Earthquake with magnitude of Md 2.1 on date 27-01-1990 and time 01:04:02 (Italy) in region 2 km SE Preci (PG)

A magnitude Md 2.1 earthquake occured in region: 2 km SE Preci (PG), on

  • 27-01-1990 00:04:02 (UTC)
  • 27-01-1990 01:04:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8610, 13.0560 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Preci PG 3 724 724
Norcia PG 8 4957 5681
Visso MC 8 1107 6788
Castelsantangelo sul Nera MC 9 281 7069
Sellano PG 11 1079 8148
Ussita MC 12 444 8592
Cerreto di Spoleto PG 12 1075 9667
Monte Cavallo MC 16 145 9812
Cascia PG 16 3217 13029
Vallo di Nera PG 19 364 13393
Poggiodomo PG 19 117 13510
Fiordimonte MC 20 202 13712

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
58 Km W of Teramo (54892 inhabitants)
61 Km E of Perugia (166134 inhabitants)
63 Km NW of L'Aquila (69753 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
92 Km SW of Ancona (100861 inhabitants)
97 Km W of Montesilvano (53738 inhabitants)
99 Km N of Guidonia Montecelio (88673 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 2.1
ML-VAX 1.6
1990-01-27
00:04:02
42.861 13.056 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 108639
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1990-01-27 00:04:02 ± 0.138
Latitude 42.8610 ± 0.0075
Longitude 13.0560 ± 0.0114
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 108639

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) 1250.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 160
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.00130
Epicentral distance of station farthest from the epicenter (degree) 0.00575
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 108639
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:41:06

ML:1.6

Field Value
Value 1.6
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 108639
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
--.ARV.Z. 1990-01-27T00:04:25.11 10.0 undecidable manual SG 352 0.6327 0.46 0.2
--.MNS.Z. 1990-01-27T00:04:21.29 10.0 undecidable manual SG 210 0.5439 -0.37 0.4
--.ARV.Z. 1990-01-27T00:04:15.39 10.0 undecidable manual PG 352 0.6327 0.28 1
--.ASS.Z. 1990-01-27T00:04:15.53 10.0 undecidable manual SG 304 0.3552 0.04 0.8
--.CIO.Z. 1990-01-27T00:04:14.46 10.0 undecidable manual SG 10 0.333 -0.45 0.7
--.MNS.Z. 1990-01-27T00:04:13.40 10.0 undecidable manual PG 210 0.5439 0.01 1.6
--.ASS.Z. 1990-01-27T00:04:10.00 10.0 undecidable manual PG 304 0.3552 0.18 1.7
--.CIO.Z. 1990-01-27T00:04:08.82 10.0 undecidable manual PG 10 0.333 -0.67 1.1
--.RM8.Z. 1990-01-27T00:04:08.88 10.0 undecidable manual SG 50 0.1443 0.21 0.9
--.RM8.Z. 1990-01-27T00:04:06.10 10.0 undecidable manual PG 50 0.1443 0.21 1.5
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download