Earthquake with magnitude of ML 0.1 on date 19-08-2021 and time 19:19:23 (UTC) in region 6 km NE Bormio (SO)

A magnitude ML 0.1 earthquake occured in region: 6 km NE Bormio (SO), on

  • 19-08-2021 19:19:23 (UTC)
  • 19-08-2021 21:19:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.515, 10.409 at 6 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
Bormio SO 6 4121 4121
Valfurva SO 6 2638 6759
Valdidentro SO 9 4125 10884
Valdisotto SO 10 3556 14440
Stelvio BZ 14 1161 15601
Tubre BZ 15 977 16578
Prato allo Stelvio BZ 18 3474 20052

Municipalities with at least 50000 inhabitants

An earthquake occurred to
73 Km W of Bolzano (106441 inhabitants)
74 Km NW of Trento (117317 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 0.1 2021-08-19
19:19:23
46.5153 10.4088 6 2021-08-19
19:33:18
Sala Sismica INGV-Roma 94386531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-19 19:19:23 ± 0.27
Latitude 46.5153 ± 0.0081
Longitude 10.4088 ± 0.0105
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 94386531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 778
Semi-minor axis of confidence ellipse (meter) 579
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 314
Circular confidence region, given by single value of horizontal uncertainty (meter) 780
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.28419
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.1

Field Value
Value 0.1
Uncertainty 0.2
Num. used stations 5
Type of magnitude ML
Reference to an origin 94386531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-19 19:33:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ZONE.HHZ. 2021-08-19T19:19:38.06 3.0 positive manual P -0.23 0
ST.CARE.EHZ. 2021-08-19T19:19:31.47 0.3 undecidable manual S 115 0.2158 103 -0.62 63
CH.FUORN.HHZ. 2021-08-19T19:19:29.10 0.1 undecidable manual S 316 0.1448 110 -0.35 92
CH.BERNI.HHZ. 2021-08-19T19:19:29.76 0.1 undecidable manual P 249 0.2842 100 -0.19 92
SI.MOSI.HHZ. 2021-08-19T19:19:29.03 0.3 undecidable manual S 44 0.1394 110 -0.23 71
ST.CARE.EHZ. 2021-08-19T19:19:28.45 0.1 undecidable manual P 115 0.2158 103 -0.02 97
SI.MOSI.HHZ. 2021-08-19T19:19:27.61 0.1 undecidable manual P 44 0.1394 110 0.77 80
IV.BRMO.HHZ. 2021-08-19T19:19:26.13 0.1 undecidable manual S 213 0.0468 138 -0.08 99
IV.BORM.HNE. 2021-08-19T19:19:26.31 0.1 undecidable manual S 206 0.0513 135 -0.02 100
CH.FUORN.HHZ. 2021-08-19T19:19:26.97 0.1 undecidable manual P 316 0.1448 110 0.02 98
IV.BRMO.HHZ. 2021-08-19T19:19:25.31 0.1 undecidable manual P 213 0.0468 138 0.24 96
IV.BORM.HNE. 2021-08-19T19:19:25.42 0.1 undecidable manual P 206 0.0513 135 0.28 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
CH.FUORN.HHN. ML:0.4 2.48E-5 0.18 AML other m 2021-08-19T19:19:29.62
CH.FUORN.HHE. ML:0.3 2.21E-5 0.86 AML other m 2021-08-19T19:19:30.56
IV.BRMO.HHE. ML:0 0.00015441355 0.1792 AML other m 2021-08-19T19:19:26.25
IV.BRMO.HHN. ML:0 6.577824E-5 0.1792 AML other m 2021-08-19T19:19:26.32
ST.CARE.EHE. ML:-0.1 7.1417505E-6 0.128 AML other m 2021-08-19T19:19:31.97
CH.BERNI.HHE. ML:0 6.326709E-6 0.0896 AML other m 2021-08-19T19:19:34.32
CH.BERNI.HHN. ML:0 5.260757E-6 0.2176 AML other m 2021-08-19T19:19:36.31
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