Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.5 on date 20-05-1992 and time 18:28:30 (Italy) in region 1 km SW Badia Tedalda (AR)

A magnitude Md 2.5 earthquake occured in region: 1 km SW Badia Tedalda (AR), on

  • 20-05-1992 16:28:30 (UTC)
  • 20-05-1992 18:28:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.7000, 12.1750 at 8 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
Badia Tedalda AR 1 1087 1087
Sestino AR 10 1355 2442
Casteldelci RN 10 407 2849
Borgo Pace PU 11 606 3455
Pieve Santo Stefano AR 11 3183 6638
Mercatello sul Metauro PU 14 1378 8016
Sansepolcro AR 15 15884 23900
Pennabilli RN 15 2869 26769
Carpegna PU 16 1674 28443
Caprese Michelangelo AR 16 1426 29869
Belforte all'Isauro PU 16 769 30638
San Giustino PG 17 11297 41935
Verghereto FC 17 1907 43842
Frontino PU 18 293 44135
Sant'Agata Feltria RN 19 2151 46286
Chiusi della Verna AR 19 2023 48309
Sant'Angelo in Vado PU 20 4133 52442
Piandimeleto PU 20 2167 54609
Anghiari AR 20 5638 60247

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NE of Arezzo (99543 inhabitants)
49 Km S of Cesena (96758 inhabitants)
51 Km SW of Rimini (147750 inhabitants)
59 Km S of Forlì (117913 inhabitants)
64 Km W of Pesaro (94582 inhabitants)
68 Km N of Perugia (166134 inhabitants)
69 Km SE of Faenza (58541 inhabitants)
70 Km W of Fano (60888 inhabitants)
74 Km E of Firenze (382808 inhabitants)
80 Km S of Ravenna (159116 inhabitants)
80 Km NE of Siena (53903 inhabitants)
80 Km E of Scandicci (50609 inhabitants)
82 Km SE of Imola (69797 inhabitants)
89 Km E of Prato (191150 inhabitants)
93 Km NW of Foligno (57155 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 2.0 		1992-05-20
16:28:30		 43.7 12.175 8 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 164929
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1992-05-20 16:28:30 ± 0.148
Latitude 43.7000 ± 0.0101
Longitude 12.1750 ± 0.0087
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 164929

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) 1324.0
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 17
Number of defining phases 17
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) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.01069
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 164929
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:34:15

ML:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 5
Type of magnitude ML
Reference to an origin 164929
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
--.BDI.Z. 1992-05-20T16:29:09.96 10.0 undecidable manual SN 288 1.1877 0.41 0.3
--.PII.Z. 1992-05-20T16:29:08.50 10.0 undecidable manual SN 271 1.1877 -1.05 0
--.ASS.Z. 1992-05-20T16:28:56.31 10.0 undecidable manual SG 151 0.7215 0.56 0.1
--.MME.Z. 1992-05-20T16:28:53.90 10.0 undecidable manual PN 295 1.1655 0.53 0.5
--.PII.Z. 1992-05-20T16:28:53.50 10.0 undecidable manual PN 271 1.1877 0.63 0.3
--.BDI.Z. 1992-05-20T16:28:52.99 10.0 undecidable manual PN 288 1.1877 0.11 1.1
--.ARV.Z. 1992-05-20T16:28:51.55 10.0 undecidable manual SG 109 0.5883 0.11 0.6
--.ASS.Z. 1992-05-20T16:28:44.11 10.0 undecidable manual PG 151 0.7215 -0.79 0.3
--.PGD.Z. 1992-05-20T16:28:44.42 10.0 undecidable manual SG 298 0.3663 0.07 0.7
--.SFI.Z. 1992-05-20T16:28:42.10 10.0 undecidable manual SG 310 0.3108 -0.28 0.4
--.ARV.Z. 1992-05-20T16:28:42.40 10.0 undecidable manual PG 109 0.5883 -0.38 1.2
--.RSM.Z. 1992-05-20T16:28:42.58 10.0 undecidable manual SG 40 0.2997 0.52 0.3
--.PGD.Z. 1992-05-20T16:28:38.15 10.0 negative manual PG 298 0.3663 -0.17 2.9
--.RSM.Z. 1992-05-20T16:28:37.90 10.0 negative manual PG 40 0.2997 0.09 3.3
--.CRE.Z. 1992-05-20T16:28:37.69 10.0 undecidable manual SG 243 0.1776 0.14 0.6
--.SFI.Z. 1992-05-20T16:28:37.30 10.0 negative manual PG 310 0.3108 -0.15 3
--.CRE.Z. 1992-05-20T16:28:34.63 10.0 undecidable manual PG 243 0.1776 0.23 1.3
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