Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.8 on date 22-07-2021 and time 23:41:08 (UTC) in region Tirreno Meridionale (MARE)

A magnitude ML 2.8 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 22-07-2021 23:41:08 (UTC)
  • 23-07-2021 01:41:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.5140, 15.4770 at 276 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
71 Km W of Cosenza (67546 inhabitants)
94 Km NW of Lamezia Terme (70714 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 		ML 2.8 2021-07-22
23:41:08		 39.5142 15.4772 276 2021-12-29
11:12:51		 Bollettino Sismico Italiano INGV 97494151
Reviewed
Rev100 		ML 2.8 2021-07-22
23:41:09		 39.5107 15.395 273 2021-07-23
00:02:44		 Sala Sismica INGV-Roma 93086651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-22 23:41:08 ± 0.23
Latitude 39.5142 ± 0.0108
Longitude 15.4772 ± 0.0268
Depth (km) 276 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 97494151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2144
Semi-minor axis of confidence ellipse (meter) 881
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 98
Circular confidence region, given by single value of horizontal uncertainty (meter) 2140.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 76
Number of defining phases 76
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.36692
Epicentral distance of station farthest from the epicenter (degree) 2.82567
Number of stations at which the event was observed 61
Number of stations from which data was used for origin computation 61
Magnitudes information

ML:2.8

Field Value
Value 2.8
Uncertainty 0.2
Num. used stations 47
Type of magnitude ML
Reference to an origin 97494151
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-16 16:11:40

ML:2.8

Field Value
Value 2.8
Uncertainty 0.2
Num. used stations 47
Type of magnitude ML
Reference to an origin 93086651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-23 00:02:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PLAC.HHZ. 2021-07-22T23:42:18.80 0.6 undecidable manual S 145 1.2995 151 -0.07 43
IV.GRI.EHZ. 2021-07-22T23:42:17.50 0.6 undecidable manual S 133 1.0063 157 1.69 23
IV.LADO.EHZ. 2021-07-22T23:42:17.70 0.6 undecidable manual S 101 1.1826 154 0.13 43
IV.SELL.HHZ. 2021-07-22T23:42:16.40 0.6 undecidable manual S 120 1.0369 157 0.3 43
MN.TIP.HHZ. 2021-07-22T23:42:16.00 0.6 undecidable manual S 108 1.0450 156 -0.18 45
IV.SERS.HHZ. 2021-07-22T23:42:16.40 0.6 undecidable manual S 117 1.0522 156 0.15 45
IV.JOPP.HHZ. 2021-07-22T23:42:15.10 0.6 undecidable manual S 161 0.9605 158 -0.3 44
IV.CELI.HHZ. 2021-07-22T23:42:15.90 0.6 undecidable manual S 98 0.8040 161 1.8 22
IV.TDS.HHZ. 2021-07-22T23:42:13.90 0.6 undecidable manual S 77 0.6790 164 0.68 42
IV.GIZZ.HHZ. 2021-07-22T23:42:13.20 0.6 undecidable manual S 133 0.7779 162 -0.7 41
IV.SPS2.HHZ. 2021-07-22T23:42:13.30 0.6 undecidable manual S 108 0.7015 164 -0.07 49
MN.CUC.HHZ. 2021-07-22T23:42:12.20 0.6 undecidable manual S 28 0.5450 167 -0.22 49
IV.CAR1.HHZ. 2021-07-22T23:42:12.10 0.3 undecidable manual S 114 0.6241 165 -0.77 62
IV.CET2.HHZ. 2021-07-22T23:42:11.20 0.6 undecidable manual S 88 0.3687 171 -0.43 49
IV.GRIS.EHZ. 2021-07-22T23:42:11.30 0.6 undecidable manual S 52 0.3669 171 -0.34 50
IV.HPAC.HHZ. 2021-07-22T23:42:02.31 0.3 undecidable manual P 187 2.8257 130 -0.51 19
IV.HAVL.HHZ. 2021-07-22T23:41:59.12 0.3 undecidable manual P 186 2.5685 132 -1.03 18
IV.HVZN.HHZ. 2021-07-22T23:41:58.69 0.6 undecidable manual P 195 2.4093 134 0.13 20
IV.SSY.HHZ. 2021-07-22T23:41:57.29 0.3 undecidable manual P 188 2.3760 135 -0.94 24
IV.SCTE.HHZ. 2021-07-22T23:41:57.88 0.3 undecidable manual P 75 2.3625 135 -0.22 31
IV.HAGA.HHZ. 2021-07-22T23:41:56.08 0.3 undecidable manual P 187 2.2420 136 -0.86 28
IV.HCRL.HHZ. 2021-07-22T23:41:56.78 0.3 undecidable manual P 189 2.2564 136 -0.29 33
IV.HLNI.HHZ. 2021-07-22T23:41:56.02 0.1 undecidable manual P 193 2.2159 137 -0.66 42
IV.PETRA.HHZ. 2021-07-22T23:41:55.35 0.3 undecidable manual P 213 1.9875 140 0.76 36
IV.ESCV.HHZ. 2021-07-22T23:41:53.79 0.3 undecidable manual P 197 1.8400 142 0.47 44
OT.CGL1.HHZ. 2021-07-22T23:41:53.29 0.3 undecidable manual P 53 1.9281 141 -0.78 37
IV.EFIU.HHZ. 2021-07-22T23:41:52.64 0.3 undecidable manual P 187 1.7357 144 0.19 50
OT.TAR1.HHZ. 2021-07-22T23:41:51.24 0.3 undecidable manual P 53 1.7132 144 -1.02 38
IV.MSFR.HHZ. 2021-07-22T23:41:51.93 0.1 undecidable manual P 205 1.6323 146 0.31 70
IV.AIO.HHE. 2021-07-22T23:41:51.23 0.3 undecidable manual P 187 1.5540 147 0.21 56
IV.NOCI.HHZ. 2021-07-22T23:41:51.65 0.3 undecidable manual P 43 1.7582 143 -0.99 38
IV.NOV.HHZ. 2021-07-22T23:41:51.04 0.3 undecidable manual P 190 1.5091 148 0.36 55
IV.MTTG.HHZ. 2021-07-22T23:41:50.70 0.3 undecidable manual P 173 1.5199 147 -0.06 58
IV.MUCR.HHE. 2021-07-22T23:41:50.75 0.1 undecidable manual P 198 1.5432 147 -0.19 75
IV.MCPD.HHE. 2021-07-22T23:41:50.63 0.1 undecidable manual P 203 1.5100 148 -0.05 78
IV.SOI.EHZ. 2021-07-22T23:41:50.34 0.1 undecidable manual P 162 1.5082 148 -0.34 74
IV.IVPL.HNE. 2021-07-22T23:41:49.14 0.3 undecidable manual P 199 1.2006 153 0.56 59
IV.PLAC.HHZ. 2021-07-22T23:41:49.22 0.1 undecidable manual P 145 1.2995 151 0 87
IV.IVUG.HHZ. 2021-07-22T23:41:49.30 0.3 undecidable manual P 199 1.1808 154 0.84 53
IV.MCRV.HHZ. 2021-07-22T23:41:49.15 0.3 undecidable manual P 350 1.2896 152 0 65
IV.MSRU.HHZ. 2021-07-22T23:41:48.42 0.3 undecidable manual P 179 1.2501 152 -0.47 60
IV.PIPA.HHZ. 2021-07-22T23:41:48.01 0.1 negative manual P 91 1.0324 157 0.41 85
IX.COL3.HHZ.02 2021-07-22T23:41:48.83 0.6 undecidable manual P 355 1.1772 154 0.39 41
IV.LADO.EHZ. 2021-07-22T23:41:48.59 0.1 undecidable manual P 101 1.1826 154 0.12 87
IV.PTRP.HHZ. 2021-07-22T23:41:48.06 0.6 undecidable manual P 24 1.1017 155 0.08 45
MN.TIP.HHZ. 2021-07-22T23:41:48.09 0.1 negative manual P 108 1.0450 156 0.43 84
IV.FERC.HNN. 2021-07-22T23:41:48.16 0.3 undecidable manual P 154 1.1754 154 -0.27 64
IV.SICLA.EHZ. 2021-07-22T23:41:48.42 0.3 undecidable manual P 172 1.2707 152 -0.6 57
IV.IFIL.HHN. 2021-07-22T23:41:48.19 0.6 undecidable manual P 217 1.1799 154 -0.26 42
IV.SERS.HHZ. 2021-07-22T23:41:48.05 0.1 negative manual P 117 1.0522 156 0.34 86
IV.ILOS.HHN. 2021-07-22T23:41:48.60 0.6 undecidable manual P 201 1.1439 154 0.37 42
IV.CELI.HHZ. 2021-07-22T23:41:47.49 0.1 negative manual P 98 0.8040 161 1.03 70
IV.CDRU.HNZ. 2021-07-22T23:41:47.26 0.1 undecidable manual P 352 0.9839 158 -0.08 92
IV.CRAC.EHZ. 2021-07-22T23:41:47.83 0.3 undecidable manual P 40 1.1358 155 -0.36 63
IV.SGO.HHE. 2021-07-22T23:41:47.73 0.3 undecidable manual P 353 1.0540 156 0.01 69
IV.ORI.HHN. 2021-07-22T23:41:47.53 0.3 undecidable manual P 54 0.9200 159 0.52 64
IV.SLCN.HNZ. 2021-07-22T23:41:47.19 0.3 undecidable manual P 8 0.8831 160 0.36 67
IV.SELL.HHZ. 2021-07-22T23:41:47.96 0.1 negative manual P 120 1.0369 157 0.34 86
IX.SRN3.HNE.02 2021-07-22T23:41:47.24 0.6 undecidable manual P 359 0.9713 158 -0.03 47
IV.MCEL.HHZ. 2021-07-22T23:41:47.19 0.3 undecidable manual P 17 0.8481 160 0.52 65
IV.GRI.EHZ. 2021-07-22T23:41:47.64 0.3 undecidable manual P 133 1.0063 157 0.19 67
IV.SPS2.HHZ. 2021-07-22T23:41:46.18 0.3 undecidable manual P 108 0.7015 164 0.14 73
IV.JOPP.HHZ. 2021-07-22T23:41:46.79 0.1 undecidable manual P 161 0.9605 158 -0.43 86
IV.TDS.HHZ. 2021-07-22T23:41:46.42 0.1 undecidable manual P 77 0.6790 164 0.47 91
IV.MTSN.HHZ. 2021-07-22T23:41:46.09 0.3 undecidable manual P 16 0.7806 162 -0.27 69
IV.CMPR.HNZ. 2021-07-22T23:41:46.48 0.1 undecidable manual P 351 0.8148 161 -0.04 96
IV.SIRI.HHZ. 2021-07-22T23:41:46.02 0.3 undecidable manual P 24 0.7320 163 -0.14 72
IV.SCHR.EHZ. 2021-07-22T23:41:46.98 0.1 undecidable manual P 34 0.8247 161 0.42 89
IV.IST3.HHZ. 2021-07-22T23:41:46.65 0.1 negative manual P 195 0.7392 163 0.46 90
IV.GIZZ.HHZ. 2021-07-22T23:41:45.78 0.3 undecidable manual P 133 0.7779 162 -0.57 65
IV.MGR.HHZ. 2021-07-22T23:41:45.68 0.1 undecidable manual P 5 0.6259 165 -0.08 99
MN.CUC.HHZ. 2021-07-22T23:41:45.28 0.1 undecidable manual P 28 0.5450 167 -0.22 99
IV.CAR1.HHZ. 2021-07-22T23:41:45.26 0.1 undecidable manual P 114 0.6241 165 -0.5 91
IV.MMN.HHZ. 2021-07-22T23:41:45.29 0.3 undecidable manual P 46 0.5459 167 -0.21 74
IV.CET2.HHZ. 2021-07-22T23:41:44.70 0.1 undecidable manual P 88 0.3687 171 -0.34 100
IV.GRIS.EHZ. 2021-07-22T23:41:44.72 0.1 undecidable manual P 52 0.3669 171 -0.32 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GRIS.EHN. ML:2.5 0.0000524 1.56 AML other m 2021-07-22T23:41:46.85
IV.GRIS.EHE. ML:2.6 0.0000671 0.68 AML other m 2021-07-22T23:42:11.25
IV.CET2.HHN. ML:3.3 0.000304 0.6 AML other m 2021-07-22T23:42:12.61
IV.CET2.HHE. ML:2.9 0.0001205 1.34 AML other m 2021-07-22T23:42:13.91
IV.CAR1.HHN. ML:2.9 0.00010705 0.4 AML other m 2021-07-22T23:42:13.82
MN.CUC.HHN. ML:2.6 0.00006135 0.74 AML other m 2021-07-22T23:42:13.66
MN.CUC.HHE. ML:2.5 0.000044899999999999994 0.68 AML other m 2021-07-22T23:42:13.59
IV.MGR.HHN. ML:2.6 0.0000579 0.84 AML other m 2021-07-22T23:42:15.37
IV.TDS.HHE. ML:2.6 0.00005395 0.94 AML other m 2021-07-22T23:42:15.99
IV.NOCI.HHN. ML:2.7 0.000050799999999999995 0.54 AML other m 2021-07-22T23:42:16.29
IV.CAR1.HHE. ML:2.8 0.00007885 0.42 AML other m 2021-07-22T23:42:16.87
IV.CELI.HHE. ML:2.8 0.00008219999999999999 0.96 AML other m 2021-07-22T23:42:16.34
IV.TDS.HHN. ML:2.5 0.00003795 0.44 AML other m 2021-07-22T23:42:16.96
MN.TIP.HHN. ML:2.8 0.00006875 0.38 AML other m 2021-07-22T23:42:17.08
IV.CELI.HHN. ML:3.0 0.00014649999999999998 0.46 AML other m 2021-07-22T23:42:17.22
MN.TIP.HHE. ML:2.6 0.000053871775 0.5472 AML other m 2021-07-22T23:42:17.22
IV.SCHR.EHE. ML:2.5 0.000046 0.76 AML other m 2021-07-22T23:42:17.89
IV.MGR.HHE. ML:2.4 0.000035749999999999995 0.54 AML other m 2021-07-22T23:42:17.76
IV.SPS2.HHE. ML:2.5 0.000047350000000000006 0.46 AML other m 2021-07-22T23:42:17.83
IV.MCEL.HHE. ML:2.6 0.000054099999999999994 1.38 AML other m 2021-07-22T23:42:17.23
IV.SERS.HHN. ML:2.9 0.00009423171499999999 0.3584 AML other m 2021-07-22T23:42:17.82
IV.SERS.HHE. ML:2.8 0.00008176062 0.8352 AML other m 2021-07-22T23:42:18.22
IV.SPS2.HHN. ML:2.5 0.00004 0.54 AML other m 2021-07-22T23:42:18.70
IV.MCEL.HHN. ML:2.8 0.0000857 0.74 AML other m 2021-07-22T23:42:18.07
IV.GRI.EHN. ML:3.0 0.00012173064999999999 1.2512 AML other m 2021-07-22T23:42:18.74
IV.PIPA.HHN. ML:2.9 0.000090947005 1.0528 AML other m 2021-07-22T23:42:19.33
IV.SELL.HHN. ML:2.6 0.00004869753 0.1568 AML other m 2021-07-22T23:42:19.62
IV.PIPA.HHE. ML:3.0 0.00011678630000000001 1.6672 AML other m 2021-07-22T23:42:19.92
IV.SCHR.EHN. ML:2.4 0.000032175325000000005 0.64 AML other m 2021-07-22T23:42:20.23
IV.CRAC.EHN. ML:2.8 0.00008080362499999999 0.4544 AML other m 2021-07-22T23:42:20.39
IV.SELL.HNN. ML:3.2 0.00021944005 0.8768 AML other m 2021-07-22T23:42:21.25
IV.SELL.HHE. ML:2.7 0.0000594 0.56 AML other m 2021-07-22T23:42:21.58
IV.PLAC.HHN. ML:2.9 0.00008935205 0.1376 AML other m 2021-07-22T23:42:21.47
IV.CRAC.EHE. ML:2.8 0.0000743 0.52 AML other m 2021-07-22T23:42:21.35
IV.MTSN.HHE. ML:2.4 0.00003485 1.44 AML other m 2021-07-22T23:42:22.07
IV.NOCI.HHE. ML:2.8 0.000060150000000000005 0.42 AML other m 2021-07-22T23:42:22.54
OT.TAR1.HHN. ML:3.0 0.00010245 1.3 AML other m 2021-07-22T23:42:23.21
IV.GRI.EHE. ML:2.9 0.00010550055 1.0464 AML other m 2021-07-22T23:42:24.82
IV.PLAC.HNE. ML:2.9 0.000084314635 0.7232 AML other m 2021-07-22T23:42:24.69
IV.MTTG.HHE. ML:3.0 0.00009359999999999998 0.66 AML other m 2021-07-22T23:42:25.78
IV.MTTG.HHN. ML:3.0 0.00009970000000000001 0.56 AML other m 2021-07-22T23:42:26.60
IV.MTSN.HHN. ML:2.4 0.00003734999999999999 0.64 AML other m 2021-07-22T23:42:26.68
IV.SICLA.EHN. ML:3.2 0.0002045 0.46 AML other m 2021-07-22T23:42:28.09
IV.SICLA.EHE. ML:3.2 0.0001655 0.48 AML other m 2021-07-22T23:42:29.67
IV.PETRA.HHN. ML:2.7 0.00004720000000000001 1.24 AML other m 2021-07-22T23:42:31.81
IV.PETRA.HHE. ML:2.6 0.00002836869 0.4608 AML other m 2021-07-22T23:42:39.26
OT.TAR1.HHE. ML:2.9 0.00007209999999999999 1.36 AML other m 2021-07-22T23:42:55.97
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