Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 01-04-2021 and time 18:55:44 (Italy) in region 2 km NW Ala (TN)

A magnitude ML 1.2 earthquake occured in region: 2 km NW Ala (TN), on

  • 01-04-2021 16:55:44 (UTC)
  • 01-04-2021 18:55:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.7700, 10.9940 at 11 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Ala TN 2 8913 8913
Avio TN 6 4133 13046
Brentonico TN 6 4015 17061
Mori TN 9 9678 26739
Vallarsa TN 10 1395 28134
Trambileno TN 13 1452 29586
Isera TN 13 2735 32321
Rovereto TN 14 39289 71610
Ronzo-Chienis TN 14 976 72586
Erbezzo VR 14 740 73326
Malcesine VR 14 3736 77062
Nago-Torbole TN 14 2867 79929
Brentino Belluno VR 15 1395 81324
Ferrara di Monte Baldo VR 15 226 81550
Nogaredo TN 16 2065 83615
Sant'Anna d'Alfaedo VR 16 2553 86168
Limone sul Garda BS 16 1181 87349
Villa Lagarina TN 17 3778 91127
Bosco Chiesanuova VR 17 3600 94727
Volano TN 17 3169 97896
Terragnolo TN 17 716 98612
Riva del Garda TN 18 16926 115538
Pomarolo TN 18 2452 117990
Tremosine sul Garda BS 19 2100 120090
Arco TN 19 17526 137616
Brenzone sul Garda VR 19 2474 140090
Nomi TN 19 1398 141488
Recoaro Terme VI 20 6453 147941
Velo Veronese VR 20 770 148711
Calliano TN 20 1807 150518

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km SW of Trento (117317 inhabitants)
37 Km N of Verona (258765 inhabitants)
50 Km W of Vicenza (112953 inhabitants)
65 Km E of Brescia (196480 inhabitants)
80 Km W of Padova (210401 inhabitants)
86 Km SW of Bolzano (106441 inhabitants)
98 Km W of Treviso (83731 inhabitants)
100 Km NW of Rovigo (51867 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.2 2021-04-01
16:55:44		 45.7702 10.9938 11 2021-07-12
16:55:15		 Bollettino Sismico Italiano INGV 91264321
Reviewed
Rev100 		ML 1.2 2021-04-01
16:55:43		 45.7738 11.01 12 2021-04-01
17:09:50		 Sala Sismica INGV-Roma 88685821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-01 16:55:44 ± 0.11
Latitude 45.7702 ± 0.0072
Longitude 10.9938 ± 0.0064
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91264321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 790
Semi-minor axis of confidence ellipse (meter) 460
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 338
Circular confidence region, given by single value of horizontal uncertainty (meter) 790.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 181
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.31386
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 14
Type of magnitude ML
Reference to an origin 91264321
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-14 10:38:54

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 14
Type of magnitude ML
Reference to an origin 88685821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-01 17:09:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.BLANC.HHZ. 2021-04-01T16:57:07.43 3.0 undecidable manual Sg 29.129999 0
IV.GAVE.EHZ. 2021-04-01T16:56:48.29 3.0 undecidable manual Sn 1.04 0
IV.SCHR.EHZ. 2021-04-01T16:56:44.48 3.0 undecidable manual Pn -6.23 0
IV.ARRO.EHZ. 2021-04-01T16:56:41.68 3.0 undecidable manual Sn -7.35 0
GU.CANO.HHZ. 2021-04-01T16:56:30.82 3.0 undecidable manual Sn -0.4 0
IV.CIGN.HHZ. 2021-04-01T16:56:27.84 3.0 undecidable manual Pn 0.19 0
IV.RMP.HHZ. 2021-04-01T16:56:26.15 3.0 positive manual Pg 9.09 0
IV.MOMA.HHZ. 2021-04-01T16:56:14.94 3.0 undecidable manual Pg 10.85 0
MN.TRI.HHZ. 2021-04-01T16:56:09.93 3.0 undecidable manual Sn -1.1 0
IV.MMO1.EHZ. 2021-04-01T16:56:07.72 3.0 positive manual Pn 2.12 0
IV.CSP1.EHZ. 2021-04-01T16:56:05.76 3.0 negative manual Pg 2.93 0
IV.FDMO.HHZ. 2021-04-01T16:56:04.94 3.0 negative manual Pn 1.94 0
IV.CAFI.HHZ. 2021-04-01T16:56:03.00 3.0 undecidable manual Pg 6.89 0
IV.ARRO.EHZ. 2021-04-01T16:56:01.39 3.0 undecidable manual Pn -6.07 0
IV.ATMI.HHZ. 2021-04-01T16:56:01.88 3.0 negative manual Pg 5.17 0
IV.IMOL.HNZ. 2021-04-01T16:56:01.26 3.0 undecidable manual Sn -5.11 0
IV.ASSB.HHZ. 2021-04-01T16:56:01.22 3.0 undecidable manual Pn -0.18 0
GU.IMI.HHZ. 2021-04-01T16:56:00.83 3.0 undecidable manual Pn -1.53 0
IV.FRON.EHZ. 2021-04-01T16:55:59.21 3.0 positive manual Pg 3.26 0
IV.ATCC.EHZ. 2021-04-01T16:55:59.17 3.0 undecidable manual Pn -0.43 0
IV.NARO.HHZ. 2021-04-01T16:55:59.86 3.0 positive manual Pg 5.51 0
IV.SSFR.HHZ. 2021-04-01T16:55:59.06 3.0 negative manual Pg 1.95 0
IV.PIEI.HHZ. 2021-04-01T16:55:58.61 3.0 negative manual Pg 3.54 0
IV.ATPI.EHZ. 2021-04-01T16:55:57.48 3.0 negative manual P 1.82 0
IV.MURB.HHZ. 2021-04-01T16:55:57.25 3.0 undecidable manual Pn -1.05 0
ST.GAGG.HHZ. 2021-04-01T16:55:55.50 0.6 undecidable manual S 356 34.8429 90 -0.31 46
IV.ATFO.HHZ. 2021-04-01T16:55:55.95 3.0 positive manual P -1.25 0
IV.PE3.EHZ. 2021-04-01T16:55:54.57 3.0 positive manual Pg 1.51 0
IV.MAGA.HHZ. 2021-04-01T16:55:53.88 0.3 undecidable manual S 271 28.2495 90 -0.16 72
IV.ZEN8.EHZ. 2021-04-01T16:55:52.51 0.3 undecidable manual S 234 25.0527 90 -0.67 62
OX.BALD.HHZ. 2021-04-01T16:55:51.06 0.6 undecidable manual S 235 16.6722 90 0.12 50
SI.LUSI.HHZ. 2021-04-01T16:55:51.92 0.3 undecidable manual S 350 21.3675 90 -0.28 72
ST.DOSS.HHZ. 2021-04-01T16:55:50.79 0.3 undecidable manual S 51 19.3695 90 -0.89 58
ST.GAGG.HHZ. 2021-04-01T16:55:50.88 0.1 undecidable manual P 356 34.8429 90 0.05 97
IV.ZEN8.EHZ. 2021-04-01T16:55:49.29 0.1 undecidable manual P 234 25.0527 90 -0.03 99
IV.MBAL.EHZ. 2021-04-01T16:55:49.84 0.6 undecidable manual S 232 13.1757 97 -0.18 49
IV.MAGA.HHZ. 2021-04-01T16:55:49.92 0.1 undecidable manual P 271 28.2495 90 0.11 97
ST.VARA.EHZ. 2021-04-01T16:55:49.45 0.3 undecidable manual S 310 9.7791 121 0.28 72
OX.BALD.HHZ. 2021-04-01T16:55:48.24 0.1 undecidable manual P 235 16.6722 90 0.21 98
ST.DOSS.HHZ. 2021-04-01T16:55:48.80 0.3 undecidable manual P 51 19.3695 90 0.35 70
SI.LUSI.HHZ. 2021-04-01T16:55:48.77 0.1 undecidable manual P 350 21.3675 90 0.02 100
ST.VARA.EHZ. 2021-04-01T16:55:47.44 0.1 undecidable manual P 310 9.7791 121 0.44 93
IV.MBAL.EHZ. 2021-04-01T16:55:47.66 0.1 undecidable manual P 232 13.1757 97 0.17 99
IV.SARZ.HHZ. 2021-04-01T16:55:47.26 3.0 negative manual Pn -0.5 0
IV.SBPO.HNZ. 2021-04-01T16:55:33.59 3.0 negative manual P -2.89 0
IT.PNAL.HNZ. 2021-04-01T16:55:31.90 3.0 undecidable manual P -4.23 0
IV.CTI.HHZ. 2021-04-01T16:55:28.39 3.0 undecidable manual P -4.93 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
ST.VARA.EHN. ML:1.6 0.0004345 0.54 AML other m 2021-04-01T16:55:49.31
ST.VARA.EHE. ML:1.9 0.0009605 0.36 AML other m 2021-04-01T16:55:49.70
IV.MBAL.EHE. ML:1.1 0.000142 0.74 AML other m 2021-04-01T16:55:50.19
IV.MBAL.EHN. ML:1.4 0.0002375 0.1 AML other m 2021-04-01T16:55:50.75
ST.DOSS.HHE. ML:0.8 0.00004865 0.2 AML other m 2021-04-01T16:55:51.75
SI.LUSI.HHE. ML:1.5 0.00022899999999999998 0.34 AML other m 2021-04-01T16:55:52.06
SI.LUSI.HHN. ML:1.8 0.00043149999999999997 0.14 AML other m 2021-04-01T16:55:52.13
ST.DOSS.HHN. ML:0.7 0.00004245 0.74 AML other m 2021-04-01T16:55:52.40
IV.MAGA.HHE. ML:1.1 0.0000648 0.6 AML other m 2021-04-01T16:55:55.61
ST.GAGG.HHN. ML:0.7 0.00001965 1.28 AML other m 2021-04-01T16:55:55.75
ST.GAGG.HHE. ML:0.8 0.0000247 1.24 AML other m 2021-04-01T16:55:55.30
IV.MAGA.HHN. ML:0.8 0.000037 1.38 AML other m 2021-04-01T16:55:56.71
IV.CTI.HHE. ML:1.2 0.0000309 0.6 AML other m 2021-04-01T16:55:57.75
IV.CTI.HHN. ML:1.3 0.000042399999999999994 0.16 AML other m 2021-04-01T16:55:58.35
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download