Earthquake with magnitude of Md 3.3 on date 13-07-2021 and time 15:07:22 (Italy) in region Tirreno Meridionale (MARE)

A magnitude Md 3.3 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 13-07-2021 13:07:22 (UTC)
  • 13-07-2021 15:07:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.6850, 12.8600 at 535 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 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
Reviewed
Rev200
mb 4.0 2021-07-13
13:07:22
39.685 12.86 535 2022-02-23
03:46:24
Sala Sismica INGV-Roma 101357021
Bulletin
Rev1000
Md 3.3 2021-07-13
13:07:22
39.6848 12.8603 535 2022-02-23
03:42:09
Bollettino Sismico Italiano INGV 101353961
Reviewed
Rev100
ML 3.5 2021-07-13
13:07:43
40.5467 12.5712 400 2021-07-13
13:30:59
Sala Sismica INGV-Roma 92716061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-13 13:07:22 ± 0.37
Latitude 39.6848 ± 0.0135
Longitude 12.8603 ± 0.0362
Depth (km) 535 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 101353961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2512
Semi-minor axis of confidence ellipse (meter) 2125
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 99
Circular confidence region, given by single value of horizontal uncertainty (meter) 2510.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 128
Number of associated phases, regardless of their use for origin computation 105
Number of defining phases 105
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 1.00724
Epicentral distance of station farthest from the epicenter (degree) 6.50210
Number of stations at which the event was observed 97
Number of stations from which data was used for origin computation 97
Magnitudes information

ML:3.5

Field Value
Value 3.5
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 92716061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-13 13:30:59

Md:3.3

Field Value
Value 3.3
Uncertainty 0.7
Num. used stations 14
Type of magnitude Md
Reference to an origin 101353961
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-23 03:41:15

mb:4.0

Field Value
Value 4.0
Uncertainty
Num. used stations
Type of magnitude mb
Reference to an origin 101357021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-02-23 03:46:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ATVO.HHZ. 2021-07-13T13:09:52.40 0.6 undecidable manual S 355 3.7106 142 0.73 15
IV.ATVA.EHE. 2021-07-13T13:09:51.60 0.6 undecidable manual S 353 3.6171 142 1.3 12
IV.MML1.EHZ. 2021-07-13T13:09:49.40 0.6 undecidable manual S 1 3.4273 144 1.82 9
IV.CSP1.EHZ. 2021-07-13T13:09:48.70 0.6 undecidable manual S 4 3.4147 144 1.3 12
IV.LEVAN.EHN. 2021-07-13T13:09:27.30 0.6 undecidable manual S 193 1.7393 160 -1.05 42
IV.IACL.HHE. 2021-07-13T13:09:26.70 0.6 undecidable manual S 134 1.6332 161 -0.81 44
IV.SOLUN.HHE. 2021-07-13T13:09:23.90 0.6 undecidable manual S 162 1.6754 160 -3.94 2
IV.USI.HHE. 2021-07-13T13:09:22.80 0.6 undecidable manual S 166 1.0072 168 -0.68 63
ST.RONC.EHZ. 2021-07-13T13:09:14.45 0.3 undecidable manual P 346 6.5021 126 -2.5 4
GU.MGRO.HHZ. 2021-07-13T13:09:08.28 0.1 undecidable manual P 321 5.7539 129 -0.46 27
OX.MARN.HHZ. 2021-07-13T13:09:08.91 0.3 undecidable manual P 349 6.0722 128 -3.27 1
GU.PCP.HHZ. 2021-07-13T13:09:07.94 0.3 undecidable manual P 328 5.8132 129 -1.43 14
GU.CARD.HHZ. 2021-07-13T13:08:57.10 0.1 positive manual P 339 4.6864 135 -0.67 30
GU.MAIM.HHZ. 2021-07-13T13:08:56.32 0.3 undecidable manual P 338 4.5793 136 -0.42 24
GU.POPM.HHZ. 2021-07-13T13:08:56.50 0.3 undecidable manual P 341 4.6306 135 -0.73 22
IV.CRMI.HHZ. 2021-07-13T13:08:54.01 0.1 undecidable manual P 342 4.3410 137 -0.46 33
IV.PII.HHZ. 2021-07-13T13:08:54.84 0.3 undecidable manual P 337 4.3950 137 -0.14 26
IV.RUFI.EHZ. 2021-07-13T13:08:52.93 0.3 undecidable manual P 347 4.2709 138 -0.88 21
IV.ASQU.HHE. 2021-07-13T13:08:52.03 0.3 undecidable manual P 349 4.1863 138 -1 20
IV.CRTC.HHZ. 2021-07-13T13:08:51.10 0.3 undecidable manual P 0 4.0811 139 -0.97 20
IV.OSSC.HHE. 2021-07-13T13:08:51.40 0.3 undecidable manual P 343 4.0218 139 -0.14 28
IV.MAGO.CHE. 2021-07-13T13:08:51.01 0.3 undecidable manual P 336 3.9471 140 0.14 27
IV.APEC.HNN. 2021-07-13T13:08:50.65 0.3 undecidable manual P 355 3.8851 140 0.33 27
IV.CSNT.HHZ. 2021-07-13T13:08:50.81 0.3 undecidable manual P 343 3.9642 140 -0.21 27
IV.PARC.HHE. 2021-07-13T13:08:50.78 0.3 undecidable manual P 354 3.9885 140 -0.46 26
IV.ATBU.EHZ. 2021-07-13T13:08:50.01 0.3 undecidable manual P 357 3.7960 141 0.47 26
IV.CRE.HHE. 2021-07-13T13:08:50.45 0.3 undecidable manual P 351 3.9894 140 -0.8 23
IV.TRIF.CHZ. 2021-07-13T13:08:49.28 0.1 undecidable manual P 337 3.7286 142 0.32 35
IV.FROS.CHE. 2021-07-13T13:08:49.37 0.3 undecidable manual P 341 3.7466 141 0.25 27
IV.ATMC.EHE. 2021-07-13T13:08:49.28 0.3 undecidable manual P 353 3.7924 141 -0.23 28
IV.MPAG.EHZ. 2021-07-13T13:08:49.92 0.1 undecidable manual P 359 3.9426 140 -0.91 28
IV.ATPC.HHE. 2021-07-13T13:08:49.16 0.1 undecidable manual P 356 3.8050 141 -0.46 35
IV.FRON.EHZ. 2021-07-13T13:08:49.13 0.1 undecidable manual P 359 3.8320 141 -0.73 31
IV.BADI.EHE. 2021-07-13T13:08:49.50 0.3 undecidable manual P 353 3.8500 141 -0.51 26
IV.PIEI.HNN. 2021-07-13T13:08:49.55 0.1 undecidable manual P 356 3.8563 141 -0.51 34
IV.CELB.HHE. 2021-07-13T13:08:48.48 0.3 undecidable manual P 328 3.6512 142 0.18 27
IV.TB03.DHZ.01 2021-07-13T13:08:48.48 0.3 undecidable manual P 355 3.7295 142 -0.49 26
IV.ARVD.HHE. 2021-07-13T13:08:48.65 0.1 undecidable manual P 1 3.8113 141 -1.03 27
IV.TB01.DHZ.01 2021-07-13T13:08:48.41 0.3 undecidable manual P 355 3.7079 142 -0.37 27
IV.FOSV.HNE. 2021-07-13T13:08:48.09 0.3 undecidable manual P 359 3.6081 143 0.15 29
IV.ATVO.HHZ. 2021-07-13T13:08:48.30 0.3 undecidable manual P 355 3.7106 142 -0.5 26
IV.CAFI.HNN. 2021-07-13T13:08:48.85 0.1 undecidable manual P 350 3.7034 142 0.11 38
IV.ATPI.EHE. 2021-07-13T13:08:48.90 0.1 undecidable manual P 355 3.7790 141 -0.5 35
IV.SSFR.HHN. 2021-07-13T13:08:48.64 0.3 undecidable manual P 359 3.7493 141 -0.5 26
IV.AOI.HHE. 2021-07-13T13:08:48.63 0.3 undecidable manual P 8 3.9022 140 -1.84 12
IV.ATVA.EHE. 2021-07-13T13:08:47.78 0.1 undecidable manual P 353 3.6171 142 -0.23 37
IV.EL6.EHE. 2021-07-13T13:08:47.73 0.1 undecidable manual P 3 3.6467 142 -0.53 34
IV.ATLO.EHE. 2021-07-13T13:08:47.67 0.3 undecidable manual P 355 3.6441 142 -0.57 26
IV.MURB.HHE. 2021-07-13T13:08:47.58 0.1 undecidable manual P 356 3.5847 143 -0.16 38
IV.CING.HNZ. 2021-07-13T13:08:47.58 0.1 undecidable manual P 4 3.6971 142 -1.11 26
IV.MML1.EHZ. 2021-07-13T13:08:46.11 0.1 positive manual P 1 3.4273 144 -0.33 37
IV.ARCI.HHZ. 2021-07-13T13:08:46.84 0.6 undecidable manual P 342 3.3320 145 1.17 13
IV.CASP.HHE. 2021-07-13T13:08:46.71 0.3 undecidable manual P 335 3.4471 144 0.11 29
IV.CSP1.EHZ. 2021-07-13T13:08:46.39 0.1 positive manual P 4 3.4147 144 0.05 40
IV.PF6.EHN. 2021-07-13T13:08:46.33 0.3 undecidable manual P 4 3.4597 144 -0.38 27
IV.MC2.EHZ. 2021-07-13T13:08:45.18 0.3 undecidable manual P 4 3.2340 146 0.28 29
IV.ASSB.HHZ. 2021-07-13T13:08:45.32 0.6 undecidable manual P 357 3.3590 144 -0.57 18
IV.OFFI.HHE. 2021-07-13T13:08:45.60 0.3 undecidable manual P 11 3.3068 145 0.13 30
IV.MGAB.HHZ. 2021-07-13T13:08:45.38 0.3 undecidable manual P 350 3.2744 145 0.16 29
IV.CESI.HHE. 2021-07-13T13:08:45.04 0.1 undecidable manual P 1 3.3185 145 -0.52 36
TV.SF01.EHN. 2021-07-13T13:08:45.77 0.3 undecidable manual P 343 3.2735 145 0.56 26
IV.FDMO.HHZ. 2021-07-13T13:08:45.55 0.3 undecidable manual P 3 3.3536 145 -0.3 28
IV.SACS.HHZ. 2021-07-13T13:08:45.49 0.1 undecidable manual P 348 3.2421 145 0.53 36
IV.MCIV.CHE. 2021-07-13T13:08:45.30 0.1 undecidable manual P 344 3.2178 146 0.53 36
IV.MF5.EHN. 2021-07-13T13:08:45.66 0.6 undecidable manual P 8 3.3311 145 -0.01 20
TV.SF14.HHN. 2021-07-13T13:08:45.24 0.1 undecidable manual P 343 3.2079 146 0.54 36
IV.MOMA.HNZ. 2021-07-13T13:08:44.10 0.3 undecidable manual P 356 3.1242 146 0.05 31
IV.NRCA.HHZ. 2021-07-13T13:08:44.19 0.1 undecidable manual P 3 3.1521 146 -0.08 41
IV.MMO1.EHN. 2021-07-13T13:08:44.87 0.3 undecidable manual P 6 3.2313 146 -0.01 30
IV.CAMP.HHE. 2021-07-13T13:08:43.70 0.3 undecidable manual P 8 2.8787 149 1.47 19
IV.GAVE.EHZ. 2021-07-13T13:08:43.50 0.1 undecidable manual P 0 3.0055 147 0.34 39
IV.TERO.HHN. 2021-07-13T13:08:43.04 0.6 undecidable manual P 11 2.9884 148 0.01 21
IV.ARRO.EHZ. 2021-07-13T13:08:42.67 0.3 undecidable manual P 359 2.8931 148 0.34 30
IV.LNSS.HNZ. 2021-07-13T13:08:42.70 0.3 undecidable manual P 3 2.9192 148 0.18 31
IV.RM33.EHZ. 2021-07-13T13:08:42.19 0.3 undecidable manual P 5 2.8347 149 0.28 31
IV.CESX.HHE. 2021-07-13T13:08:42.80 0.3 undecidable manual P 356 2.9291 148 0.21 30
IV.BARO.HNZ. 2021-07-13T13:08:41.16 0.6 undecidable manual P 347 2.6332 151 0.64 20
IV.GIGS.HHN. 2021-07-13T13:08:41.83 0.3 undecidable manual P 11 2.8185 149 0.03 32
IV.FIAM.HNN. 2021-07-13T13:08:40.82 0.6 undecidable manual P 4 2.5891 151 0.6 22
IV.T0110.HHZ. 2021-07-13T13:08:40.55 0.3 undecidable manual P 15 2.6350 151 0.02 35
IV.TOLF.HHN. 2021-07-13T13:08:40.20 0.1 undecidable manual P 345 2.4650 152 0.79 46
IV.SRES.HHN. 2021-07-13T13:08:40.07 0.6 undecidable manual P 354 2.5640 151 0.01 26
IV.LPEL.HHE. 2021-07-13T13:08:39.82 0.6 undecidable manual P 23 2.5631 151 -0.23 24
IV.TRIV.HHN. 2021-07-13T13:08:39.87 0.6 undecidable manual P 31 2.4426 153 0.6 26
IV.PTQR.HHZ. 2021-07-13T13:08:39.47 0.1 undecidable manual P 10 2.3706 153 0.65 55
IV.INTR.HHE. 2021-07-13T13:08:39.42 0.3 undecidable manual P 18 2.4551 152 0.07 44
IV.VVLD.HHZ. 2021-07-13T13:08:38.24 0.3 undecidable manual P 15 2.2582 154 0.1 53
IV.CERT.HNE. 2021-07-13T13:08:38.34 0.3 undecidable manual P 2 2.2645 154 0.17 52
IV.BSSO.HHZ. 2021-07-13T13:08:38.56 0.6 undecidable manual P 35 2.2780 154 0.31 33
IV.RDP.HHZ. 2021-07-13T13:08:38.02 0.3 undecidable manual P 357 2.0774 156 0.93 47
IV.MCRV.HHZ. 2021-07-13T13:08:37.25 0.3 undecidable manual P 57 2.0747 156 0.17 61
IV.POFI.HNE. 2021-07-13T13:08:37.68 0.1 undecidable manual P 17 2.1314 156 0.28 76
IV.GUAR.HNN. 2021-07-13T13:08:37.77 0.3 undecidable manual P 9 2.1359 156 0.35 56
IV.RCAV.EHZ. 2021-07-13T13:08:37.97 0.1 undecidable manual P 2 2.1620 155 0.4 72
IV.SNAL.HNE. 2021-07-13T13:08:36.74 1.0 undecidable manual P 55 2.1773 155 -0.92 13
IV.GIUL.HHZ. 2021-07-13T13:08:36.26 0.3 undecidable manual P 9 1.8958 158 0.14 69
IV.ERC.EHN. 2021-07-13T13:08:35.93 0.6 undecidable manual P 187 1.6601 161 0.96 40
IV.LATB.EHZ. 2021-07-13T13:08:35.78 0.6 undecidable manual P 2 1.8094 159 0.1 49
IV.LEVAN.EHN. 2021-07-13T13:08:35.65 0.1 undecidable manual P 193 1.7393 160 0.31 98
IV.MBFT.HHN. 2021-07-13T13:08:35.59 0.3 undecidable manual P 178 1.7393 160 0.25 75
IV.IACL.HHE. 2021-07-13T13:08:34.44 0.3 undecidable manual P 134 1.6332 161 -0.41 75
IV.MPG.HHE. 2021-07-13T13:08:34.52 0.3 undecidable manual P 166 1.5711 162 -0.05 86
IV.SOLUN.HHE. 2021-07-13T13:08:34.79 0.3 undecidable manual P 162 1.6754 160 -0.25 78
IV.VENT.EHE. 2021-07-13T13:08:33.88 0.6 undecidable manual P 21 1.1889 166 0.78 55
IV.USI.HHE. 2021-07-13T13:08:32.80 0.3 undecidable manual P 166 1.0072 168 0.27 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SNAL.HNE. Md:3.3 97 END duration s
IV.MCRV.HHZ. Md:3.2 96 END duration s
IV.VVLD.HHZ. Md:3.2 90 END duration s
IV.BSSO.HHZ. Md:3.2 91 END duration s
IV.INTR.HHE. Md:3.3 96 END duration s
IV.TOLF.HHN. Md:3.2 87 END duration s
IV.LNSS.HNZ. Md:3.3 90 END duration s
IV.TERO.HHN. Md:3.3 91 END duration s
IV.GAVE.EHZ. Md:3.3 92 END duration s
IV.MML1.EHZ. Md:3.3 93 END duration s
IV.CSP1.EHZ. Md:3.4 106 END duration s
IV.CING.HNZ. Md:3.2 70 END duration s
IV.ATVO.HHZ. Md:3.2 70 END duration s
IV.ATPC.HHE. Md:3.2 70 END duration s
GU.MGRO.HHZ. Md:3.3 73 END duration s
ST.RONC.EHZ. Md:3.4 78 END duration s
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, http://terremoti.ingv.it/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