Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 12-10-2021 and time 04:41:34 (Italy) in region 4 km NE Cascia (PG)

A magnitude ML 1.9 earthquake occured in region: 4 km NE Cascia (PG), on

  • 12-10-2021 02:41:34 (UTC)
  • 12-10-2021 04:41:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7380, 13.0550 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
Cascia PG 4 3217 3217
Norcia PG 7 4957 8174
Poggiodomo PG 10 117 8291
Monteleone di Spoleto PG 13 599 8890
Cerreto di Spoleto PG 15 1075 9965
Preci PG 16 724 10689
Cittareale RI 16 482 11171
Vallo di Nera PG 16 364 11535
Accumoli RI 17 667 12202
Sant'Anatolia di Narco PG 18 564 12766
Scheggino PG 18 461 13227
Castelsantangelo sul Nera MC 19 281 13508
Sellano PG 20 1079 14587

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SE of Foligno (57155 inhabitants)
39 Km NE of Terni (111501 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
54 Km W of Teramo (54892 inhabitants)
68 Km SE of Perugia (166134 inhabitants)
86 Km E of Viterbo (67173 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
89 Km N of Tivoli (56533 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
100 Km W of Pescara (121014 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 1.9 2021-10-12
02:41:34		 42.738 13.055 8 2022-03-30
13:04:27		 Bollettino Sismico Italiano INGV 99521411
Reviewed
Rev100 		ML 1.9 2021-10-12
02:41:34		 42.7342 13.0815 10 2021-10-12
02:46:19		 Sala Sismica INGV-Roma 96456111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-12 02:41:34 ± 0.06
Latitude 42.7380 ± 0.0027
Longitude 13.0550 ± 0.0049
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 99521411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 283
Semi-minor axis of confidence ellipse (meter) 274
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 102
Circular confidence region, given by single value of horizontal uncertainty (meter) 280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 36
Number of associated phases, regardless of their use for origin computation 54
Number of defining phases 53
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.10522
Epicentral distance of station farthest from the epicenter (degree) 1.87958
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 56
Type of magnitude ML
Reference to an origin 96456111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-12 02:46:19

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 58
Type of magnitude ML
Reference to an origin 99521411
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-10 11:01:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IMOL.EHZ. 2021-10-12T02:42:04.71 3.0 undecidable manual P 330 208.6356 38 -3.28 0
IV.ARVD.HHZ. 2021-10-12T02:42:01.40 0.6 undecidable manual S 354 84.8484 50 0.75 37
IV.VCEL.EHZ. 2021-10-12T02:41:58.70 0.3 undecidable manual S 120 74.6697 50 0.77 56
IV.EL6.EHZ. 2021-10-12T02:41:56.20 0.6 undecidable manual S 3 65.6898 50 0.65 40
IV.FOSV.EHZ. 2021-10-12T02:41:56.00 0.3 undecidable manual S 339 66.1893 50 0.32 66
IV.ATCC.EHZ. 2021-10-12T02:41:54.40 0.3 undecidable manual S 326 59.9955 50 0.39 66
IV.SNTG.HHZ. 2021-10-12T02:41:53.50 0.1 undecidable manual S 351 58.0974 50 -0.01 95
IV.FIAM.HHZ. 2021-10-12T02:41:51.70 0.3 undecidable manual S 174 52.4031 50 -0.29 68
IV.PIEI.HHZ. 2021-10-12T02:41:51.84 0.3 undecidable manual P 335 98.0241 50 0.1 65
IV.MF5.EHZ. 2021-10-12T02:41:50.10 0.6 undecidable manual S 50 43.0236 50 0.61 42
IV.ASSB.HHZ. 2021-10-12T02:41:50.40 0.3 undecidable manual S 317 46.7199 50 -0.07 72
IV.ARVD.HHZ. 2021-10-12T02:41:49.73 0.3 undecidable manual P 354 84.8484 50 0.02 67
IV.GUMA.HHZ. 2021-10-12T02:41:49.70 0.1 undecidable manual S 32 42.624 50 0.32 92
IV.SSFR.HHZ. 2021-10-12T02:41:49.52 0.3 undecidable manual P 344 80.5638 50 0.47 62
IV.CSP1.EHZ. 2021-10-12T02:41:48.57 0.3 undecidable manual S 17 41.1255 50 -0.41 68
IV.MURB.HHZ. 2021-10-12T02:41:48.03 0.3 undecidable manual P 324 72.372 50 0.24 66
IV.MOMA.HHZ. 2021-10-12T02:41:48.60 0.3 undecidable manual S 281 40.1265 50 -0.13 72
IV.CESX.HHZ. 2021-10-12T02:41:48.80 0.3 undecidable manual S 250 40.8258 50 -0.1 72
IV.VCEL.EHZ. 2021-10-12T02:41:48.69 0.3 undecidable manual P 120 74.6697 50 0.55 61
IV.SRES.HHZ. 2021-10-12T02:41:47.62 0.3 undecidable manual P 219 71.2731 50 0 69
IV.FOSV.EHZ. 2021-10-12T02:41:46.96 0.3 undecidable manual P 339 66.1893 50 0.12 68
IV.CESI.HHZ. 2021-10-12T02:41:46.00 0.1 undecidable manual S 338 32.0457 103 -0.18 96
IV.EL6.EHZ. 2021-10-12T02:41:46.36 0.1 undecidable manual P 3 65.6898 50 -0.4 86
IV.FDMO.HHZ. 2021-10-12T02:41:46.20 0.1 undecidable manual S 5 33.2445 103 -0.38 92
IV.ATCC.EHZ. 2021-10-12T02:41:45.82 0.1 undecidable manual P 326 59.9955 50 -0.06 94
IV.MNTT.EHZ. 2021-10-12T02:41:45.73 0.1 undecidable manual P 51 56.7987 50 0.35 89
IV.SNTG.HHZ. 2021-10-12T02:41:45.45 0.3 undecidable manual P 351 58.0974 50 -0.14 69
IV.ARRO.EHZ. 2021-10-12T02:41:45.70 0.6 undecidable manual S 233 29.4483 104 0.39 46
IV.MTRA.EHZ. 2021-10-12T02:41:44.30 0.1 undecidable manual S 86 27.9498 105 -0.49 90
IV.RM33.EHZ. 2021-10-12T02:41:44.70 0.3 undecidable manual S 153 28.5492 105 -0.31 71
IV.SMA1.EHZ. 2021-10-12T02:41:44.50 0.3 undecidable manual S 117 25.752 106 0.42 69
IV.FIAM.HHZ. 2021-10-12T02:41:44.29 0.1 negative manual P 174 52.4031 50 -0.42 88
IV.MMO1.EHZ. 2021-10-12T02:41:44.60 0.1 undecidable manual S 51 28.4493 105 -0.38 93
IV.GUMA.HHZ. 2021-10-12T02:41:43.04 0.1 positive manual P 32 42.624 50 -0.16 95
IV.TERO.HHZ. 2021-10-12T02:41:43.29 0.1 undecidable manual P 106 46.5201 50 -0.52 87
IV.MF5.EHZ. 2021-10-12T02:41:43.20 0.1 undecidable manual P 50 43.0236 50 -0.06 96
IV.MC2.EHZ. 2021-10-12T02:41:43.30 0.3 undecidable manual S 30 22.0668 109 0.43 69
IV.ASSB.HHZ. 2021-10-12T02:41:43.62 0.3 undecidable manual P 317 46.7199 50 -0.21 70
IV.CESX.HHZ. 2021-10-12T02:41:42.54 0.1 positive manual P 250 40.8258 50 -0.38 91
IV.CSP1.EHZ. 2021-10-12T02:41:42.48 0.1 positive manual P 17 41.1255 50 -0.49 88
IV.MOMA.HHZ. 2021-10-12T02:41:42.69 0.1 undecidable manual P 281 40.1265 50 -0.13 96
IV.LNSS.HHZ. 2021-10-12T02:41:41.00 0.1 undecidable manual S 185 15.0738 117 0.4 94
IV.FDMO.HHZ. 2021-10-12T02:41:41.26 0.1 positive manual P 5 33.2445 103 -0.32 93
IV.CESI.HHZ. 2021-10-12T02:41:41.24 0.1 positive manual P 338 32.0457 103 -0.11 97
IV.GAVE.EHZ. 2021-10-12T02:41:41.04 0.3 undecidable manual S 250 14.7741 100
IV.ARRO.EHZ. 2021-10-12T02:41:40.85 0.1 positive manual P 233 29.4483 104 0 100
IV.MTRA.EHZ. 2021-10-12T02:41:40.32 0.1 positive manual P 86 27.9498 105 -0.23 96
IV.RM33.EHZ. 2021-10-12T02:41:40.45 0.1 positive manual P 153 28.5492 105 -0.23 96
IV.SMA1.EHZ. 2021-10-12T02:41:40.23 0.1 undecidable manual P 117 25.752 106 0.09 99
IV.MMO1.EHZ. 2021-10-12T02:41:40.43 0.1 positive manual P 51 28.4493 105 -0.23 96
IV.MC2.EHZ. 2021-10-12T02:41:39.68 0.1 positive manual P 30 22.0668 109 0.24 97
IV.NRCA.HNZ. 2021-10-12T02:41:39.90 0.1 undecidable manual S 24 11.6772 123 0.33 96
IV.LNSS.HHZ. 2021-10-12T02:41:38.60 0.1 positive manual P 185 15.0738 117 0.47 93
IV.NRCA.HNZ. 2021-10-12T02:41:37.98 0.1 positive manual P 24 11.6772 123 0.44 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0.0 0.0032800000000000004 1.9 AML other m 2021-10-12T02:41:40.97
IV.NRCA.HNN. ML:0.0 0.002775 1.9 AML other m 2021-10-12T02:41:40.98
IV.NRCA.HHE. ML:0.0 0.005685000000000001 0.24 AML other m 2021-10-12T02:41:40.11
IV.NRCA.HNE. ML:0.0 0.00538 0.18 AML other m 2021-10-12T02:41:40.12
IV.LNSS.HHN. ML:0.0 0.001805 0.16 AML other m 2021-10-12T02:41:41.63
IV.LNSS.HNN. ML:0.0 0.001605 0.16 AML other m 2021-10-12T02:41:41.63
IV.GAVE.EHN. ML:2.3 0.0020150000000000003 0.54 AML other m 2021-10-12T02:41:41.38
IV.LNSS.HHE. ML:0.0 0.00172 0.98 AML other m 2021-10-12T02:41:41.40
IV.LNSS.HNE. ML:0.0 0.0017349999999999998 0.98 AML other m 2021-10-12T02:41:41.89
IV.GAVE.EHE. ML:2.2 0.0011071554000000002 0.12 AML other m 2021-10-12T02:41:41.91
IV.MTRA.EHN. ML:0.0 0.0007735471 0.2592 AML other m 2021-10-12T02:41:45.11
IV.MTRA.HNN. ML:0.0 0.00076 0.26 AML other m 2021-10-12T02:41:45.10
IV.SMA1.EHE. ML:0.0 0.000447 0.32 AML other m 2021-10-12T02:41:45.39
IV.MTRA.HNE. ML:0.0 0.0007250000000000001 1.14 AML other m 2021-10-12T02:41:45.00
IV.MTRA.EHE. ML:0.0 0.000718 1.14 AML other m 2021-10-12T02:41:45.57
IV.RM33.EHN. ML:0.0 0.00032651555 0.24 AML other m 2021-10-12T02:41:45.52
IV.RM33.EHE. ML:0.0 0.000272 0.42 AML other m 2021-10-12T02:41:46.49
IV.SMA1.EHN. ML:0.0 0.00028300000000000005 0.16 AML other m 2021-10-12T02:41:46.46
IV.CESI.HHE. ML:0.0 0.000188 0.46 AML other m 2021-10-12T02:41:46.47
IV.ARRO.EHN. ML:0.0 0.0002135 0.14 AML other m 2021-10-12T02:41:47.01
IV.ARRO.EHE. ML:0.0 0.0002105 0.2 AML other m 2021-10-12T02:41:47.13
IV.FDMO.HHE. ML:0.0 0.00026000000000000003 0.14 AML other m 2021-10-12T02:41:47.09
IV.CESI.HHN. ML:0.0 0.00033800000000000003 0.3 AML other m 2021-10-12T02:41:47.57
IV.FDMO.HHN. ML:0.0 0.00022250000000000001 0.82 AML other m 2021-10-12T02:41:48.03
IV.MOMA.HHE. ML:0.0 0.000377 0.2 AML other m 2021-10-12T02:41:49.17
IV.CSP1.EHE. ML:0.0 0.000373 0.8 AML other m 2021-10-12T02:41:49.47
IV.MOMA.HHN. ML:0.0 0.00020050000000000002 0.28 AML other m 2021-10-12T02:41:49.60
IV.CSP1.EHN. ML:0.0 0.00046399999999999995 0.36 AML other m 2021-10-12T02:41:49.71
IV.CESX.HHN. ML:0.0 0.000124 1.06 AML other m 2021-10-12T02:41:51.71
IV.GUMA.HNE. ML:0.0 0.00034700000000000003 0.7 AML other m 2021-10-12T02:41:51.38
IV.ASSB.HHE. ML:0.0 0.0001347621 0.12 AML other m 2021-10-12T02:41:52.31
IV.ASSB.HHN. ML:0.0 0.0001895 1.42 AML other m 2021-10-12T02:41:52.03
IV.CESX.HHE. ML:0.0 0.00010155 0.4 AML other m 2021-10-12T02:41:52.05
IV.GUMA.HNN. ML:0.0 0.00044950000000000003 0.56 AML other m 2021-10-12T02:41:52.18
IV.GUMA.HHN. ML:0.0 0.000399 0.48 AML other m 2021-10-12T02:41:52.19
IV.FIAM.HHN. ML:0.0 0.0000471 0.72 AML other m 2021-10-12T02:41:52.29
IV.GUMA.HHE. ML:0.0 0.00033850000000000004 0.24 AML other m 2021-10-12T02:41:52.37
IV.SNTG.HHE. ML:0.0 0.00005871236 0.1216 AML other m 2021-10-12T02:41:55.37
IV.ATCC.EHN. ML:0.0 0.00009483188000000001 0.1584 AML other m 2021-10-12T02:41:56.13
IV.SNTG.HHN. ML:0.0 0.000059983405000000006 0.4992 AML other m 2021-10-12T02:41:57.98
IV.ATCC.EHE. ML:0.0 0.0001174 0.66 AML other m 2021-10-12T02:41:56.36
IV.MNTT.EHE. ML:2.3 0.000446 1.48 AML other m 2021-10-12T02:41:56.04
IV.EL6.EHE. ML:0.0 0.0001385 0.62 AML other m 2021-10-12T02:41:57.51
IV.MNTT.EHN. ML:2.3 0.0004265 1.24 AML other m 2021-10-12T02:41:57.81
IV.EL6.EHN. ML:0.0 0.00013935 1.48 AML other m 2021-10-12T02:41:58.86
IV.SRES.HHN. ML:1.3 0.0000334 0.54 AML other m 2021-10-12T02:41:58.03
IV.SRES.HHE. ML:1.4 0.00003865 0.44 AML other m 2021-10-12T02:42:00.57
IV.MURB.HHN. ML:0.0 0.000229086 0.3408 AML other m 2021-10-12T02:42:01.31
IV.MURB.HHE. ML:0.0 0.00019914949999999998 0.3392 AML other m 2021-10-12T02:42:02.07
IV.SSFR.HHN. ML:0.0 0.00009335643 0.2192 AML other m 2021-10-12T02:42:01.88
IV.SSFR.HHE. ML:1.9 0.00011105 0.2 AML other m 2021-10-12T02:42:04.48
IV.FIAM.HHE. ML:1.0 0.000027500000000000004 0.84 AML other m 2021-10-12T02:42:04.34
IV.PIEI.HHE. ML:1.5 0.00002955 1.58 AML other m 2021-10-12T02:42:10.16
IV.PIEI.HHN. ML:1.5 0.00003229999999999999 0.42 AML other m 2021-10-12T02:42:16.59
IV.TERO.HHN. ML:0.0 0.00009439163 0.12 AML other m 2021-10-12T02:41:50.35
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