1988-07-02
01:56:21
42.62 12.99 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 72699
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-07-02 01:56:21 ± 0.171
Latitude 42.62 ± 0.01
Longitude 12.99 ± 0.02
Depth (km) 4 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 72699

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) 1755.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
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) 0.00291
Epicentral distance of station farthest from the epicenter (degree) 0.00979
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 72699
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:08:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.RDP.Z. 1988-07-02T01:56:52.59 10.0 undecidable manual SG 193 0.0079 -0.6 0.3
--.SDI.Z. 1988-07-02T01:56:44.17 10.0 undecidable manual PN 145 0.0098 0.34 0.9
--.CM8.Z. 1988-07-02T01:56:43.78 10.0 undecidable manual SG 10 0.0053 -0.06 1
--.ASS.Z. 1988-07-02T01:56:42.40 10.0 undecidable manual SG 330 0.0045 0.69 0.3
--.SS8.Z. 1988-07-02T01:56:39.90 10.0 undecidable manual SG 23 0.0038 0.58 0.4
--.ALP.Z. 1988-07-02T01:56:39.76 10.0 undecidable manual SG 68 0.004 0.31 0.5
--.RDP.Z. 1988-07-02T01:56:39.65 10.0 undecidable manual PG 193 0.0079 -0.34 1.1
--.ASS.Z. 1988-07-02T01:56:34.20 10.0 undecidable manual PG 330 0.0045 0.87 0.4
--.MNS.Z. 1988-07-02T01:56:34.40 10.0 undecidable manual SG 224 0.0029 -0.55 0.4
--.CM8.Z. 1988-07-02T01:56:33.69 10.0 undecidable manual PG 10 0.0053 -0.9 1
--.ALP.Z. 1988-07-02T01:56:32.31 10.0 positive manual PG 68 0.004 0.26 2.8
--.SS8.Z. 1988-07-02T01:56:31.00 10.0 undecidable manual PG 23 0.0038 -0.51 1.1
--.MNS.Z. 1988-07-02T01:56:29.54 10.0 positive manual PG 224 0.0029 0.29 2.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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