Earthquake with magnitude of Md 2.7 on date 17-02-1986 and time 09:25:39 (Italy) in region 5 km E Fornelli (IS)

A magnitude Md 2.7 earthquake occured in region: 5 km E Fornelli (IS), on

  • 17-02-1986 08:25:39 (UTC)
  • 17-02-1986 09:25:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.6280, 14.1920 at 9 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
Fornelli IS 5 1909 1909
Miranda IS 5 1047 2956
Isernia IS 5 21842 24798
Acquaviva d'Isernia IS 6 425 25223
Macchia d'Isernia IS 7 1035 26258
Forlì del Sannio IS 8 675 26933
Pesche IS 8 1661 28594
Cerro al Volturno IS 8 1281 29875
Colli a Volturno IS 8 1349 31224
Roccasicura IS 9 550 31774
Rocchetta a Volturno IS 9 1113 32887
Montaquila IS 9 2456 35343
Pettoranello del Molise IS 9 460 35803
Sant'Agapito IS 10 1496 37299
Rionero Sannitico IS 10 1118 38417
Scapoli IS 11 680 39097
Castel San Vincenzo IS 11 516 39613
Monteroduni IS 12 2264 41877
Carpinone IS 12 1157 43034
Sessano del Molise IS 12 727 43761
Longano IS 13 690 44451
Carovilli IS 13 1359 45810
Pescolanciano IS 13 855 46665
Pizzone IS 14 329 46994
Montenero Val Cocchiara IS 14 538 47532
Filignano IS 14 648 48180
Castelpizzuto IS 15 155 48335
Castelpetroso IS 15 1680 50015
Pozzilli IS 17 2380 52395
Chiauci IS 17 233 52628
Santa Maria del Molise IS 17 665 53293
Vastogirardi IS 17 704 53997
Alfedena AQ 18 864 54861
Capriati a Volturno CE 18 1541 56402
San Pietro Avellana IS 18 503 56905
Gallo Matese CE 18 579 57484
Civitanova del Sannio IS 18 945 58429
Scontrone AQ 18 574 59003
Castel di Sangro AQ 19 6538 65541
Fontegreca CE 19 811 66352
Macchiagodena IS 19 1854 68206
Venafro IS 20 11280 79486
Ciorlano CE 20 426 79912
Roccamandolfi IS 20 938 80850
Letino CE 20 712 81562

Municipalities with at least 50000 inhabitants

An earthquake occurred to
63 Km N of Caserta (76326 inhabitants)
73 Km N of Aversa (53047 inhabitants)
74 Km NW of Benevento (60091 inhabitants)
77 Km N of Acerra (59573 inhabitants)
78 Km N of Giugliano in Campania (122974 inhabitants)
79 Km N of Afragola (65057 inhabitants)
81 Km S of Chieti (51815 inhabitants)
81 Km N of Casoria (77642 inhabitants)
81 Km N of Marano di Napoli (59874 inhabitants)
87 Km N of Pozzuoli (81661 inhabitants)
88 Km N of Napoli (974074 inhabitants)
90 Km N of Portici (55274 inhabitants)
92 Km N of Ercolano (53709 inhabitants)
93 Km S of Pescara (121014 inhabitants)
94 Km NW of Avellino (54857 inhabitants)
95 Km N of Torre del Greco (86275 inhabitants)
99 Km S of Montesilvano (53738 inhabitants)
99 Km W of San Severo (53905 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 2.7 1986-02-17
08:25:39
41.628 14.192 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 22789
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-02-17 08:25:39 ± 0.675
Latitude 41.6280 ± 0.0617
Longitude 14.1920 ± 0.0520
Depth (km) 9 ± 7 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 22789

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) 8106.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 144
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.01222
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:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 22789
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:24:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.SGO.Z. 1986-02-17T08:26:04.00 10.0 undecidable manual PN 141 1.3542 0.03 1.3
--.AQU.Z. 1986-02-17T08:25:57.00 10.0 undecidable manual PG 321 0.9213 -0.6 1
--.SD1.Z. 1986-02-17T08:25:51.50 10.0 undecidable manual SG 286 0.2886 0.79 0.4
--.DUI.Z. 1986-02-17T08:25:48.50 10.0 undecidable manual SG 81 0.1998 1.04 0.2
--.SD1.Z. 1986-02-17T08:25:45.60 10.0 undecidable manual PG 286 0.2886 -0.2 2.1
--.DUI.Z. 1986-02-17T08:25:43.20 10.0 undecidable manual PG 81 0.1998 -0.73 1
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, /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