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(km) Takeoff_angle Residual Weight
IV.ATVO.HHZ. 2021-07-13T13:09:52.40 0.6 undecidable manual S 355 411.8766 142 0.73 15
IV.ATVA.EHE. 2021-07-13T13:09:51.60 0.6 undecidable manual S 353 401.4981 142 1.3 12
IV.MML1.EHZ. 2021-07-13T13:09:49.40 0.6 undecidable manual S 1 380.4303 144 1.82 9
IV.CSP1.EHZ. 2021-07-13T13:09:48.70 0.6 undecidable manual S 4 379.0317 144 1.3 12
IV.LEVAN.EHN. 2021-07-13T13:09:27.30 0.6 undecidable manual S 193 193.0623 160 -1.05 42
IV.IACL.HHE. 2021-07-13T13:09:26.70 0.6 undecidable manual S 134 181.2852 161 -0.81 44
IV.SOLUN.HHE. 2021-07-13T13:09:23.90 0.6 undecidable manual S 162 185.9694 160 -3.94 2
IV.USI.HHE. 2021-07-13T13:09:22.80 0.6 undecidable manual S 166 111.7992 168 -0.68 63
ST.RONC.EHZ. 2021-07-13T13:09:14.45 0.3 undecidable manual P 346 721.7331 126 -2.5 4
GU.MGRO.HHZ. 2021-07-13T13:09:08.28 0.1 undecidable manual P 321 638.6829 129 -0.46 27
OX.MARN.HHZ. 2021-07-13T13:09:08.91 0.3 undecidable manual P 349 674.0142 128 -3.27 1
GU.PCP.HHZ. 2021-07-13T13:09:07.94 0.3 undecidable manual P 328 645.2652 129 -1.43 14
GU.CARD.HHZ. 2021-07-13T13:08:57.10 0.1 positive manual P 339 520.1904 135 -0.67 30
GU.MAIM.HHZ. 2021-07-13T13:08:56.32 0.3 undecidable manual P 338 508.3023 136 -0.42 24
GU.POPM.HHZ. 2021-07-13T13:08:56.50 0.3 undecidable manual P 341 513.9966 135 -0.73 22
IV.CRMI.HHZ. 2021-07-13T13:08:54.01 0.1 undecidable manual P 342 481.851 137 -0.46 33
IV.PII.HHZ. 2021-07-13T13:08:54.84 0.3 undecidable manual P 337 487.845 137 -0.14 26
IV.RUFI.EHZ. 2021-07-13T13:08:52.93 0.3 undecidable manual P 347 474.0699 138 -0.88 21
IV.ASQU.HHE. 2021-07-13T13:08:52.03 0.3 undecidable manual P 349 464.6793 138 -1 20
IV.CRTC.HHZ. 2021-07-13T13:08:51.10 0.3 undecidable manual P 0 453.0021 139 -0.97 20
IV.OSSC.HHE. 2021-07-13T13:08:51.40 0.3 undecidable manual P 343 446.4198 139 -0.14 28
IV.MAGO.CHE. 2021-07-13T13:08:51.01 0.3 undecidable manual P 336 438.1281 140 0.14 27
IV.APEC.HNN. 2021-07-13T13:08:50.65 0.3 undecidable manual P 355 431.2461 140 0.33 27
IV.CSNT.HHZ. 2021-07-13T13:08:50.81 0.3 undecidable manual P 343 440.0262 140 -0.21 27
IV.PARC.HHE. 2021-07-13T13:08:50.78 0.3 undecidable manual P 354 442.7235 140 -0.46 26
IV.ATBU.EHZ. 2021-07-13T13:08:50.01 0.3 undecidable manual P 357 421.356 141 0.47 26
IV.CRE.HHE. 2021-07-13T13:08:50.45 0.3 undecidable manual P 351 442.8234 140 -0.8 23
IV.TRIF.CHZ. 2021-07-13T13:08:49.28 0.1 undecidable manual P 337 413.8746 142 0.32 35
IV.FROS.CHE. 2021-07-13T13:08:49.37 0.3 undecidable manual P 341 415.8726 141 0.25 27
IV.ATMC.EHE. 2021-07-13T13:08:49.28 0.3 undecidable manual P 353 420.9564 141 -0.23 28
IV.MPAG.EHZ. 2021-07-13T13:08:49.92 0.1 undecidable manual P 359 437.6286 140 -0.91 28
IV.ATPC.HHE. 2021-07-13T13:08:49.16 0.1 undecidable manual P 356 422.355 141 -0.46 35
IV.FRON.EHZ. 2021-07-13T13:08:49.13 0.1 undecidable manual P 359 425.352 141 -0.73 31
IV.BADI.EHE. 2021-07-13T13:08:49.50 0.3 undecidable manual P 353 427.35 141 -0.51 26
IV.PIEI.HNN. 2021-07-13T13:08:49.55 0.1 undecidable manual P 356 428.0493 141 -0.51 34
IV.ATPI.EHE. 2021-07-13T13:08:48.90 0.1 undecidable manual P 355 419.469 141 -0.5 35
IV.SSFR.HHN. 2021-07-13T13:08:48.64 0.3 undecidable manual P 359 416.1723 141 -0.5 26
IV.AOI.HHE. 2021-07-13T13:08:48.63 0.3 undecidable manual P 8 433.1442 140 -1.84 12
IV.CELB.HHE. 2021-07-13T13:08:48.48 0.3 undecidable manual P 328 405.2832 142 0.18 27
IV.TB03.DHZ.01 2021-07-13T13:08:48.48 0.3 undecidable manual P 355 413.9745 142 -0.49 26
IV.ARVD.HHE. 2021-07-13T13:08:48.65 0.1 undecidable manual P 1 423.0543 141 -1.03 27
IV.TB01.DHZ.01 2021-07-13T13:08:48.41 0.3 undecidable manual P 355 411.5769 142 -0.37 27
IV.FOSV.HNE. 2021-07-13T13:08:48.09 0.3 undecidable manual P 359 400.4991 143 0.15 29
IV.ATVO.HHZ. 2021-07-13T13:08:48.30 0.3 undecidable manual P 355 411.8766 142 -0.5 26
IV.CAFI.HNN. 2021-07-13T13:08:48.85 0.1 undecidable manual P 350 411.0774 142 0.11 38
IV.ATVA.EHE. 2021-07-13T13:08:47.78 0.1 undecidable manual P 353 401.4981 142 -0.23 37
IV.EL6.EHE. 2021-07-13T13:08:47.73 0.1 undecidable manual P 3 404.7837 142 -0.53 34
IV.ATLO.EHE. 2021-07-13T13:08:47.67 0.3 undecidable manual P 355 404.4951 142 -0.57 26
IV.MURB.HHE. 2021-07-13T13:08:47.58 0.1 undecidable manual P 356 397.9017 143 -0.16 38
IV.CING.HNZ. 2021-07-13T13:08:47.58 0.1 undecidable manual P 4 410.3781 142 -1.11 26
IV.CSP1.EHZ. 2021-07-13T13:08:46.39 0.1 positive manual P 4 379.0317 144 0.05 40
IV.PF6.EHN. 2021-07-13T13:08:46.33 0.3 undecidable manual P 4 384.0267 144 -0.38 27
IV.MML1.EHZ. 2021-07-13T13:08:46.11 0.1 positive manual P 1 380.4303 144 -0.33 37
IV.ARCI.HHZ. 2021-07-13T13:08:46.84 0.6 undecidable manual P 342 369.852 145 1.17 13
IV.CASP.HHE. 2021-07-13T13:08:46.71 0.3 undecidable manual P 335 382.6281 144 0.11 29
IV.MF5.EHN. 2021-07-13T13:08:45.66 0.6 undecidable manual P 8 369.7521 145 -0.01 20
TV.SF14.HHN. 2021-07-13T13:08:45.24 0.1 undecidable manual P 343 356.0769 146 0.54 36
IV.ASSB.HHZ. 2021-07-13T13:08:45.32 0.6 undecidable manual P 357 372.849 144 -0.57 18
IV.MC2.EHZ. 2021-07-13T13:08:45.18 0.3 undecidable manual P 4 358.974 146 0.28 29
IV.OFFI.HHE. 2021-07-13T13:08:45.60 0.3 undecidable manual P 11 367.0548 145 0.13 30
IV.MGAB.HHZ. 2021-07-13T13:08:45.38 0.3 undecidable manual P 350 363.4584 145 0.16 29
IV.CESI.HHE. 2021-07-13T13:08:45.04 0.1 undecidable manual P 1 368.3535 145 -0.52 36
TV.SF01.EHN. 2021-07-13T13:08:45.77 0.3 undecidable manual P 343 363.3585 145 0.56 26
IV.FDMO.HHZ. 2021-07-13T13:08:45.55 0.3 undecidable manual P 3 372.2496 145 -0.3 28
IV.SACS.HHZ. 2021-07-13T13:08:45.49 0.1 undecidable manual P 348 359.8731 145 0.53 36
IV.MCIV.CHE. 2021-07-13T13:08:45.30 0.1 undecidable manual P 344 357.1758 146 0.53 36
IV.MOMA.HNZ. 2021-07-13T13:08:44.10 0.3 undecidable manual P 356 346.7862 146 0.05 31
IV.NRCA.HHZ. 2021-07-13T13:08:44.19 0.1 undecidable manual P 3 349.8831 146 -0.08 41
IV.MMO1.EHN. 2021-07-13T13:08:44.87 0.3 undecidable manual P 6 358.6743 146 -0.01 30
IV.CAMP.HHE. 2021-07-13T13:08:43.70 0.3 undecidable manual P 8 319.5357 149 1.47 19
IV.GAVE.EHZ. 2021-07-13T13:08:43.50 0.1 undecidable manual P 0 333.6105 147 0.34 39
IV.TERO.HHN. 2021-07-13T13:08:43.04 0.6 undecidable manual P 11 331.7124 148 0.01 21
IV.RM33.EHZ. 2021-07-13T13:08:42.19 0.3 undecidable manual P 5 314.6517 149 0.28 31
IV.CESX.HHE. 2021-07-13T13:08:42.80 0.3 undecidable manual P 356 325.1301 148 0.21 30
IV.ARRO.EHZ. 2021-07-13T13:08:42.67 0.3 undecidable manual P 359 321.1341 148 0.34 30
IV.LNSS.HNZ. 2021-07-13T13:08:42.70 0.3 undecidable manual P 3 324.0312 148 0.18 31
IV.BARO.HNZ. 2021-07-13T13:08:41.16 0.6 undecidable manual P 347 292.2852 151 0.64 20
IV.GIGS.HHN. 2021-07-13T13:08:41.83 0.3 undecidable manual P 11 312.8535 149 0.03 32
IV.FIAM.HNN. 2021-07-13T13:08:40.82 0.6 undecidable manual P 4 287.3901 151 0.6 22
IV.T0110.HHZ. 2021-07-13T13:08:40.55 0.3 undecidable manual P 15 292.485 151 0.02 35
IV.TOLF.HHN. 2021-07-13T13:08:40.20 0.1 undecidable manual P 345 273.615 152 0.79 46
IV.SRES.HHN. 2021-07-13T13:08:40.07 0.6 undecidable manual P 354 284.604 151 0.01 26
IV.LPEL.HHE. 2021-07-13T13:08:39.82 0.6 undecidable manual P 23 284.5041 151 -0.23 24
IV.TRIV.HHN. 2021-07-13T13:08:39.87 0.6 undecidable manual P 31 271.1286 153 0.6 26
IV.PTQR.HHZ. 2021-07-13T13:08:39.47 0.1 undecidable manual P 10 263.1366 153 0.65 55
IV.INTR.HHE. 2021-07-13T13:08:39.42 0.3 undecidable manual P 18 272.5161 152 0.07 44
IV.VVLD.HHZ. 2021-07-13T13:08:38.24 0.3 undecidable manual P 15 250.6602 154 0.1 53
IV.CERT.HNE. 2021-07-13T13:08:38.34 0.3 undecidable manual P 2 251.3595 154 0.17 52
IV.BSSO.HHZ. 2021-07-13T13:08:38.56 0.6 undecidable manual P 35 252.858 154 0.31 33
IV.RDP.HHZ. 2021-07-13T13:08:38.02 0.3 undecidable manual P 357 230.5914 156 0.93 47
IV.MCRV.HHZ. 2021-07-13T13:08:37.25 0.3 undecidable manual P 57 230.2917 156 0.17 61
IV.POFI.HNE. 2021-07-13T13:08:37.68 0.1 undecidable manual P 17 236.5854 156 0.28 76
IV.GUAR.HNN. 2021-07-13T13:08:37.77 0.3 undecidable manual P 9 237.0849 156 0.35 56
IV.RCAV.EHZ. 2021-07-13T13:08:37.97 0.1 undecidable manual P 2 239.982 155 0.4 72
IV.GIUL.HHZ. 2021-07-13T13:08:36.26 0.3 undecidable manual P 9 210.4338 158 0.14 69
IV.SNAL.HNE. 2021-07-13T13:08:36.74 1.0 undecidable manual P 55 241.6803 155 -0.92 13
IV.MBFT.HHN. 2021-07-13T13:08:35.59 0.3 undecidable manual P 178 193.0623 160 0.25 75
IV.ERC.EHN. 2021-07-13T13:08:35.93 0.6 undecidable manual P 187 184.2711 161 0.96 40
IV.LATB.EHZ. 2021-07-13T13:08:35.78 0.6 undecidable manual P 2 200.8434 159 0.1 49
IV.LEVAN.EHN. 2021-07-13T13:08:35.65 0.1 undecidable manual P 193 193.0623 160 0.31 98
IV.IACL.HHE. 2021-07-13T13:08:34.44 0.3 undecidable manual P 134 181.2852 161 -0.41 75
IV.MPG.HHE. 2021-07-13T13:08:34.52 0.3 undecidable manual P 166 174.3921 162 -0.05 86
IV.SOLUN.HHE. 2021-07-13T13:08:34.79 0.3 undecidable manual P 162 185.9694 160 -0.25 78
IV.VENT.EHE. 2021-07-13T13:08:33.88 0.6 undecidable manual P 21 131.9679 166 0.78 55
IV.USI.HHE. 2021-07-13T13:08:32.80 0.3 undecidable manual P 166 111.7992 168 0.27 100
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