Earthquake with magnitude of ML 0.1 on date 27-03-2021 and time 22:35:44 (Italy) in region 1 km S Ussita (MC)

A magnitude ML 0.1 earthquake occured in region: 1 km S Ussita (MC), on

  • 27-03-2021 21:35:44 (UTC)
  • 27-03-2021 22:35:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.94, 13.14 at 11 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.

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 4 1107 1551
Castelsantangelo sul Nera MC 5 281 1832
Bolognola MC 10 142 1974
Preci PG 11 724 2698
Acquacanina MC 11 121 2819
Fiastra MC 11 559 3378
Fiordimonte MC 12 202 3580
Monte Cavallo MC 13 145 3725
Pieve Torina MC 14 1458 5183
Pievebovigliana MC 14 866 6049
Montemonaco AP 16 604 6653
Montefortino FM 17 1178 7831
Norcia PG 17 4957 12788
Sarnano MC 17 3264 16052
Muccia MC 18 915 16967
Sellano PG 18 1079 18046
Amandola FM 18 3629 21675
Montegallo AP 19 523 22198

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
56 Km NW of Teramo (54892 inhabitants)
58 Km NE of Terni (111501 inhabitants)
64 Km E of Perugia (166134 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
95 Km NW of Montesilvano (53738 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 0.1 2021-03-27
21:35:44
42.9397 13.1398 11 2021-07-12
16:55:08
Bollettino Sismico Italiano INGV 89426841
Reviewed
Rev100
ML 0.1 2021-03-27
21:35:44
42.9377 13.146 11 2021-03-27
21:42:27
Sala Sismica INGV-Roma 88534011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-27 21:35:44 ± 0.09
Latitude 42.9397 ± 0.0054
Longitude 13.1398 ± 0.0086
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89426841

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 685
Semi-minor axis of confidence ellipse (meter) 560
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 690
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 13
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
Epicentral distance of station farthest from the epicenter (degree) 0.24641
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:0.1

Field Value
Value 0.1
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 89426841
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-24 08:25:16

ML:0.1

Field Value
Value 0.1
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 88534011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-27 21:42:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TREG.EHZ. 2021-03-27T21:37:05.48 3.0 undecidable manual Sg 3.06 0
ST.CARE.EHZ. 2021-03-27T21:36:50.95 3.0 undecidable manual Pg 11.24 0
IT.GLNS.HNZ. 2021-03-27T21:36:27.56 3.0 undecidable manual Sn -0.95 0
IV.MCIV.CHZ. 2021-03-27T21:36:19.67 3.0 undecidable manual Sn -3.25 0
IV.FIR.HHZ. 2021-03-27T21:36:15.29 3.0 undecidable manual Pg 4.89 0
IV.CRTC.HHZ. 2021-03-27T21:35:54.58 3.0 negative manual Pn -2.93 0
IV.MML1.HNZ. 2021-03-27T21:35:53.27 0.3 undecidable manual S 325 0.2131 50 -0.04 98
IV.CESI.HHZ. 2021-03-27T21:35:52.59 0.6 undecidable manual S 291 0.1844 50 0.14 65
IV.CSP1.EHZ. 2021-03-27T21:35:51.73 3.0 undecidable manual S 0.17 0
IV.MMO1.EHZ. 2021-03-27T21:35:50.71 0.6 undecidable manual S 106 0.143 124 -0.41 61
IV.SAP2.EHZ. 2021-03-27T21:35:50.56 0.6 undecidable manual P 50 0.2464 50 0.42 60
IV.NRCA.HHN. 2021-03-27T21:35:49.97 0.3 undecidable manual S 190 0.1079 132 -0.09 99
IV.FDMO.HHZ. 2021-03-27T21:35:49.86 0.3 undecidable manual S 338 0.1043 133 -0.1 99
IV.CESI.HHZ. 2021-03-27T21:35:49.05 0.3 undecidable manual P 291 0.1844 50 -0.04 99
IV.MML1.HNZ. 2021-03-27T21:35:49.40 0.6 undecidable manual P 325 0.2131 50 -0.18 64
IV.MC2.EHZ. 2021-03-27T21:35:48.99 0.3 undecidable manual S 128 0.0459 155 0.39 94
IV.MMO1.EHZ. 2021-03-27T21:35:48.02 0.6 negative manual P 106 0.143 124 -0.29 63
IV.CSP1.EHZ. 2021-03-27T21:35:48.44 3.0 undecidable manual P -0.08 0
IV.FDMO.HHZ. 2021-03-27T21:35:47.64 0.6 undecidable manual P 338 0.1043 133 0 67
IV.MC2.EHZ. 2021-03-27T21:35:47.15 0.6 positive manual P 128 0.0459 155 0.29 64
IV.NRCA.HHN. 2021-03-27T21:35:47.65 0.3 undecidable manual P 190 0.1079 132 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:0.1 1.51568265E-5 0.1536 AML other m 2021-03-27T21:35:50.14
IV.FDMO.HHE. ML:0 1.16323545E-5 0.1024 AML other m 2021-03-27T21:35:50.37
IV.CESI.HHE. ML:0.2 1.10325205E-5 0.4352 AML other m 2021-03-27T21:35:52.70
IV.CESI.HHN. ML:0.2 1.15832695E-5 0.2176 AML other m 2021-03-27T21:35:52.85
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