Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.5 on date 06-09-1990 and time 04:04:04 (UTC) in region 3 km NW Montereale (AQ)

A magnitude Md 2.5 earthquake occured in region: 3 km NW Montereale (AQ), on

  • 06-09-1990 04:04:04 (UTC)
  • 06-09-1990 06:04:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5480, 13.2330 at 10 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
Montereale AQ 3 2581 2581
Capitignano AQ 6 665 3246
Borbona RI 9 617 3863
Cagnano Amiterno AQ 10 1369 5232
Cittareale RI 10 482 5714
Amatrice RI 10 2657 8371
Campotosto AQ 11 542 8913
Barete AQ 11 737 9650
Posta RI 11 694 10344
Pizzoli AQ 13 4326 14670
Accumoli RI 17 667 15337
Micigliano RI 18 127 15464
Antrodoco RI 19 2588 18052
Scoppito AQ 20 3727 21779

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of L'Aquila (69753 inhabitants)
41 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
63 Km SE of Foligno (57155 inhabitants)
74 Km NE of Guidonia Montecelio (88673 inhabitants)
74 Km NE of Tivoli (56533 inhabitants)
75 Km W of Montesilvano (53738 inhabitants)
80 Km W of Chieti (51815 inhabitants)
81 Km W of Pescara (121014 inhabitants)
93 Km SE of Perugia (166134 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
95 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
Bulletin
Rev1000 		Md 2.5
ML-VAX 1.5 		1990-09-06
04:04:04		 42.548 13.233 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 126639
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1990-09-06 04:04:04 ± 0.128
Latitude 42.5480 ± 0.0075
Longitude 13.2330 ± 0.0130
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 126639

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) 1355.3
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 14
Number of defining phases 14
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) 0.00202
Epicentral distance of station farthest from the epicenter (degree) 0.00874
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 4
Type of magnitude Md
Reference to an origin 126639
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:57:47

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 126639
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
--.SDI.Z. 1990-09-06T04:04:37.00 10.0 undecidable manual SG 152 0.9324 0.35 0.3
--.CIO.Z. 1990-09-06T04:04:28.20 10.0 undecidable manual SG 354 0.6438 0.92 0.1
--.AZI.Z. 1990-09-06T04:04:25.00 10.0 undecidable manual SG 165 0.5772 -0.08 0.6
--.ARV.Z. 1990-09-06T04:04:24.52 10.0 undecidable manual PG 347 0.9657 0.86 0.2
--.SDI.Z. 1990-09-06T04:04:23.40 10.0 undecidable manual PG 152 0.9324 0.33 0.9
--.MNS.Z. 1990-09-06T04:04:20.50 10.0 undecidable manual SG 248 0.4329 -0.03 0.6
--.CP9.Z. 1990-09-06T04:04:18.62 10.0 undecidable manual PG 197 0.7104 -0.29 1.1
--.CIO.Z. 1990-09-06T04:04:17.40 10.0 undecidable manual PG 354 0.6438 -0.26 2.5
--.AZI.Z. 1990-09-06T04:04:17.00 10.0 undecidable manual PG 165 0.5772 0.61 0.6
--.ALP.Z. 1990-09-06T04:04:16.70 10.0 undecidable manual SG 46 0.333 -0.57 0.4
--.AQU.Z. 1990-09-06T04:04:14.26 10.0 undecidable manual SG 147 0.222 0.42 0.4
--.MNS.Z. 1990-09-06T04:04:13.46 10.0 positive manual PG 248 0.4329 -0.3 2.5
--.ALP.Z. 1990-09-06T04:04:11.60 10.0 undecidable manual PG 46 0.333 -0.28 2.6
--.AQU.Z. 1990-09-06T04:04:09.57 10.0 undecidable manual PG 147 0.222 -0.33 1.2
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