Earthquake with magnitude of ML 2.1 on date 06-03-2021 and time 03:39:27 (UTC) in region 3 km NE Aulla (MS)

A magnitude ML 2.1 earthquake occured in region: 3 km NE Aulla (MS), on

  • 06-03-2021 03:39:27 (UTC)
  • 06-03-2021 04:39:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.23, 9.99 at 8 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Aulla MS 3 11263 11263
Tresana MS 4 2044 13307
Podenzana MS 5 2180 15487
Licciana Nardi MS 6 4949 20436
Villafranca in Lunigiana MS 8 4770 25206
Bolano SP 9 7813 33019
Santo Stefano di Magra SP 10 9360 42379
Bagnone MS 10 1887 44266
Fivizzano MS 10 7925 52191
Fosdinovo MS 10 4883 57074
Filattiera MS 13 2309 59383
Follo SP 13 6337 65720
Calice al Cornoviglio SP 13 1138 66858
Mulazzo MS 13 2424 69282
Vezzano Ligure SP 13 7356 76638
Sarzana SP 13 21976 98614
Comano MS 14 714 99328
Arcola SP 14 10607 109935
Castelnuovo Magra SP 14 8415 118350
Casola in Lunigiana MS 15 988 119338
Ortonovo SP 16 8277 127615
Lerici SP 18 10228 137843
Ameglia SP 18 4365 142208
Minucciano LU 18 2102 144310
Beverino SP 18 2429 146739
Carrara MS 19 63133 209872
La Spezia SP 19 93959 303831
Pontremoli MS 19 7357 311188
Rocchetta di Vara SP 19 703 311891

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km NW of Carrara (63133 inhabitants)
19 Km NE of La Spezia (93959 inhabitants)
24 Km NW of Massa (69479 inhabitants)
45 Km NW of Viareggio (62467 inhabitants)
59 Km NW of Lucca (89046 inhabitants)
66 Km NW of Pisa (89158 inhabitants)
69 Km SW of Parma (192836 inhabitants)
73 Km SW of Reggio nell'Emilia (171345 inhabitants)
79 Km NW of Livorno (159219 inhabitants)
81 Km W of Pistoia (90315 inhabitants)
87 Km E of Genova (586655 inhabitants)
88 Km SW of Modena (184973 inhabitants)
94 Km SW of Carpi (70699 inhabitants)
95 Km S of Piacenza (102191 inhabitants)
96 Km W of Prato (191150 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours)

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows 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
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 2.1 2021-03-06
03:39:27
44.23 9.99 8 2021-03-06
03:47:33
Sala Sismica INGV-Roma 87802511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-06 03:39:27 ± 0.06
Latitude 44.23 ± 0.00
Longitude 9.99 ± 0.01
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87802511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 350
Semi-minor axis of confidence ellipse (meter) 283
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 174
Circular confidence region, given by single value of horizontal uncertainty (meter) 350
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.09533
Epicentral distance of station farthest from the epicenter (degree) 1.25905
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 87802511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-06 03:47:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.CANO.HHZ. 2021-03-06T03:39:51.57 0.6 undecidable manual P 270 1.2591 50 0.26 39
IV.PII.HHZ. 2021-03-06T03:39:49.57 0.6 undecidable manual S 143 0.6331 50 -0.3 45
IV.BDI.HHZ. 2021-03-06T03:39:44.75 0.6 undecidable manual S 111 0.4614 50 -0.03 49
GU.GSCL.HHE. 2021-03-06T03:39:44.32 0.6 undecidable manual S 74 0.4416 50 0.11 48
GU.RNCA.HHE. 2021-03-06T03:39:43.77 0.6 undecidable manual P 288 0.7842 50 0.58 40
IV.BOB.HHE. 2021-03-06T03:39:41.17 0.6 undecidable manual P 324 0.6664 50 0 47
GU.GORR.HHE. 2021-03-06T03:39:40.36 1.0 undecidable manual P 307 0.6286 50 -0.17 23
IV.PII.HHZ. 2021-03-06T03:39:40.69 0.1 negative manual P 143 0.6331 50 0.09 93
GU.POPM.HHE. 2021-03-06T03:39:39.89 1.0 undecidable manual P 108 0.5765 50 0.26 23
MN.VLC.HHZ. 2021-03-06T03:39:39.06 0.6 undecidable manual S 103 0.2887 104 -0.32 48
GU.SARM.EHE. 2021-03-06T03:39:39.27 0.6 undecidable manual S 98 0.2941 103 -0.31 48
GU.GRAM.HHZ. 2021-03-06T03:39:38.13 0.6 undecidable manual S 11 0.268 105 -0.46 47
IV.BDI.HHZ. 2021-03-06T03:39:37.68 0.6 positive manual P 111 0.4614 50 0.02 49
GU.GSCL.HHE. 2021-03-06T03:39:37.45 0.6 undecidable manual P 74 0.4416 50 0.12 48
GU.MAIM.HHE. 2021-03-06T03:39:37.81 0.6 undecidable manual P 131 0.4748 50 -0.09 48
GU.CARD.HHZ. 2021-03-06T03:39:36.42 1.0 undecidable manual P 120 0.4029 50 -0.25 24
IV.PLMA.HHZ. 2021-03-06T03:39:35.81 0.6 undecidable manual S 210 0.2041 109 -0.43 47
IV.MSSA.HHZ. 2021-03-06T03:39:35.70 0.6 undecidable manual P 285 0.3525 50 -0.11 49
GU.SARM.EHE. 2021-03-06T03:39:34.42 0.6 undecidable manual P 98 0.2941 103 -0.23 49
MN.VLC.HHZ. 2021-03-06T03:39:34.51 0.6 positive manual P 103 0.2887 104 -0.03 51
GU.GRAM.HHZ. 2021-03-06T03:39:33.93 0.1 positive manual P 11 0.268 105 -0.16 99
GU.EQUI.HHZ. 2021-03-06T03:39:33.75 0.6 undecidable manual S 118 0.1286 119 0.17 51
IV.PLMA.HHZ. 2021-03-06T03:39:32.76 0.3 undecidable manual P 210 0.2041 109 0.03 77
GU.FIVI.HNZ. 2021-03-06T03:39:32.89 0.6 undecidable manual S 83 0.0953 126 0.39 49
GU.EQUI.HHZ. 2021-03-06T03:39:31.41 0.3 negative manual P 118 0.1286 119 0.22 76
GU.FIVI.HNZ. 2021-03-06T03:39:30.85 0.1 undecidable manual P 83 0.0953 126 0.28 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.FIVI.HNN. ML:2.6 0.005565403 0.2 AML other m 2021-03-06T03:39:32.96
GU.FIVI.HNE. ML:2.6 0.0062170045 0.28 AML other m 2021-03-06T03:39:33.15
GU.EQUI.HHE. ML:2 0.001235 0.18 AML other m 2021-03-06T03:39:33.85
GU.EQUI.HHN. ML:1.6 0.00038232695 0.3008 AML other m 2021-03-06T03:39:35.73
IV.PLMA.HHN. ML:2.4 0.0019329315 0.12 AML other m 2021-03-06T03:39:36.09
IV.PLMA.HHE. ML:2.4 0.001625 0.18 AML other m 2021-03-06T03:39:36.12
GU.GRAM.HHE. ML:2.4 0.00124 0.22 AML other m 2021-03-06T03:39:39.28
GU.GRAM.HHN. ML:2.3 0.001053813 0.3392 AML other m 2021-03-06T03:39:40.01
MN.VLC.HNN. ML:1.7 0.0002202498 0.4992 AML other m 2021-03-06T03:39:41.19
MN.VLC.HHN. ML:1.6 0.0002033793 0.1008 AML other m 2021-03-06T03:39:39.16
GU.CARD.HHE. ML:2 0.0003164942 0.16 AML other m 2021-03-06T03:39:45.12
IV.BDI.HHN. ML:1.8 0.0001505069 0.1184 AML other m 2021-03-06T03:39:48.97
IV.MSSA.HHN. ML:2 0.0003845 0.1 AML other m 2021-03-06T03:39:45.24
MN.VLC.HHE. ML:1.4 0.000122360125 0.24 AML other m 2021-03-06T03:39:39.79
MN.VLC.HNE. ML:1.5 0.000147282215 0.4608 AML other m 2021-03-06T03:39:45.78
IV.MSSA.HHE. ML:2.1 0.00045751685 0.1008 AML other m 2021-03-06T03:39:46.06
GU.CARD.HHN. ML:2 0.0003230677 0.1008 AML other m 2021-03-06T03:39:47.56
IV.BDI.HHE. ML:1.7 0.00012923262 0.1392 AML other m 2021-03-06T03:39:55.63
IV.PII.HHE. ML:2.2 0.0002629778 0.3808 AML other m 2021-03-06T03:39:52.84
IV.PII.HHN. ML:2 0.00018292015 0.2208 AML other m 2021-03-06T03:39:50.47
IV.RONT.HHN. ML:2.3 0.000161 0.56 AML other m 2021-03-06T03:40:10.12
GU.CANO.HHE. ML:2.3 0.0001125 0.42 AML other m 2021-03-06T03:40:12.32
GU.CANO.HHN. ML:2.2 9.29E-5 0.9 AML other m 2021-03-06T03:40:12.01
IV.RONT.HHE. ML:2.3 0.0001582 0.5 AML other m 2021-03-06T03:40:25.64
IV.BDI.HNE. ML:1.9 0.0001964623 0.3104 AML other m 2021-03-06T03:39:56.02
IV.BDI.HNN. ML:1.9 0.00020888385 0.2208 AML other m 2021-03-06T03:39:50.09
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol 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