Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 21-10-2019 and time 02:12:21 (UTC) in region 4 km NW Sant'Anatolia di Narco (PG)

A magnitude ML 1.4 earthquake occured in region: 4 km NW Sant'Anatolia di Narco (PG), on

  • 21-10-2019 02:12:21 (UTC)
  • 21-10-2019 04:12:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7610, 12.8030 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
Sant'Anatolia di Narco PG 4 564 564
Vallo di Nera PG 5 364 928
Scheggino PG 6 461 1389
Spoleto PG 6 38218 39607
Campello sul Clitunno PG 7 2442 42049
Cerreto di Spoleto PG 11 1075 43124
Poggiodomo PG 12 117 43241
Castel Ritaldi PG 13 3278 46519
Trevi PG 14 8469 54988
Ferentillo TR 16 1913 56901
Monteleone di Spoleto PG 17 599 57500
Sellano PG 18 1079 58579
Cascia PG 18 3217 61796
Montefranco TR 18 1276 63072
Montefalco PG 19 5679 68751
Polino TR 20 233 68984
Arrone TR 20 2763 71747

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km SE of Foligno (57155 inhabitants)
26 Km NE of Terni (111501 inhabitants)
51 Km SE of Perugia (166134 inhabitants)
67 Km NW of L'Aquila (69753 inhabitants)
69 Km NE of Viterbo (67173 inhabitants)
75 Km W of Teramo (54892 inhabitants)
85 Km N of Guidonia Montecelio (88673 inhabitants)
89 Km N of Tivoli (56533 inhabitants)
100 Km N 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 1.4 2019-10-21
02:12:21		 42.7607 12.8032 8 2020-02-28
16:42:23		 Bollettino Sismico Italiano INGV 76319091
Reviewed
Rev100 		ML 1.4 2019-10-21
02:12:21		 42.7612 12.7983 8 2019-10-21
02:20:13		 Sala Sismica INGV-Roma 73366081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-21 02:12:21 ± 0.05
Latitude 42.7607 ± 0.0027
Longitude 12.8032 ± 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 76319091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 280
Semi-minor axis of confidence ellipse (meter) 196
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 310
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) 58
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.54139
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 76319091
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-27 14:43:16

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 73366081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-21 02:20:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MIGL.HHZ. 2019-10-21T02:13:52.64 3.0 undecidable manual Sg 12.47 0
GU.RNCA.HHZ. 2019-10-21T02:13:12.91 3.0 undecidable manual Pn 4.95 0
IV.MAON.HHZ. 2019-10-21T02:12:54.83 3.0 undecidable manual S 0.85 0
IV.MCRV.HHZ. 2019-10-21T02:12:45.74 3.0 undecidable manual Pn -4.37 0
IV.MURB.HHZ. 2019-10-21T02:12:41.60 0.3 undecidable manual S 338 60.0954 50 0.58 62
IV.SNTG.HHZ. 2019-10-21T02:12:40.10 0.1 undecidable manual S 11 55.9995 50 0.19 91
IV.CSP1.EHZ. 2019-10-21T02:12:38.00 0.1 undecidable manual S 41 49.1175 50 -0.09 95
IV.ATCC.EHZ. 2019-10-21T02:12:38.40 0.1 undecidable manual S 344 48.9177 50 0.37 89
IV.SMA1.EHZ. 2019-10-21T02:12:37.30 0.3 undecidable manual S 108 45.7209 50 0.12 71
IV.MML1.HNE. 2019-10-21T02:12:35.62 0.6 undecidable manual S 19 41.4252 50 -0.42 45
IV.MC2.EHZ. 2019-10-21T02:12:34.60 0.3 undecidable manual S 62 35.5422 50 0.13 72
IV.FDMO.HHZ. 2019-10-21T02:12:34.90 0.1 undecidable manual S 37 38.3283 50 -0.31 92
IT.MTCL.HGE. 2019-10-21T02:12:32.40 0.3 undecidable manual S 32 30.3474 105 -0.37 69
IV.MURB.HHZ. 2019-10-21T02:12:32.75 0.1 undecidable manual P 338 60.0954 50 -0.17 91
IV.CESI.HHZ. 2019-10-21T02:12:32.10 0.3 undecidable manual S 17 28.3494 106 0.02 75
IV.FEMA.HNE. 2019-10-21T02:12:32.70 0.1 undecidable manual S 42 30.0477 105 0.05 99
IV.LNSS.HHZ. 2019-10-21T02:12:31.40 0.3 undecidable manual S 132 26.0517 107 0.06 74
IV.ATCC.EHZ. 2019-10-21T02:12:31.16 0.1 undecidable manual P 344 48.9177 50 -0.03 96
IV.SNTG.HHZ. 2019-10-21T02:12:31.98 0.1 undecidable manual P 11 55.9995 50 -0.3 89
IV.NRCA.HHZ. 2019-10-21T02:12:31.60 0.3 undecidable manual S 72 26.5512 107 0.1 74
IV.CSP1.EHZ. 2019-10-21T02:12:31.29 0.3 undecidable manual P 41 49.1175 50 0.06 71
IV.CESX.HHZ. 2019-10-21T02:12:30.40 0.3 undecidable manual S 226 24.4533 108 -0.38 70
IT.FOPC.HGZ. 2019-10-21T02:12:30.93 0.6 undecidable manual S 341 24.5532 108 0.1 49
IV.SMA1.EHZ. 2019-10-21T02:12:30.66 0.1 undecidable manual P 108 45.7209 50 -0.04 96
IV.MC2.EHZ. 2019-10-21T02:12:29.68 0.3 undecidable manual P 62 35.5422 50 0.54 66
IV.MML1.HNE. 2019-10-21T02:12:29.62 0.1 undecidable manual P 19 41.4252 50 -0.43 89
IT.GNU.HGE. 2019-10-21T02:12:29.20 0.3 undecidable manual S 284 19.5693 112 0 76
IV.FDMO.HHZ. 2019-10-21T02:12:29.38 0.1 undecidable manual P 37 38.3283 50 -0.18 95
IV.ARRO.EHZ. 2019-10-21T02:12:29.80 0.3 undecidable manual S 189 20.3685 112 0.34 71
IV.MOMA.HHZ. 2019-10-21T02:12:29.30 0.1 undecidable manual S 284 19.5693 112 0.1 100
IV.FEMA.HNE. 2019-10-21T02:12:28.66 1.0 undecidable manual P 42 30.0477 105 0.57 22
IT.MTCL.HGE. 2019-10-21T02:12:28.19 0.3 undecidable manual P 32 30.3474 105 0.03 74
IV.NRCA.HHZ. 2019-10-21T02:12:27.51 0.1 undecidable manual P 72 26.5512 107 0.09 98
IV.LNSS.HHZ. 2019-10-21T02:12:27.30 0.1 undecidable manual P 132 26.0517 107 -0.03 100
IT.FOPC.HGZ. 2019-10-21T02:12:27.09 0.3 undecidable manual P 341 24.5532 108 0.05 75
IV.CESI.HHZ. 2019-10-21T02:12:27.74 0.1 undecidable manual P 17 28.3494 106 -0.02 100
IV.MOMA.HHZ. 2019-10-21T02:12:26.17 0.1 undecidable manual P 284 19.5693 112 0.07 100
IT.GNU.HGE. 2019-10-21T02:12:26.22 1.0 undecidable manual P 284 19.5693 112 0.12 25
IV.CESX.HHZ. 2019-10-21T02:12:26.68 0.1 undecidable manual P 226 24.4533 108 -0.33 94
IV.ARRO.EHZ. 2019-10-21T02:12:26.37 0.3 undecidable manual P 189 20.3685 112 0.12 74
IV.SAMA.HHZ. 2019-10-21T02:12:23.22 3.0 undecidable manual S -9.96 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHE. ML:1.6 0.0003025 0.14 AML other m 2019-10-21T02:12:29.58
IV.MOMA.HHN. ML:1.4 0.0001885 0.44 AML other m 2019-10-21T02:12:29.52
IV.ARRO.EHE. ML:1.4 0.000183 0.24 AML other m 2019-10-21T02:12:29.79
IV.ARRO.EHN. ML:1.2 0.000115 1.82 AML other m 2019-10-21T02:12:30.06
IV.CESX.HHE. ML:1.2 0.00010139999999999998 0.34 AML other m 2019-10-21T02:12:31.44
IV.LNSS.HHN. ML:1.5 0.00016350000000000002 0.28 AML other m 2019-10-21T02:12:31.78
IV.CESX.HHN. ML:1.2 0.00010205 0.42 AML other m 2019-10-21T02:12:32.14
IV.NRCA.HHE. ML:1.3 0.00011300000000000001 1.54 AML other m 2019-10-21T02:12:32.18
IV.CESI.HHN. ML:2.0 0.000473 0.38 AML other m 2019-10-21T02:12:32.29
IV.CESI.HNN. ML:2.0 0.000505 0.38 AML other m 2019-10-21T02:12:32.29
IV.NRCA.HHN. ML:1.3 0.0001085 0.1 AML other m 2019-10-21T02:12:32.34
IV.LNSS.HHE. ML:1.5 0.0001835 0.46 AML other m 2019-10-21T02:12:32.38
IV.CESI.HHE. ML:1.3 0.00011599999999999999 0.08 AML other m 2019-10-21T02:12:32.82
IV.CESI.HNE. ML:1.6 0.00018915745 4.7408 AML other m 2019-10-21T02:12:33.13
IV.SMA1.EHE. ML:1.3 0.000055599999999999996 1.54 AML other m 2019-10-21T02:12:38.07
IV.ATCC.EHN. ML:1.5 0.0000842 0.68 AML other m 2019-10-21T02:12:38.77
IV.ATCC.EHE. ML:1.6 0.00010630000000000001 1.6 AML other m 2019-10-21T02:12:38.87
IV.SMA1.EHN. ML:1.2 0.00004545 0.4 AML other m 2019-10-21T02:12:40.47
IV.MURB.HHE. ML:1.8 0.0001265 1.16 AML other m 2019-10-21T02:12:42.27
IV.MURB.HHN. ML:1.7 0.0001046 0.94 AML other m 2019-10-21T02:12:43.98
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