Earthquake with magnitude of Md 2.9 on date 27-06-1991 and time 16:01:02 (Italy) in region 5 km NW Cittareale (RI)

A magnitude Md 2.9 earthquake occured in region: 5 km NW Cittareale (RI), on

  • 27-06-1991 14:01:02 (UTC)
  • 27-06-1991 16:01:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.64, 13.11 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
Cittareale RI 5 482 482
Cascia PG 12 3217 3699
Accumoli RI 13 667 4366
Monteleone di Spoleto PG 13 599 4965
Posta RI 13 694 5659
Borbona RI 14 617 6276
Amatrice RI 15 2657 8933
Leonessa RI 15 2435 11368
Poggiodomo PG 16 117 11485
Norcia PG 17 4957 16442
Montereale AQ 17 2581 19023

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Terni (111501 inhabitants)
40 Km NW of L'Aquila (69753 inhabitants)
48 Km SE of Foligno (57155 inhabitants)
49 Km W of Teramo (54892 inhabitants)
78 Km NE of Guidonia Montecelio (88673 inhabitants)
78 Km SE of Perugia (166134 inhabitants)
80 Km NE of Tivoli (56533 inhabitants)
86 Km E of Viterbo (67173 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
93 Km W of Chieti (51815 inhabitants)
93 Km W of Pescara (121014 inhabitants)
98 Km NE of Roma (2864731 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 2.9
ML-VAX 2.2
1991-06-27
14:01:02
42.64 13.11 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 144239
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-06-27 14:01:02 ± 0.279
Latitude 42.64 ± 0.01
Longitude 13.11 ± 0.03
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 144239

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) 2697.9
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 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00316
Epicentral distance of station farthest from the epicenter (degree) 0.014
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

Md:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 144239
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:14:40

ML:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 5
Type of magnitude ML
Reference to an origin 144239
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
--.CRE.Z. 1991-06-27T14:01:45.75 10.0 undecidable manual SN 319 0.0116 0.86 0.4
--.SDI.Z. 1991-06-27T14:01:40.91 10.0 undecidable manual SG 150 0.0096 1.46 0.2
--.ARV.Z. 1991-06-27T14:01:32.63 10.0 undecidable manual SG 352 0.0078 -0.33 0.7
--.SFI.Z. 1991-06-27T14:01:31.62 10.0 undecidable manual PN 324 0.014 1.04 0.7
--.RFI.Z. 1991-06-27T14:01:30.43 10.0 undecidable manual PN 154 0.0134 0.81 1
--.DUI.Z. 1991-06-27T14:01:29.74 10.0 undecidable manual PN 134 0.0125 1.34 0.5
--.CRE.Z. 1991-06-27T14:01:27.55 10.0 undecidable manual PN 319 0.0116 0.64 1.3
--.SDI.Z. 1991-06-27T14:01:23.73 10.0 undecidable manual PG 150 0.0096 -0.03 1.8
--.ASS.Z. 1991-06-27T14:01:22.13 10.0 undecidable manual SG 321 0.0048 -0.32 0.7
--.ARV.Z. 1991-06-27T14:01:18.99 10.0 undecidable manual PG 352 0.0078 -1.02 1
--.MNS.Z. 1991-06-27T14:01:18.34 10.0 undecidable manual SG 231 0.0036 0.21 0.8
--.AQU.Z. 1991-06-27T14:01:14.81 10.0 undecidable manual SG 143 0.0032 -1.47 0.2
--.ASS.Z. 1991-06-27T14:01:13.20 10.0 undecidable manual PG 321 0.0048 -0.75 1.4
--.MNS.Z. 1991-06-27T14:01:11.40 10.0 positive manual PG 231 0.0036 -0.41 3.6
--.AQU.Z. 1991-06-27T14:01:08.98 10.0 undecidable manual PG 143 0.0032 -1.4 0.6
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download