Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.5 on date 01-01-1989 and time 02:32:18 (UTC) in region 1 km NE Ussita (MC)

A magnitude Md 2.5 earthquake occured in region: 1 km NE Ussita (MC), on

  • 01-01-1989 02:32:18 (UTC)
  • 01-01-1989 03:32:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9550, 13.1490 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
Ussita MC 1 444 444
Visso MC 6 1107 1551
Castelsantangelo sul Nera MC 7 281 1832
Bolognola MC 8 142 1974
Acquacanina MC 9 121 2095
Fiastra MC 9 559 2654
Fiordimonte MC 10 202 2856
Preci PG 12 724 3580
Monte Cavallo MC 13 145 3725
Pieve Torina MC 13 1458 5183
Pievebovigliana MC 13 866 6049
Sarnano MC 15 3264 9313
Montemonaco AP 16 604 9917
Montefortino FM 16 1178 11095
Muccia MC 17 915 12010
Amandola FM 17 3629 15639
Norcia PG 19 4957 20596
Sellano PG 19 1079 21675
Cessapalombo MC 19 512 22187
Montegallo AP 20 523 22710
Gualdo MC 20 815 23525

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
56 Km NW of Teramo (54892 inhabitants)
60 Km NE of Terni (111501 inhabitants)
64 Km E of Perugia (166134 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
80 Km SW of Ancona (100861 inhabitants)
95 Km NW of Montesilvano (53738 inhabitants)
99 Km S of Fano (60888 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 1.9 		1989-01-01
02:32:18		 42.955 13.149 5 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 84449
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-01-01 02:32:18 ± 0.193
Latitude 42.9550 ± 0.0102
Longitude 13.1490 ± 0.0148
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 84449

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) 1658.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
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) 0.00065
Epicentral distance of station farthest from the epicenter (degree) 0.00988
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 84449
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:19:15

ML:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 84449
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
--.CP9.Z. 1989-01-01T02:32:58.19 10.0 undecidable manual SN 187 1.0989 1.7 0
--.AM8.Z. 1989-01-01T02:32:43.64 10.0 undecidable manual SG 28 0.6771 0.55 0.7
--.CP9.Z. 1989-01-01T02:32:42.32 10.0 undecidable manual PN 187 1.0989 1.91 0
--.MNS.Z. 1989-01-01T02:32:42.38 10.0 undecidable manual SG 211 0.666 -0.3 0.5
--.RSM.Z. 1989-01-01T02:32:40.97 10.0 positive manual PN 332 1.0878 0.64 1.5
--.ARV.Z. 1989-01-01T02:32:39.27 10.0 undecidable manual SG 344 0.555 -0.13 0.6
--.AZI.Z. 1989-01-01T02:32:38.71 10.0 undecidable manual PG 167 0.9879 0.25 1.1
--.MC8.Z. 1989-01-01T02:32:34.73 10.0 undecidable manual SG 30 0.3885 1.12 0.3
--.ASS.Z. 1989-01-01T02:32:33.00 10.0 undecidable manual SG 286 0.3774 -0.11 0.6
--.MNS.Z. 1989-01-01T02:32:31.71 10.0 positive manual PG 211 0.666 -0.73 1.8
--.ALP.Z. 1989-01-01T02:32:31.43 10.0 undecidable manual SG 119 0.3552 -0.7 0.6
--.AM8.Z. 1989-01-01T02:32:31.62 10.0 undecidable manual PG 28 0.6771 -1.05 0.5
--.ARV.Z. 1989-01-01T02:32:29.63 10.0 undecidable manual PG 344 0.555 -0.91 0.8
--.CM8.Z. 1989-01-01T02:32:28.40 10.0 undecidable manual SG 359 0.2331 0.22 0.9
--.MC8.Z. 1989-01-01T02:32:27.30 10.0 undecidable manual PG 30 0.3885 0.1 1.6
--.ASS.Z. 1989-01-01T02:32:26.67 10.0 positive manual PG 286 0.3774 -0.24 3
--.ALP.Z. 1989-01-01T02:32:25.86 10.0 undecidable manual PG 119 0.3552 -0.49 1.3
--.CM8.Z. 1989-01-01T02:32:23.73 10.0 undecidable manual PG 359 0.2331 -0.12 1.6
--.SS8.Z. 1989-01-01T02:32:21.47 10.0 undecidable manual SG 49 0.0666 -0.46 0.8
--.SS8.Z. 1989-01-01T02:32:20.51 10.0 undecidable manual PG 49 0.0666 0.05 1.6
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