Earthquake with magnitude of ML 0.8 on date 31-10-2021 and time 04:31:36 (UTC) in region 1 km SW Calliano (TN)

A magnitude ML 0.8 earthquake occured in region: 1 km SW Calliano (TN), on

  • 31-10-2021 04:31:36 (UTC)
  • 31-10-2021 05:31:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.9300, 11.0920 at 9 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
Calliano TN 1 1807 1807
Nomi TN 2 1398 3205
Besenello TN 2 2654 5859
Volano TN 3 3169 9028
Pomarolo TN 4 2452 11480
Villa Lagarina TN 5 3778 15258
Aldeno TN 5 3059 18317
Nogaredo TN 6 2065 20382
Cimone TN 6 728 21110
Rovereto TN 6 39289 60399
Folgaria TN 6 3191 63590
Trambileno TN 7 1452 65042
Terragnolo TN 7 716 65758
Isera TN 8 2735 68493
Garniga Terme TN 8 388 68881
Ronzo-Chienis TN 12 976 69857
Cavedine TN 12 2987 72844
Altopiano della Vigolana TN 12 4942 77786
Drena TN 12 570 78356
Mori TN 12 9678 88034
Madruzzo TN 13 2884 90918
Lavarone TN 14 1138 92056
Lastebasse VI 14 208 92264
Calceranica al Lago TN 14 1387 93651
Dro TN 14 4944 98595
Caldonazzo TN 15 3631 102226
Trento TN 16 117317 219543
Arco TN 16 17526 237069
Brentonico TN 16 4015 241084
Vallarsa TN 16 1395 242479
Tenna TN 17 993 243472
Pedemonte VI 17 774 244246
Nago-Torbole TN 18 2867 247113
Vallelaghi TN 18 5044 252157
Luserna TN 18 276 252433
Laghi VI 18 133 252566
Pergine Valsugana TN 19 21280 273846
Levico Terme TN 19 7915 281761
Civezzano TN 19 4002 285763
Vignola-Falesina TN 19 162 285925

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km S of Trento (117317 inhabitants)
55 Km N of Verona (258765 inhabitants)
55 Km NW of Vicenza (112953 inhabitants)
67 Km SW of Bolzano (106441 inhabitants)
80 Km NE of Brescia (196480 inhabitants)
84 Km NW of Padova (210401 inhabitants)
94 Km W of Treviso (83731 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
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.8 2021-10-31
04:31:36
45.9302 11.0923 9 2021-10-31
04:39:09
Sala Sismica INGV-Roma 97104131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-31 04:31:36 ± 0.13
Latitude 45.9302 ± 0.0072
Longitude 11.0923 ± 0.0078
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97104131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 655
Semi-minor axis of confidence ellipse (meter) 556
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 22
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 89
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.28329
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 97104131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-31 04:39:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VCRE.HHZ. 2021-10-31T04:33:05.38 3.0 undecidable manual Pg 12.84 0
IV.MMO1.EHZ. 2021-10-31T04:33:00.60 3.0 undecidable manual Sn -2.95 0
IV.MTMR.EHZ. 2021-10-31T04:32:57.06 3.0 undecidable manual Pn 2.64 0
IV.SENI.HNZ. 2021-10-31T04:32:48.15 3.0 undecidable manual Sg 1.04 0
IV.RM33.HNZ. 2021-10-31T04:32:37.29 3.0 undecidable manual Pg 11.1 0
IV.CESX.HHZ. 2021-10-31T04:32:25.84 3.0 negative manual Pg 3.78 0
RF.GEPF.HHZ. 2021-10-31T04:31:58.53 3.0 negative manual Pn -3.22 0
ST.VARA.EHZ. 2021-10-31T04:31:43.52 1.0 undecidable manual S 233 0.1718 116 -0.33 24
IV.MBAL.EHN. 2021-10-31T04:31:42.84 0.3 undecidable manual P 215 0.2833 50 -0.13 73
SI.LUSI.HHZ. 2021-10-31T04:31:41.60 0.6 undecidable manual S 286 0.1079 128 -0.15 50
ST.PANI.EHZ. 2021-10-31T04:31:41.31 0.6 undecidable manual P 54 0.2059 112 -0.13 49
ST.VARA.EHZ. 2021-10-31T04:31:41.15 0.6 undecidable manual P 233 0.1718 116 0.42 46
ST.GAGG.HHZ. 2021-10-31T04:31:40.94 0.6 negative manual P 329 0.1790 115 0.05 50
IV.MNTV.EHZ. 2021-10-31T04:31:40.21 3.0 positive manual P -0.15 0
ST.DOSS.HHZ. 2021-10-31T04:31:40.85 0.6 undecidable manual S 126 0.0827 136 -0.2 50
ST.DOSS.HHZ. 2021-10-31T04:31:39.27 0.1 positive manual P 126 0.0827 136 0.15 100
SI.LUSI.HHZ. 2021-10-31T04:31:39.68 1.0 undecidable manual P 286 0.1079 128 0.16 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
ST.DOSS.HHE. ML:1.0 0.000141 0.08 AML other m 2021-10-31T04:31:40.95
ST.DOSS.HHN. ML:0.6 0.00005602393 0.1824 AML other m 2021-10-31T04:31:41.40
SI.LUSI.HHN. ML:0.7 0.00006494999999999999 1.2 AML other m 2021-10-31T04:31:41.74
SI.LUSI.HHE. ML:0.4 0.000031449484999999997 0.08 AML other m 2021-10-31T04:31:42.20
ST.DOSS.HNE. ML:0.7 0.000076596175 0.9216 AML other m 2021-10-31T04:31:44.45
ST.DOSS.HNN. ML:1.0 0.00012927725000000002 0.08 AML other m 2021-10-31T04:31:40.95
IV.MNTV.EHE. ML:2.1 0.00015740329 0.4416 AML other m 2021-10-31T04:31:56.99
IV.MNTV.EHN. ML:2.2 0.000207423725 0.3584 AML other m 2021-10-31T04:32:03.94
ST.GAGG.HHE. ML:0.8 0.000051027814999999994 2.4992 AML other m 2021-10-31T04:32:07.00
ST.GAGG.HHN. ML:0.7 0.00003270179 1.5616 AML other m 2021-10-31T04:32:01.81
ST.GAGG.HNE. ML:1.0 0.00007865440499999999 1.04 AML other m 2021-10-31T04:32:08.39
ST.GAGG.HNN. ML:0.9 0.000056842014999999997 0.7616 AML other m 2021-10-31T04:32:08.07
ST.VARA.EHE. ML:1.0 0.00007793376500000001 0.08 AML other m 2021-10-31T04:31:44.11
ST.VARA.EHN. ML:0.3 0.000017281657499999998 0.8384 AML other m 2021-10-31T04:31:56.08
ST.VARA.HNE. ML:0.9 0.00006415121999999999 0.5376 AML other m 2021-10-31T04:31:53.47
ST.VARA.HNN. ML:1.0 0.000076484625 0.4992 AML other m 2021-10-31T04:31:51.45
ST.PANI.EHE. ML:0.7 0.0000301571045 2.64 AML other m 2021-10-31T04:32:03.90
ST.PANI.EHN. ML:0.7 0.0000279871785 1.6608 AML other m 2021-10-31T04:32:06.84
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, http://terremoti.ingv.it/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