Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 11-01-2022 and time 10:56:21 (Italy) in region 8 km E Norcia (PG)

A magnitude ML 1.3 earthquake occured in region: 8 km E Norcia (PG), on

  • 11-01-2022 09:56:21 (UTC)
  • 11-01-2022 10:56:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7940, 13.1970 at 11 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
Norcia PG 8 4957 4957
Arquata del Tronto AP 9 1178 6135
Accumoli RI 12 667 6802
Castelsantangelo sul Nera MC 12 281 7083
Montegallo AP 12 523 7606
Montemonaco AP 16 604 8210
Preci PG 16 724 8934
Cascia PG 17 3217 12151
Ussita MC 17 444 12595
Acquasanta Terme AP 18 2916 15511
Visso MC 18 1107 16618
Amatrice RI 20 2657 19275
Cittareale RI 20 482 19757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Foligno (57155 inhabitants)
44 Km W of Teramo (54892 inhabitants)
52 Km NE of Terni (111501 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
74 Km E of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
91 Km W of Pescara (121014 inhabitants)
94 Km NW of Chieti (51815 inhabitants)
95 Km S of Ancona (100861 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
98 Km NE of Tivoli (56533 inhabitants)
99 Km E of Viterbo (67173 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 2022-01-11
09:56:21		 42.7943 13.1972 11 2022-01-11
10:05:23		 Sala Sismica INGV-Roma 99613171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-01-11 09:56:21 ± 0.1
Latitude 42.7943 ± 0.0054
Longitude 13.1972 ± 0.0086
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 99613171

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 728
Semi-minor axis of confidence ellipse (meter) 241
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 66
Circular confidence region, given by single value of horizontal uncertainty (meter) 730.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.07195
Epicentral distance of station farthest from the epicenter (degree) 0.29768
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 99613171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-01-11 10:05:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2022-01-11T09:56:32.58 0.6 undecidable manual S 1 33.0447 50 -0.24 46
IV.FDMO.HHZ. 2022-01-11T09:56:31.35 0.6 undecidable manual S 342 28.2495 50 -0.21 47
IV.LNSS.HHZ. 2022-01-11T09:56:30.56 0.3 undecidable manual S 211 24.753 50 -0.07 73
IV.FEMA.HNZ. 2022-01-11T09:56:29.55 0.6 undecidable manual S 327 22.1556 50 -0.36 46
IV.SMA1.EHZ. 2022-01-11T09:56:29.56 0.6 undecidable manual S 148 21.3675 50 -0.16 48
IV.MMO1.EHZ. 2022-01-11T09:56:28.09 0.3 undecidable manual S 42 15.6732 124 0 74
IV.MTRA.EHZ. 2022-01-11T09:56:28.27 0.6 undecidable manual S 104 16.7721 123 -0.13 48
IV.MC2.EHZ. 2022-01-11T09:56:27.55 0.6 undecidable manual S 357 12.9759 130 0.21 48
IV.CSP1.EHZ. 2022-01-11T09:56:27.25 0.1 undecidable manual P 1 33.0447 50 -0.78 79
IV.FDMO.HHZ. 2022-01-11T09:56:27.34 0.1 undecidable manual P 342 28.2495 50 0.04 95
IV.FEMA.HNZ. 2022-01-11T09:56:27.18 0.1 undecidable manual P 327 22.1556 50 0.83 76
IV.LNSS.HHZ. 2022-01-11T09:56:26.60 0.1 undecidable manual P 211 24.753 50 -0.16 96
IV.SMA1.EHZ. 2022-01-11T09:56:26.23 0.1 undecidable manual P 148 21.3675 50 -0.01 97
IV.MC2.EHZ. 2022-01-11T09:56:25.03 0.3 negative manual P 357 12.9759 130 0.17 73
IV.MMO1.EHZ. 2022-01-11T09:56:25.36 0.6 positive manual P 42 15.6732 124 0.06 49
IV.NRCA.HHZ. 2022-01-11T09:56:25.99 0.6 undecidable manual S 303 7.9809 143 -0.16 48
IV.MTRA.EHZ. 2022-01-11T09:56:25.86 0.6 negative manual P 104 16.7721 123 0.38 46
IV.NRCA.HHZ. 2022-01-11T09:56:24.24 0.1 negative manual P 303 7.9809 143 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.6 0.00048550000000000004 0.16 AML other m 2022-01-11T09:56:26.24
IV.NRCA.HHE. ML:1.6 0.0006450000000000001 0.74 AML other m 2022-01-11T09:56:26.46
IV.MC2.EHE. ML:1.0 0.000104593805 0.1408 AML other m 2022-01-11T09:56:28.81
IV.MC2.EHN. ML:1.3 0.00020447436499999999 0.1792 AML other m 2022-01-11T09:56:28.71
IV.MMO1.EHE. ML:1.2 0.00015238964999999999 0.1216 AML other m 2022-01-11T09:56:28.22
IV.MMO1.EHN. ML:1.0 0.000093143772 0.2368 AML other m 2022-01-11T09:56:29.62
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