Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.4 on date 24-04-1989 and time 18:49:54 (Italy) in region 5 km W Caldarola (MC)

A magnitude Md 2.4 earthquake occured in region: 5 km W Caldarola (MC), on

  • 24-04-1989 16:49:54 (UTC)
  • 24-04-1989 18:49:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1350, 13.1700 at 16 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
Caldarola MC 5 1823 1823
Serrapetrona MC 5 966 2789
Belforte del Chienti MC 7 1886 4675
Cessapalombo MC 8 512 5187
Camporotondo di Fiastrone MC 8 563 5750
Camerino MC 8 6974 12724
Pievebovigliana MC 11 866 13590
San Severino Marche MC 11 12726 26316
Fiastra MC 11 559 26875
Acquacanina MC 12 121 26996
Muccia MC 12 915 27911
San Ginesio MC 12 3498 31409
Castelraimondo MC 12 4587 35996
Tolentino MC 13 20069 56065
Fiordimonte MC 13 202 56267
Pieve Torina MC 14 1458 57725
Gagliole MC 14 620 58345
Sarnano MC 15 3264 61609
Gualdo MC 16 815 62424
Colmurano MC 16 1263 63687
Pioraco MC 16 1134 64821
Ripe San Ginesio MC 16 852 65673
Bolognola MC 16 142 65815
Sefro MC 18 422 66237
Urbisaglia MC 18 2628 68865
Matelica MC 19 9981 78846
Sant'Angelo in Pontano MC 19 1436 80282
Serravalle di Chienti MC 19 1070 81352

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Foligno (57155 inhabitants)
61 Km SW of Ancona (100861 inhabitants)
63 Km E of Perugia (166134 inhabitants)
69 Km NW of Teramo (54892 inhabitants)
77 Km NE of Terni (111501 inhabitants)
80 Km S of Fano (60888 inhabitants)
89 Km S of Pesaro (94582 inhabitants)
89 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 2.4
ML-VAX 2.5 		1989-04-24
16:49:54		 43.135 13.17 16 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 90469
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-04-24 16:49:54 ± 0.199
Latitude 43.1350 ± 0.0075
Longitude 13.1700 ± 0.0126
Depth (km) 16 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 90469

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) 1323.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
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) 0.00049
Epicentral distance of station farthest from the epicenter (degree) 0.00745
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 2
Type of magnitude Md
Reference to an origin 90469
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:24:52

ML:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 90469
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
--.MNS.Z. 1989-04-24T16:50:23.60 10.0 undecidable manual SG 205 0.8214 0.53 0.2
--.AM8.Z. 1989-04-24T16:50:13.30 10.0 undecidable manual SG 36 0.5106 0.17 0.7
--.ALP.Z. 1989-04-24T16:50:11.00 10.0 undecidable manual SG 140 0.444 -0.2 0.7
--.MNS.Z. 1989-04-24T16:50:10.40 10.0 undecidable manual PG 205 0.8214 -0.57 0.4
--.ARV.Z. 1989-04-24T16:50:09.79 10.0 undecidable manual SG 335 0.3996 0.43 0.3
--.ASS.Z. 1989-04-24T16:50:08.92 10.0 undecidable manual SG 259 0.3774 0.03 0.6
--.MC8.Z. 1989-04-24T16:50:05.30 10.0 undecidable manual SG 48 0.2331 0.8 0.1
--.AM8.Z. 1989-04-24T16:50:04.60 10.0 undecidable manual PG 36 0.5106 -0.62 0.9
--.ASS.Z. 1989-04-24T16:50:03.20 10.0 undecidable manual PG 259 0.3774 0.24 1.3
--.ALP.Z. 1989-04-24T16:50:03.80 10.0 undecidable manual PG 140 0.444 -0.31 2.1
--.ARV.Z. 1989-04-24T16:50:02.99 10.0 undecidable manual PG 335 0.3996 -0.05 1.5
--.SS8.Z. 1989-04-24T16:50:01.50 10.0 undecidable manual SG 160 0.1332 -0.09 0.9
--.MC8.Z. 1989-04-24T16:50:00.60 10.0 undecidable manual PG 48 0.2331 0.36 1
--.CM8.Z. 1989-04-24T16:49:59.20 10.0 undecidable manual SG 342 0.0555 -0.98 0.1
--.SS8.Z. 1989-04-24T16:49:58.90 10.0 undecidable manual PG 160 0.1332 0.34 2.2
--.CM8.Z. 1989-04-24T16:49:57.80 10.0 undecidable manual PG 342 0.0555 0.05 3
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