Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 27-02-2021 and time 00:52:38 (Italy) in region 7 km SE Castelsantangelo sul Nera (MC)

A magnitude ML 1.3 earthquake occured in region: 7 km SE Castelsantangelo sul Nera (MC), on

  • 26-02-2021 23:52:38 (UTC)
  • 27-02-2021 00:52:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8560, 13.2240 at 8 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 7 281 281
Montegallo AP 9 523 804
Montemonaco AP 10 604 1408
Arquata del Tronto AP 11 1178 2586
Ussita MC 12 444 3030
Norcia PG 13 4957 7987
Montefortino FM 14 1178 9165
Visso MC 14 1107 10272
Preci PG 15 724 10996
Bolognola MC 16 142 11138
Amandola FM 18 3629 14767
Accumoli RI 18 667 15434
Acquasanta Terme AP 18 2916 18350
Comunanza AP 19 3166 21516
Acquacanina MC 20 121 21637
Palmiano AP 20 196 21833

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Foligno (57155 inhabitants)
45 Km W of Teramo (54892 inhabitants)
57 Km NE of Terni (111501 inhabitants)
58 Km N of L'Aquila (69753 inhabitants)
73 Km E of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
88 Km S of Ancona (100861 inhabitants)
92 Km W of Pescara (121014 inhabitants)
96 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 2021-02-26
23:52:38		 42.856 13.2238 8 2021-02-26
23:58:22		 Sala Sismica INGV-Roma 87522251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-26 23:52:38 ± 0.07
Latitude 42.8560 ± 0.0027
Longitude 13.2238 ± 0.0049
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87522251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 377
Semi-minor axis of confidence ellipse (meter) 68
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 101
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.55308
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 87522251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-26 23:58:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FOSV.EHZ. 2021-02-26T23:52:59.11 3.0 undecidable manual S 323 61.3941 50 0.88 0
IV.EL6.EHZ. 2021-02-26T23:52:56.73 0.6 undecidable manual S 349 53.4021 50 0.63 40
IV.CRTC.HHZ. 2021-02-26T23:52:55.41 3.0 negative manual P -2.55 0
IV.TERO.HHZ. 2021-02-26T23:52:52.53 0.6 undecidable manual S 130 40.3263 50 -0.07 48
IV.GAVE.EHZ. 2021-02-26T23:52:50.27 0.6 undecidable manual S 236 32.4453 104 -0.02 49
IV.LNSS.HHZ. 2021-02-26T23:52:50.60 0.6 undecidable manual S 208 31.8459 104 0.51 44
IV.CESI.HHZ. 2021-02-26T23:52:49.84 0.6 undecidable manual S 303 30.747 105 0.11 48
IV.FOSV.EHZ. 2021-02-26T23:52:49.80 1.0 undecidable manual P 323 61.3941 50 -0.18 22
IV.ATCC.EHZ. 2021-02-26T23:52:49.61 1.0 positive manual P 308 59.7957 50 -0.12 23
IV.SMA1.EHZ. 2021-02-26T23:52:48.12 0.6 undecidable manual S 160 26.6511 107 -0.23 47
IV.EL6.EHZ. 2021-02-26T23:52:48.56 0.1 undecidable manual P 349 53.4021 50 -0.18 91
IV.GUMA.HHZ. 2021-02-26T23:52:48.24 0.6 undecidable manual S 21 24.6531 108 0.54 44
IV.MF5.EHZ. 2021-02-26T23:52:48.00 0.6 undecidable manual S 53 24.0537 108 0.48 45
IV.CSP1.EHZ. 2021-02-26T23:52:47.98 0.6 undecidable manual S 357 26.2515 107 -0.24 47
IV.MNTT.EHZ. 2021-02-26T23:52:46.82 3.0 positive manual P 0.34 0
IV.TERO.HHZ. 2021-02-26T23:52:46.20 1.0 positive manual P 130 40.3263 50 -0.52 22
IV.GAVE.EHZ. 2021-02-26T23:52:45.20 0.6 undecidable manual P 236 32.4453 104 -0.19 47
IV.LNSS.HHZ. 2021-02-26T23:52:45.26 1.0 undecidable manual P 208 31.8459 104 -0.02 24
IV.MTRA.EHZ. 2021-02-26T23:52:45.99 0.6 undecidable manual S 128 17.871 114 0.49 45
IV.CSP1.EHZ. 2021-02-26T23:52:44.25 0.6 undecidable manual P 357 26.2515 107 0.05 49
IV.SMA1.EHZ. 2021-02-26T23:52:44.06 0.6 negative manual P 160 26.6511 107 -0.21 47
IV.CESI.HHZ. 2021-02-26T23:52:44.80 0.3 undecidable manual P 303 30.747 105 -0.27 70
IV.GUMA.HHZ. 2021-02-26T23:52:44.06 0.3 positive manual P 21 24.6531 108 0.16 72
IV.MF5.EHZ. 2021-02-26T23:52:43.55 1.0 positive manual P 53 24.0537 108 -0.25 24
IV.NRCA.HHZ. 2021-02-26T23:52:43.30 0.6 undecidable manual S 254 9.2796 131 0.34 48
IV.MC2.EHZ. 2021-02-26T23:52:42.14 0.6 undecidable manual S 335 6.7932 140 -0.21 49
IV.MTRA.EHZ. 2021-02-26T23:52:42.73 1.0 undecidable manual P 128 17.871 114 0.1 25
IV.MMO1.EHZ. 2021-02-26T23:52:42.66 0.6 undecidable manual S 60 9.6792 130 -0.41 47
IV.MMO1.EHZ. 2021-02-26T23:52:41.01 0.3 positive manual P 60 9.6792 130 -0.22 73
IV.NRCA.HHZ. 2021-02-26T23:52:41.26 0.1 positive manual P 254 9.2796 131 0.1 100
IV.MC2.EHZ. 2021-02-26T23:52:40.65 0.1 negative manual P 335 6.7932 140 -0.16 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.7 0.0008129999999999999 0.46 AML other m 2021-02-26T23:52:43.39
IV.NRCA.HNE. ML:1.7 0.0008029999999999999 0.46 AML other m 2021-02-26T23:52:43.39
IV.NRCA.HHN. ML:2.0 0.0015049999999999998 0.14 AML other m 2021-02-26T23:52:43.70
IV.NRCA.HNN. ML:2.0 0.0014199999999999998 0.14 AML other m 2021-02-26T23:52:43.77
IV.MTRA.EHN. ML:1.3 0.000164 0.64 AML other m 2021-02-26T23:52:47.57
IV.MTRA.EHE. ML:1.1 0.00010195 0.3 AML other m 2021-02-26T23:52:47.53
IV.GUMA.HHE. ML:1.6 0.000236 0.58 AML other m 2021-02-26T23:52:48.56
IV.GUMA.HHN. ML:1.4 0.000153 0.54 AML other m 2021-02-26T23:52:48.86
IV.LNSS.HHN. ML:1.0 0.00005205 0.42 AML other m 2021-02-26T23:52:50.55
IV.CESI.HHE. ML:1.0 0.00004654999999999999 1.28 AML other m 2021-02-26T23:52:51.79
IV.CESI.HHN. ML:1.1 0.00006615 0.4 AML other m 2021-02-26T23:52:51.99
IV.LNSS.HHE. ML:1.0 0.00004910000000000001 0.16 AML other m 2021-02-26T23:52:52.16
IV.TERO.HHE. ML:0.9 0.0000306 0.26 AML other m 2021-02-26T23:52:53.30
IV.TERO.HHN. ML:0.9 0.00003145 0.5 AML other m 2021-02-26T23:52:53.37
IV.SMA1.EHN. ML:1.0 0.00004765 1.62 AML other m 2021-02-26T23:52:53.84
IV.SMA1.EHE. ML:0.9 0.00004495 0.5 AML other m 2021-02-26T23:52:54.57
IV.MNTT.EHN. ML:1.4 0.0000927 0.18 AML other m 2021-02-26T23:52:55.71
IV.MNTT.EHE. ML:1.5 0.000126 1.36 AML other m 2021-02-26T23:52:55.73
IV.EL6.EHN. ML:1.3 0.000049600000000000006 0.24 AML other m 2021-02-26T23:52:58.26
IV.EL6.EHE. ML:1.2 0.00003985 0.64 AML other m 2021-02-26T23:52:58.56
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