Earthquake with magnitude of Md 2.7 on date 03-03-1991 and time 05:23:36 (Italy) in region 4 km SE Cascia (PG)

A magnitude Md 2.7 earthquake occured in region: 4 km SE Cascia (PG), on

  • 03-03-1991 04:23:36 (UTC)
  • 03-03-1991 05:23:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.68, 13.04 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 4 3217 3217
Monteleone di Spoleto PG 8 599 3816
Poggiodomo PG 9 117 3933
Cittareale RI 12 482 4415
Norcia PG 13 4957 9372
Leonessa RI 15 2435 11807
Vallo di Nera PG 17 364 12171
Scheggino PG 17 461 12632
Accumoli RI 17 667 13299
Sant'Anatolia di Narco PG 17 564 13863
Cerreto di Spoleto PG 18 1075 14938
Posta RI 19 694 15632
Polino TR 19 233 15865

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Terni (111501 inhabitants)
41 Km SE of Foligno (57155 inhabitants)
47 Km NW of L'Aquila (69753 inhabitants)
55 Km W of Teramo (54892 inhabitants)
71 Km SE of Perugia (166134 inhabitants)
80 Km NE of Guidonia Montecelio (88673 inhabitants)
82 Km E of Viterbo (67173 inhabitants)
83 Km N of Tivoli (56533 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
99 Km NE of Roma (2864731 inhabitants)
99 Km W of Pescara (121014 inhabitants)
100 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 2.7
M 2.9
1991-03-03
04:23:36
42.69 13.04 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 137019
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-03-03 04:23:36 ± 0.131
Latitude 42.69 ± 0.01
Longitude 13.04 ± 0.01
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 137019

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) 1451.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
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) 0.00356
Epicentral distance of station farthest from the epicenter (degree) 0.01392
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

Md:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 10
Type of magnitude Md
Reference to an origin 137019
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:07:45

M:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 137019
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:32:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CRE.Z. 1991-03-03T04:24:17.00 10.0 undecidable manual SN 320 0.011 -0.53 0.4
--.AOI.Z. 1991-03-03T04:24:11.39 10.0 undecidable manual SG 25 0.0086 1.29 0.1
--.RDP.Z. 1991-03-03T04:24:10.56 10.0 undecidable manual SG 194 0.0086 0.43 0.5
--.RMP.Z. 1991-03-03T04:24:08.79 10.0 undecidable manual SG 196 0.0082 0.21 0.6
--.SFI.Z. 1991-03-03T04:24:05.20 10.0 undecidable manual PN 325 0.0134 1.29 0.1
--.CP9.Z. 1991-03-03T04:24:05.85 10.0 undecidable manual SG 184 0.0074 -0.07 0.7
--.ARV.Z. 1991-03-03T04:24:05.18 10.0 undecidable manual SG 355 0.0073 -0.44 0.5
--.PGD.Z. 1991-03-03T04:24:04.50 10.0 undecidable manual PN 321 0.0137 0.14 1.1
--.RFI.Z. 1991-03-03T04:24:04.74 10.0 undecidable manual PN 153 0.0139 0.05 1.1
--.SSO.Z. 1991-03-03T04:24:02.49 10.0 undecidable manual SG 24 0.006 1.61 0
--.RSM.Z. 1991-03-03T04:24:01.42 10.0 undecidable manual PN 341 0.0118 -0.01 1.3
--.CRE.Z. 1991-03-03T04:24:00.00 10.0 undecidable manual PN 320 0.011 -0.21 1.3
--.RMP.Z. 1991-03-03T04:23:55.36 10.0 undecidable manual PG 196 0.0082 0.32 1.4
--.RDP.Z. 1991-03-03T04:23:55.63 10.0 undecidable manual PG 194 0.0086 -0.31 1.4
--.AOI.Z. 1991-03-03T04:23:55.96 10.0 undecidable manual PG 25 0.0086 0.04 1.5
--.CIO.Z. 1991-03-03T04:23:54.97 10.0 undecidable manual SG 8 0.0046 -0.98 0.3
--.ASS.Z. 1991-03-03T04:23:53.76 10.0 undecidable manual SG 323 0.0042 -0.79 0.3
--.CP9.Z. 1991-03-03T04:23:53.31 10.0 undecidable manual PG 184 0.0074 -0.2 1.6
--.SSO.Z. 1991-03-03T04:23:52.16 10.0 undecidable manual PG 24 0.006 1.56 0.1
--.ARV.Z. 1991-03-03T04:23:52.85 10.0 undecidable manual PG 355 0.0073 -0.48 1.2
--.AZI.Z. 1991-03-03T04:23:52.85 10.0 undecidable manual PG 157 0.0068 0.61 1
--.AQU.Z. 1991-03-03T04:23:52.22 10.0 undecidable manual SG 141 0.0038 -0.82 0.3
--.MNS.Z. 1991-03-03T04:23:51.56 10.0 undecidable manual SG 221 0.0036 -0.48 0.5
--.ALP.Z. 1991-03-03T04:23:50.95 10.0 undecidable manual SG 76 0.0036 -1.08 0.2
--.CIO.Z. 1991-03-03T04:23:47.11 10.0 undecidable manual PG 8 0.0046 -0.64 2
--.ASS.Z. 1991-03-03T04:23:46.65 10.0 undecidable manual PG 323 0.0042 -0.29 1.5
--.MNS.Z. 1991-03-03T04:23:45.48 10.0 positive manual PG 221 0.0036 -0.01 3.3
--.AQU.Z. 1991-03-03T04:23:45.91 10.0 undecidable manual PG 141 0.0038 -0.16 1.6
--.ALP.Z. 1991-03-03T04:23:45.48 10.0 undecidable manual PG 76 0.0036 -0.01 3.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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