Earthquake with magnitude of ML 1.3 on date 24-09-2021 and time 01:20:15 (Italy) in region 2 km E Ala (TN)

A magnitude ML 1.3 earthquake occured in region: 2 km E Ala (TN), on

  • 23-09-2021 23:20:15 (UTC)
  • 24-09-2021 01:20:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.757, 11.034 at 13 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
Ala TN 2 8913 8913
Vallarsa TN 7 1395 10308
Avio TN 7 4133 14441
Brentonico TN 9 4015 18456
Mori TN 12 9678 28134
Trambileno TN 13 1452 29586
Erbezzo VR 13 740 30326
Rovereto TN 15 39289 69615
Isera TN 15 2735 72350
Bosco Chiesanuova VR 15 3600 75950
Brentino Belluno VR 16 1395 77345
Sant'Anna d'Alfaedo VR 16 2553 79898
Recoaro Terme VI 16 6453 86351
Ronzo-Chienis TN 16 976 87327
Terragnolo TN 17 716 88043
Ferrara di Monte Baldo VR 17 226 88269
Nogaredo TN 17 2065 90334
Velo Veronese VR 18 770 91104
Malcesine VR 18 3736 94840
Nago-Torbole TN 18 2867 97707
Valli del Pasubio VI 18 3242 100949
Villa Lagarina TN 18 3778 104727
Selva di Progno VR 18 933 105660
Volano TN 18 3169 108829
Posina VI 18 566 109395
Roverè Veronese VR 18 2115 111510
Pomarolo TN 19 2452 113962
Nomi TN 19 1398 115360
Limone sul Garda BS 20 1181 116541

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km S of Trento (117317 inhabitants)
36 Km N of Verona (258765 inhabitants)
46 Km W of Vicenza (112953 inhabitants)
68 Km E of Brescia (196480 inhabitants)
76 Km NW of Padova (210401 inhabitants)
86 Km SW of Bolzano (106441 inhabitants)
95 Km W of Treviso (83731 inhabitants)
96 Km NW of Rovigo (51867 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 1.3 2021-09-23
23:20:15
45.7572 11.0338 13 2021-09-23
23:37:38
Sala Sismica INGV-Roma 95801841
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-23 23:20:15 ± 0.1
Latitude 45.7572 ± 0.0054
Longitude 11.0338 ± 0.0052
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95801841

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 577
Semi-minor axis of confidence ellipse (meter) 229
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 354
Circular confidence region, given by single value of horizontal uncertainty (meter) 580
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.63582
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 95801841
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-23 23:37:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
MN.TRI.HHZ. 2021-09-23T23:21:17.10 3.0 undecidable manual Sg 1.3 0
IV.NARO.HHZ. 2021-09-23T23:21:15.55 3.0 undecidable manual Sg 1.97 0
TV.SF04.EHZ. 2021-09-23T23:21:12.83 3.0 undecidable manual Sn -8.24 0
IV.GIUL.HHZ. 2021-09-23T23:21:04.72 3.0 undecidable manual Pn -6.99 0
IV.CIMA.HNZ. 2021-09-23T23:20:59.94 3.0 undecidable manual Pg 4.43 0
IV.ARRO.EHZ. 2021-09-23T23:20:59.46 3.0 positive manual Pg 2.27 0
NI.VINO.HHZ. 2021-09-23T23:20:41.50 3.0 undecidable manual Pg -2.18 0
ST.ZIAN.EHZ. 2021-09-23T23:20:36.12 0.3 undecidable manual S 35 0.6358 92 -0.35 86
IV.MSSA.HHZ. 2021-09-23T23:20:30.75 3.0 undecidable manual Pn 1.59 0
ST.ZIAN.EHZ. 2021-09-23T23:20:28.23 1.0 undecidable manual P 35 0.6358 92 0.76 26
ST.RONC.EHZ. 2021-09-23T23:20:28.55 0.3 undecidable manual S 308 0.3624 94 0.17 97
IV.MAGA.HHZ. 2021-09-23T23:20:25.81 0.3 undecidable manual S 274 0.2833 95 -0.22 94
ST.DOSS.HHZ. 2021-09-23T23:20:22.34 0.6 undecidable manual S 41 0.1637 106 -0.2 65
OX.MARN.HHZ. 2021-09-23T23:20:22.40 0.6 undecidable manual S 134 0.1718 104 -0.36 63
ST.RONC.EHZ. 2021-09-23T23:20:22.93 1.0 positive manual P 308 0.3624 94 0.14 32
OX.BALD.HHE. 2021-09-23T23:20:22.37 0.6 undecidable manual S 244 0.1673 105 -0.28 63
ST.VARA.EHZ. 2021-09-23T23:20:21.13 0.3 undecidable manual S 306 0.1178 119 -0.15 98
IV.MAGA.HHZ. 2021-09-23T23:20:21.54 1.0 undecidable manual P 274 0.2833 95 0.1 33
IV.MBAL.EHZ. 2021-09-23T23:20:21.52 0.6 undecidable manual S 244 0.1358 113 -0.24 64
IV.FERS.EHZ. 2021-09-23T23:20:21.49 3.0 negative manual P -5.24 0
IV.MBAL.EHZ. 2021-09-23T23:20:19.20 0.3 undecidable manual P 244 0.1358 113 0.23 100
OX.BALD.HHE. 2021-09-23T23:20:19.53 0.6 undecidable manual P 244 0.1673 105 0.05 68
ST.DOSS.HHZ. 2021-09-23T23:20:19.81 1.0 negative manual P 41 0.1637 106 0.39 32
OX.MARN.HHZ. 2021-09-23T23:20:19.92 0.3 positive manual P 134 0.1718 104 0.37 96
ST.VARA.EHZ. 2021-09-23T23:20:19.03 0.6 negative manual P 306 0.1178 119 0.34 66
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MBAL.EHE. ML:1.2 0.0001425 0.08 AML other m 2021-09-23T23:20:21.94
IV.MBAL.EHN. ML:1.2 0.0001445 0.06 AML other m 2021-09-23T23:20:22.04
OX.MARN.HHE. ML:1.1 9.515E-5 1.66 AML other m 2021-09-23T23:20:22.95
OX.MARN.HHN. ML:1.2 0.00011 1.02 AML other m 2021-09-23T23:20:23.57
IV.NARO.HHE. ML:1.8 1.006E-5 0.42 AML other m 2021-09-23T23:21:01.59
IV.NARO.HHN. ML:1.8 1.115E-5 1.58 AML other m 2021-09-23T23:21:34.12
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