Earthquake with magnitude of ML 3.1 on date 27-03-2021 and time 23:49:36 (UTC) in region Adriatico Centrale (MARE)

A magnitude ML 3.1 earthquake occured in region: Adriatico Centrale (MARE), on

  • 27-03-2021 23:49:36 (UTC)
  • 28-03-2021 00:49:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.5770, 16.2970 at 10 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
Bulletin
Rev1000
ML 3.1 2021-03-27
23:49:36
42.5767 16.2973 10 2021-07-12
16:55:08
Bollettino Sismico Italiano INGV 89527161
Reviewed
Rev100
ML 3.1 2021-03-27
23:49:35
42.6675 16.2498 10 2021-03-27
23:58:58
Sala Sismica INGV-Roma 88537311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-27 23:49:36 ± 0.19
Latitude 42.5767 ± 0.0099
Longitude 16.2973 ± 0.0171
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89527161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1470
Semi-minor axis of confidence ellipse (meter) 1090
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 284
Circular confidence region, given by single value of horizontal uncertainty (meter) 1470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
Number of associated phases, regardless of their use for origin computation 78
Number of defining phases 78
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.70057
Epicentral distance of station farthest from the epicenter (degree) 2.50011
Number of stations at which the event was observed 65
Number of stations from which data was used for origin computation 65
Magnitudes information

ML:3.1

Field Value
Value 3.1
Uncertainty 0.2
Num. used stations 19
Type of magnitude ML
Reference to an origin 89527161
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-07-12 09:47:36

ML:3.1

Field Value
Value 3.1
Uncertainty 0.3
Num. used stations 19
Type of magnitude ML
Reference to an origin 88537311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-27 23:58:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.BLY.HHE. 2021-03-27T23:50:19.13 0.6 undecidable manual P 16 251.2596 38 4.9 1
IV.SIRI.HNE. 2021-03-27T23:50:17.51 0.6 undecidable manual P 188 268.0317 38 1.19 19
IV.SCHR.EHN. 2021-03-27T23:50:16.35 0.6 undecidable manual P 184 264.3354 38 0.49 26
IV.MGR.HHZ. 2021-03-27T23:50:16.97 0.6 undecidable manual P 193 277.5111 38 -0.54 22
OT.OT11.EHE. 2021-03-27T23:50:16.58 0.3 undecidable manual S 214 141.9468 50 -0.19 86
IV.CAGG.EHE. 2021-03-27T23:50:13.92 0.6 undecidable manual P 196 233.2887 38 1.92 15
OT.CGL1.HHN. 2021-03-27T23:50:12.07 0.6 undecidable manual P 154 236.6853 38 -0.34 33
IV.TERO.HHN. 2021-03-27T23:50:12.51 0.6 undecidable manual P 272 220.0131 38 2.16 14
IV.VVLD.HHZ. 2021-03-27T23:50:12.68 0.6 undecidable manual P 251 233.2887 38 0.69 31
IV.SGO.HHE. 2021-03-27T23:50:12.58 1.0 undecidable manual P 200 238.2837 38 -0.04 18
IV.POFI.HNE. 2021-03-27T23:50:12.69 0.3 undecidable manual P 247 232.989 38 0.72 46
IX.SRN3.HNE.02 2021-03-27T23:50:12.28 0.6 undecidable manual P 197 242.1798 38 -0.82 27
IV.PTRP.HHZ. 2021-03-27T23:50:12.76 0.6 undecidable manual P 185 228.7932 38 1.32 24
IX.CMP3.HNE.02 2021-03-27T23:50:11.93 0.6 undecidable manual P 206 236.1858 38 -0.43 33
IX.PGN3.HHN. 2021-03-27T23:50:11.93 0.6 undecidable manual P 191 226.2069 38 0.81 31
OT.MASS.HHE. 2021-03-27T23:50:11.26 0.3 undecidable manual P 162 226.8063 38 0.07 57
IX.COL3.HHE.02 2021-03-27T23:50:11.58 1.0 undecidable manual P 201 224.4087 38 0.69 16
IV.CERA.HNN. 2021-03-27T23:50:10.24 0.6 undecidable manual P 241 216.7164 38 0.3 39
IV.MIGL.HHZ. 2021-03-27T23:50:10.02 1.0 undecidable manual P 177 219.114 38 -0.21 19
IV.VAGA.HHZ. 2021-03-27T23:50:10.09 0.6 undecidable manual P 234 213.3309 38 0.58 37
IV.INTR.HHE. 2021-03-27T23:50:09.08 0.6 undecidable manual P 253 206.1381 38 0.46 40
OT.OT05.EHZ. 2021-03-27T23:50:09.58 0.3 undecidable manual S 210 116.6943 50 -0.45 86
IV.VCEL.EHN. 2021-03-27T23:50:09.11 0.3 undecidable manual P 265 201.9423 38 1.01 49
IV.MCRV.HHN. 2021-03-27T23:50:09.78 0.6 undecidable manual P 206 219.9132 38 -0.55 36
OT.OT07.EHZ. 2021-03-27T23:50:09.61 0.3 undecidable manual S 204 116.1948 50 -0.27 90
IV.ACER.HNZ. 2021-03-27T23:50:09.24 0.6 undecidable manual P 189 200.7435 38 1.3 29
OT.OT06.EHZ. 2021-03-27T23:50:09.86 0.3 undecidable manual S 211 114.4965 50 0.42 87
IV.T0110.HHZ. 2021-03-27T23:50:09.84 0.6 undecidable manual P 260 210.0342 38 0.74 35
IV.NOCI.HHN. 2021-03-27T23:50:08.80 0.3 undecidable manual P 162 208.236 38 -0.09 64
IV.APRC.HHZ. 2021-03-27T23:50:08.60 0.3 undecidable manual S 215 110.0121 50 0.36 89
OT.OT12.EHZ. 2021-03-27T23:50:08.37 0.3 undecidable manual S 197 109.6125 50 0.24 91
IV.MRLC.HHE. 2021-03-27T23:50:08.30 0.6 undecidable manual P 199 212.7315 38 -1.14 29
OT.OT04.EHZ. 2021-03-27T23:50:08.85 0.3 undecidable manual S 212 111.8991 50 0.12 93
IV.SGG.HHN. 2021-03-27T23:50:08.79 0.6 undecidable manual P 231 206.0382 38 0.19 42
IX.LIO3.HHZ.02 2021-03-27T23:50:08.79 0.6 undecidable manual P 207 208.0362 38 -0.06 43
IV.VITU.HHZ. 2021-03-27T23:50:08.72 0.6 undecidable manual P 222 207.0372 38 -0.01 44
OT.OT03.EHZ. 2021-03-27T23:50:08.63 0.3 undecidable manual S 209 109.7124 50 0.48 87
IV.PSB1.HNZ. 2021-03-27T23:50:07.46 0.6 undecidable manual P 220 193.8615 38 0.37 44
IV.PTRJ.HNN. 2021-03-27T23:50:07.95 0.6 undecidable manual P 228 198.357 38 0.3 43
IV.SNAL.HNE. 2021-03-27T23:50:07.35 0.6 undecidable manual P 207 204.1401 38 -1.01 32
IV.MIDA.HNZ. 2021-03-27T23:50:07.36 0.6 undecidable manual P 239 197.5578 38 -0.19 44
IX.SSB3.HNE.02 2021-03-27T23:50:07.36 0.6 undecidable manual P 208 188.1672 38 0.98 36
IV.RNI2.HNE. 2021-03-27T23:50:07.93 1.0 undecidable manual P 242 201.243 38 -0.09 22
IV.MSAG.HHZ. 2021-03-27T23:50:06.38 0.3 undecidable manual S 199 101.121 50 0.53 87
IV.LPEL.HHE. 2021-03-27T23:50:06.27 0.6 undecidable manual P 252 183.0834 38 0.52 45
IV.SGRT.HHZ. 2021-03-27T23:50:06.61 0.6 undecidable manual S 207 101.9202 50 0.53 58
IV.CAFE.HHN. 2021-03-27T23:50:06.44 1.0 undecidable manual P 207 192.8625 38 -0.53 21
IX.RSF3.HNE.02 2021-03-27T23:50:06.98 0.6 undecidable manual P 208 201.4428 38 -1.06 32
IV.SACR.HNN. 2021-03-27T23:50:06.13 0.6 undecidable manual P 226 185.2701 38 0.11 48
IV.BIOG.HHZ. 2021-03-27T23:50:06.43 0.6 undecidable manual P 213 180.486 38 1 37
IV.TST01.HHZ. 2021-03-27T23:50:05.86 0.3 undecidable manual P 240 181.9845 38 0.25 72
IV.AMUR.HHN. 2021-03-27T23:50:05.86 0.3 undecidable manual P 172 186.9684 38 -0.37 68
IV.BSSO.HHE. 2021-03-27T23:50:05.51 0.3 undecidable manual P 231 180.9855 38 0.02 76
IV.SGTA.HHZ. 2021-03-27T23:50:05.35 0.3 undecidable manual P 206 177.489 38 0.3 73
IV.TST02.HHE. 2021-03-27T23:50:04.14 0.6 undecidable manual P 248 171.6948 50 -0.05 52
IV.PALZ.HHN. 2021-03-27T23:50:04.77 0.3 undecidable manual P 189 183.2832 38 -1 55
OT.OT15.EHZ. 2021-03-27T23:50:04.93 1.0 undecidable manual P 163 169.7967 50 1.03 19
IV.MRVN.HHE. 2021-03-27T23:50:03.04 0.6 undecidable manual P 183 168.3093 50 -0.64 46
IV.MOCO.HNE. 2021-03-27T23:50:03.41 0.3 undecidable manual P 215 163.5141 50 0.47 75
IV.TRIV.HHN. 2021-03-27T23:50:03.64 0.3 undecidable manual P 239 169.3971 50 -0.2 77
IV.CIGN.HHN. 2021-03-27T23:50:01.11 0.3 undecidable manual P 229 153.6351 50 -0.3 81
OT.OT13.EHZ. 2021-03-27T23:50:00.96 0.6 undecidable manual S 187 77.7666 50 1.32 42
OT.OT11.EHE. 2021-03-27T23:50:00.51 0.3 undecidable manual P 214 141.9468 50 0.89 69
OT.OT14.EHZ. 2021-03-27T23:50:00.90 0.3 undecidable manual S 203 81.9513 50 0.15 98
IV.TREM.HHN. 2021-03-27T23:49:59.60 0.6 undecidable manual S 232 81.8514 50 -1.12 47
IV.MELA.HHZ. 2021-03-27T23:49:58.12 0.3 undecidable manual P 225 136.3635 50 -0.63 78
OT.OT06.EHZ. 2021-03-27T23:49:54.84 0.3 undecidable manual P 211 114.4965 50 -0.54 84
OT.OT03.EHZ. 2021-03-27T23:49:54.10 0.3 undecidable manual P 209 109.7124 50 -0.53 85
OT.OT05.EHZ. 2021-03-27T23:49:54.60 0.3 undecidable manual P 210 116.6943 50 -1.12 65
IV.APRC.HHZ. 2021-03-27T23:49:54.08 0.3 undecidable manual P 215 110.0121 50 -0.61 83
OT.OT07.EHZ. 2021-03-27T23:49:54.95 0.3 undecidable manual P 204 116.1948 50 -0.68 79
OT.OT04.EHZ. 2021-03-27T23:49:54.32 0.3 undecidable manual P 212 111.8991 50 -0.65 81
OT.OT12.EHZ. 2021-03-27T23:49:54.47 0.3 undecidable manual P 197 109.6125 50 -0.15 93
IV.MSAG.HHZ. 2021-03-27T23:49:53.31 0.3 undecidable manual P 199 101.121 50 0 98
IV.SGRT.HHZ. 2021-03-27T23:49:52.97 0.3 undecidable manual P 207 101.9202 50 -0.47 88
OT.OT13.EHZ. 2021-03-27T23:49:50.15 0.3 undecidable manual P 187 77.7666 50 0.43 94
OT.OT14.EHZ. 2021-03-27T23:49:50.30 0.3 undecidable manual P 203 81.9513 50 -0.06 100
IV.TREM.HHN. 2021-03-27T23:49:49.36 0.3 undecidable manual P 232 81.8514 50 -0.99 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OT.OT13.EHE. ML:0.0 0.003374835 0.2816 AML other m 2021-03-27T23:50:02.46
OT.OT13.EHN. ML:0.0 0.0043633745 0.2688 AML other m 2021-03-27T23:50:03.99
IV.SGRT.HHE. ML:3.1 0.00118302 0.7296 AML other m 2021-03-27T23:50:09.54
IV.MSAG.HHE. ML:2.6 0.0003505 0.36 AML other m 2021-03-27T23:50:07.44
IV.MSAG.HNE. ML:2.9 0.0008454999999999999 0.36 AML other m 2021-03-27T23:50:07.44
IV.SGRT.HHN. ML:3.3 0.0019428315 0.4352 AML other m 2021-03-27T23:50:08.45
IV.MSAG.HHN. ML:2.8 0.0006026300500000001 0.32 AML other m 2021-03-27T23:50:08.24
IV.MSAG.HNN. ML:3.2 0.0014451975 0.3072 AML other m 2021-03-27T23:50:08.25
IV.APRC.HHE. ML:3.4 0.0020730745 0.4608 AML other m 2021-03-27T23:50:09.91
IV.APRC.HNE. ML:3.4 0.0021253310000000003 0.448 AML other m 2021-03-27T23:50:09.91
OT.OT12.EHE. ML:2.7 0.0004104142 0.9216 AML other m 2021-03-27T23:50:09.27
IV.APRC.HHN. ML:3.3 0.0016546784999999999 0.3712 AML other m 2021-03-27T23:50:11.40
OT.OT12.EHN. ML:2.8 0.00056847415 0.32 AML other m 2021-03-27T23:50:13.77
OT.OT05.EHN. ML:3.2 0.00118165455 0.5888 AML other m 2021-03-27T23:50:11.60
OT.OT05.EHE. ML:3.0 0.0007897532000000001 0.5504 AML other m 2021-03-27T23:50:10.46
IV.MELA.HHE. ML:3.1 0.00070679655 0.4096 AML other m 2021-03-27T23:50:20.43
IV.MELA.HNE. ML:3.1 0.0007573325000000001 0.448 AML other m 2021-03-27T23:50:20.44
IV.MELA.HNN. ML:3.0 0.000607 0.58 AML other m 2021-03-27T23:50:20.27
IV.MELA.HHN. ML:3.1 0.000722 0.66 AML other m 2021-03-27T23:50:20.25
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