Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 08-02-2021 and time 09:14:52 (Italy) in region 2 km NW Ussita (MC)

A magnitude ML 1.8 earthquake occured in region: 2 km NW Ussita (MC), on

  • 08-02-2021 08:14:52 (UTC)
  • 08-02-2021 09:14:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9610, 13.1260 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
Ussita MC 2 444 444
Visso MC 4 1107 1551
Castelsantangelo sul Nera MC 8 281 1832
Acquacanina MC 9 121 1953
Fiastra MC 9 559 2512
Fiordimonte MC 9 202 2714
Bolognola MC 9 142 2856
Monte Cavallo MC 11 145 3001
Pieve Torina MC 11 1458 4459
Preci PG 12 724 5183
Pievebovigliana MC 12 866 6049
Muccia MC 15 915 6964
Sarnano MC 17 3264 10228
Montefortino FM 18 1178 11406
Montemonaco AP 18 604 12010
Sellano PG 18 1079 13089
Serravalle di Chienti MC 19 1070 14159
Norcia PG 19 4957 19116
Amandola FM 19 3629 22745
Cessapalombo MC 20 512 23257
Camerino MC 20 6974 30231

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
58 Km NW of Teramo (54892 inhabitants)
59 Km NE of Terni (111501 inhabitants)
62 Km E of Perugia (166134 inhabitants)
71 Km NW of L'Aquila (69753 inhabitants)
80 Km SW of Ancona (100861 inhabitants)
97 Km NW of Montesilvano (53738 inhabitants)
99 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
Bulletin
Rev1000 		ML 1.8 2021-02-08
08:14:52		 42.9612 13.1262 9 2021-07-12
16:54:58		 Bollettino Sismico Italiano INGV 86948451
Reviewed
Rev100 		ML 1.8 2021-02-08
08:14:52		 42.9665 13.125 9 2021-02-08
08:23:00		 Sala Sismica INGV-Roma 86927291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-08 08:14:52 ± 0.04
Latitude 42.9612 ± 0.0027
Longitude 13.1262 ± 0.0025
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86948451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 245
Semi-minor axis of confidence ellipse (meter) 200
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 27
Circular confidence region, given by single value of horizontal uncertainty (meter) 250.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 38
Number of associated phases, regardless of their use for origin computation 59
Number of defining phases 46
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
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 35
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 15
Type of magnitude ML
Reference to an origin 86948451
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-08 21:18:14

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 86927291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-08 08:23:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MSRU.HHZ. 2021-02-08T08:16:09.28 3.0 undecidable manual Pg 6.38 0
IV.SLCN.HHZ. 2021-02-08T08:15:59.97 3.0 undecidable manual Sn -9.99 0
IV.CAGR.HHZ. 2021-02-08T08:15:58.28 3.0 undecidable manual Pn -9.99 0
IV.PLLN.EHZ. 2021-02-08T08:15:45.92 3.0 positive manual Pn -9.99 0
IV.VITU.HHZ. 2021-02-08T08:15:45.73 3.0 undecidable manual Sg -2.18 0
IV.NOV.HHZ. 2021-02-08T08:15:43.80 3.0 negative manual Pn -9.99 0
IV.FIR.HHZ. 2021-02-08T08:15:41.59 3.0 undecidable manual Sn 4.22 0
OT.OT12.EHZ. 2021-02-08T08:15:38.17 3.0 undecidable manual Sn -9.99 0
IV.VIVA.HHZ. 2021-02-08T08:15:22.75 3.0 undecidable manual Sn -4.79 0
IV.FIR.HHZ. 2021-02-08T08:15:15.34 3.0 positive manual Pg -1.35 0
IV.CDRU.HHZ. 2021-02-08T08:15:15.79 3.0 undecidable manual Pn -9.99 0
IV.PTRJ.HNZ. 2021-02-08T08:15:13.21 3.0 undecidable manual Pg -6.74 0
IV.RIBO.EHZ.01 2021-02-08T08:15:12.80 3.0 undecidable manual Pn -2.99 0
IV.ARVD.HHZ. 2021-02-08T08:15:11.97 0.3 undecidable manual S 346 61.3941 50 0.46 63
IV.CAMP.HHE. 2021-02-08T08:15:09.10 0.3 undecidable manual S 154 52.503 50 -0.04 70
IV.ARRO.EHZ. 2021-02-08T08:15:09.07 0.6 undecidable manual S 215 51.5151 50 0.19 46
IV.RM33.HNE. 2021-02-08T08:15:09.04 0.6 undecidable manual S 172 50.7159 50 0.39 44
IV.TERO.HHZ. 2021-02-08T08:15:09.81 0.3 undecidable manual S 134 54.0015 50 0.26 67
IV.MOMA.HHZ. 2021-02-08T08:15:08.31 0.6 undecidable manual S 249 48.4182 50 0.26 45
IV.FOSV.HNE. 2021-02-08T08:15:07.94 0.3 undecidable manual S 322 47.3193 50 0.18 69
IV.ATCC.EHZ. 2021-02-08T08:15:07.83 0.3 undecidable manual S 302 46.62 50 0.28 68
IV.ASSB.HHZ. 2021-02-08T08:15:05.29 0.3 undecidable manual S 284 39.0276 50 -0.23 69
IV.SMA1.EHZ. 2021-02-08T08:15:05.53 0.3 undecidable manual S 155 40.4262 50 -0.38 67
IV.LNSS.HHZ. 2021-02-08T08:15:05.99 0.3 undecidable manual S 190 40.3263 50 0.1 71
IV.SNTG.HHZ. 2021-02-08T08:15:04.48 0.3 undecidable manual S 335 35.9418 50 -0.22 70
IV.GAVE.EHN. 2021-02-08T08:15:04.77 0.3 undecidable manual S 212 35.3424 50 0.23 70
IV.ARVD.HHZ. 2021-02-08T08:15:03.36 0.1 undecidable manual P 346 61.3941 50 0.06 92
IV.TERO.HHZ. 2021-02-08T08:15:02.08 0.1 undecidable manual P 134 54.0015 50 -0.09 93
IV.MF5.EHZ. 2021-02-08T08:15:02.38 0.3 undecidable manual S 84 27.2505 107 0.39 68
IV.ARRO.EHZ. 2021-02-08T08:15:01.68 0.1 undecidable manual P 215 51.5151 50 -0.1 93
IV.RM33.HNE. 2021-02-08T08:15:01.35 0.1 undecidable manual P 172 50.7159 50 -0.3 89
IV.ATCC.EHZ. 2021-02-08T08:15:01.35 0.1 undecidable manual P 302 46.62 50 0.33 89
IV.MOMA.HHZ. 2021-02-08T08:15:01.28 0.1 undecidable manual P 249 48.4182 50 -0.03 95
IV.SAP2.EHE. 2021-02-08T08:15:01.73 0.6 undecidable manual S 56 26.751 108 -0.1 49
IV.CAMP.HHE. 2021-02-08T08:15:01.85 0.1 undecidable manual P 154 52.503 50 -0.08 93
IV.FOSV.HNE. 2021-02-08T08:15:00.95 0.1 undecidable manual P 322 47.3193 50 -0.19 92
IV.GUMA.HHZ. 2021-02-08T08:15:00.14 0.3 undecidable manual S 56 20.3685 113 0.4 69
IV.SMA1.EHZ. 2021-02-08T08:14:59.80 0.1 undecidable manual P 155 40.4262 50 -0.27 91
IV.LNSS.HHZ. 2021-02-08T08:14:59.82 0.1 undecidable manual P 190 40.3263 50 -0.24 92
IV.CESI.HHZ. 2021-02-08T08:14:59.42 0.3 undecidable manual S 285 18.6702 115 0.23 72
IV.SNTG.HHZ. 2021-02-08T08:14:59.00 0.1 undecidable manual P 335 35.9418 50 -0.37 90
IV.MML1.HNE. 2021-02-08T08:14:59.83 0.3 undecidable manual S 324 21.0678 112 -0.13 73
IV.GAVE.EHN. 2021-02-08T08:14:59.29 0.1 undecidable manual P 212 35.3424 50 0.01 97
IV.ASSB.HHZ. 2021-02-08T08:14:59.65 0.1 positive manual P 284 39.0276 50 -0.19 93
IV.MMO1.EHZ. 2021-02-08T08:14:58.76 0.3 undecidable manual S 113 17.6712 116 -0.14 73
IV.MF5.EHZ. 2021-02-08T08:14:58.04 0.1 positive manual P 84 27.2505 107 0.24 94
IV.SAP2.EHE. 2021-02-08T08:14:57.78 0.3 undecidable manual P 56 26.751 108 0.07 73
IV.CSP1.EHZ. 2021-02-08T08:14:57.98 0.3 undecidable manual S 24 15.873 118 -0.34 70
IV.GUMA.HHZ. 2021-02-08T08:14:56.66 0.1 positive manual P 56 20.3685 113 0.15 97
IT.MTCL.HGZ. 2021-02-08T08:14:56.81 0.3 undecidable manual S 289 10.878 128 -0.08 75
IV.CESI.HHZ. 2021-02-08T08:14:56.45 0.1 positive manual P 285 18.6702 115 0.26 95
IV.MML1.HNE. 2021-02-08T08:14:56.62 0.1 undecidable manual P 324 21.0678 112 -0.01 100
IV.FDMO.HHZ. 2021-02-08T08:14:55.97 0.3 undecidable manual S 339 8.88 134 -0.39 71
IV.CSP1.EHZ. 2021-02-08T08:14:55.56 0.1 undecidable manual P 24 15.873 118 -0.13 98
IV.FEMA.HNZ. 2021-02-08T08:14:55.81 0.3 undecidable manual S 271 6.1938 144 0.07 76
IV.MMO1.EHZ. 2021-02-08T08:14:55.99 0.1 positive manual P 113 17.6712 116 -0.03 100
IT.MTCL.HGZ. 2021-02-08T08:14:54.95 0.1 undecidable manual P 289 10.878 128 0.09 100
IV.FDMO.HHZ. 2021-02-08T08:14:54.39 0.1 positive manual P 339 8.88 134 -0.17 99
IV.FEMA.HNZ. 2021-02-08T08:14:54.37 0.1 positive manual P 271 6.1938 144 0.17 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FEMA.HNE. ML:2.2 0.0026399999999999996 1.52 AML other m 2021-02-08T08:14:56.13
IV.FEMA.HNN. ML:2.1 0.0022249999999999995 0.22 AML other m 2021-02-08T08:14:56.02
IV.FDMO.HHE. ML:1.6 0.000569 0.3 AML other m 2021-02-08T08:14:56.14
IV.FDMO.HHN. ML:1.7 0.0007350000000000001 1.46 AML other m 2021-02-08T08:14:56.24
IV.CSP1.EHE. ML:1.9 0.0007345 0.34 AML other m 2021-02-08T08:14:58.37
IV.CSP1.EHN. ML:2.0 0.0008950000000000001 0.38 AML other m 2021-02-08T08:14:58.63
IV.NRCA.HHN. ML:1.7 0.0005899999999999999 0.12 AML other m 2021-02-08T08:14:58.79
IV.NRCA.HHE. ML:1.8 0.0006705 0.44 AML other m 2021-02-08T08:14:59.40
IV.CESI.HHE. ML:1.8 0.0004885 1.2 AML other m 2021-02-08T08:14:59.77
IV.CESI.HHN. ML:1.9 0.0007379999999999999 0.24 AML other m 2021-02-08T08:14:59.80
IV.GUMA.HHN. ML:1.8 0.000425 0.9 AML other m 2021-02-08T08:15:01.62
IV.GUMA.HHE. ML:1.9 0.0005865 0.54 AML other m 2021-02-08T08:15:03.20
IV.ASSB.HHN. ML:1.6 0.00016149999999999997 0.22 AML other m 2021-02-08T08:15:05.75
IV.ASSB.HHE. ML:1.7 0.000175 0.26 AML other m 2021-02-08T08:15:05.79
IV.MGAB.HHN. ML:1.9 0.00009725 0.42 AML other m 2021-02-08T08:15:08.36
IV.MOMA.HHE. ML:1.6 0.00010389999999999999 1 AML other m 2021-02-08T08:15:10.97
IV.MGAB.HHE. ML:2.0 0.0001305 0.98 AML other m 2021-02-08T08:15:12.66
IV.MOMA.HHN. ML:1.4 0.00007575 0.76 AML other m 2021-02-08T08:15:18.92
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