Earthquake with magnitude of Md 2.0 on date 26-06-1991 and time 00:34:59 (Italy) in region 3 km SW Capitignano (AQ)

A magnitude Md 2.0 earthquake occured in region: 3 km SW Capitignano (AQ), on

  • 25-06-1991 22:34:59 (UTC)
  • 26-06-1991 00:34:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.51, 13.27 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
Montereale AQ 3 2581 2581
Capitignano AQ 3 665 3246
Barete AQ 6 737 3983
Cagnano Amiterno AQ 7 1369 5352
Pizzoli AQ 8 4326 9678
Campotosto AQ 10 542 10220
Borbona RI 11 617 10837
Amatrice RI 14 2657 13494
Posta RI 15 694 14188
Scoppito AQ 15 3727 17915
Cittareale RI 15 482 18397
Crognaleto TE 18 1297 19694
Antrodoco RI 19 2588 22282
Micigliano RI 19 127 22409

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of L'Aquila (69753 inhabitants)
39 Km W of Teramo (54892 inhabitants)
52 Km E of Terni (111501 inhabitants)
68 Km SE of Foligno (57155 inhabitants)
72 Km NE of Tivoli (56533 inhabitants)
72 Km NE of Guidonia Montecelio (88673 inhabitants)
72 Km W of Montesilvano (53738 inhabitants)
76 Km W of Chieti (51815 inhabitants)
77 Km W of Pescara (121014 inhabitants)
94 Km NE of Roma (2864731 inhabitants)
96 Km E of Viterbo (67173 inhabitants)
98 Km SE of Perugia (166134 inhabitants)
100 Km NE of Velletri (53303 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 2.0 1991-06-25
22:34:59
42.51 13.27 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 144109
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-06-25 22:34:59 ± 0.3
Latitude 42.51 ± 0.02
Longitude 13.27 ± 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 144109

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) 3167
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 161
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.00915
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

Field Value
Value 2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 144109
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:14:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 1991-06-25T22:35:36.36 10.0 undecidable manual SG 346 0.0091 1.5 0.1
--.ASS.Z. 1991-06-25T22:35:25.20 10.0 undecidable manual SG 321 0.0064 0.06 0.8
--.ARV.Z. 1991-06-25T22:35:20.00 10.0 undecidable manual PG 346 0.0091 0.2 1.5
--.MNS.Z. 1991-06-25T22:35:17.39 10.0 undecidable manual SG 254 0.004 0.76 0.4
--.ASS.Z. 1991-06-25T22:35:13.00 10.0 undecidable manual PG 321 0.0064 -1.2 0.4
--.MNS.Z. 1991-06-25T22:35:09.21 10.0 undecidable manual PG 254 0.004 -0.07 2.1
--.AQU.Z. 1991-06-25T22:35:06.78 10.0 undecidable manual SG 147 0.0016 0.39 0.7
--.AQU.Z. 1991-06-25T22:35:03.20 10.0 undecidable manual PG 147 0.0016 -0.16 2
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