Earthquake with magnitude of Md 2.4 on date 24-02-1989 and time 09:48:35 (Italy) in region 5 km S Monte Cavallo (MC)

A magnitude Md 2.4 earthquake occured in region: 5 km S Monte Cavallo (MC), on

  • 24-02-1989 08:48:35 (UTC)
  • 24-02-1989 09:48:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.95, 13 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
Monte Cavallo MC 5 145 145
Visso MC 8 1107 1252
Preci PG 9 724 1976
Sellano PG 9 1079 3055
Pieve Torina MC 12 1458 4513
Ussita MC 12 444 4957
Fiordimonte MC 13 202 5159
Serravalle di Chienti MC 14 1070 6229
Castelsantangelo sul Nera MC 14 281 6510
Pievebovigliana MC 15 866 7376
Muccia MC 16 915 8291
Cerreto di Spoleto PG 16 1075 9366
Fiastra MC 16 559 9925
Acquacanina MC 17 121 10046
Norcia PG 19 4957 15003
Bolognola MC 20 142 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km E of Foligno (57155 inhabitants)
52 Km NE of Terni (111501 inhabitants)
52 Km E of Perugia (166134 inhabitants)
66 Km W of Teramo (54892 inhabitants)
74 Km NW of L'Aquila (69753 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
100 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
Rev 1000 Md 2.4
ML-VAX 1.8
1989-02-24
08:48:35
42.95 13 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 87539
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-02-24 08:48:35 ± 0.207
Latitude 42.95 ± 0.01
Longitude 13.00 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 87539

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) 2114.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.00664
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 87539
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:22:08

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 87539
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 Takeoff_angle Residual Weight
--.MNS.Z. 1989-02-24T08:48:57.00 10.0 undecidable manual SG 202 0.0054 -0.22 0.4
--.ARV.Z. 1989-02-24T08:48:55.84 10.0 undecidable manual SG 356 0.0049 0.48 0.3
--.AM8.Z. 1989-02-24T08:48:52.10 10.0 undecidable manual PG 36 0.0066 1.44 0.1
--.MNS.Z. 1989-02-24T08:48:48.30 10.0 undecidable manual PG 202 0.0054 -0.12 1.1
--.ARV.Z. 1989-02-24T08:48:46.47 10.0 undecidable manual PG 356 0.0049 -0.6 0.7
--.ASS.Z. 1989-02-24T08:48:46.18 10.0 undecidable manual SG 294 0.0024 -0.31 0.4
--.ALP.Z. 1989-02-24T08:48:45.20 10.0 undecidable manual PG 111 0.004 -0.03 2.6
--.MC8.Z. 1989-02-24T08:48:45.20 10.0 undecidable manual PG 41 0.0041 -0.25 1.2
--.ASS.Z. 1989-02-24T08:48:42.65 10.0 undecidable manual PG 294 0.0024 0.7 0.6
--.CM8.Z. 1989-02-24T08:48:41.10 10.0 undecidable manual PG 23 0.0023 -0.74 1.2
--.SS8.Z. 1989-02-24T08:48:40.40 10.0 undecidable manual PG 71 0.0016 0.18 2.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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