Earthquake with magnitude of ML 3.3 on date 21-07-2018 and time 09:27:50 (UTC) in region Golfo di Policastro (Salerno, Potenza)

A magnitude ML 3.3 earthquake occured in region: Golfo di Policastro (Salerno, Potenza), on

  • 21-07-2018 09:27:50 (UTC)
  • 21-07-2018 11:27:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.8940, 15.6830 at 286 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
Tortora CS 8 6187 6187
Praia a Mare CS 8 6725 12912
San Nicola Arcella CS 11 1957 14869
Maratea PZ 12 5139 20008
Aieta CS 13 823 20831
Scalea CS 13 10913 31744
Santa Domenica Talao CS 17 1263 33007
Trecchina PZ 17 2316 35323
Papasidero CS 19 734 36057

Municipalities with at least 50000 inhabitants

An earthquake occurred to
83 Km NW of Cosenza (67546 inhabitants)
84 Km S of Potenza (67122 inhabitants)
99 Km SE of Battipaglia (50786 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

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and updated as more data become available. See http://shakemap.ingv.it for additional information. The black star indicates the epicenter. The triangles show the accelerometric and velocimetric stations used in the calculation, colored according to the recorded shaking.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of instrumental intensities. The intensity is derived through an empirical law that correlates the recorded values of actual ground shaking, e.g., acceleration and velocity, with the macroseismic intensity for Italian earthquakes, as reported in the Italian Macroseismic Database (DBMI15, https://doi.org/10.13127/cpti/cpti15.3).
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows the distribution of peak ground acceleration expressed as percent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap

This map shows the distribution of peak ground velocities expressed in cm/s.
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 3.3 2018-07-21
09:27:50
39.8943 15.6828 286 2019-04-24
14:50:49
Bollettino Sismico Italiano INGV 59059921
Reviewed
Rev100
ML 3.2 2018-07-21
09:27:50
39.8875 15.5907 286 2018-07-21
09:48:16
Sala Sismica INGV-Roma 58936021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-07-21 09:27:50 ± 0.25
Latitude 39.8943 ± 0.0153
Longitude 15.6828 ± 0.0363
Depth (km) 286 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 59059921

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3128
Semi-minor axis of confidence ellipse (meter) 385
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 100
Circular confidence region, given by single value of horizontal uncertainty (meter) 3130.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 59
Number of defining phases 59
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.14209
Epicentral distance of station farthest from the epicenter (degree) 2.62152
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 38
Magnitudes information

ML:3.3

Field Value
Value 3.3
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 59059921
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-03-18 00:43:21

ML:3.2

Field Value
Value 3.2
Uncertainty 0.3
Num. used stations 56
Type of magnitude ML
Reference to an origin 58936021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-07-21 09:48:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MTTG.HHE. 2018-07-21T09:29:08.96 0.6 undecidable manual S 180 209.8344 143 -0.83 23
IV.SOI.EHZ. 2018-07-21T09:29:07.89 0.6 undecidable manual S 171 204.5397 143 -1.21 20
IV.MPNC.HHE. 2018-07-21T09:29:07.21 0.6 undecidable manual S 188 195.9594 144 -0.8 25
IV.MILZ.HHN. 2018-07-21T09:29:06.65 0.6 undecidable manual S 192 184.1712 146 0.08 33
MN.CEL.HHZ. 2018-07-21T09:29:05.66 0.6 undecidable manual S 174 182.1843 146 -0.66 29
IV.PLAC.HHZ. 2018-07-21T09:29:04.96 0.6 undecidable manual S 158 172.9935 148 -0.28 34
IV.JOPP.HHN. 2018-07-21T09:29:01.05 0.6 undecidable manual S 173 143.8449 152 -1.06 29
MN.TIP.HHZ. 2018-07-21T09:29:00.40 0.6 undecidable manual S 130 121.4895 156 0.38 39
IV.SERS.HHZ. 2018-07-21T09:29:00.74 0.6 undecidable manual S 138 128.3715 155 0.1 41
IV.SPS2.HHZ. 2018-07-21T09:28:58.13 0.6 undecidable manual S 140 87.3459 162 0.72 38
GE.MATE.HHZ. 2018-07-21T09:28:58.99 0.6 undecidable manual S 46 120.3906 156 -0.93 32
IV.MIGL.HHN. 2018-07-21T09:28:58.40 0.6 undecidable manual S 39 101.6205 160 -0.01 44
IV.ORI.HHZ. 2018-07-21T09:28:57.25 0.6 undecidable manual S 75 67.4769 166 0.99 35
IV.CAR1.HHN. 2018-07-21T09:28:56.50 0.6 undecidable manual S 147 84.249 163 -0.72 38
IV.TDS.HHZ. 2018-07-21T09:28:56.99 0.6 undecidable manual S 115 61.5939 167 1.02 35
IV.MGR.HHE. 2018-07-21T09:28:55.06 0.6 undecidable manual S 338 29.1486 174 0.22 48
IV.SALB.HHN. 2018-07-21T09:28:55.84 0.6 undecidable manual S 92 56.499 168 0.1 47
IV.MMN.HHE. 2018-07-21T09:28:55.02 0.6 undecidable manual S 91 26.1516 175 0.25 48
IV.GRIS.HNE. 2018-07-21T09:28:54.74 0.6 undecidable manual S 140 22.3554 175 0.04 51
IV.CET2.HHZ. 2018-07-21T09:28:54.84 0.6 undecidable manual S 150 46.7199 170 -0.51 44
MN.CUC.HHZ. 2018-07-21T09:28:54.73 0.6 undecidable manual S 46 15.7731 177 0.13 51
IV.HLNI.HHN. 2018-07-21T09:28:43.12 0.3 undecidable manual P 194 290.9865 133 0.2 21
IV.PETRA.HHZ. 2018-07-21T09:28:41.53 0.6 undecidable manual P 211 265.734 136 0.86 15
IV.CSLB.HHZ. 2018-07-21T09:28:40.51 0.1 positive manual P 213 258.4413 136 0.47 37
IV.SCTE.HHE. 2018-07-21T09:28:38.20 0.1 undecidable manual P 84 237.4845 139 -0.09 48
IV.MUCR.HHZ. 2018-07-21T09:28:37.00 0.1 positive manual P 199 216.9162 142 0.35 52
IV.MTTG.HHE. 2018-07-21T09:28:36.14 0.1 undecidable manual P 180 209.8344 143 0.04 58
IV.NOV.HHZ. 2018-07-21T09:28:36.90 0.3 undecidable manual P 193 212.3319 142 0.6 37
IV.SOI.EHZ. 2018-07-21T09:28:35.34 0.1 undecidable manual P 171 204.5397 143 -0.37 56
IV.MILZ.HHN. 2018-07-21T09:28:34.17 0.1 undecidable manual P 192 184.1712 146 -0.07 67
IV.MPNC.HHE. 2018-07-21T09:28:34.61 0.3 undecidable manual P 188 195.9594 144 -0.47 43
IV.MSAG.HHZ. 2018-07-21T09:28:34.53 0.3 undecidable manual P 5 202.5417 143 -1.03 33
IV.IVPL.HHZ. 2018-07-21T09:28:34.82 0.3 undecidable manual P 200 178.8876 147 0.94 39
MN.CEL.HHZ. 2018-07-21T09:28:33.42 0.1 undecidable manual P 174 182.1843 146 -0.68 57
IV.PLAC.HHZ. 2018-07-21T09:28:33.37 0.1 undecidable manual P 158 172.9935 148 -0.11 70
IV.SERS.HHZ. 2018-07-21T09:28:31.30 0.1 negative manual P 138 128.3715 155 0.48 76
IV.NOCI.HHE. 2018-07-21T09:28:31.85 0.1 negative manual P 49 153.2355 151 -0.38 72
IV.LADO.EHN. 2018-07-21T09:28:31.18 0.1 negative manual P 121 129.87 155 0.28 79
IV.JOPP.HHN. 2018-07-21T09:28:31.27 0.1 undecidable manual P 173 143.8449 152 -0.4 74
IV.PIPA.HHZ. 2018-07-21T09:28:30.12 0.1 negative manual P 115 106.8153 159 0.36 81
MN.TIP.HHZ. 2018-07-21T09:28:30.96 0.1 negative manual P 130 121.4895 156 0.5 77
IV.AMUR.HHN. 2018-07-21T09:28:30.85 0.1 undecidable manual P 34 136.6632 154 -0.41 75
IV.SPS2.HHZ. 2018-07-21T09:28:29.92 0.3 undecidable manual P 140 87.3459 162 0.96 51
GE.MATE.HHZ. 2018-07-21T09:28:29.91 0.1 negative manual P 46 120.3906 156 -0.5 77
IV.MCEL.HHZ. 2018-07-21T09:28:29.69 0.1 undecidable manual P 12 48.8178 170 1.88 42
IV.ORI.HHZ. 2018-07-21T09:28:28.62 0.1 undecidable manual P 75 67.4769 166 0.33 88
IV.TDS.HHZ. 2018-07-21T09:28:28.89 0.1 negative manual P 115 61.5939 167 0.77 77
IV.CMPR.HHZ. 2018-07-21T09:28:28.12 0.3 undecidable manual P 326 56.9985 168 0.12 70
IV.CAR1.HHN. 2018-07-21T09:28:28.60 0.1 undecidable manual P 147 84.249 163 -0.24 87
IV.MIGL.HHN. 2018-07-21T09:28:28.96 0.1 undecidable manual P 39 101.6205 160 -0.57 77
IV.SLCN.HNZ. 2018-07-21T09:28:28.09 0.1 undecidable manual P 356 55.1004 169 0.13 94
IV.CET2.HHZ. 2018-07-21T09:28:27.61 0.1 negative manual P 150 46.7199 170 -0.16 95
MN.CUC.HHZ. 2018-07-21T09:28:27.07 0.1 negative manual P 46 15.7731 177 -0.27 98
IV.SALB.HHN. 2018-07-21T09:28:27.96 0.1 undecidable manual P 92 56.499 168 -0.03 96
IV.MGR.HHE. 2018-07-21T09:28:27.40 0.1 negative manual P 338 29.1486 174 -0.07 100
IV.MMN.HHE. 2018-07-21T09:28:27.37 0.3 undecidable manual P 91 26.1516 175 -0.06 75
IV.BULG.HHZ. 2018-07-21T09:28:27.76 0.1 negative manual P 308 33.0447 173 0.24 96
IV.MTSN.HHZ. 2018-07-21T09:28:27.35 0.1 undecidable manual P 8 41.625 171 -0.32 93
IV.GRIS.HNE. 2018-07-21T09:28:26.92 0.1 undecidable manual P 140 22.3554 175 -0.47 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.CUC.HHE. ML:2.8 0.000081782175 0.4992 AML other m 2018-07-21T09:28:55.34
MN.CUC.HHN. ML:2.6 0.00005360962500000001 0.704 AML other m 2018-07-21T09:28:55.88
IV.CET2.HHE. ML:3.8 0.0009966864 0.64 AML other m 2018-07-21T09:28:56.08
IV.CAR1.HHE. ML:3.8 0.0008190142499999999 0.9024 AML other m 2018-07-21T09:28:57.75
IV.CET2.HHN. ML:4.0 0.0012081075 0.3584 AML other m 2018-07-21T09:28:57.51
IV.CAR1.HNN. ML:3.8 0.00080019595 0.544 AML other m 2018-07-21T09:28:57.46
IV.CAR1.HHN. ML:3.7 0.0006703888999999999 0.4608 AML other m 2018-07-21T09:28:57.72
IV.TDS.HHE. ML:2.8 0.00009039131 0.5376 AML other m 2018-07-21T09:28:58.13
IV.SALB.HHN. ML:3.0 0.00013942850000000002 0.4352 AML other m 2018-07-21T09:28:58.26
IV.MIGL.HHE. ML:3.2 0.00020045394999999999 0.6208 AML other m 2018-07-21T09:28:59.09
IV.MIGL.HHN. ML:3.2 0.00019235360000000002 0.4992 AML other m 2018-07-21T09:28:58.88
IV.MCEL.HHN. ML:2.8 0.000075650525 0.7168 AML other m 2018-07-21T09:28:59.42
IV.CAR1.HNE. ML:3.7 0.0006410519999999999 0.3776 AML other m 2018-07-21T09:28:59.45
GE.MATE.HHE. ML:3.1 0.0001472439 0.4608 AML other m 2018-07-21T09:28:59.63
IV.SALB.HHE. ML:3.2 0.00023233679999999998 0.5056 AML other m 2018-07-21T09:28:59.16
GE.MATE.HHN. ML:3.0 0.00012014295 0.48 AML other m 2018-07-21T09:28:59.66
IV.SPS2.HHN. ML:3.5 0.00043204885 0.4992 AML other m 2018-07-21T09:29:00.57
IV.TDS.HHN. ML:2.7 0.0000719041 0.6016 AML other m 2018-07-21T09:29:00.62
IV.PIPA.HHN. ML:3.3 0.0002321038 0.1792 AML other m 2018-07-21T09:29:01.25
IV.ORI.HHN. ML:3.6 0.00047724845 0.3392 AML other m 2018-07-21T09:29:01.43
IV.BULG.HNN. ML:2.8 0.00008482471499999999 0.48 AML other m 2018-07-21T09:29:02.02
MN.TIP.HNE. ML:3.1 0.00014476521000000002 0.6208 AML other m 2018-07-21T09:29:02.32
MN.TIP.HHE. ML:3.2 0.00016916805000000002 0.6208 AML other m 2018-07-21T09:29:02.32
IV.SPS2.HHE. ML:3.1 0.00016443485000000002 0.416 AML other m 2018-07-21T09:29:02.25
IV.ORI.HHE. ML:3.4 0.00035604915000000004 0.3648 AML other m 2018-07-21T09:29:02.10
IV.JOPP.HHE. ML:3.6 0.00045335595000000007 0.2624 AML other m 2018-07-21T09:29:02.58
IV.JOPP.HHN. ML:3.6 0.00037640865 0.16 AML other m 2018-07-21T09:29:02.77
IV.SERS.HHN. ML:3.4 0.0003122962500000001 0.4032 AML other m 2018-07-21T09:29:02.77
IV.SERS.HNE. ML:3.4 0.000253645665 0.4032 AML other m 2018-07-21T09:29:02.98
IV.PIPA.HNE. ML:3.3 0.000253658 0.224 AML other m 2018-07-21T09:29:03.10
IV.PIPA.HHE. ML:3.3 0.00025069975 0.2176 AML other m 2018-07-21T09:29:02.99
IV.SERS.HNN. ML:3.4 0.0002550286 0.4992 AML other m 2018-07-21T09:29:03.83
MN.TIP.HHN. ML:3.0 0.00010812290999999999 0.4224 AML other m 2018-07-21T09:29:03.90
IV.SERS.HHE. ML:3.4 0.00028956995000000004 0.48 AML other m 2018-07-21T09:29:03.83
MN.TIP.HNN. ML:2.9 0.000088337035 0.4224 AML other m 2018-07-21T09:29:05.84
MN.CEL.HNN. ML:3.3 0.00016575029 0.48 AML other m 2018-07-21T09:29:06.97
MN.CEL.HHN. ML:3.4 0.00021005474000000002 0.48 AML other m 2018-07-21T09:29:06.97
IV.PLAC.HNE. ML:3.9 0.0007402085000000001 0.6208 AML other m 2018-07-21T09:29:06.85
IV.PLAC.HHN. ML:3.9 0.00074016085 0.6208 AML other m 2018-07-21T09:29:06.85
IV.PLAC.HHE. ML:3.8 0.0006654321 0.2432 AML other m 2018-07-21T09:29:07.17
IV.PLAC.HNN. ML:3.8 0.0006052196499999999 0.2624 AML other m 2018-07-21T09:29:07.17
IV.MILZ.HHE. ML:3.7 0.0004820563 0.4608 AML other m 2018-07-21T09:29:07.99
IV.MILZ.HHN. ML:3.6 0.00037599525 0.4416 AML other m 2018-07-21T09:29:08.16
IV.GMB.BHE. ML:4.0 0.0008466974 0.16 AML other m 2018-07-21T09:29:08.31
MN.CEL.HHE. ML:3.4 0.00020554135000000001 0.6208 AML other m 2018-07-21T09:29:08.33
MN.CEL.HNE. ML:3.2 0.00014014473 0.6016 AML other m 2018-07-21T09:29:08.64
IV.GMB.BHN. ML:4.0 0.00086296175 0.16 AML other m 2018-07-21T09:29:08.75
IV.MPNC.HHN. ML:3.4 0.00022677075 0.2432 AML other m 2018-07-21T09:29:08.84
IV.MPNC.HHE. ML:3.4 0.00022063575000000002 0.2176 AML other m 2018-07-21T09:29:10.39
IV.MTTG.HHN. ML:3.2 0.000127661 0.4608 AML other m 2018-07-21T09:29:12.49
IV.SOI.EHN. ML:3.2 0.0001291009 0.4992 AML other m 2018-07-21T09:29:13.14
IV.NOV.HHE. ML:3.0 0.00008669577000000001 0.4224 AML other m 2018-07-21T09:29:14.16
IV.SOI.EHE. ML:3.1 0.00009564333999999999 0.544 AML other m 2018-07-21T09:29:14.63
IV.MUCR.HHE. ML:2.8 0.00004399772 0.6016 AML other m 2018-07-21T09:29:20.20
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
Waveforms Seismic signals in miniseed + resp format Download