Earthquake with magnitude of ML 3.1 on date 27-02-2021 and time 22:18:00 (Italy) in region Italy [Sea]

A magnitude ML 3.1 earthquake occured in region: Italy [Sea], on

  • 27-02-2021 21:18:00 (UTC)
  • 27-02-2021 22:18:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 35.52, 17.13 at 55 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 3.1 2021-02-27
21:18:00
35.52 17.13 55 2021-02-27
21:35:54
Sala Sismica INGV-Roma 87551491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-27 21:18:00 ± 0.24
Latitude 35.52 ± 0.02
Longitude 17.13 ± 0.02
Depth (km) 55 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87551491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1880
Semi-minor axis of confidence ellipse (meter) 502
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 34
Circular confidence region, given by single value of horizontal uncertainty (meter) 1880
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 320
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 3.33199
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 23
Magnitude information

ML:3.1

Field Value
Value 3.1
Uncertainty 0.3
Num. used stations 31
Type of magnitude ML
Reference to an origin 87551491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-27 21:35:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GAVE.EHZ. 2021-02-27T21:20:08.55 3.0 undecidable manual Pg 13.81 0
IV.CAFI.HNZ. 2021-02-27T21:20:03.63 3.0 undecidable manual Pn -3.18 0
IV.SLCN.HHZ. 2021-02-27T21:20:00.40 3.0 undecidable manual Sn -3.68 0
IV.MMGO.HHZ. 2021-02-27T21:19:42.42 3.0 undecidable manual Sg 0.77 0
IV.CRJA.HHZ. 2021-02-27T21:19:38.68 3.0 undecidable manual Sn -3.91 0
IV.AMUR.HHZ. 2021-02-27T21:19:16.44 3.0 positive manual Pn -5.22 0
IV.NOCI.HHZ. 2021-02-27T21:19:14.18 3.0 undecidable manual Pn -6.03 0
IV.CMPR.HHZ. 2021-02-27T21:19:13.36 3.0 negative manual Pn -2.07 0
IV.HLNI.HHZ. 2021-02-27T21:19:09.60 0.6 undecidable manual S 316 2.5766 94 -0.1 51
IV.HVZN.HHZ. 2021-02-27T21:19:09.30 0.6 undecidable manual S 311 2.555 94 0.12 50
IV.CROCE.HHE. 2021-02-27T21:19:07.60 0.6 undecidable manual S 303 2.4713 94 0.42 48
MN.CUC.HHZ. 2021-02-27T21:19:06.76 3.0 negative manual Pn -3.15 0
IV.BULG.HHZ. 2021-02-27T21:19:06.80 3.0 undecidable manual Pn -5.25 0
IV.HCRL.HHZ. 2021-02-27T21:19:06.20 0.6 undecidable manual S 317 2.4408 94 -0.24 51
IV.SSY.HHZ. 2021-02-27T21:19:04.00 0.6 undecidable manual S 315 2.3292 94 0.22 53
IV.HAGA.HHZ. 2021-02-27T21:19:04.20 0.6 undecidable manual S 319 2.3751 94 -0.68 46
IV.HSRS.HHE. 2021-02-27T21:19:01.20 0.6 undecidable manual S 316 2.1988 95 0.51 52
MN.CLTB.HHZ. 2021-02-27T21:19:00.92 3.0 positive manual Pg 0.77 0
IV.CET2.HHZ. 2021-02-27T21:19:00.20 3.0 positive manual Pn -3.18 0
IV.HAVL.HHZ. 2021-02-27T21:18:59.50 0.6 undecidable manual S 312 2.1665 95 -0.41 54
IV.PETRA.HHZ. 2021-02-27T21:18:52.96 3.0 positive manual Pn -0.39 0
IV.RESU.HHZ. 2021-02-27T21:18:52.60 3.0 undecidable manual Pg 0.15 0
IV.IVPL.HHZ. 2021-02-27T21:18:51.50 0.1 undecidable manual P 330 3.332 93 0.56 67
IV.MSFR.HHZ. 2021-02-27T21:18:50.21 0.6 negative manual P 322 3.2322 93 0.65 34
IV.JOPP.HHZ. 2021-02-27T21:18:49.60 0.3 negative manual P 343 3.2421 93 -0.1 57
IV.MILZ.HHZ. 2021-02-27T21:18:48.78 1.0 undecidable manual P 332 3.1422 93 0.47 19
IV.MUCR.HHZ. 2021-02-27T21:18:48.45 1.0 undecidable manual P 325 3.1027 93 0.68 18
IV.MSRU.HHZ. 2021-02-27T21:18:47.10 0.3 negative manual P 335 3.0343 93 0.27 62
IV.GALF.HHZ. 2021-02-27T21:18:47.32 0.6 undecidable manual P 318 3.0046 93 0.9 34
IV.MPNC.HHZ. 2021-02-27T21:18:46.25 0.6 negative manual P 332 2.9866 93 0.08 44
MN.CEL.HHZ. 2021-02-27T21:18:45.07 0.6 undecidable manual P 341 2.9129 93 -0.09 44
IV.AIO.HHZ. 2021-02-27T21:18:44.65 0.6 undecidable manual P 329 2.8841 93 -0.11 45
IV.RAFF.HHZ. 2021-02-27T21:18:44.39 0.3 undecidable manual P 308 2.8032 94 0.74 58
IV.EMPL.HHZ. 2021-02-27T21:18:43.42 0.6 negative manual P 322 2.7681 94 0.25 46
IV.ESML.HHZ. 2021-02-27T21:18:43.11 0.3 positive manual P 320 2.769 94 -0.06 71
IV.MTTG.HHZ. 2021-02-27T21:18:42.55 1.0 undecidable manual P 336 2.7339 94 -0.15 23
IV.HLNI.HHZ. 2021-02-27T21:18:40.17 0.6 undecidable manual P 316 2.5766 94 -0.36 48
IV.HVZN.HHZ. 2021-02-27T21:18:40.16 0.6 undecidable manual P 311 2.555 94 -0.07 51
IV.CROCE.HHE. 2021-02-27T21:18:39.57 1.0 undecidable manual P 303 2.4713 94 0.49 24
IV.HCRL.HHZ. 2021-02-27T21:18:38.29 0.1 undecidable manual P 317 2.4408 94 -0.36 100
IT.LNT.HGE. 2021-02-27T21:18:38.71 0.6 undecidable manual P 317 2.4614 94 -0.22 51
IV.HAGA.HHZ. 2021-02-27T21:18:37.02 0.3 undecidable manual P 319 2.3751 94 -0.72 68
IV.SSY.HHZ. 2021-02-27T21:18:36.96 1.0 undecidable manual P 315 2.3292 94 -0.15 27
IV.HSRS.HHE. 2021-02-27T21:18:35.27 0.6 undecidable manual P 316 2.1988 95 -0.05 58
IV.HAVL.HHZ. 2021-02-27T21:18:34.18 0.3 undecidable manual P 312 2.1665 95 -0.7 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MILZ.HHE. ML:3.2 0.0001259 0.32 AML other m 2021-02-27T21:18:49.62
IV.IVPL.HHN. ML:3.2 0.0001012 0.62 AML other m 2021-02-27T21:18:53.45
IV.IVPL.HHE. ML:3.1 8.87E-5 1.64 AML other m 2021-02-27T21:18:54.84
IV.MSFR.HHN. ML:2.5 2.545E-5 0.42 AML other m 2021-02-27T21:18:58.40
IV.IFIL.HHE. ML:3.4 0.000118 0.8 AML other m 2021-02-27T21:18:58.48
IV.IFIL.HHN. ML:3 4.805E-5 0.26 AML other m 2021-02-27T21:18:59.25
MN.WDD.HHE. ML:3 0.0001765 0.22 AML other m 2021-02-27T21:19:03.87
IV.HAVL.HHE. ML:3.1 0.0002482812 0.128 AML other m 2021-02-27T21:19:04.70
MN.WDD.HHN. ML:2.9 0.0001655 0.82 AML other m 2021-02-27T21:19:04.30
IV.HAVL.HHN. ML:3.1 0.0002542925 0.1792 AML other m 2021-02-27T21:19:06.51
IV.HCRL.HHN. ML:3.2 0.0002648738 0.1152 AML other m 2021-02-27T21:19:08.15
IV.HCRL.HHE. ML:3.3 0.000282806 0.1664 AML other m 2021-02-27T21:19:07.58
IV.SSY.HHE. ML:3.4 0.00038386265 0.2048 AML other m 2021-02-27T21:19:09.02
IV.SSY.HHN. ML:3.8 0.00114455435 0.128 AML other m 2021-02-27T21:19:08.03
IV.HVZN.HHE. ML:3.4 0.000358 0.32 AML other m 2021-02-27T21:19:13.41
IV.HVZN.HHN. ML:3.4 0.00030242525 0.3968 AML other m 2021-02-27T21:19:14.13
IV.ENIC.HHN. ML:3.4 0.000309 1.54 AML other m 2021-02-27T21:19:15.13
IV.ESML.HHN. ML:0 8.537721E-5 0.2432 AML other m 2021-02-27T21:19:15.72
IV.ENIC.HHE. ML:3.4 0.000327 0.2 AML other m 2021-02-27T21:19:17.22
IV.EMPL.HHE. ML:0 0.00030804885 0.2432 AML other m 2021-02-27T21:19:18.98
IV.ESML.HHE. ML:0 7.3663575E-5 0.192 AML other m 2021-02-27T21:19:15.94
IV.EMPL.HHN. ML:0 0.00051016005 0.2176 AML other m 2021-02-27T21:19:19.67
MN.CEL.HHE. ML:2.7 5.01E-5 1.5 AML other m 2021-02-27T21:19:19.83
MN.CEL.HHN. ML:2.8 5.305E-5 0.5 AML other m 2021-02-27T21:19:19.93
IV.PLAC.HHN. ML:2.3 2.01E-5 0.62 AML other m 2021-02-27T21:19:20.34
IV.RAFF.HHN. ML:0 7.5300645E-5 0.5376 AML other m 2021-02-27T21:19:18.21
IV.AIO.HHN. ML:0 3.385993E-5 0.2176 AML other m 2021-02-27T21:19:20.49
IV.PLAC.HHE. ML:2.4 2.455E-5 0.42 AML other m 2021-02-27T21:19:21.70
IV.MSRU.HHN. ML:2.9 7.345E-5 0.56 AML other m 2021-02-27T21:19:22.62
IV.MSFR.HHE. ML:2.5 2.34E-5 0.42 AML other m 2021-02-27T21:19:22.52
IV.MPNC.HHE. ML:2.9 7.9E-5 0.96 AML other m 2021-02-27T21:19:23.30
IV.AIO.HHE. ML:2.6 4.035E-5 1.58 AML other m 2021-02-27T21:19:23.97
IV.GALF.HHE. ML:3 8.9E-5 0.44 AML other m 2021-02-27T21:19:24.06
IV.MPNC.HHN. ML:2.9 7.035E-5 1.58 AML other m 2021-02-27T21:19:24.08
IV.MSRU.HHE. ML:2.8 6.73E-5 0.98 AML other m 2021-02-27T21:19:24.12
IV.MILZ.HHN. ML:2.8 5.755E-5 0.8 AML other m 2021-02-27T21:19:24.44
IV.RAFF.HHE. ML:0 8.745E-5 0.82 AML other m 2021-02-27T21:19:24.94
IV.MUCR.HHE. ML:2.7 4.375E-5 1.6 AML other m 2021-02-27T21:19:25.02
IV.MUCR.HHN. ML:2.6 3.63E-5 0.32 AML other m 2021-02-27T21:19:26.56
IV.GALF.HHN. ML:2.9 7.485E-5 0.82 AML other m 2021-02-27T21:19:37.96
IV.HAGA.HHE. ML:0 0.0001112186 0.9216 AML other m 2021-02-27T21:18:46.64
IV.HAGA.HHN. ML:0 0.0001819974 1.3184 AML other m 2021-02-27T21:18:50.56
IV.HVZN.HNE. ML:0 0.0003390073 0.32 AML other m 2021-02-27T21:19:13.41
IV.HLNI.HHE. ML:0 0.0002640918 0.1792 AML other m 2021-02-27T21:19:10.02
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download