Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 26-01-2022 and time 21:28:23 (Italy) in region 2 km NE Norcia (PG)

A magnitude ML 1.1 earthquake occured in region: 2 km NE Norcia (PG), on

  • 26-01-2022 20:28:23 (UTC)
  • 26-01-2022 21:28:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8090, 13.1040 at 10 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
Norcia PG 2 4957 4957
Preci PG 10 724 5681
Castelsantangelo sul Nera MC 11 281 5962
Cascia PG 12 3217 9179
Visso MC 14 1107 10286
Cerreto di Spoleto PG 15 1075 11361
Ussita MC 15 444 11805
Arquata del Tronto AP 16 1178 12983
Sellano PG 17 1079 14062
Accumoli RI 17 667 14729
Poggiodomo PG 17 117 14846
Montegallo AP 19 523 15369

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
46 Km NE of Terni (111501 inhabitants)
52 Km W of Teramo (54892 inhabitants)
56 Km NW of L'Aquila (69753 inhabitants)
67 Km SE of Perugia (166134 inhabitants)
92 Km W of Montesilvano (53738 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
99 Km W of Pescara (121014 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 1.1 2022-01-26
20:28:23		 42.8087 13.1042 10 2022-07-08
12:33:27		 Bollettino Sismico Italiano INGV 100703701
Reviewed
Rev100 		ML 1.0 2022-01-26
20:28:23		 42.81 13.1168 11 2022-01-26
21:00:54		 Sala Sismica INGV-Roma 100211491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-01-26 20:28:23 ± 0.05
Latitude 42.8087 ± 0.0027
Longitude 13.1042 ± 0.0049
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 100703701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 357
Semi-minor axis of confidence ellipse (meter) 174
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 277
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.02608
Epicentral distance of station farthest from the epicenter (degree) 0.41099
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 100211491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-01-26 21:00:54

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 100703701
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-07 10:02:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MF5.EHZ. 2022-01-26T20:28:35.98 0.3 undecidable manual S 55 35.0427 50 0.39 67
IV.RM33.EHZ. 2022-01-26T20:28:35.58 0.3 undecidable manual S 165 34.4433 50 0.16 71
IV.MML1.EHZ. 2022-01-26T20:28:35.73 0.3 undecidable manual S 342 35.5422 50 0.03 73
IV.GUMA.HHZ. 2022-01-26T20:28:35.55 0.3 undecidable manual S 34 33.8439 50 0.28 69
IV.CSP1.EHZ. 2022-01-26T20:28:34.91 0.1 undecidable manual S 15 32.4453 50 0.01 98
IV.SMA1.EHZ. 2022-01-26T20:28:33.42 0.1 undecidable manual S 136 27.2505 50 -0.09 97
IV.CESI.HHZ. 2022-01-26T20:28:33.29 0.1 undecidable manual S 323 27.1506 50 -0.19 95
IV.LNSS.HHZ. 2022-01-26T20:28:32.20 0.1 undecidable manual S 193 23.3544 114 -0.25 94
IV.FDMO.HHZ. 2022-01-26T20:28:32.72 0.1 undecidable manual S 357 25.3524 50 -0.27 94
IV.MOMA.HHZ. 2022-01-26T20:28:32.10 0.1 undecidable manual P 269 43.4232 50 0.29 90
IV.MMO1.EHZ. 2022-01-26T20:28:31.19 0.1 undecidable manual S 61 20.7681 116 -0.42 91
IV.TERO.HHZ. 2022-01-26T20:28:31.85 0.1 undecidable manual P 117 45.621 50 -0.29 90
IV.GAVE.EHZ. 2022-01-26T20:28:31.85 0.1 undecidable manual S 233 21.4674 116 0.02 99
IV.MML1.EHZ. 2022-01-26T20:28:30.43 0.1 undecidable manual P 342 35.5422 50 -0.15 94
IV.GUMA.HHZ. 2022-01-26T20:28:30.56 3.0 negative manual P 34 33.8439 50 0.23 0
IV.CSP1.EHZ. 2022-01-26T20:28:30.00 0.1 undecidable manual P 15 32.4453 50 -0.12 96
IV.MF5.EHZ. 2022-01-26T20:28:30.88 0.1 undecidable manual P 55 35.0427 50 0.37 90
IV.FEMA.HNE. 2022-01-26T20:28:30.53 0.1 undecidable manual S 345 17.5713 120 -0.12 98
IV.RM33.EHZ. 2022-01-26T20:28:30.48 0.1 undecidable manual P 165 34.4433 50 0.06 96
IV.SMA1.EHZ. 2022-01-26T20:28:29.19 0.1 undecidable manual P 136 27.2505 50 -0.13 96
IV.CESI.HHZ. 2022-01-26T20:28:29.24 0.1 positive manual P 323 27.1506 50 -0.05 98
IV.MC2.EHZ. 2022-01-26T20:28:29.72 0.1 undecidable manual S 31 13.3755 128 0.3 95
IV.MMO1.EHZ. 2022-01-26T20:28:28.08 0.1 positive manual P 61 20.7681 116 -0.14 97
IV.GAVE.EHZ. 2022-01-26T20:28:28.50 0.1 positive manual P 233 21.4674 116 0.16 97
IT.MTCL.HGZ. 2022-01-26T20:28:28.21 0.3 undecidable manual P 338 22.2555 115 -0.28 70
IV.LNSS.HHZ. 2022-01-26T20:28:28.81 0.1 undecidable manual P 193 23.3544 114 0.11 97
IV.FDMO.HHZ. 2022-01-26T20:28:28.85 0.1 undecidable manual P 357 25.3524 50 -0.16 96
IV.FEMA.HNE. 2022-01-26T20:28:27.96 0.1 undecidable manual P 345 17.5713 120 0.29 94
IV.NRCA.HHZ. 2022-01-26T20:28:27.14 0.1 undecidable manual S 17 2.8971 164 -0.14 100
IV.MC2.EHZ. 2022-01-26T20:28:27.21 0.1 negative manual P 31 13.3755 128 0.25 96
IV.NRCA.HHZ. 2022-01-26T20:28:25.93 0.1 undecidable manual P 17 2.8971 164 0.21 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MC2.EHN. ML:1.5 0.00033850000000000004 0.28 AML other m 2022-01-26T20:28:32.07
IV.GAVE.EHN. ML:1.2 0.000108 0.76 AML other m 2022-01-26T20:28:32.60
IV.MC2.EHE. ML:1.4 0.0002785 0.3 AML other m 2022-01-26T20:28:32.52
IV.MMO1.EHE. ML:1.1 0.00009054999999999999 1.14 AML other m 2022-01-26T20:28:32.38
IV.MMO1.EHN. ML:1.0 0.00007585 0.48 AML other m 2022-01-26T20:28:32.24
IV.GAVE.EHE. ML:1.3 0.0001235 1.2 AML other m 2022-01-26T20:28:32.16
IV.FDMO.HHN. ML:0.9 0.0000507 0.96 AML other m 2022-01-26T20:28:33.82
IV.LNSS.HHN. ML:1.1 0.0000839 0.14 AML other m 2022-01-26T20:28:33.34
IV.FDMO.HHE. ML:0.9 0.000052000000000000004 0.92 AML other m 2022-01-26T20:28:33.42
IV.LNSS.HHE. ML:1.1 0.0000804 0.12 AML other m 2022-01-26T20:28:33.53
IV.CESI.HHE. ML:1.0 0.00005345 1 AML other m 2022-01-26T20:28:33.60
IV.CESI.HHN. ML:1.2 0.00008155 1.5 AML other m 2022-01-26T20:28:34.77
IV.SMA1.EHE. ML:0.9 0.000047 1.48 AML other m 2022-01-26T20:28:36.98
IV.SMA1.EHN. ML:0.9 0.00003835 0.3 AML other m 2022-01-26T20:28:37.91
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