Earthquake with magnitude of Md 2.5 on date 26-01-1991 and time 20:53:10 (Italy) in region 6 km NW Cortino (TE)

A magnitude Md 2.5 earthquake occured in region: 6 km NW Cortino (TE), on

  • 26-01-1991 19:53:10 (UTC)
  • 26-01-1991 20:53:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.66, 13.45 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
Cortino TE 6 656 656
Rocca Santa Maria TE 7 537 1193
Valle Castellana TE 10 977 2170
Crognaleto TE 12 1297 3467
Acquasanta Terme AP 13 2916 6383
Campotosto AQ 13 542 6925
Amatrice RI 14 2657 9582
Fano Adriano TE 14 296 9878
Torricella Sicura TE 17 2641 12519
Montorio al Vomano TE 17 8218 20737
Accumoli RI 17 667 21404
Pietracamela TE 17 271 21675
Arquata del Tronto AP 18 1178 22853
Capitignano AQ 20 665 23518

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km W of Teramo (54892 inhabitants)
34 Km N of L'Aquila (69753 inhabitants)
59 Km W of Montesilvano (53738 inhabitants)
66 Km W of Pescara (121014 inhabitants)
67 Km E of Terni (111501 inhabitants)
68 Km NW of Chieti (51815 inhabitants)
69 Km E of Foligno (57155 inhabitants)
94 Km NE of Tivoli (56533 inhabitants)
94 Km NE of Guidonia Montecelio (88673 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 2.5 1991-01-26
19:53:10
42.66 13.45 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 135029
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-01-26 19:53:10 ± 0.845
Latitude 42.66 ± 0.02
Longitude 13.45 ± 0.07
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 135029

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) 5830.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 268
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
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) 0.00567
Epicentral distance of station farthest from the epicenter (degree) 0.0153
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 135029
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:05:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SFI.Z. 1991-01-26T19:54:04.00 10.0 undecidable manual SN 316 0.0153 1.45 0
--.ARV.Z. 1991-01-26T19:53:42.00 10.0 undecidable manual SG 335 0.0083 -0.48 0.5
--.SFI.Z. 1991-01-26T19:53:41.00 10.0 undecidable manual PN 316 0.0153 0.61 0.7
--.ASS.Z. 1991-01-26T19:53:35.80 10.0 undecidable manual SG 304 0.0064 -0.05 0.7
--.MNS.Z. 1991-01-26T19:53:32.60 10.0 undecidable manual SG 244 0.0057 -0.63 0.4
--.ARV.Z. 1991-01-26T19:53:28.00 10.0 undecidable manual PG 335 0.0083 -0.8 0.6
--.ASS.Z. 1991-01-26T19:53:25.00 10.0 undecidable manual PG 304 0.0064 0.02 1.7
--.MNS.Z. 1991-01-26T19:53:23.50 10.0 negative manual PG 244 0.0057 0.03 3.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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