Earthquake with magnitude of Md 2.6 on date 30-12-1988 and time 19:32:20 (Italy) in region 5 km N Cascia (PG)

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

  • 30-12-1988 18:32:20 (UTC)
  • 30-12-1988 19:32:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.76, 13.02 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
Cascia PG 5 3217 3217
Norcia PG 7 4957 8174
Poggiodomo PG 9 117 8291
Cerreto di Spoleto PG 10 1075 9366
Vallo di Nera PG 13 364 9730
Preci PG 13 724 10454
Monteleone di Spoleto PG 13 599 11053
Sant'Anatolia di Narco PG 15 564 11617
Sellano PG 16 1079 12696
Scheggino PG 16 461 13157
Castelsantangelo sul Nera MC 19 281 13438
Visso MC 20 1107 14545
Cittareale RI 20 482 15027

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km SE of Foligno (57155 inhabitants)
38 Km NE of Terni (111501 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
58 Km W of Teramo (54892 inhabitants)
64 Km SE of Perugia (166134 inhabitants)
84 Km E of Viterbo (67173 inhabitants)
88 Km N of Guidonia Montecelio (88673 inhabitants)
91 Km N of Tivoli (56533 inhabitants)
97 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 2.6
ML-VAX 2.1
1988-12-30
18:32:20
42.76 13.02 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 84369
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-12-30 18:32:20 ± 0.164
Latitude 42.76 ± 0.01
Longitude 13.02 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 84369

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) 1556.4
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 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00259
Epicentral distance of station farthest from the epicenter (degree) 0.01085
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 84369
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:19:12

ML:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 84369
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
--.RDP.Z. 1988-12-30T18:32:56.26 10.0 undecidable manual SG 192 0.0092 0.33 0.5
--.AOI.Z. 1988-12-30T18:32:53.10 10.0 undecidable manual SG 28 0.008 1.48 0.1
--.AZI.Z. 1988-12-30T18:32:49.60 10.0 undecidable manual SG 158 0.0074 -0.14 0.6
--.ARV.Z. 1988-12-30T18:32:47.19 10.0 undecidable manual SG 356 0.0066 0.58 0.4
--.SDI.Z. 1988-12-30T18:32:44.20 10.0 undecidable manual PN 150 0.0108 0.75 0.6
--.RDP.Z. 1988-12-30T18:32:41.57 10.0 undecidable manual PG 192 0.0092 0.8 0.6
--.AZI.Z. 1988-12-30T18:32:38.00 10.0 undecidable manual PG 158 0.0074 0.8 0.7
--.AOI.Z. 1988-12-30T18:32:38.90 10.0 undecidable manual PG 28 0.008 0.61 0.9
--.MNS.Z. 1988-12-30T18:32:36.74 10.0 undecidable manual SG 213 0.004 -0.68 0.4
--.CIO.Z. 1988-12-30T18:32:36.50 10.0 undecidable manual SG 12 0.004 -0.61 0.6
--.ASS.Z. 1988-12-30T18:32:35.41 10.0 undecidable manual SG 318 0.0036 -0.18 0.6
--.ARV.Z. 1988-12-30T18:32:34.75 10.0 undecidable manual PG 356 0.0066 -0.64 1
--.ALP.Z. 1988-12-30T18:32:34.90 10.0 undecidable manual SG 87 0.0036 -0.85 0.4
--.SS8.Z. 1988-12-30T18:32:31.90 10.0 undecidable manual SG 32 0.0026 0.53 0.7
--.CIO.Z. 1988-12-30T18:32:29.00 10.0 undecidable manual PG 12 0.004 -0.91 1.3
--.ASS.Z. 1988-12-30T18:32:29.41 10.0 undecidable manual PG 318 0.0036 0.38 1.4
--.MNS.Z. 1988-12-30T18:32:29.71 10.0 positive manual PG 213 0.004 -0.38 2.8
--.ALP.Z. 1988-12-30T18:32:28.60 10.0 undecidable manual PG 87 0.0036 -0.52 2.4
--.SS8.Z. 1988-12-30T18:32:26.90 10.0 undecidable manual PG 32 0.0026 0.3 3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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