Earthquake with magnitude of Md 2.6 on date 04-08-1986 and time 14:25:10 (Italy) in region 3 km S Serrapetrona (MC)

A magnitude Md 2.6 earthquake occured in region: 3 km S Serrapetrona (MC), on

  • 04-08-1986 12:25:10 (UTC)
  • 04-08-1986 14:25:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.15, 13.19 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
Serrapetrona MC 3 966 966
Caldarola MC 4 1823 2789
Belforte del Chienti MC 5 1886 4675
Camporotondo di Fiastrone MC 7 563 5238
Cessapalombo MC 8 512 5750
San Severino Marche MC 9 12726 18476
Camerino MC 10 6974 25450
Tolentino MC 10 20069 45519
San Ginesio MC 12 3498 49017
Castelraimondo MC 12 4587 53604
Pievebovigliana MC 13 866 54470
Fiastra MC 13 559 55029
Gagliole MC 14 620 55649
Acquacanina MC 14 121 55770
Muccia MC 14 915 56685
Colmurano MC 14 1263 57948
Ripe San Ginesio MC 15 852 58800
Fiordimonte MC 15 202 59002
Gualdo MC 16 815 59817
Sarnano MC 16 3264 63081
Pieve Torina MC 16 1458 64539
Urbisaglia MC 16 2628 67167
Pioraco MC 17 1134 68301
Bolognola MC 18 142 68443
Sant'Angelo in Pontano MC 18 1436 69879
Matelica MC 18 9981 79860
Pollenza MC 18 6618 86478
Loro Piceno MC 19 2401 88879
Sefro MC 19 422 89301

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km E of Foligno (57155 inhabitants)
58 Km SW of Ancona (100861 inhabitants)
65 Km E of Perugia (166134 inhabitants)
69 Km NW of Teramo (54892 inhabitants)
78 Km S of Fano (60888 inhabitants)
79 Km NE of Terni (111501 inhabitants)
87 Km S of Pesaro (94582 inhabitants)
91 Km N of L'Aquila (69753 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 2.6 1986-08-04
12:25:10
43.15 13.19 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 32099
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-08-04 12:25:10 ± 0.918
Latitude 43.15 ± 0.02
Longitude 13.19 ± 0.05
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 32099

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) 4950.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 283
Number of associated phases, regardless of their use for origin computation 5
Number of defining phases 5
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) 0.00348
Epicentral distance of station farthest from the epicenter (degree) 0.00907
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 32099
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:33:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CRE.Z. 1986-08-04T12:25:32.00 10.0 undecidable manual PG 297 0.0091 1.05 0.1
--.ASS.Z. 1986-08-04T12:25:26.00 10.0 undecidable manual SG 256 0.0036 -0.04 0.6
--.ARV.Z. 1986-08-04T12:25:25.50 10.0 undecidable manual SG 332 0.0035 -0.1 0.8
--.ASS.Z. 1986-08-04T12:25:19.00 10.0 undecidable manual PG 256 0.0036 -0.49 0.9
--.ARV.Z. 1986-08-04T12:25:19.00 10.0 negative manual PG 332 0.0035 -0.24 2.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download