Earthquake with magnitude of Md 3.0 on date 01-09-1986 and time 08:27:05 (UTC) in region 3 km SE Montemonaco (AP)

A magnitude Md 3.0 earthquake occured in region: 3 km SE Montemonaco (AP), on

  • 01-09-1986 08:27:05 (UTC)
  • 01-09-1986 10:27:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8800, 13.3580 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
Montemonaco AP 3 604 604
Montegallo AP 5 523 1127
Montefortino FM 7 1178 2305
Palmiano AP 9 196 2501
Roccafluvione AP 10 2010 4511
Comunanza AP 10 3166 7677
Venarotta AP 11 2066 9743
Amandola FM 11 3629 13372
Arquata del Tronto AP 13 1178 14550
Acquasanta Terme AP 13 2916 17466
Force AP 14 1354 18820
Montefalcone Appennino FM 15 424 19244
Smerillo FM 16 365 19609
Bolognola MC 17 142 19751
Castelsantangelo sul Nera MC 17 281 20032
Sarnano MC 18 3264 23296
Ascoli Piceno AP 18 49407 72703
Monte San Martino MC 18 765 73468
Rotella AP 19 906 74374
Ussita MC 19 444 74818
Santa Vittoria in Matenano FM 19 1330 76148
Valle Castellana TE 20 977 77125

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NW of Teramo (54892 inhabitants)
54 Km E of Foligno (57155 inhabitants)
59 Km N of L'Aquila (69753 inhabitants)
68 Km NE of Terni (111501 inhabitants)
76 Km NW of Montesilvano (53738 inhabitants)
83 Km E of Perugia (166134 inhabitants)
83 Km S of Ancona (100861 inhabitants)
84 Km NW of Pescara (121014 inhabitants)
89 Km NW of Chieti (51815 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 3.0 1986-09-01
08:27:05
42.88 13.358 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 33379
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-09-01 08:27:05 ± 0.332
Latitude 42.8800 ± 0.0184
Longitude 13.3580 ± 0.0605
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 33379

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) 5339.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 149
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) 1
Epicentral distance of station closest to the epicenter (degree) 0.00469
Epicentral distance of station farthest from the epicenter (degree) 0.03206
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

Md:3.0

Field Value
Value 3.0
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 33379
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:34:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CTI.Z. 1986-09-01T08:28:00.00 10.0 undecidable manual PN 339 0.0305 1.56 0.3
--.RBL.Z. 1986-09-01T08:27:59.50 10.0 undecidable manual PN 2 0.0321 -1.27 0.5
--.TRI.Z. 1986-09-01T08:27:49.40 10.0 undecidable manual PN 5 0.0256 -1.49 0.4
--.CRE.Z. 1986-09-01T08:27:46.00 10.0 undecidable manual SN 306 0.0113 -0.92 0.6
--.BDI.Z. 1986-09-01T08:27:44.50 10.0 undecidable manual PN 301 0.0209 0.71 1
--.PS9.Z. 1986-09-01T08:27:44.00 10.0 undecidable manual PN 293 0.0200 1.56 0.4
--.ARV.Z. 1986-09-01T08:27:30.00 10.0 undecidable manual SG 334 0.0062 0 0.9
--.SD1.Z. 1986-09-01T08:27:29.50 10.0 undecidable manual PN 163 0.0109 0.92 1
--.RMP.Z. 1986-09-01T08:27:29.00 10.0 undecidable manual PN 204 0.0105 1.02 1
--.CRE.Z. 1986-09-01T08:27:28.00 10.0 undecidable manual PN 306 0.0113 -1.22 0.8
--.AQU.Z. 1986-09-01T08:27:24.50 10.0 undecidable manual SG 176 0.0047 -0.32 0.9
--.AM8.Z. 1986-09-01T08:27:20.53 10.0 negative manual PG 14 0.0062 1.02 1.9
--.ARV.Z. 1986-09-01T08:27:18.60 10.0 negative manual PG 334 0.0062 -0.85 2.2
--.AQU.Z. 1986-09-01T08:27:15.50 10.0 negative manual PG 176 0.0047 -0.96 2
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download