Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 31-08-2021 and time 17:30:19 (Italy) in region 5 km E Cortina d'Ampezzo (BL)

A magnitude ML 1.7 earthquake occured in region: 5 km E Cortina d'Ampezzo (BL), on

  • 31-08-2021 15:30:19 (UTC)
  • 31-08-2021 17:30:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.5530, 12.2070 at 8 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
Cortina d'Ampezzo BL 5 5907 5907
San Vito di Cadore BL 10 1857 7764
Borca di Cadore BL 13 781 8545
Vodo Cadore BL 15 853 9398
Selva di Cadore BL 17 520 9918
Valle di Cadore BL 18 1964 11882
Calalzo di Cadore BL 18 2085 13967
Auronzo di Cadore BL 18 3350 17317
Zoppè di Cadore BL 19 229 17546
Colle Santa Lucia BL 19 360 17906
Pieve di Cadore BL 19 3794 21700
Cibiana di Cadore BL 19 393 22093
Domegge di Cadore BL 19 2441 24534
Braies BZ 19 652 25186
Lozzo di Cadore BL 20 1383 26569
Sesto BZ 20 1893 28462

Municipalities with at least 50000 inhabitants

An earthquake occurred to
65 Km E of Bolzano (106441 inhabitants)
75 Km NW of Pordenone (51229 inhabitants)
96 Km NW of Udine (99169 inhabitants)
98 Km N of Treviso (83731 inhabitants)
99 Km NE of Trento (117317 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 1.7 2021-08-31
15:30:19		 46.5532 12.2067 8 2021-12-29
11:12:52		 Bollettino Sismico Italiano INGV 97525011
Reviewed
Rev100 		ML 1.7 2021-08-31
15:30:19		 46.5595 12.2112 11 2021-08-31
15:42:41		 Sala Sismica INGV-Roma 94877251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-31 15:30:19 ± 0.18
Latitude 46.5532 ± 0.0081
Longitude 12.2067 ± 0.0052
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 97525011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 641
Semi-minor axis of confidence ellipse (meter) 582
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 181
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 61
Number of defining phases 48
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.34089
Number of stations at which the event was observed 42
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 97525011
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-14 11:48:51

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 46
Type of magnitude ML
Reference to an origin 94877251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-31 15:42:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MML1.EHZ. 2021-08-31T15:32:08.27 3.0 undecidable manual Sg 10.91 0
IV.AGLI.HHZ. 2021-08-31T15:32:06.22 3.0 undecidable manual Pg 19.459999 0
IV.MTMR.HNZ. 2021-08-31T15:32:00.12 3.0 undecidable manual Pg 11.6 0
IV.MF5.EHZ. 2021-08-31T15:31:57.81 3.0 undecidable manual Sn -4.21 0
IV.MNTT.EHZ. 2021-08-31T15:31:56.60 3.0 undecidable manual Sn -4.27 0
GU.GSCL.HHZ. 2021-08-31T15:31:33.65 3.0 undecidable manual Sn 0.73 0
GU.IMI.HHZ. 2021-08-31T15:31:30.91 3.0 positive manual Pg 9.2 0
IV.ZCCA.HNZ. 2021-08-31T15:31:30.68 3.0 undecidable manual Sn 0.5 0
IV.LPEL.HHZ. 2021-08-31T15:31:30.23 3.0 positive manual Pn -0.98 0
IV.MMO1.EHZ. 2021-08-31T15:31:18.66 3.0 negative manual Pn 0.93 0
IV.SARZ.HHZ. 2021-08-31T15:31:08.13 3.0 negative manual Pn 2.6 0
IV.EUCT.HNZ. 2021-08-31T15:31:00.77 3.0 negative manual Pn -0.31 0
IV.MABI.HHZ. 2021-08-31T15:31:00.60 0.6 undecidable manual S 248 140.9478 50 0.33 41
ST.GAGG.HHZ. 2021-08-31T15:30:52.20 0.6 undecidable manual S 242 108.9132 50 0.5 42
IV.NDIM.HNZ. 2021-08-31T15:30:50.97 3.0 negative manual Pn -1.57 0
ST.OZOL.EHZ. 2021-08-31T15:30:46.50 0.6 undecidable manual S 260 89.7435 50 -0.1 47
ST.PANI.EHZ. 2021-08-31T15:30:45.40 0.6 undecidable manual S 230 87.1461 50 -0.49 44
IV.MAGA.HHZ. 2021-08-31T15:30:45.46 0.6 undecidable manual P 235 148.8399 50 1.24 28
IV.MBAL.EHZ. 2021-08-31T15:30:44.13 0.6 undecidable manual P 228 140.5482 50 1.19 29
IV.MABI.HHZ. 2021-08-31T15:30:43.48 0.3 undecidable manual P 248 140.9478 50 0.47 59
IV.APPI.EHZ. 2021-08-31T15:30:41.60 0.6 undecidable manual S 264 75.1692 50 -1.1 35
OX.SABO.HHZ. 2021-08-31T15:30:41.97 0.6 undecidable manual P 119 126.1737 50 1.24 29
OX.PLRO.HHZ. 2021-08-31T15:30:41.80 0.6 undecidable manual S 90 71.8725 50 -0.01 50
SI.LUSI.HHZ. 2021-08-31T15:30:39.98 0.3 undecidable manual P 236 117.0939 50 0.64 58
OX.FUSE.HHZ. 2021-08-31T15:30:39.50 0.6 undecidable manual S 104 62.5929 50 0.15 49
SI.KOSI.HHZ. 2021-08-31T15:30:39.60 0.6 undecidable manual S 261 64.0914 50 -0.14 49
OX.VARN.HHZ. 2021-08-31T15:30:39.80 0.6 undecidable manual S 187 62.6928 50 0.42 47
ST.GAGG.HHZ. 2021-08-31T15:30:38.84 0.3 undecidable manual P 242 108.9132 50 0.77 56
ST.ZIAN.EHZ. 2021-08-31T15:30:37.50 0.6 undecidable manual S 238 57.9975 50 -0.62 44
OX.MLN.HHE. 2021-08-31T15:30:37.50 0.6 undecidable manual S 145 54.6009 50 0.28 49
OX.CLUD.HHN. 2021-08-31T15:30:36.70 0.3 undecidable manual S 101 52.6029 50 0.01 78
ST.OZOL.EHZ. 2021-08-31T15:30:35.37 0.3 undecidable manual P 260 89.7435 50 0.25 69
IV.STAL.HHE. 2021-08-31T15:30:35.80 0.6 undecidable manual S 130 50.4162 50 -0.3 49
OE.WTTA.HHZ. 2021-08-31T15:30:35.74 0.3 undecidable manual P 331 89.9433 50 0.6 63
ST.PANI.EHZ. 2021-08-31T15:30:34.96 0.3 undecidable manual P 230 87.1461 50 0.25 69
NI.PURA.HHZ. 2021-08-31T15:30:33.60 0.6 undecidable manual S 109 43.2234 50 -0.58 46
IV.FVI.HHZ. 2021-08-31T15:30:33.80 0.6 undecidable manual S 84 44.0226 50 -0.59 46
OX.PLRO.HHZ. 2021-08-31T15:30:32.33 0.3 undecidable manual P 90 71.8725 50 -0.03 75
SI.ROSI.HHE. 2021-08-31T15:30:32.87 1.0 undecidable manual P 305 73.371 50 0.28 24
IV.APPI.EHZ. 2021-08-31T15:30:32.92 0.3 undecidable manual P 264 75.1692 50 0.05 74
OX.FUSE.HHZ. 2021-08-31T15:30:31.27 1.0 undecidable manual P 104 62.5929 50 0.34 24
IT.VALS.HNE. 2021-08-31T15:30:31.90 0.6 undecidable manual S 233 39.0276 50 -1.16 36
OX.CAE.HHZ. 2021-08-31T15:30:31.46 1.0 undecidable manual P 164 62.8926 50 0.48 23
SI.ABSI.HHZ. 2021-08-31T15:30:31.89 0.6 undecidable manual P 286 70.2741 50 -0.22 48
OX.MPRI.HHN. 2021-08-31T15:30:31.91 1.0 undecidable manual P 120 69.0753 50 -0.02 25
IV.BRES.EHE. 2021-08-31T15:30:31.30 0.6 undecidable manual S 294 39.4272 50 -1.87 23
NI.PALA.HHZ. 2021-08-31T15:30:31.53 0.3 undecidable manual P 122 64.6908 50 0.28 72
SI.KOSI.HHZ. 2021-08-31T15:30:31.09 0.1 undecidable manual P 261 64.0914 50 -0.07 100
OX.MLN.HHE. 2021-08-31T15:30:30.24 0.3 undecidable manual P 145 54.6009 50 0.53 69
OX.AGOR.HHZ. 2021-08-31T15:30:30.60 0.3 undecidable manual S 202 32.3454 103 -0.38 74
OX.VARN.HHZ. 2021-08-31T15:30:30.81 0.6 undecidable manual P 187 62.6928 50 -0.14 49
ST.ZIAN.EHZ. 2021-08-31T15:30:30.24 0.3 undecidable manual P 238 57.9975 50 0.01 77
OX.CIMO.HHZ. 2021-08-31T15:30:30.40 0.6 undecidable manual S 146 32.4453 103 -0.59 47
OX.CLUD.HHN. 2021-08-31T15:30:29.62 1.0 undecidable manual P 101 52.6029 50 0.23 25
IV.STAL.HHE. 2021-08-31T15:30:28.96 0.3 undecidable manual P 130 50.4162 50 -0.09 77
NI.PURA.HHZ. 2021-08-31T15:30:28.13 0.3 undecidable manual P 109 43.2234 50 0.18 76
IT.VALS.HNE. 2021-08-31T15:30:27.12 0.3 undecidable manual P 233 39.0276 50 -0.18 77
IV.FVI.HHZ. 2021-08-31T15:30:27.62 0.1 undecidable manual P 84 44.0226 50 -0.45 96
IV.BRES.EHE. 2021-08-31T15:30:26.81 0.3 undecidable manual P 294 39.4272 50 -0.56 70
OX.AGOR.HHZ. 2021-08-31T15:30:26.24 0.3 undecidable manual P 202 32.3454 103 0.14 78
OX.CIMO.HHZ. 2021-08-31T15:30:25.71 0.1 undecidable manual P 146 32.4453 103 -0.4 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.CIMO.HNE. ML:1.2 0.00007230000000000001 1.04 AML other m 2021-08-31T15:30:32.19
OX.CIMO.HHE. ML:1.1 0.0000558 0.5 AML other m 2021-08-31T15:30:33.57
IV.FVI.HHE. ML:1.7 0.00017099999999999998 0.14 AML other m 2021-08-31T15:30:33.95
IV.FVI.HHN. ML:1.4 0.00008735 1.54 AML other m 2021-08-31T15:30:34.22
OX.CIMO.HHN. ML:1.0 0.00005095 0.6 AML other m 2021-08-31T15:30:34.35
OX.CIMO.HNN. ML:1.1 0.00006230000000000001 1.38 AML other m 2021-08-31T15:30:36.30
ST.ZIAN.EHE. ML:1.6 0.00008118016 0.256 AML other m 2021-08-31T15:30:40.17
ST.ZIAN.EHN. ML:1.4 0.00005900789500000001 1.6416 AML other m 2021-08-31T15:30:40.92
NI.PALA.HHN. ML:1.8 0.000112 0.48 AML other m 2021-08-31T15:30:42.69
SI.ABSI.HHE. ML:1.9 0.000126 0.64 AML other m 2021-08-31T15:30:42.30
OX.VARN.HNN. ML:1.7 0.00010564999999999999 1 AML other m 2021-08-31T15:30:43.76
OX.VARN.HNE. ML:2.0 0.00021500000000000002 0.66 AML other m 2021-08-31T15:30:44.34
OX.VARN.HHE. ML:2.0 0.0002125 0.66 AML other m 2021-08-31T15:30:44.01
OX.PLRO.HHN. ML:2.1 0.000191 0.68 AML other m 2021-08-31T15:30:44.73
IV.APPI.EHN. ML:1.8 0.0000929 0.3 AML other m 2021-08-31T15:30:44.64
NI.PALA.HHE. ML:1.7 0.0000942 0.54 AML other m 2021-08-31T15:30:44.78
IV.APPI.EHE. ML:1.6 0.00005545 0.12 AML other m 2021-08-31T15:30:44.87
OX.PLRO.HHE. ML:1.7 0.00008485 0.34 AML other m 2021-08-31T15:30:45.25
SI.ABSI.HHN. ML:1.8 0.0001052 0.64 AML other m 2021-08-31T15:30:46.43
ST.PANI.EHE. ML:1.5 0.00003571732 0.1792 AML other m 2021-08-31T15:30:46.29
SI.KOSI.HHE. ML:1.6 0.00007495 0.64 AML other m 2021-08-31T15:30:46.64
OX.VARN.HHN. ML:1.8 0.0001086 0.9 AML other m 2021-08-31T15:30:46.21
SI.KOSI.HHN. ML:1.5 0.000056 0.38 AML other m 2021-08-31T15:30:47.86
ST.PANI.EHN. ML:1.7 0.00006144589500000001 0.256 AML other m 2021-08-31T15:30:49.77
ST.OZOL.EHN. ML:1.9 0.00009335 0.96 AML other m 2021-08-31T15:30:49.31
OE.WTTA.HHE. ML:1.5 0.0000363 0.44 AML other m 2021-08-31T15:30:50.13
OE.WTTA.HHN. ML:1.5 0.000034200000000000005 0.34 AML other m 2021-08-31T15:30:51.22
ST.GAGG.HHE. ML:1.7 0.00004725 0.14 AML other m 2021-08-31T15:30:53.30
ST.GAGG.HHN. ML:1.7 0.000044 0.2 AML other m 2021-08-31T15:30:53.66
ST.OZOL.EHE. ML:2.0 0.0001175 0.88 AML other m 2021-08-31T15:30:57.16
SI.LUSI.HHE. ML:1.9 0.00006345000000000001 0.48 AML other m 2021-08-31T15:30:58.85
SI.LUSI.HHN. ML:2.2 0.000133 0.2 AML other m 2021-08-31T15:31:01.58
OX.SABO.HHE. ML:1.9 0.0000537 0.22 AML other m 2021-08-31T15:31:02.63
IV.MABI.HHE. ML:1.6 0.000020850000000000002 1.38 AML other m 2021-08-31T15:31:02.16
IV.MABI.HHN. ML:1.7 0.000029999999999999997 0.62 AML other m 2021-08-31T15:31:04.41
OX.SABO.HHN. ML:1.9 0.00006110000000000001 0.64 AML other m 2021-08-31T15:31:04.48
IV.MBAL.EHE. ML:2.0 0.000056800000000000005 1.44 AML other m 2021-08-31T15:31:06.02
IV.MBAL.EHN. ML:1.9 0.000046825 0.46 AML other m 2021-08-31T15:31:08.25
IV.MAGA.HHN. ML:2.2 0.00007465 0.46 AML other m 2021-08-31T15:31:08.06
IV.MAGA.HHE. ML:2.4 0.00014299999999999998 0.52 AML other m 2021-08-31T15:31:14.56
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