Earthquake with magnitude of Md 2.8 on date 26-06-1999 and time 13:38:20 (Italy) in region 7 km E Cascia (PG)

A magnitude Md 2.8 earthquake occured in region: 7 km E Cascia (PG), on

  • 26-06-1999 11:38:20 (UTC)
  • 26-06-1999 13:38:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7, 13.1 at 14 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 7 3217 3217
Norcia PG 10 4957 8174
Cittareale RI 11 482 8656
Accumoli RI 12 667 9323
Monteleone di Spoleto PG 13 599 9922
Poggiodomo PG 13 117 10039
Amatrice RI 18 2657 12696
Arquata del Tronto AP 18 1178 13874
Leonessa RI 19 2435 16309
Cerreto di Spoleto PG 20 1075 17384
Posta RI 20 694 18078
Preci PG 20 724 18802

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Terni (111501 inhabitants)
43 Km SE of Foligno (57155 inhabitants)
46 Km NW of L'Aquila (69753 inhabitants)
50 Km W of Teramo (54892 inhabitants)
73 Km SE of Perugia (166134 inhabitants)
84 Km NE of Guidonia Montecelio (88673 inhabitants)
86 Km N of Tivoli (56533 inhabitants)
87 Km E of Viterbo (67173 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
95 Km W of Pescara (121014 inhabitants)
96 Km W of Chieti (51815 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 1.6
1999-06-26
11:38:20
42.7 13.1 14 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 369369
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1999-06-26 11:38:20 ± 0.15
Latitude 42.70 ± 0.01
Longitude 13.10 ± 0.02
Depth (km) 14 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 369369

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) 1650.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00113
Epicentral distance of station farthest from the epicenter (degree) 0.00907
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

Md:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 369369
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:46:34

ML:1.6

Field Value
Value 1.6
Uncertainty
Num. used stations 5
Type of magnitude ML
Reference to an origin 369369
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
--.ARV.Z. 1999-06-26T11:38:48.27 10.0 undecidable manual SG 352 0.0072 0.16 0.5
--.FB9.Z. 1999-06-26T11:38:40.33 10.0 undecidable manual PN 346 0.0091 0.33 0.8
--.SNTG.Z. 1999-06-26T11:38:40.31 10.0 undecidable manual SG 348 0.005 -0.14 0.7
--.ASS.Z. 1999-06-26T11:38:37.90 10.0 undecidable manual SG 317 0.0043 -0.05 0.7
--.MNS.Z. 1999-06-26T11:38:37.00 10.0 undecidable manual SG 224 0.004 0.41 0.4
--.ARV.Z. 1999-06-26T11:38:35.69 10.0 undecidable manual PG 352 0.0072 -0.72 0.2
--.ASS.Z. 1999-06-26T11:38:31.20 10.0 undecidable manual PG 317 0.0043 0.48 0.8
--.SNTG.Z. 1999-06-26T11:38:31.66 10.0 undecidable manual PG 348 0.005 -0.32 1.2
--.MNS.Z. 1999-06-26T11:38:29.31 10.0 undecidable manual PG 224 0.004 -0.45 0.9
--.AQU.Z. 1999-06-26T11:38:29.41 10.0 undecidable manual PG 147 0.0037 0.15 1.7
--.NRCA.Z. 1999-06-26T11:38:27.55 10.0 undecidable manual SG 4 0.0011 0.56 0.2
--.NRCA.Z. 1999-06-26T11:38:24.23 10.0 negative manual PG 4 0.0011 0.01 3.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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