Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 09-02-2021 and time 05:55:12 (Italy) in region 6 km SE Castelsantangelo sul Nera (MC)

A magnitude ML 1.4 earthquake occured in region: 6 km SE Castelsantangelo sul Nera (MC), on

  • 09-02-2021 04:55:12 (UTC)
  • 09-02-2021 05:55:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8510, 13.1990 at 10 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 6 281 281
Norcia PG 11 4957 5238
Montegallo AP 11 523 5761
Ussita MC 12 444 6205
Arquata del Tronto AP 12 1178 7383
Montemonaco AP 12 604 7987
Visso MC 13 1107 9094
Preci PG 13 724 9818
Montefortino FM 16 1178 10996
Bolognola MC 16 142 11138
Accumoli RI 18 667 11805
Amandola FM 19 3629 15434
Acquasanta Terme AP 19 2916 18350
Acquacanina MC 20 121 18471

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
47 Km W of Teramo (54892 inhabitants)
55 Km NE of Terni (111501 inhabitants)
58 Km N of L'Aquila (69753 inhabitants)
72 Km E of Perugia (166134 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
89 Km SW of Ancona (100861 inhabitants)
94 Km W of Pescara (121014 inhabitants)
97 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 1.4 2021-02-09
04:55:12		 42.851 13.199 10 2021-02-09
05:00:52		 Sala Sismica INGV-Roma 86957701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-09 04:55:12 ± 0.04
Latitude 42.8510 ± 0.0027
Longitude 13.1990 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86957701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 328
Semi-minor axis of confidence ellipse (meter) 48
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 223
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.27429
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 86957701
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-09 05:00:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PE3.EHZ. 2021-02-09T04:55:43.10 3.0 undecidable manual S -4.06 0
IV.ARVD.HHZ. 2021-02-09T04:55:36.59 3.0 undecidable manual S -0.27 0
IV.SMA1.EHZ. 2021-02-09T04:55:22.34 1.0 undecidable manual S 156 26.8509 50 -0.09 24
IV.CSP1.EHZ. 2021-02-09T04:55:22.12 0.6 undecidable manual S 1 26.751 50 -0.28 47
IV.FDMO.HHZ. 2021-02-09T04:55:20.95 0.6 undecidable manual S 336 22.4553 114 -0.15 48
IV.MTRA.EHZ. 2021-02-09T04:55:19.92 0.3 undecidable manual S 123 19.1697 117 -0.14 73
IV.FEMA.HNZ. 2021-02-09T04:55:19.63 0.6 undecidable manual S 316 17.2716 120 0.14 49
IV.CSP1.EHZ. 2021-02-09T04:55:18.12 0.3 negative manual P 1 26.751 50 -0.12 72
IV.LNSS.HHZ. 2021-02-09T04:55:18.79 0.3 negative manual P 205 30.4473 50 -0.02 73
IV.MF5.EHZ. 2021-02-09T04:55:18.49 0.3 negative manual P 54 26.0517 50 0.35 69
IV.SMA1.EHZ. 2021-02-09T04:55:18.26 0.6 undecidable manual P 156 26.8509 50 0 49
IV.GAVE.EHZ. 2021-02-09T04:55:18.75 0.6 positive manual P 235 30.4473 50 -0.06 48
IV.GUMA.HHZ. 2021-02-09T04:55:18.34 0.6 undecidable manual P 25 25.9518 50 0.22 47
IV.CESI.HHZ. 2021-02-09T04:55:18.58 0.1 positive manual P 306 29.3484 50 -0.07 97
IT.MTCL.HGZ. 2021-02-09T04:55:17.43 0.6 undecidable manual P 314 22.6551 114 -0.09 49
IV.MMO1.EHZ. 2021-02-09T04:55:17.74 0.6 undecidable manual S 63 11.6772 130 -0.15 49
IV.FDMO.HHZ. 2021-02-09T04:55:17.40 0.6 positive manual P 336 22.4553 114 -0.09 49
IV.NRCA.HNZ. 2021-02-09T04:55:16.70 0.3 undecidable manual S 254 7.1928 144 -0.12 75
IV.MTRA.EHZ. 2021-02-09T04:55:16.89 0.1 positive manual P 123 19.1697 117 0 100
IV.FEMA.HNZ. 2021-02-09T04:55:16.71 0.3 undecidable manual P 316 17.2716 120 0.15 73
IV.MMO1.EHZ. 2021-02-09T04:55:15.74 0.3 undecidable manual P 63 11.6772 130 0.1 74
IV.NRCA.HNZ. 2021-02-09T04:55:15.20 0.1 positive manual P 254 7.1928 144 0.18 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:2.1 0.00198 0.14 AML other m 2021-02-09T04:55:16.81
IV.NRCA.HNE. ML:2.1 0.0018549999999999999 0.14 AML other m 2021-02-09T04:55:16.81
IV.NRCA.HNN. ML:1.7 0.00083441725 0.0992 AML other m 2021-02-09T04:55:17.55
IV.NRCA.HHN. ML:1.8 0.00088363025 0.08 AML other m 2021-02-09T04:55:17.55
IV.MTRA.EHE. ML:1.3 0.00016204399 0.1184 AML other m 2021-02-09T04:55:20.72
IV.MTRA.EHN. ML:1.2 0.0001313289 0.2016 AML other m 2021-02-09T04:55:20.54
IV.FDMO.HHE. ML:1.1 0.00008319999999999999 0.24 AML other m 2021-02-09T04:55:21.14
IV.FDMO.HHN. ML:1.3 0.00011935 0.28 AML other m 2021-02-09T04:55:21.11
IV.CESI.HHN. ML:1.5 0.000154 0.1 AML other m 2021-02-09T04:55:23.31
IV.CESI.HHE. ML:1.1 0.000059387419999999995 0.1184 AML other m 2021-02-09T04:55:23.31
IV.GAVE.EHE. ML:1.2 0.00007110643 0.2208 AML other m 2021-02-09T04:55:25.24
IV.GAVE.EHN. ML:1.2 0.00008365149999999998 0.16 AML other m 2021-02-09T04:55:26.50
IV.MTRA.HNE. ML:1.3 0.00016141364999999999 0.1216 AML other m 2021-02-09T04:55:20.72
IV.MTRA.HNN. ML:1.3 0.0001470873 0.2208 AML other m 2021-02-09T04:55:20.53
IV.CSP1.EHE. ML:1.3 0.00010009704999999999 0.1408 AML other m 2021-02-09T04:55:23.16
IV.CSP1.EHN. ML:1.2 0.000082311445 0.2368 AML other m 2021-02-09T04:55:23.34
IV.SMA1.EHE. ML:1.0 0.000052536550000000004 0.2208 AML other m 2021-02-09T04:55:24.26
IV.SMA1.EHN. ML:1.0 0.000050396405000000005 0.2016 AML other m 2021-02-09T04:55:24.57
IV.GUMA.HNE. ML:1.5 0.00017081574999999998 1.0496 AML other m 2021-02-09T04:55:22.30
IV.GUMA.HNN. ML:1.7 0.00028864048 1.0496 AML other m 2021-02-09T04:55:20.85
IV.GUMA.HHE. ML:1.4 0.00014102975000000002 0.2784 AML other m 2021-02-09T04:55:23.14
IV.GUMA.HHN. ML:1.4 0.00015394469999999998 0.3808 AML other m 2021-02-09T04:55:23.69
IV.MF5.EHE. ML:1.5 0.00016723539 0.1792 AML other m 2021-02-09T04:55:23.40
IV.CESI.HNN. ML:1.5 0.00015889900000000002 0.8512 AML other m 2021-02-09T04:55:22.20
IV.GAVE.HNE. ML:1.3 0.0001014883125 0.1696 AML other m 2021-02-09T04:55:24.31
IV.GAVE.HNN. ML:1.6 0.00018136405 0.7712 AML other m 2021-02-09T04:55:23.17
IV.LNSS.HHE. ML:1.4 0.00011059635000000001 0.1216 AML other m 2021-02-09T04:55:24.71
IV.LNSS.HHN. ML:1.3 0.000098954085 0.2592 AML other m 2021-02-09T04:55:23.59
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