Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.5 on date 26-10-1989 and time 23:40:18 (UTC) in region 3 km E Cagnano Amiterno (AQ)

A magnitude Md 2.5 earthquake occured in region: 3 km E Cagnano Amiterno (AQ), on

  • 26-10-1989 23:40:18 (UTC)
  • 27-10-1989 00:40:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4720, 13.2550 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Cagnano Amiterno AQ 3 1369 1369
Barete AQ 3 737 2106
Pizzoli AQ 5 4326 6432
Montereale AQ 6 2581 9013
Capitignano AQ 7 665 9678
Borbona RI 11 617 10295
Scoppito AQ 11 3727 14022
Campotosto AQ 14 542 14564
Posta RI 14 694 15258
Antrodoco RI 16 2588 17846
Micigliano RI 17 127 17973
Borgo Velino RI 18 972 18945
L'Aquila AQ 18 69753 88698
Amatrice RI 18 2657 91355
Cittareale RI 18 482 91837

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NW of L'Aquila (69753 inhabitants)
42 Km SW of Teramo (54892 inhabitants)
51 Km E of Terni (111501 inhabitants)
68 Km NE of Tivoli (56533 inhabitants)
68 Km NE of Guidonia Montecelio (88673 inhabitants)
70 Km SE of Foligno (57155 inhabitants)
74 Km W of Montesilvano (53738 inhabitants)
76 Km W of Chieti (51815 inhabitants)
79 Km W of Pescara (121014 inhabitants)
90 Km NE of Roma (2864731 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
96 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
Bulletin
Rev1000 		Md 2.5
ML-VAX 1.6 		1989-10-26
23:40:18		 42.472 13.255 5 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 103049
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-10-26 23:40:18 ± 0.136
Latitude 42.4720 ± 0.0067
Longitude 13.2550 ± 0.0117
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 103049

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) 1219.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
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) 0.00138
Epicentral distance of station farthest from the epicenter (degree) 0.00939
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 103049
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:36:01

ML:1.6

Field Value
Value 1.6
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 103049
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(km) Takeoff_angle Residual Weight
--.ARV.Z. 1989-10-26T23:40:55.49 10.0 undecidable manual SG 347 1.0434 0.85 0.1
--.RDP.Z. 1989-10-26T23:40:47.50 10.0 undecidable manual SG 209 0.8103 0.34 0.6
--.CM8.Z. 1989-10-26T23:40:44.61 10.0 undecidable manual SG 353 0.7215 0.38 0.6
--.ASS.Z. 1989-10-26T23:40:44.74 10.0 undecidable manual SG 323 0.7326 0.17 0.7
--.CP9.Z. 1989-10-26T23:40:41.47 10.0 undecidable manual SG 200 0.6438 -0.31 0.6
--.ARV.Z. 1989-10-26T23:40:39.75 10.0 undecidable manual PG 347 1.0434 0.58 0.7
--.MNS.Z. 1989-10-26T23:40:34.17 10.0 undecidable manual SG 258 0.4329 -0.63 0.3
--.RDP.Z. 1989-10-26T23:40:34.50 10.0 undecidable manual PG 209 0.8103 -0.35 1.4
--.CM8.Z. 1989-10-26T23:40:33.12 10.0 undecidable manual PG 353 0.7215 -0.05 1.9
--.ASS.Z. 1989-10-26T23:40:33.56 10.0 undecidable manual PG 323 0.7326 0.2 1.7
--.CP9.Z. 1989-10-26T23:40:32.45 10.0 undecidable manual PG 200 0.6438 0.7 0.7
--.ALP.Z. 1989-10-26T23:40:32.80 10.0 undecidable manual SG 36 0.3774 -0.84 0.2
--.MNS.Z. 1989-10-26T23:40:27.38 10.0 positive manual PG 258 0.4329 -0.33 3.3
--.ALP.Z. 1989-10-26T23:40:25.89 10.0 undecidable manual PG 36 0.3774 -0.74 0.6
--.AQU.Z. 1989-10-26T23:40:24.52 10.0 undecidable manual SG 137 0.1554 0.06 0.8
--.AQU.Z. 1989-10-26T23:40:22.10 10.0 undecidable manual PG 137 0.1554 0.27 1.8
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download