Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.6 on date 19-10-1988 and time 18:48:09 (Italy) in region 5 km SW Preci (PG)

A magnitude Md 2.6 earthquake occured in region: 5 km SW Preci (PG), on

  • 19-10-1988 17:48:09 (UTC)
  • 19-10-1988 18:48:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.84, 13 at 0 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Preci PG 5 724 724
Cerreto di Spoleto PG 7 1075 1799
Sellano PG 8 1079 2878
Norcia PG 10 4957 7835
Visso MC 12 1107 8942
Vallo di Nera PG 14 364 9306
Cascia PG 14 3217 12523
Castelsantangelo sul Nera MC 14 281 12804
Poggiodomo PG 15 117 12921
Ussita MC 16 444 13365
Monte Cavallo MC 17 145 13510
Sant'Anatolia di Narco PG 18 564 14074
Campello sul Clitunno PG 18 2442 16516
Scheggino PG 20 461 16977

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Foligno (57155 inhabitants)
42 Km NE of Terni (111501 inhabitants)
58 Km SE of Perugia (166134 inhabitants)
61 Km W of Teramo (54892 inhabitants)
64 Km NW of L'Aquila (69753 inhabitants)
87 Km NE of Viterbo (67173 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
96 Km N of Guidonia Montecelio (88673 inhabitants)
99 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 2.6
ML-VAX 1.8 		1988-10-19
17:48:09		 42.84 13 0 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 79269
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-10-19 17:48:09 ± 0.175
Latitude 42.84 ± 0.01
Longitude 13.00 ± 0.01
Depth (km) 0 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 79269

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) 1312.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.0021
Epicentral distance of station farthest from the epicenter (degree) 0.01149
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 79269
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:14:35

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 79269
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
--.SDI.Z. 1988-10-19T17:48:53.63 10.0 undecidable manual SN 151 0.0115 0.37 0.3
--.AZI.Z. 1988-10-19T17:48:43.44 10.0 undecidable manual SG 159 0.0082 0.68 0.2
--.AM8.Z. 1988-10-19T17:48:40.43 10.0 undecidable manual SG 31 0.0074 0.35 0.4
--.AOI.Z. 1988-10-19T17:48:40.40 10.0 undecidable manual SG 31 0.0074 0.32 0.7
--.SDI.Z. 1988-10-19T17:48:35.53 10.0 undecidable manual PN 151 0.0115 0.73 0.5
--.ARV.Z. 1988-10-19T17:48:34.10 10.0 undecidable manual SG 356 0.0059 -0.46 0.4
--.AQU.Z. 1988-10-19T17:48:32.51 10.0 undecidable manual SG 148 0.0051 0.87 0.2
--.AZI.Z. 1988-10-19T17:48:29.70 10.0 undecidable manual PG 159 0.0082 0.95 0.3
--.MNS.Z. 1988-10-19T17:48:28.80 10.0 undecidable manual SG 207 0.0046 -1.31 0
--.AOI.Z. 1988-10-19T17:48:26.60 10.0 undecidable manual PG 31 0.0074 -0.59 0.8
--.AM8.Z. 1988-10-19T17:48:26.64 10.0 undecidable manual PG 31 0.0074 -0.55 0.8
--.ALP.Z. 1988-10-19T17:48:25.20 10.0 undecidable manual SG 98 0.0037 -0.66 0.5
--.CIO.Z. 1988-10-19T17:48:23.70 10.0 undecidable manual SG 17 0.0032 -0.05 1
--.AQU.Z. 1988-10-19T17:48:23.40 10.0 undecidable manual PG 148 0.0051 0.71 0.7
--.ARV.Z. 1988-10-19T17:48:23.62 10.0 undecidable manual PG 356 0.0059 -0.34 1.3
--.CM8.Z. 1988-10-19T17:48:23.70 10.0 undecidable manual SG 17 0.0032 -0.05 1
--.ASS.Z. 1988-10-19T17:48:22.67 10.0 undecidable manual SG 311 0.003 0.2 0.6
--.MNS.Z. 1988-10-19T17:48:20.37 10.0 positive manual PG 207 0.0046 -0.65 1.6
--.SS8.Z. 1988-10-19T17:48:19.20 10.0 undecidable manual SG 46 0.0021 0.5 0.7
--.ALP.Z. 1988-10-19T17:48:18.40 10.0 undecidable manual PG 98 0.0037 -0.59 1.9
--.CM8.Z. 1988-10-19T17:48:17.65 10.0 positive manual PG 17 0.0032 -0.12 3.1
--.ASS.Z. 1988-10-19T17:48:17.68 10.0 positive manual PG 311 0.003 0.64 1.7
--.CIO.Z. 1988-10-19T17:48:17.70 10.0 undecidable manual PG 17 0.0032 -0.07 3.2
--.SS8.Z. 1988-10-19T17:48:15.40 10.0 undecidable manual PG 46 0.0021 0.55 2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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