Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 14-02-2021 and time 21:52:57 (UTC) in region 1 km NE Ussita (MC)

A magnitude ML 1.4 earthquake occured in region: 1 km NE Ussita (MC), on

  • 14-02-2021 21:52:57 (UTC)
  • 14-02-2021 22:52:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9540, 13.1510 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.

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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
Ussita MC 1 444 444
Visso MC 6 1107 1551
Castelsantangelo sul Nera MC 7 281 1832
Bolognola MC 8 142 1974
Acquacanina MC 9 121 2095
Fiastra MC 9 559 2654
Fiordimonte MC 11 202 2856
Preci PG 12 724 3580
Monte Cavallo MC 13 145 3725
Pieve Torina MC 13 1458 5183
Pievebovigliana MC 13 866 6049
Sarnano MC 15 3264 9313
Montefortino FM 16 1178 10491
Montemonaco AP 16 604 11095
Muccia MC 17 915 12010
Amandola FM 17 3629 15639
Norcia PG 19 4957 20596
Montegallo AP 19 523 21119
Cessapalombo MC 19 512 21631
Sellano PG 20 1079 22710
Gualdo MC 20 815 23525

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
56 Km NW of Teramo (54892 inhabitants)
60 Km NE of Terni (111501 inhabitants)
64 Km E of Perugia (166134 inhabitants)
70 Km N of L'Aquila (69753 inhabitants)
80 Km SW of Ancona (100861 inhabitants)
95 Km NW of Montesilvano (53738 inhabitants)
100 Km S of Fano (60888 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 2021-02-14
21:52:57		 42.954 13.1513 8 2021-02-14
22:26:00		 Sala Sismica INGV-Roma 87162061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-14 21:52:57 ± 0.06
Latitude 42.9540 ± 0.0027
Longitude 13.1513 ± 0.0037
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87162061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 323
Semi-minor axis of confidence ellipse (meter) 139
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 229
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
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) 0.05036
Epicentral distance of station farthest from the epicenter (degree) 0.37682
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 87162061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-14 22:26:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-02-14T21:53:12.24 1.0 undecidable manual S 355 41.8248 50 0.15 31
IV.ASSB.HHZ. 2021-02-14T21:53:11.82 0.6 undecidable manual S 284 41.1255 50 -0.09 62
IV.MTRA.EHZ. 2021-02-14T21:53:08.54 0.6 undecidable manual S 138 29.6481 106 -0.02 65
IV.CESI.HHZ. 2021-02-14T21:53:06.00 0.3 undecidable manual S 286 20.7681 112 0.34 92
IV.ASSB.HHZ. 2021-02-14T21:53:05.79 0.3 negative manual P 284 41.1255 50 -0.19 92
IV.PF6.EHZ. 2021-02-14T21:53:05.57 0.6 undecidable manual S 10 20.6682 112 -0.05 65
IV.EL6.EHZ. 2021-02-14T21:53:05.78 1.0 undecidable manual P 355 41.8248 50 -0.3 30
IV.CSP1.EHZ. 2021-02-14T21:53:04.24 0.3 undecidable manual S 16 15.873 118 0.13 97
IV.NRCA.HHZ. 2021-02-14T21:53:03.73 0.3 undecidable manual S 193 13.6752 121 0.28 95
IV.MTRA.EHZ. 2021-02-14T21:53:03.86 0.3 positive manual P 138 29.6481 106 -0.18 94
IV.MMO1.EHZ. 2021-02-14T21:53:03.89 0.3 undecidable manual S 113 15.4734 118 -0.1 98
IV.MF5.EHZ. 2021-02-14T21:53:03.70 0.6 undecidable manual P 81 25.3524 108 0.49 59
IV.FDMO.HHZ. 2021-02-14T21:53:02.24 0.3 undecidable manual S 330 10.4784 129 -0.3 95
IV.PF6.EHZ. 2021-02-14T21:53:02.27 0.6 undecidable manual P 10 20.6682 112 -0.08 65
IV.CESI.HHZ. 2021-02-14T21:53:02.40 0.6 undecidable manual P 286 20.7681 112 0.03 66
IV.GUMA.HNZ. 2021-02-14T21:53:02.45 0.6 undecidable manual P 51 19.1697 114 0.38 61
IV.MMO1.EHZ. 2021-02-14T21:53:01.48 0.3 undecidable manual P 113 15.4734 118 0.07 98
IV.CSP1.EHZ. 2021-02-14T21:53:01.56 0.6 positive manual P 16 15.873 118 0.09 65
IV.NRCA.HHZ. 2021-02-14T21:53:01.13 0.3 positive manual P 193 13.6752 121 0.04 99
IV.MC2.EHZ. 2021-02-14T21:53:00.97 0.6 undecidable manual S 147 5.5944 146 -0.41 62
IV.FEMA.HNZ. 2021-02-14T21:53:00.20 0.6 undecidable manual P 276 8.2806 135 -0.04 67
IV.FDMO.HHZ. 2021-02-14T21:53:00.48 0.6 negative manual P 330 10.4784 129 -0.09 66
IT.MTCL.HGZ. 2021-02-14T21:53:00.94 0.6 undecidable manual P 290 13.0758 123 -0.05 66
IV.MC2.EHZ. 2021-02-14T21:52:59.82 0.3 negative manual P 147 5.5944 146 -0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:1.4 0.0003815 0.2 AML other m 2021-02-14T21:53:03.14
IV.FDMO.HHE. ML:1.2 0.0002268171 0.1408 AML other m 2021-02-14T21:53:03.72
IV.NRCA.HHN. ML:1.3 0.000237 0.16 AML other m 2021-02-14T21:53:04.02
IV.NRCA.HHE. ML:1.6 0.00046199999999999995 0.38 AML other m 2021-02-14T21:53:04.27
IV.CESI.HHN. ML:1.4 0.00016649999999999998 0.36 AML other m 2021-02-14T21:53:06.64
IV.CESI.HHE. ML:1.2 0.000115258475 0.1664 AML other m 2021-02-14T21:53:06.89
IV.NRCA.HNE. ML:1.6 0.0004251857 0.1408 AML other m 2021-02-14T21:53:04.46
IV.NRCA.HNN. ML:1.3 0.00021986454999999998 1.152 AML other m 2021-02-14T21:53:00.47
IV.CSP1.EHE. ML:1.4 0.000242396 0.2048 AML other m 2021-02-14T21:53:05.16
IV.CSP1.EHN. ML:1.6 0.00036323855 0.3712 AML other m 2021-02-14T21:53:06.17
IV.CESI.HNE. ML:1.2 0.00012206565 0.4096 AML other m 2021-02-14T21:53:07.51
IV.CESI.HNN. ML:1.4 0.000163281645 0.2944 AML other m 2021-02-14T21:53:07.76
IV.MF5.EHE. ML:1.6 0.0002584396 2.8416 AML other m 2021-02-14T21:53:19.07
IV.MF5.EHN. ML:1.6 0.00022590559999999997 2.1632 AML other m 2021-02-14T21:53:05.79
IV.MTRA.EHE. ML:1.3 0.00010898592 0.1792 AML other m 2021-02-14T21:53:09.13
IV.MTRA.EHN. ML:1.3 0.00009302538000000001 0.2304 AML other m 2021-02-14T21:53:09.54
IV.MTRA.HNE. ML:1.6 0.00017820075 0.3968 AML other m 2021-02-14T21:53:12.09
IV.MTRA.HNN. ML:1.8 0.00028581425 0.5376 AML other m 2021-02-14T21:53:12.15
IV.EL6.EHE. ML:1.8 0.0002018329 2.0096 AML other m 2021-02-14T21:53:21.83
IV.EL6.EHN. ML:1.6 0.00012939566999999998 1.8176 AML other m 2021-02-14T21:53:22.47
IV.ASSB.HHE. ML:1.1 0.0000440520315 0.9216 AML other m 2021-02-14T21:53:11.72
IV.ASSB.HHN. ML:1.1 0.000042506755 0.832 AML other m 2021-02-14T21:53:09.41
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