Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 17-01-2021 and time 11:45:35 (UTC) in region 5 km SE Castelsantangelo sul Nera (MC)

A magnitude ML 1.3 earthquake occured in region: 5 km SE Castelsantangelo sul Nera (MC), on

  • 17-01-2021 11:45:35 (UTC)
  • 17-01-2021 12:45:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8560, 13.1800 at 16 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Castelsantangelo sul Nera MC 5 281 281
Norcia PG 10 4957 5238
Ussita MC 11 444 5682
Visso MC 11 1107 6789
Preci PG 12 724 7513
Montegallo AP 13 523 8036
Montemonaco AP 13 604 8640
Arquata del Tronto AP 13 1178 9818
Bolognola MC 16 142 9960
Montefortino FM 17 1178 11138
Accumoli RI 19 667 11805
Acquacanina MC 20 121 11926

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Foligno (57155 inhabitants)
48 Km W of Teramo (54892 inhabitants)
54 Km NE of Terni (111501 inhabitants)
59 Km NW of L'Aquila (69753 inhabitants)
70 Km E of Perugia (166134 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
89 Km SW of Ancona (100861 inhabitants)
95 Km W of Pescara (121014 inhabitants)
98 Km NW of Chieti (51815 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
Reviewed
Rev100 		ML 1.3 2021-01-17
11:45:35		 42.8557 13.1797 16 2021-01-17
11:52:56		 Sala Sismica INGV-Roma 86327591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-17 11:45:35 ± 0.07
Latitude 42.8557 ± 0.0027
Longitude 13.1797 ± 0.0049
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86327591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 347
Semi-minor axis of confidence ellipse (meter) 294
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 64
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.05306
Epicentral distance of station farthest from the epicenter (degree) 0.47664
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 27
Type of magnitude ML
Reference to an origin 86327591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-17 11:52:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RM33.EHZ. 2021-01-17T11:45:49.18 0.6 undecidable manual S 176 38.5281 102 0.29 44
IV.TERO.HHZ. 2021-01-17T11:45:49.86 0.6 undecidable manual S 127 43.1235 100 -0.23 45
IV.LNSS.HHZ. 2021-01-17T11:45:47.04 0.6 undecidable manual S 202 30.2475 106 0.3 45
IV.SMA1.EHZ. 2021-01-17T11:45:46.17 0.6 undecidable manual S 153 28.0497 108 0.01 48
IV.CESI.HHZ. 2021-01-17T11:45:46.28 0.6 undecidable manual S 307 27.8499 108 0.17 47
IV.MF5.EHZ. 2021-01-17T11:45:46.41 0.3 undecidable manual S 57 27.0507 109 0.48 66
IV.GUMA.HNZ. 2021-01-17T11:45:46.25 0.6 undecidable manual S 29 26.2515 110 0.54 43
IV.T1299.HNZ. 2021-01-17T11:45:45.93 0.6 undecidable manual S 161 25.9518 110 0.29 45
IV.CSP1.EHZ. 2021-01-17T11:45:45.67 0.6 undecidable manual S 4 26.2515 110 -0.06 47
IV.EL6.EHZ. 2021-01-17T11:45:45.64 1.0 undecidable manual P 353 52.9026 98 0.01 23
IV.MTRA.EHZ. 2021-01-17T11:45:44.07 0.6 undecidable manual S 122 20.7681 117 -0.31 46
IT.MTCL.HGZ. 2021-01-17T11:45:44.44 0.6 undecidable manual S 316 21.1677 116 -0.04 48
IV.FDMO.HHZ. 2021-01-17T11:45:44.38 0.6 undecidable manual S 340 21.4674 116 -0.15 47
IV.MNTT.EHZ. 2021-01-17T11:45:44.19 1.0 negative manual P 56 40.8258 101 0.41 22
IV.RM33.EHZ. 2021-01-17T11:45:43.50 0.6 undecidable manual P 176 38.5281 102 0.06 46
IV.TERO.HHZ. 2021-01-17T11:45:43.80 0.6 undecidable manual P 127 43.1235 100 -0.34 44
IV.FEMA.HNZ. 2021-01-17T11:45:43.49 0.6 undecidable manual S 318 15.873 127 0.23 47
IV.LNSS.HHZ. 2021-01-17T11:45:42.29 0.6 undecidable manual P 202 30.2475 106 0.09 47
IV.MMO1.EHZ. 2021-01-17T11:45:42.38 0.6 undecidable manual S 68 12.876 134 -0.28 46
IV.NRCA.HHZ. 2021-01-17T11:45:41.42 0.6 undecidable manual S 245 5.8941 157 -0.15 49
IV.GUMA.HNZ. 2021-01-17T11:45:41.64 0.1 undecidable manual P 29 26.2515 110 0.04 96
IV.MC2.EHZ. 2021-01-17T11:45:41.79 0.6 undecidable manual S 7 6.1938 155 0.17 48
IV.SMA1.EHZ. 2021-01-17T11:45:41.67 0.6 negative manual P 153 28.0497 108 -0.19 47
IV.T1299.HNZ. 2021-01-17T11:45:41.51 0.1 undecidable manual P 161 25.9518 110 -0.05 96
IV.CESI.HHZ. 2021-01-17T11:45:41.79 1.0 undecidable manual P 307 27.8499 108 -0.05 24
IV.CSP1.EHZ. 2021-01-17T11:45:41.41 0.1 undecidable manual P 4 26.2515 110 -0.21 92
IV.MF5.EHZ. 2021-01-17T11:45:41.88 0.3 positive manual P 57 27.0507 109 0.15 70
IV.FDMO.HHZ. 2021-01-17T11:45:40.82 0.6 negative manual P 340 21.4674 116 -0.1 48
IV.FEMA.HNZ. 2021-01-17T11:45:40.09 0.6 undecidable manual P 318 15.873 127 -0.1 48
IV.MTRA.EHZ. 2021-01-17T11:45:40.60 0.3 negative manual P 122 20.7681 117 -0.24 70
IT.MTCL.HGZ. 2021-01-17T11:45:40.76 0.1 undecidable manual P 316 21.1677 116 -0.13 95
IV.MMO1.EHZ. 2021-01-17T11:45:39.62 0.6 undecidable manual P 68 12.876 134 -0.22 47
IV.NRCA.HHZ. 2021-01-17T11:45:39.21 0.1 negative manual P 245 5.8941 157 -0.01 100
IV.MC2.EHZ. 2021-01-17T11:45:39.34 0.3 negative manual P 7 6.1938 155 0.1 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:1.7 0.000579 0.08 AML other m 2021-01-17T11:45:41.55
IV.NRCA.HHE. ML:1.9 0.00079 0.16 AML other m 2021-01-17T11:45:41.60
IV.NRCA.HHN. ML:1.7 0.000568 0.06 AML other m 2021-01-17T11:45:41.55
IV.NRCA.HNE. ML:1.9 0.0007688946 0.16 AML other m 2021-01-17T11:45:41.76
IV.MTRA.EHE. ML:1.4 0.0001615 0.2 AML other m 2021-01-17T11:45:44.20
IV.FDMO.HHN. ML:1.2 0.00009120000000000001 0.26 AML other m 2021-01-17T11:45:44.64
IV.MTRA.EHN. ML:1.3 0.000114310645 0.1984 AML other m 2021-01-17T11:45:44.49
IV.FDMO.HHE. ML:1.0 0.000057310744999999996 0.1792 AML other m 2021-01-17T11:45:44.92
IV.SMA1.EHN. ML:1.0 0.00004742592 0.2752 AML other m 2021-01-17T11:45:47.60
IV.LNSS.HHE. ML:1.4 0.000105627345 0.16 AML other m 2021-01-17T11:45:47.39
IV.LNSS.HHN. ML:1.2 0.00006555424 0.32 AML other m 2021-01-17T11:45:48.40
IV.SMA1.EHE. ML:1.0 0.000048616615 0.1408 AML other m 2021-01-17T11:45:46.91
IV.MTRA.HNE. ML:1.4 0.0001696878 0.192 AML other m 2021-01-17T11:45:44.20
IV.MTRA.HNN. ML:1.4 0.00014828874999999999 0.992 AML other m 2021-01-17T11:45:44.81
IV.CESI.HHE. ML:1.0 0.000050244585 0.16 AML other m 2021-01-17T11:45:46.93
IV.CESI.HHN. ML:1.4 0.00010883608999999999 0.256 AML other m 2021-01-17T11:45:46.74
IV.CESI.HNE. ML:1.3 0.00008483917 0.3328 AML other m 2021-01-17T11:45:46.60
IV.CESI.HNN. ML:1.4 0.0001040036 0.928 AML other m 2021-01-17T11:45:47.08
IV.MF5.EHE. ML:1.2 0.000079768930985 0.4352 AML other m 2021-01-17T11:45:46.99
IV.MF5.EHN. ML:1.3 0.000087856975 0.3392 AML other m 2021-01-17T11:45:47.03
IV.LNSS.HNE. ML:1.5 0.00012905467 0.1664 AML other m 2021-01-17T11:45:47.38
IV.RM33.HNE. ML:1.4 0.000086918495 0.9024 AML other m 2021-01-17T11:45:50.26
IV.RM33.HNN. ML:1.6 0.00012864852 1.3632 AML other m 2021-01-17T11:45:49.86
IV.RM33.EHE. ML:1.3 0.00006468626 0.1984 AML other m 2021-01-17T11:45:50.06
IV.RM33.EHN. ML:1.2 0.000058778245 0.1984 AML other m 2021-01-17T11:45:49.41
IV.TERO.HHE. ML:1.0 0.00003024802 0.1024 AML other m 2021-01-17T11:45:50.36
IV.TERO.HHN. ML:1.0 0.00002863401 0.1408 AML other m 2021-01-17T11:45:50.45
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