Earthquake with magnitude of ML 1.6 on date 08-04-2021 and time 10:16:36 (Italy) in region 1 km SE Bastia Umbra (PG)

A magnitude ML 1.6 earthquake occured in region: 1 km SE Bastia Umbra (PG), on

  • 08-04-2021 08:16:36 (UTC)
  • 08-04-2021 10:16:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0640, 12.5550 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Bastia Umbra PG 1 21874 21874
Assisi PG 5 28299 50173
Bettona PG 8 4367 54540
Cannara PG 8 4305 58845
Torgiano PG 11 6725 65570
Valfabbrica PG 11 3389 68959
Spello PG 12 8645 77604
Deruta PG 14 9669 87273
Perugia PG 14 166134 253407
Bevagna PG 15 5081 258488
Valtopina PG 16 1398 259886
Foligno PG 17 57155 317041
Gualdo Cattaneo PG 17 6155 323196
Nocera Umbra PG 20 5839 329035

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km E of Perugia (166134 inhabitants)
17 Km NW of Foligno (57155 inhabitants)
56 Km N of Terni (111501 inhabitants)
71 Km SE of Arezzo (99543 inhabitants)
81 Km NE of Viterbo (67173 inhabitants)
95 Km SW of Fano (60888 inhabitants)
99 Km SW of Pesaro (94582 inhabitants)
99 Km SW of Ancona (100861 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 1.6 2021-04-08
08:16:36
43.0643 12.5552 8 2021-07-12
16:55:13
Bollettino Sismico Italiano INGV 90691951
Reviewed
Rev100
ML 1.7 2021-04-08
08:16:36
43.0612 12.561 9 2021-04-08
08:28:32
Sala Sismica INGV-Roma 88911781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-08 08:16:36 ± 0.05
Latitude 43.0643 ± 0.0027
Longitude 12.5552 ± 0.0037
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90691951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 252
Semi-minor axis of confidence ellipse (meter) 232
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 216
Circular confidence region, given by single value of horizontal uncertainty (meter) 250.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 57
Number of defining phases 56
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.70687
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 31
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 43
Type of magnitude ML
Reference to an origin 90691951
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-01 11:28:14

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 88911781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-08 08:28:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SACS.HHZ. 2021-04-08T08:16:55.44 0.3 undecidable manual S 246 57.5979 50 0.63 61
IV.NARO.HHZ. 2021-04-08T08:16:55.64 0.3 undecidable manual S 2 60.6948 50 0.01 71
IV.EL6.EHZ. 2021-04-08T08:16:54.07 0.3 undecidable manual S 56 53.1024 50 0.47 65
IV.CSP1.EHZ. 2021-04-08T08:16:53.82 0.3 undecidable manual S 86 52.7028 50 0.31 68
IV.PIEI.HHZ. 2021-04-08T08:16:53.65 0.3 undecidable manual S 358 52.3032 50 0.25 69
IV.FRON.EHZ. 2021-04-08T08:16:53.19 0.3 undecidable manual S 15 52.1034 50 -0.17 70
IV.ATPC.HHE. 2021-04-08T08:16:52.15 0.3 undecidable manual S 350 46.8198 50 0.2 70
IV.SSFR.HHZ. 2021-04-08T08:16:51.33 0.3 undecidable manual S 24 45.1215 50 -0.16 71
IV.ATBU.EHZ. 2021-04-08T08:16:51.74 0.3 undecidable manual S 359 45.621 50 0.12 71
IV.ATPI.EHE. 2021-04-08T08:16:51.17 0.3 undecidable manual S 344 44.622 50 -0.17 71
IV.MGAB.HHZ. 2021-04-08T08:16:50.15 0.3 undecidable manual S 245 39.7269 50 0.12 72
IV.FDMO.HHZ. 2021-04-08T08:16:50.72 0.3 undecidable manual S 94 43.2234 50 -0.26 70
IV.CRE.HHZ. 2021-04-08T08:16:50.82 0.3 undecidable manual P 322 78.4659 50 0.63 59
IV.ATSC.EHE. 2021-04-08T08:16:50.51 0.3 undecidable manual S 15 41.3253 50 0.05 73
IV.MF5.EHZ. 2021-04-08T08:16:50.00 0.6 undecidable manual P 96 73.8705 50 0.52 41
IV.PARC.HHZ. 2021-04-08T08:16:49.26 0.3 undecidable manual P 339 69.6747 50 0.43 64
IT.MTCL.HGZ. 2021-04-08T08:16:49.27 0.6 undecidable manual S 102 36.8298 50 -0.01 49
IV.ATMI.HHZ. 2021-04-08T08:16:49.97 0.3 undecidable manual S 322 37.9287 50 0.42 68
IV.MML1.HNE. 2021-04-08T08:16:48.23 0.3 undecidable manual S 81 34.1436 103 -0.2 72
IV.ATFO.HHZ. 2021-04-08T08:16:48.26 0.3 undecidable manual S 2 33.5442 103 0.04 74
IV.FOSV.EHZ. 2021-04-08T08:16:47.32 0.3 undecidable manual S 33 30.5472 104 0.12 73
IV.SACS.HHZ. 2021-04-08T08:16:47.12 0.3 undecidable manual P 246 57.5979 50 0.15 69
IV.MOMA.HHZ. 2021-04-08T08:16:46.94 0.3 undecidable manual S 178 28.9488 105 0.28 71
IV.NARO.HHZ. 2021-04-08T08:16:46.70 0.3 undecidable manual P 2 60.6948 50 -0.75 58
IV.CAFI.HHZ. 2021-04-08T08:16:46.80 0.3 undecidable manual P 302 55.9995 50 0.08 71
IV.CSP1.EHZ. 2021-04-08T08:16:46.04 0.1 undecidable manual P 86 52.7028 50 -0.18 93
IV.ATVA.EHE. 2021-04-08T08:16:46.90 0.3 undecidable manual S 318 32.2455 104 -0.89 57
IV.PIEI.HHZ. 2021-04-08T08:16:46.08 0.1 undecidable manual P 358 52.3032 50 -0.08 95
IV.ATLO.EHE. 2021-04-08T08:16:46.70 0.3 undecidable manual S 337 30.2475 105 -0.42 69
IV.CESI.HHZ. 2021-04-08T08:16:46.73 0.3 undecidable manual S 103 29.0487 105 0.01 75
IV.EL6.EHZ. 2021-04-08T08:16:46.15 0.1 undecidable manual P 56 53.1024 50 -0.13 94
IV.GAVE.EHZ. 2021-04-08T08:16:45.16 3.0 undecidable manual S 0
IV.FRON.EHZ. 2021-04-08T08:16:45.85 0.1 undecidable manual P 15 52.1034 50 -0.28 91
IV.ATBU.EHZ. 2021-04-08T08:16:45.18 0.1 undecidable manual P 359 45.621 50 0.05 97
IV.ATPI.EHE. 2021-04-08T08:16:45.06 0.6 undecidable manual P 344 44.622 50 0.09 48
IV.CESX.HHE. 2021-04-08T08:16:45.44 0.3 undecidable manual P 177 50.616 50 -0.46 66
IV.ATPC.HHE. 2021-04-08T08:16:45.19 0.1 undecidable manual P 350 46.8198 50 -0.13 95
IV.ATSC.EHE. 2021-04-08T08:16:44.31 0.3 undecidable manual P 15 41.3253 50 -0.15 72
IV.MGAB.HHZ. 2021-04-08T08:16:44.05 0.1 undecidable manual P 245 39.7269 50 -0.16 95
IV.MURB.HNZ. 2021-04-08T08:16:44.87 0.3 undecidable manual S 354 22.1556 109 0.44 70
IV.FDMO.HHZ. 2021-04-08T08:16:44.52 0.1 undecidable manual P 94 43.2234 50 -0.24 93
IV.SSFR.HHZ. 2021-04-08T08:16:44.82 0.1 negative manual P 24 45.1215 50 -0.23 93
IV.ATMI.HHZ. 2021-04-08T08:16:43.88 0.1 undecidable manual P 322 37.9287 50 -0.05 98
IV.MML1.HNE. 2021-04-08T08:16:43.12 0.1 positive manual P 81 34.1436 103 -0.17 96
IT.MTCL.HGZ. 2021-04-08T08:16:43.67 0.3 undecidable manual P 102 36.8298 50 -0.11 73
IV.ATFO.HHZ. 2021-04-08T08:16:43.16 0.1 undecidable manual P 2 33.5442 103 -0.01 99
IV.ATLO.EHE. 2021-04-08T08:16:42.31 0.1 undecidable manual P 337 30.2475 105 -0.22 96
IV.CESI.HHZ. 2021-04-08T08:16:42.22 0.1 undecidable manual P 103 29.0487 105 -0.08 99
IV.ATCC.EHZ. 2021-04-08T08:16:42.68 0.3 undecidable manual S 27 15.0738 118 0.52 69
IV.MOMA.HHZ. 2021-04-08T08:16:42.29 0.1 undecidable manual P 178 28.9488 105 0.02 100
IV.FOSV.EHZ. 2021-04-08T08:16:42.41 0.1 undecidable manual P 33 30.5472 104 -0.17 97
IV.ATVA.EHE. 2021-04-08T08:16:42.71 0.3 undecidable manual P 318 32.2455 104 -0.21 72
IT.GNU.HGZ. 2021-04-08T08:16:41.79 0.6 undecidable manual P 178 28.9488 105 -0.48 45
IV.MURB.HNZ. 2021-04-08T08:16:41.19 0.1 positive manual P 354 22.1556 109 0.21 97
IV.ASSB.HHZ. 2021-04-08T08:16:40.52 0.3 undecidable manual S 106 8.6802 132 0.18 75
IV.ATCC.EHZ. 2021-04-08T08:16:39.99 0.1 positive manual P 27 15.0738 118 0.32 96
IV.ASSB.HHZ. 2021-04-08T08:16:38.91 0.1 undecidable manual P 106 8.6802 132 0.29 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHN. ML:1.8 0.001099 0.08 AML other m 2021-04-08T08:16:40.68
IV.ASSB.HHE. ML:1.5 0.00052969105 0.1216 AML other m 2021-04-08T08:16:41.91
IV.ATCC.EHE. ML:2.3 0.001885 0.34 AML other m 2021-04-08T08:16:43.29
IV.ATCC.EHN. ML:2.3 0.0019399999999999999 0.32 AML other m 2021-04-08T08:16:43.45
IV.CESI.HHE. ML:1.3 0.0000926934 0.2752 AML other m 2021-04-08T08:16:47.52
IV.FOSV.EHN. ML:1.6 0.00020800000000000001 0.12 AML other m 2021-04-08T08:16:47.83
IV.MOMA.HHE. ML:1.5 0.0001806546 0.2624 AML other m 2021-04-08T08:16:47.88
IV.FOSV.EHE. ML:1.6 0.00017403649999999998 0.2816 AML other m 2021-04-08T08:16:48.07
IV.CESI.HHN. ML:1.4 0.00011496915 0.2816 AML other m 2021-04-08T08:16:48.37
IV.ATFO.HHN. ML:1.7 0.00023719895 0.2048 AML other m 2021-04-08T08:16:48.87
IV.ATFO.HHE. ML:1.7 0.00020723415 0.1216 AML other m 2021-04-08T08:16:49.18
IV.MOMA.HHN. ML:1.5 0.00017299999999999998 0.2 AML other m 2021-04-08T08:16:49.45
IV.MGAB.HHE. ML:1.8 0.00020999999999999998 0.36 AML other m 2021-04-08T08:16:50.94
IV.MGAB.HNN. ML:1.9 0.0002723544 0.1408 AML other m 2021-04-08T08:16:51.16
IV.MGAB.HHN. ML:1.9 0.00028149999999999996 0.16 AML other m 2021-04-08T08:16:51.23
IV.MGAB.HNE. ML:1.7 0.00018947 0.16 AML other m 2021-04-08T08:16:51.57
IV.ATMI.HHN. ML:1.9 0.00028649999999999997 0.32 AML other m 2021-04-08T08:16:51.59
IV.SSFR.HNE. ML:2.2 0.0005335 1.8 AML other m 2021-04-08T08:16:51.02
IV.SSFR.HHE. ML:2.3 0.000629 1.8 AML other m 2021-04-08T08:16:51.03
IV.FDMO.HHN. ML:1.4 0.00008106396999999999 0.1408 AML other m 2021-04-08T08:16:52.18
IV.SSFR.HHN. ML:1.9 0.00024219889999999998 0.1024 AML other m 2021-04-08T08:16:52.20
IV.FDMO.HHE. ML:1.4 0.00008475418 0.16 AML other m 2021-04-08T08:16:52.29
IV.SSFR.HNN. ML:2.0 0.00030201604999999997 0.1408 AML other m 2021-04-08T08:16:52.86
IV.FRON.EHE. ML:1.6 0.000096368555 0.2432 AML other m 2021-04-08T08:16:53.75
IV.ATMI.HHE. ML:1.8 0.00023526040000000002 0.32 AML other m 2021-04-08T08:16:53.91
IV.PIEI.HHN. ML:1.6 0.00010334999999999999 0.28 AML other m 2021-04-08T08:16:54.44
IV.FRON.EHN. ML:1.7 0.00012164585 0.2816 AML other m 2021-04-08T08:16:54.25
IV.CSP1.EHE. ML:1.8 0.000155710815 0.2752 AML other m 2021-04-08T08:16:54.82
IV.CSP1.EHN. ML:2.0 0.00023999999999999998 0.16 AML other m 2021-04-08T08:16:54.88
IV.EL6.EHN. ML:1.8 0.000141361265 0.1792 AML other m 2021-04-08T08:16:55.15
IV.EL6.EHE. ML:2.0 0.0002165 0.16 AML other m 2021-04-08T08:16:55.60
IV.CAFI.HHE. ML:1.3 0.00004576486 0.2048 AML other m 2021-04-08T08:16:55.89
IV.PIEI.HHE. ML:1.6 0.00010305 0.14 AML other m 2021-04-08T08:16:55.98
IV.CAFI.HHN. ML:1.2 0.000036953600000000005 0.2816 AML other m 2021-04-08T08:16:56.37
IV.SACS.HHN. ML:1.5 0.0000702 0.42 AML other m 2021-04-08T08:16:56.49
IV.CAFI.HNE. ML:1.6 0.00009706369 0.48 AML other m 2021-04-08T08:16:56.58
IV.NARO.HHE. ML:1.3 0.000041999700000000004 0.1984 AML other m 2021-04-08T08:16:56.98
IV.NARO.HHN. ML:1.1 0.000025071787500000002 0.1216 AML other m 2021-04-08T08:16:57.34
IV.SACS.HHE. ML:1.1 0.00003228387 0.2624 AML other m 2021-04-08T08:16:56.66
IV.PARC.HHN. ML:1.4 0.00004035 0.7 AML other m 2021-04-08T08:17:01.43
IV.CRE.HHE. ML:1.2 0.00002219635 0.3776 AML other m 2021-04-08T08:17:02.79
IV.PARC.HHE. ML:1.2 0.000031755355 0.4992 AML other m 2021-04-08T08:17:03.64
IV.CRE.HHN. ML:1.3 0.00003116215 0.2368 AML other m 2021-04-08T08:17:04.39
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