Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 01-12-2020 and time 18:52:35 (Italy) in region 3 km S Cascia (PG)

A magnitude ML 1.7 earthquake occured in region: 3 km S Cascia (PG), on

  • 01-12-2020 17:52:35 (UTC)
  • 01-12-2020 18:52:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6890, 13.0120 at 10 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
Cascia PG 3 3217 3217
Monteleone di Spoleto PG 6 599 3816
Poggiodomo PG 7 117 3933
Norcia PG 13 4957 8890
Cittareale RI 15 482 9372
Leonessa RI 15 2435 11807
Scheggino PG 15 461 12268
Vallo di Nera PG 15 364 12632
Sant'Anatolia di Narco PG 15 564 13196
Cerreto di Spoleto PG 17 1075 14271
Polino TR 18 233 14504
Accumoli RI 19 667 15171
Ferentillo TR 20 1913 17084
Posta RI 20 694 17778

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Terni (111501 inhabitants)
39 Km SE of Foligno (57155 inhabitants)
49 Km NW of L'Aquila (69753 inhabitants)
57 Km W of Teramo (54892 inhabitants)
69 Km SE of Perugia (166134 inhabitants)
80 Km N of Guidonia Montecelio (88673 inhabitants)
80 Km E of Viterbo (67173 inhabitants)
82 Km N of Tivoli (56533 inhabitants)
95 Km W of Montesilvano (53738 inhabitants)
98 Km NE of Roma (2864731 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 2020-12-01
17:52:35		 42.6887 13.0115 10 2021-02-26
14:56:11		 Bollettino Sismico Italiano INGV 85672051
Reviewed
Rev100 		ML 1.7 2020-12-01
17:52:35		 42.7048 13.0093 10 2020-12-01
18:01:13		 Sala Sismica INGV-Roma 85132531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-01 17:52:35 ± 0.08
Latitude 42.6887 ± 0.0045
Longitude 13.0115 ± 0.0049
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85672051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 477
Semi-minor axis of confidence ellipse (meter) 394
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 183
Circular confidence region, given by single value of horizontal uncertainty (meter) 480.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 55
Number of defining phases 55
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.08813
Epicentral distance of station farthest from the epicenter (degree) 0.82198
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 33
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 32
Type of magnitude ML
Reference to an origin 85672051
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-28 14:35:08

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 39
Type of magnitude ML
Reference to an origin 85132531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-01 18:01:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CING.HNZ. 2020-12-01T17:52:59.82 0.6 undecidable manual S 11 77.6667 50 0.88 36
IV.EL6.EHE. 2020-12-01T17:52:58.36 0.6 undecidable manual S 6 71.4729 50 1.07 33
IV.SNTG.HHE. 2020-12-01T17:52:55.45 0.6 undecidable manual S 355 63.0924 50 0.39 44
IV.MF5.EHZ. 2020-12-01T17:52:52.37 0.6 undecidable manual S 48 49.3173 50 1 36
IV.GUMA.HHZ. 2020-12-01T17:52:52.15 0.6 undecidable manual S 32 49.1175 50 0.82 39
IV.ATVA.EHE. 2020-12-01T17:52:51.78 0.6 undecidable manual P 318 88.0452 50 1.16 31
IV.PF6.EHN. 2020-12-01T17:52:51.78 0.6 undecidable manual S 17 52.0035 50 -0.31 46
IV.ATVO.HHN. 2020-12-01T17:52:51.45 0.6 undecidable manual P 328 91.242 50 0.34 42
IV.TERO.HHZ. 2020-12-01T17:52:50.91 0.6 undecidable manual S 98 48.9177 50 -0.35 46
IV.TB01.DHZ.01 2020-12-01T17:52:50.95 0.6 undecidable manual P 329 89.9433 50 0.04 45
IV.ATSC.EHZ. 2020-12-01T17:52:50.28 0.3 undecidable manual P 342 85.7475 50 0.02 68
IV.CSP1.EHZ. 2020-12-01T17:52:50.68 0.6 undecidable manual S 19 47.4192 50 -0.19 47
IV.MML1.HNE. 2020-12-01T17:52:50.84 0.6 undecidable manual S 356 47.2194 50 0.01 49
IV.ASSB.HHZ. 2020-12-01T17:52:50.88 0.6 undecidable manual S 324 48.618 50 -0.32 46
IV.MGAB.HHZ. 2020-12-01T17:52:49.63 0.6 undecidable manual P 289 77.2671 50 0.66 39
IV.CING.HNZ. 2020-12-01T17:52:49.47 0.6 undecidable manual P 11 77.6667 50 0.45 42
IV.FDMO.HHZ. 2020-12-01T17:52:48.08 0.6 undecidable manual S 9 39.0276 50 -0.57 44
IV.MURB.HHZ. 2020-12-01T17:52:48.85 0.3 undecidable manual P 328 74.9694 50 0.24 67
IT.GNU.HGZ. 2020-12-01T17:52:48.40 0.6 undecidable manual S 290 38.1285 50 0 50
IV.EL6.EHE. 2020-12-01T17:52:48.78 0.6 undecidable manual P 6 71.4729 50 0.72 39
IV.MOMA.HHZ. 2020-12-01T17:52:48.37 0.6 undecidable manual S 290 38.1285 50 -0.03 50
IV.SNTG.HHE. 2020-12-01T17:52:47.06 0.6 undecidable manual P 355 63.0924 50 0.28 45
IV.OFFI.HHE. 2020-12-01T17:52:47.29 0.6 undecidable manual P 63 61.2942 50 0.79 38
IV.MMO1.EHZ. 2020-12-01T17:52:47.12 0.6 undecidable manual S 48 34.743 50 -0.36 47
IV.CESI.HHZ. 2020-12-01T17:52:47.35 0.6 undecidable manual S 346 36.1416 50 -0.51 45
IV.MTRA.EHZ. 2020-12-01T17:52:46.61 0.6 undecidable manual S 76 32.2455 50 -0.22 48
IV.SMA1.EHZ. 2020-12-01T17:52:45.60 0.6 undecidable manual S 104 27.1506 50 0.13 50
IV.MC2.EHZ. 2020-12-01T17:52:45.60 0.6 undecidable manual S 30 28.6491 50 -0.25 48
IV.CSP1.EHZ. 2020-12-01T17:52:44.17 0.6 undecidable manual P 19 47.4192 50 -0.19 47
IV.MML1.HNE. 2020-12-01T17:52:44.24 0.3 undecidable manual P 356 47.2194 50 -0.09 72
IV.ASSB.HHZ. 2020-12-01T17:52:44.14 0.6 undecidable manual P 324 48.618 50 -0.41 45
IV.PF6.EHN. 2020-12-01T17:52:44.60 0.6 undecidable manual P 17 52.0035 50 -0.47 44
IV.GIGS.HHN. 2020-12-01T17:52:44.82 0.6 undecidable manual P 119 52.8027 50 -0.37 45
IV.GUMA.HHZ. 2020-12-01T17:52:44.85 0.6 undecidable manual P 32 49.1175 50 0.23 47
IV.TERO.HHZ. 2020-12-01T17:52:44.24 0.3 undecidable manual P 98 48.9177 50 -0.35 68
IV.MF5.EHZ. 2020-12-01T17:52:44.93 0.6 undecidable manual P 48 49.3173 50 0.28 46
IV.T1299.HNZ. 2020-12-01T17:52:44.26 0.6 undecidable manual S 105 22.8549 113 0.16 50
IV.ARRO.EHZ. 2020-12-01T17:52:43.91 0.6 undecidable manual S 239 23.4543 113 -0.37 47
IV.CAMP.HHZ. 2020-12-01T17:52:42.52 0.6 undecidable manual P 117 36.6411 50 -0.17 48
IV.MMO1.EHZ. 2020-12-01T17:52:42.09 0.3 undecidable manual P 48 34.743 50 -0.31 71
IV.NRCA.HHZ. 2020-12-01T17:52:42.08 0.6 undecidable manual S 27 18.1707 118 -0.53 46
IV.MOMA.HHZ. 2020-12-01T17:52:42.89 0.3 undecidable manual P 290 38.1285 50 -0.04 74
IV.CESI.HHZ. 2020-12-01T17:52:42.32 0.3 undecidable manual P 346 36.1416 50 -0.3 71
IV.FDMO.HHZ. 2020-12-01T17:52:42.84 0.6 undecidable manual P 9 39.0276 50 -0.23 48
IV.CESX.HHZ. 2020-12-01T17:52:42.36 0.6 undecidable manual P 256 35.742 50 -0.21 48
IT.GNU.HGZ. 2020-12-01T17:52:42.87 0.6 undecidable manual P 290 38.1285 50 -0.06 49
IV.SMA1.EHZ. 2020-12-01T17:52:41.24 0.3 undecidable manual P 104 27.1506 50 0 76
IT.MTCL.HGZ. 2020-12-01T17:52:41.92 0.3 undecidable manual P 358 33.8439 50 -0.35 70
IV.MC2.EHZ. 2020-12-01T17:52:41.30 0.1 positive manual P 30 28.6491 50 -0.16 98
IV.MTRA.EHZ. 2020-12-01T17:52:41.77 0.6 undecidable manual P 76 32.2455 50 -0.26 48
IV.LNSS.HHZ. 2020-12-01T17:52:40.51 0.6 undecidable manual S 166 9.7791 135 0.25 50
IV.T1299.HNZ. 2020-12-01T17:52:40.58 0.1 negative manual P 105 22.8549 113 0.13 100
IV.ARRO.EHZ. 2020-12-01T17:52:40.51 0.3 undecidable manual P 239 23.4543 113 -0.04 76
IV.NRCA.HHZ. 2020-12-01T17:52:39.44 0.3 undecidable manual P 27 18.1707 118 -0.15 75
IV.LNSS.HHZ. 2020-12-01T17:52:38.59 0.3 undecidable manual P 166 9.7791 135 0.35 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HNE. ML:1.9 0.0009534626 0.1792 AML other m 2020-12-01T17:52:41.00
IV.LNSS.HHN. ML:2.0 0.001328258 1.7184 AML other m 2020-12-01T17:52:41.11
IV.LNSS.HNN. ML:2.0 0.0012313930000000001 1.7312 AML other m 2020-12-01T17:52:41.11
IV.LNSS.HHE. ML:1.9 0.0009857522000000002 0.1408 AML other m 2020-12-01T17:52:41.27
IV.NRCA.HHN. ML:1.8 0.0005729063000000001 0.1408 AML other m 2020-12-01T17:52:42.27
IV.NRCA.HNN. ML:1.8 0.0004938659999999999 0.1408 AML other m 2020-12-01T17:52:42.34
IV.NRCA.HNE. ML:1.9 0.0006176782 0.1408 AML other m 2020-12-01T17:52:42.73
IV.NRCA.HHE. ML:1.9 0.00063087795 0.1408 AML other m 2020-12-01T17:52:42.66
IV.ARRO.EHN. ML:1.5 0.00019401704999999999 0.1408 AML other m 2020-12-01T17:52:45.59
IV.SMA1.EHN. ML:1.9 0.00047610660000000005 0.128 AML other m 2020-12-01T17:52:46.16
IV.SMA1.EHE. ML:1.9 0.00044202875 0.1792 AML other m 2020-12-01T17:52:46.37
IV.MTRA.HNE. ML:1.7 0.00022208885 0.1792 AML other m 2020-12-01T17:52:47.68
IV.MTRA.EHE. ML:1.7 0.0002240585 0.1664 AML other m 2020-12-01T17:52:47.68
IV.CAMP.HHN. ML:1.3 0.000069331665 1.5776 AML other m 2020-12-01T17:52:47.14
IV.MTRA.EHN. ML:1.7 0.00023205870000000001 0.1792 AML other m 2020-12-01T17:52:48.01
IV.MTRA.HNN. ML:1.7 0.00023836345 0.1664 AML other m 2020-12-01T17:52:48.10
IV.CESX.HHN. ML:1.5 0.00011459985 0.1664 AML other m 2020-12-01T17:52:48.42
IV.CAMP.HHE. ML:1.2 0.000058387009999999996 0.576 AML other m 2020-12-01T17:52:48.60
IV.FDMO.HHN. ML:1.6 0.00013899965 1.7568 AML other m 2020-12-01T17:52:49.89
IV.CESX.HHE. ML:1.4 0.00009919969 0.1408 AML other m 2020-12-01T17:52:49.30
IV.FDMO.HHE. ML:1.4 0.000097413525 0.2176 AML other m 2020-12-01T17:52:49.40
IV.MOMA.HHE. ML:1.9 0.0002841791 0.2432 AML other m 2020-12-01T17:52:49.56
IV.MOMA.HNE. ML:1.9 0.0003006332 0.192 AML other m 2020-12-01T17:52:49.57
IV.MOMA.HHN. ML:1.9 0.00026532055 0.32 AML other m 2020-12-01T17:52:49.62
IV.MOMA.HNN. ML:1.9 0.00026977945000000004 0.32 AML other m 2020-12-01T17:52:49.62
IV.TERO.HHE. ML:1.4 0.00006659586500000001 0.192 AML other m 2020-12-01T17:52:51.24
IV.CSP1.EHE. ML:1.8 0.00016203221499999998 0.2432 AML other m 2020-12-01T17:52:51.48
IV.ASSB.HHE. ML:1.6 0.000111580035 0.0768 AML other m 2020-12-01T17:52:51.37
IV.CSP1.EHN. ML:1.8 0.0001813928 0.256 AML other m 2020-12-01T17:52:52.44
IV.ASSB.HHN. ML:1.7 0.00013041335000000002 0.2048 AML other m 2020-12-01T17:52:52.60
IV.MF5.EHE. ML:1.8 0.000179582925 1.5392 AML other m 2020-12-01T17:52:52.99
IV.MF5.EHN. ML:1.6 0.000116741525 0.5376 AML other m 2020-12-01T17:52:53.00
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