Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 10-09-2021 and time 14:57:02 (Italy) in region 2 km NE Ussita (MC)

A magnitude ML 0.9 earthquake occured in region: 2 km NE Ussita (MC), on

  • 10-09-2021 12:57:02 (UTC)
  • 10-09-2021 14:57:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9650, 13.1520 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
Ussita MC 3 444 444
Visso MC 6 1107 1551
Bolognola MC 7 142 1693
Acquacanina MC 8 121 1814
Castelsantangelo sul Nera MC 8 281 2095
Fiastra MC 8 559 2654
Fiordimonte MC 10 202 2856
Pievebovigliana MC 12 866 3722
Pieve Torina MC 12 1458 5180
Monte Cavallo MC 13 145 5325
Preci PG 13 724 6049
Sarnano MC 15 3264 9313
Montefortino FM 16 1178 10491
Muccia MC 16 915 11406
Montemonaco AP 16 604 12010
Amandola FM 17 3629 15639
Cessapalombo MC 18 512 16151
Gualdo MC 19 815 16966
Norcia PG 20 4957 21923

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
57 Km NW of Teramo (54892 inhabitants)
61 Km NE of Terni (111501 inhabitants)
64 Km E of Perugia (166134 inhabitants)
71 Km N of L'Aquila (69753 inhabitants)
78 Km SW of Ancona (100861 inhabitants)
96 Km NW of Montesilvano (53738 inhabitants)
98 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 0.9 2021-09-10
12:57:02		 42.9653 13.1517 10 2021-09-10
13:05:34		 Sala Sismica INGV-Roma 95266201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-10 12:57:02 ± 0.14
Latitude 42.9653 ± 0.0036
Longitude 13.1517 ± 0.0049
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95266201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 420
Semi-minor axis of confidence ellipse (meter) 46
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 48
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.19785
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 95266201
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-10 13:05:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MGAB.HHZ. 2021-09-10T12:57:29.74 3.0 undecidable manual S -0.15 0
IV.MML1.EHZ. 2021-09-10T12:57:11.44 0.6 undecidable manual S 318 21.9669 114 0.2 47
IV.CESI.HNZ. 2021-09-10T12:57:11.00 0.6 undecidable manual S 282 20.5683 116 0.22 47
IV.NRCA.HHZ. 2021-09-10T12:57:09.44 0.6 undecidable manual S 192 14.9739 124 0.35 46
IV.CSP1.EHZ. 2021-09-10T12:57:09.26 0.6 undecidable manual S 17 14.6742 124 0.24 47
IV.MMO1.HNZ. 2021-09-10T12:57:09.46 0.6 undecidable manual S 117 15.9729 122 0.05 49
IV.CESI.HNZ. 2021-09-10T12:57:07.44 0.1 undecidable manual P 282 20.5683 116 0.01 98
IV.MC2.EHZ. 2021-09-10T12:57:07.27 0.6 undecidable manual S 153 6.6933 146 0.23 48
IV.FEMA.HNZ. 2021-09-10T12:57:07.06 0.6 undecidable manual S 268 8.2806 140 -0.31 47
IV.FDMO.HHZ. 2021-09-10T12:57:07.34 0.6 undecidable manual S 327 9.4794 137 -0.3 47
IV.MML1.EHZ. 2021-09-10T12:57:07.70 0.6 positive manual P 318 21.9669 114 0 49
IV.NRCA.HHZ. 2021-09-10T12:57:06.39 0.1 negative manual P 192 14.9739 124 -0.07 98
IV.CSP1.EHZ. 2021-09-10T12:57:06.46 0.3 negative manual P 17 14.6742 124 0.04 74
IV.MMO1.HNZ. 2021-09-10T12:57:06.53 0.1 undecidable manual P 117 15.9729 122 -0.11 97
IV.FEMA.HNZ. 2021-09-10T12:57:05.44 0.1 undecidable manual P 268 8.2806 140 -0.02 100
IV.FDMO.HHZ. 2021-09-10T12:57:05.50 1.0 negative manual P 327 9.4794 137 -0.12 24
IV.MC2.EHZ. 2021-09-10T12:57:04.98 0.6 undecidable manual P 153 6.6933 146 -0.29 47
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:1.0 0.000135 0.2 AML other m 2021-09-10T12:57:07.79
IV.FDMO.HHE. ML:0.9 0.00011615 0.16 AML other m 2021-09-10T12:57:07.73
IV.NRCA.HHE. ML:1.0 0.00008715 0.24 AML other m 2021-09-10T12:57:09.27
IV.CSP1.EHN. ML:1.1 0.0001264 0.42 AML other m 2021-09-10T12:57:09.93
IV.NRCA.HHN. ML:1.1 0.0001103 0.4 AML other m 2021-09-10T12:57:11.59
IV.MML1.EHE. ML:0.6 0.0000247 0.16 AML other m 2021-09-10T12:57:12.46
IV.MML1.EHN. ML:0.6 0.0000314 0.88 AML other m 2021-09-10T12:57:12.95
IV.CSP1.EHE. ML:0.9 0.0000838 0.48 AML other m 2021-09-10T12:57:13.23
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