Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 4.2 on date 24-05-1987 and time 12:23:25 (Italy) in region 4 km N San Zeno di Montagna (VR)

A magnitude Md 4.2 earthquake occured in region: 4 km N San Zeno di Montagna (VR), on

  • 24-05-1987 10:23:25 (UTC)
  • 24-05-1987 12:23:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.6750, 10.7210 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
San Zeno di Montagna VR 4 1355 1355
Gargnano BS 5 2934 4289
Brenzone sul Garda VR 5 2474 6763
Tignale BS 7 1256 8019
Torri del Benaco VR 8 3023 11042
Caprino Veronese VR 9 8371 19413
Toscolano-Maderno BS 10 7990 27403
Costermano sul Garda VR 10 3738 31141
Ferrara di Monte Baldo VR 10 226 31367
Tremosine sul Garda BS 11 2100 33467
Garda VR 11 4092 37559
Malcesine VR 12 3736 41295
Dolcè VR 13 2625 43920
Rivoli Veronese VR 14 2180 46100
Brentino Belluno VR 14 1395 47495
Valvestino BS 14 184 47679
Gardone Riviera BS 14 2660 50339
Bardolino VR 14 7049 57388
Affi VR 14 2336 59724
Magasa BS 14 142 59866
Cavaion Veronese VR 16 5849 65715
Capovalle BS 16 369 66084
Salò BS 16 10693 76777
San Felice del Benaco BS 16 3391 80168
Limone sul Garda BS 17 1181 81349
Vobarno BS 18 8103 89452
Roè Volciano BS 18 4574 94026
Avio TN 19 4133 98159
Sant'Anna d'Alfaedo VR 19 2553 100712
Lazise VR 19 6901 107613
Sant'Ambrogio di Valpolicella VR 19 11737 119350
Manerba del Garda BS 19 5287 124637
Fumane VR 19 4119 128756
Bondone TN 20 670 129426
Puegnago sul Garda BS 20 3410 132836

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NW of Verona (258765 inhabitants)
42 Km E of Brescia (196480 inhabitants)
54 Km SW of Trento (117317 inhabitants)
66 Km W of Vicenza (112953 inhabitants)
81 Km NE of Cremona (71901 inhabitants)
82 Km E of Bergamo (119381 inhabitants)
95 Km W of Padova (210401 inhabitants)
100 Km N of Carpi (70699 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		Md 4.2 1987-05-24
10:23:25		 45.675 10.721 5 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 47649
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-05-24 10:23:25 ± 0.079
Latitude 45.6750 ± 0.0085
Longitude 10.7210 ± 0.0102
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 47649

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) 1235.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 22
Number of associated phases, regardless of their use for origin computation 116
Number of defining phases 116
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00130
Epicentral distance of station farthest from the epicenter (degree) 0.08661
Number of stations at which the event was observed 103
Number of stations from which data was used for origin computation 103
Magnitude information

Md:4.2

Field Value
Value 4.2
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 47649
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:46:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.GRR.Z. 1987-05-24T10:26:55.10 10.0 undecidable manual SN 293 8.325 -0.78 0.3
--.FLN.Z. 1987-05-24T10:26:54.30 10.0 undecidable manual SN 296 8.1807 1.59 0
--.ULC.Z. 1987-05-24T10:26:29.00 10.0 undecidable manual SN 118 7.1706 0.51 0.4
--.TTG.Z. 1987-05-24T10:26:22.00 10.0 undecidable manual SN 114 6.9264 -0.69 0.3
--.BDV.Z. 1987-05-24T10:26:16.50 10.0 undecidable manual SN 117 6.7266 -1.57 0.1
--.LSF.Z. 1987-05-24T10:26:10.70 10.0 undecidable manual SN 278 6.3936 0.6 0.3
--.CAF.Z. 1987-05-24T10:26:03.20 10.0 undecidable manual SN 265 6.1161 -0.25 0.4
--.TCF.Z. 1987-05-24T10:26:00.20 10.0 undecidable manual SN 278 5.9274 1.23 0.1
--.DOU.Z. 1987-05-24T10:25:59.50 10.0 undecidable manual SN 319 6.0162 -1.62 0.1
--.BGF.Z. 1987-05-24T10:25:49.89 10.0 undecidable manual SN 281 5.5167 0.8 0.3
--.VAY.Z. 1987-05-24T10:25:45.60 10.0 undecidable manual PN 112 9.6126 0.73 0.6
--.LOR.Z. 1987-05-24T10:25:36.60 10.0 undecidable manual SN 290 4.9728 0.38 0.4
--.LBF.Z. 1987-05-24T10:25:34.10 10.0 undecidable manual SN 288 4.8285 1.45 0.1
--.OHR.Z. 1987-05-24T10:25:31.70 10.0 undecidable manual PN 118 8.6025 0.6 1.5
--.SKO.Z. 1987-05-24T10:25:30.50 10.0 undecidable manual PN 111 8.5581 0.17 0.9
--.FLN.Z. 1987-05-24T10:25:26.00 10.0 undecidable manual PN 296 8.1807 0.69 0.6
--.GRR.Z. 1987-05-24T10:25:26.30 10.0 undecidable manual PN 293 8.325 -0.84 0.6
--.TDS.Z. 1987-05-24T10:25:14.00 10.0 undecidable manual PN 143 7.2816 1.13 0.4
--.SPC.Z. 1987-05-24T10:25:14.00 10.0 undecidable manual PN 57 7.326 0.63 0.7
--.ULC.Z. 1987-05-24T10:25:11.00 10.0 undecidable manual PN 118 7.1706 -0.32 0.9
--.LFF.Z. 1987-05-24T10:25:09.40 10.0 undecidable manual PN 267 7.0485 -0.16 1
--.TTG.Z. 1987-05-24T10:25:08.20 10.0 undecidable manual PN 114 6.9264 0.22 1
--.ORI.Z. 1987-05-24T10:25:08.50 10.0 undecidable manual PN 141 7.0041 -0.52 0.8
--.LPO.Z. 1987-05-24T10:25:06.30 10.0 undecidable manual PN 264 6.771 0.41 0.9
--.BDV.Z. 1987-05-24T10:25:05.50 10.0 undecidable manual PN 117 6.7266 0.19 1.1
--.MGR.Z. 1987-05-24T10:25:02.50 10.0 undecidable manual PN 145 6.5601 -0.44 0.9
--.RJF.Z. 1987-05-24T10:25:02.10 10.0 undecidable manual PN 269 6.438 0.73 0.7
--.LSF.Z. 1987-05-24T10:25:00.80 10.0 undecidable manual PN 278 6.3936 0.09 1.1
--.DOU.Z. 1987-05-24T10:24:57.10 10.0 undecidable manual PN 319 6.0162 1.58 0.1
--.SGO.Z. 1987-05-24T10:24:56.50 10.0 undecidable manual PN 145 6.105 -0.14 1.1
--.CAF.Z. 1987-05-24T10:24:56.70 10.0 undecidable manual PN 265 6.1161 -0.17 1.1
--.TCF.Z. 1987-05-24T10:24:54.20 10.0 undecidable manual PN 278 5.9274 -0.08 1.2
--.CLL.Z. 1987-05-24T10:24:52.90 10.0 undecidable manual PN 14 5.8275 0.11 2.3
--.SRO.Z. 1987-05-24T10:24:50.00 10.0 undecidable manual PN 64 5.6055 0.11 1.2
--.MAF.Z. 1987-05-24T10:24:50.40 10.0 undecidable manual PN 278 5.6832 -0.46 1.1
--.BGF.Z. 1987-05-24T10:24:48.20 10.0 undecidable manual PN 281 5.5167 -0.38 1.1
--.AVF.Z. 1987-05-24T10:24:44.20 10.0 undecidable manual PN 284 5.2059 -0.1 1.3
--.SSF.Z. 1987-05-24T10:24:44.00 10.0 undecidable manual PN 288 5.1615 0.38 1.1
--.MOX.Z. 1987-05-24T10:24:41.00 10.0 undecidable manual PN 6 4.995 -0.43 1.2
--.LOR.Z. 1987-05-24T10:24:41.30 10.0 undecidable manual PN 290 4.9728 0.16 1.2
--.PRU.Z. 1987-05-24T10:24:41.20 10.0 undecidable manual PN 29 5.0061 -0.39 1.2
--.DUI.Z. 1987-05-24T10:24:39.50 10.0 undecidable manual PN 144 4.8285 0.32 1.2
--.LBF.Z. 1987-05-24T10:24:39.20 10.0 undecidable manual PN 288 4.8285 0.11 1.3
--.TNS.Z. 1987-05-24T10:24:39.50 10.0 undecidable manual PN 342 4.7841 0.96 0.6
--.SMF.Z. 1987-05-24T10:24:39.20 10.0 undecidable manual PN 283 4.8507 -0.24 1.3
--.VKA.Z. 1987-05-24T10:24:37.20 10.0 negative manual PN 53 4.5954 1.15 0.9
--.SDI.Z. 1987-05-24T10:24:35.00 10.0 undecidable manual PN 149 4.5399 -0.2 1.3
--.SOP.Z. 1987-05-24T10:24:34.30 10.0 undecidable manual PN 61 4.4622 0.1 1.3
--.CP9.Z. 1987-05-24T10:24:31.00 10.0 undecidable manual PN 156 4.1292 1.45 0.4
--.VIT.Z. 1987-05-24T10:24:30.00 10.0 undecidable manual PN 309 4.0959 0.84 0.8
--.RDP.Z. 1987-05-24T10:24:29.00 10.0 undecidable manual PN 158 4.1625 -1.02 0.6
--.GRF.Z. 1987-05-24T10:24:27.10 10.0 undecidable manual PN 4 4.0182 -0.95 1.7
--.GWF.Z. 1987-05-24T10:24:27.50 10.0 undecidable manual PN 328 3.8961 1.07 0.5
--.AQU.Z. 1987-05-24T10:24:27.00 10.0 undecidable manual PN 148 3.8295 1.56 0.3
--.KHC.Z. 1987-05-24T10:24:27.50 10.0 undecidable manual PN 28 3.9516 0.42 2.4
--.LRG.Z. 1987-05-24T10:24:24.40 10.0 undecidable manual PN 235 3.8073 -0.73 1
--.LMR.Z. 1987-05-24T10:24:23.70 10.0 undecidable manual PN 233 3.7962 -1.29 0.4
--.CDF.Z. 1987-05-24T10:24:22.80 10.0 undecidable manual PN 320 3.5964 0.59 1
--.MNS.Z. 1987-05-24T10:24:21.70 10.0 undecidable manual PN 156 3.5631 -0.16 1.4
--.FRF.Z. 1987-05-24T10:24:21.20 10.0 undecidable manual PN 235 3.5742 -0.79 0.9
--.BUH.Z. 1987-05-24T10:24:21.00 10.0 undecidable manual PN 331 3.4299 0.98 0.6
--.BSF.Z. 1987-05-24T10:24:20.50 10.0 undecidable manual PN 309 3.441 0.44 1.2
--.CVF.Z. 1987-05-24T10:24:18.40 10.0 undecidable manual PN 203 3.3744 -0.72 0.9
--.STU.Z. 1987-05-24T10:24:17.80 10.0 negative manual PN 341 3.2523 0.25 2.6
--.VBY.Z. 1987-05-24T10:24:16.70 10.0 undecidable manual PN 91 3.1746 0.34 1.3
--.SBF.Z. 1987-05-24T10:24:13.10 10.0 undecidable manual PN 233 2.9526 -0.17 1.4
--.FEL.Z. 1987-05-24T10:24:12.80 10.0 undecidable manual PN 320 2.8638 0.61 1
--.ASS.Z. 1987-05-24T10:24:12.70 10.0 undecidable manual PN 151 2.9526 -0.6 1.1
--.BBS.Z. 1987-05-24T10:24:12.50 10.0 undecidable manual PN 310 2.8305 0.77 0.8
--.BNI.Z. 1987-05-24T10:24:11.50 10.0 undecidable manual PN 258 2.8971 -1.13 0.6
--.LPG.Z. 1987-05-24T10:24:10.10 10.0 undecidable manual PN 267 2.775 -0.83 0.9
--.LJU.Z. 1987-05-24T10:24:10.70 10.0 undecidable manual PN 80 2.664 1.23 0.5
--.ARV.Z. 1987-05-24T10:24:09.50 10.0 undecidable manual PN 143 2.6862 -0.18 2.8
--.SLE.Z. 1987-05-24T10:24:09.20 10.0 undecidable manual PN 324 2.5752 0.93 0.7
--.MI5.Z. 1987-05-24T10:24:08.30 10.0 undecidable manual SN 152 1.1988 1.71 0.1
--.FUR.Z. 1987-05-24T10:24:08.50 10.0 positive manual PN 8 2.5086 1.19 0.9
--.CEY.Z. 1987-05-24T10:24:08.40 10.0 undecidable manual PN 87 2.5752 0.14 2.9
--.VOY.Z. 1987-05-24T10:24:03.20 10.0 undecidable manual PN 79 2.2311 -0.25 1.4
--.CKI.Z. 1987-05-24T10:24:02.40 10.0 undecidable manual PN 234 2.1312 0.38 2.7
--.DRE.Z. 1987-05-24T10:24:01.20 10.0 undecidable manual PN 75 2.0868 -0.27 1.4
--.TRI.Z. 1987-05-24T10:24:01.00 10.0 undecidable manual PN 87 2.1201 -0.92 0.8
--.RBL.Z. 1987-05-24T10:24:01.70 10.0 undecidable manual PN 67 2.109 -0.11 1.5
--.FIR.Z. 1987-05-24T10:24:00.00 10.0 undecidable manual PN 168 1.9314 0.65 1.2
--.PGD.Z. 1987-05-24T10:24:00.00 10.0 undecidable manual PN 157 1.9314 0.7 1.1
--.PII.Z. 1987-05-24T10:23:59.00 10.0 undecidable manual PN 184 1.9536 -0.63 1
--.BAD.Z. 1987-05-24T10:23:58.00 10.0 undecidable manual PN 71 1.8315 -0.01 1.5
--.GEN.Z. 1987-05-24T10:23:58.10 10.0 undecidable manual PN 225 1.7649 0.96 0.8
--.ORX.Z. 1987-05-24T10:23:57.10 10.0 undecidable manual PN 269 1.9092 -1.92 0.1
--.ORO.Z. 1987-05-24T10:23:57.00 10.0 undecidable manual PN 269 1.9092 -2.02 0.1
--.ZOU.Z. 1987-05-24T10:23:57.90 10.0 undecidable manual PN 59 1.7871 0.55 1.1
--.BUA.Z. 1987-05-24T10:23:57.00 10.0 undecidable manual PN 70 1.7538 0.15 1.4
--.BOO.Z. 1987-05-24T10:23:56.90 10.0 undecidable manual PN 67 1.7649 -0.19 1.4
--.LLS.Z. 1987-05-24T10:23:56.00 10.0 undecidable manual PN 315 1.665 0.39 1.2
--.UDI.Z. 1987-05-24T10:23:56.70 10.0 undecidable manual PN 76 1.7871 -0.67 1.1
--.FVI.Z. 1987-05-24T10:23:56.50 10.0 undecidable manual PN 56 1.6872 0.46 1.2
--.TAL.Z. 1987-05-24T10:23:55.40 10.0 undecidable manual PN 80 1.6761 -0.38 1.3
--.BDI.Z. 1987-05-24T10:23:55.50 10.0 undecidable manual PN 183 1.6095 0.59 2.4
--.MME.Z. 1987-05-24T10:23:53.50 10.0 negative manual PN 180 1.4763 0.42 2.7
--.RCL.Z. 1987-05-24T10:23:52.50 10.0 undecidable manual PN 69 1.4208 0.14 1.4
--.VAI.Z. 1987-05-24T10:23:51.50 10.0 undecidable manual PN 278 1.3653 -0.09 2.9
--.TMA.Z. 1987-05-24T10:23:50.30 10.0 undecidable manual PN 289 1.3431 -1.05 0.7
--.BVT.Z. 1987-05-24T10:23:50.80 10.0 undecidable manual PN 208 1.3542 -0.62 1.1
--.BOB.Z. 1987-05-24T10:23:50.50 10.0 undecidable manual PN 224 1.2654 0.24 1.4
--.MI5.Z. 1987-05-24T10:23:49.10 10.0 undecidable manual PN 152 1.1988 -0.3 1.3
--.ERT.Z. 1987-05-24T10:23:49.70 10.0 undecidable manual PN 61 1.2987 -0.86 0.9
--.CAE.Z. 1987-05-24T10:23:48.60 10.0 undecidable manual PN 73 1.2321 -1.17 0.6
--.VEA.Z. 1987-05-24T10:23:47.90 10.0 undecidable manual PN 224 1.0989 0 1.5
--.VDL.Z. 1987-05-24T10:23:47.50 10.0 undecidable manual PN 313 1.1766 -1.54 0.3
--.CV4.Z. 1987-05-24T10:23:42.60 10.0 undecidable manual PG 174 0.8436 -0.64 1
--.CAV.Z. 1987-05-24T10:23:40.70 10.0 undecidable manual PG 39 0.7992 -1.77 0.2
--.CTI.Z. 1987-05-24T10:23:40.00 10.0 undecidable manual PG 59 0.7326 -1.4 0.4
--.MDI.Z. 1987-05-24T10:23:39.00 10.0 undecidable manual PG 278 0.7104 -1.75 0.4
--.PAG.Z. 1987-05-24T10:23:35.30 10.0 undecidable manual PG 25 0.5106 -1.78 0.2
--.DDS.Z. 1987-05-24T10:23:33.10 10.0 negative manual PG 57 0.3774 -1.43 0.8
--.RNI.Z. 1987-05-24T10:23:31.50 10.0 negative manual PG 350 0.3108 -1.39 1
--.SAL.Z. 1987-05-24T10:23:29.00 10.0 undecidable manual PG 243 0.1443 -0.43 1.3
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download