Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 21-07-2022 and time 03:40:18 (Italy) in region 4 km NW Norcia (PG)

A magnitude ML 1.1 earthquake occured in region: 4 km NW Norcia (PG), on

  • 21-07-2022 01:40:18 (UTC)
  • 21-07-2022 03:40:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8130, 13.0500 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
Norcia PG 4 4957 4957
Preci PG 8 724 5681
Cascia PG 11 3217 8898
Cerreto di Spoleto PG 11 1075 9973
Castelsantangelo sul Nera MC 13 281 10254
Sellano PG 13 1079 11333
Visso MC 14 1107 12440
Poggiodomo PG 15 117 12557
Vallo di Nera PG 16 364 12921
Ussita MC 16 444 13365
Sant'Anatolia di Narco PG 20 564 13929
Monteleone di Spoleto PG 20 599 14528

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km SE of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
56 Km W of Teramo (54892 inhabitants)
59 Km NW of L'Aquila (69753 inhabitants)
63 Km SE of Perugia (166134 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
94 Km N of Guidonia Montecelio (88673 inhabitants)
96 Km W of Montesilvano (53738 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
97 Km SW of Ancona (100861 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 1.1 2022-07-21
01:40:18		 42.8128 13.0502 10 2022-07-21
01:45:55		 Sala Sismica INGV-Roma 107507661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-07-21 01:40:18 ± 0.06
Latitude 42.8128 ± 0.0036
Longitude 13.0502 ± 0.0061
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 107507661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 464
Semi-minor axis of confidence ellipse (meter) 279
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 112
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.57197
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 107507661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-07-21 01:45:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CING.HHZ. 2022-07-21T01:40:38.26 0.3 undecidable manual S 11 63.492 50 0.43 65
IV.EL6.EHZ. 2022-07-21T01:40:36.84 1.0 undecidable manual S 4 57.3981 50 0.63 20
IV.ATCC.EHZ. 2022-07-21T01:40:35.80 0.3 undecidable manual S 321 53.0025 50 0.77 59
IV.SNTG.HHZ. 2022-07-21T01:40:33.83 0.3 undecidable manual S 350 49.8168 50 -0.35 68
IV.MF5.EHZ. 2022-07-21T01:40:31.83 0.3 undecidable manual S 60 38.5281 50 0.68 63
IV.ASSB.HHZ. 2022-07-21T01:40:31.86 0.6 undecidable manual S 309 40.7259 50 0.11 48
IV.RM33.EHZ. 2022-07-21T01:40:30.11 0.3 undecidable manual S 158 36.2415 50 -0.44 68
IV.GUMA.HHZ. 2022-07-21T01:40:30.82 0.6 undecidable manual S 40 36.1416 50 0.31 47
IV.ARRO.EHZ. 2022-07-21T01:40:29.64 0.6 undecidable manual S 222 34.743 50 -0.51 45
IV.MML1.EHZ. 2022-07-21T01:40:29.73 0.6 undecidable manual S 349 33.9438 50 -0.2 48
IV.CSP1.EHZ. 2022-07-21T01:40:29.41 0.3 undecidable manual S 22 33.4443 50 -0.38 70
IV.CING.HHZ. 2022-07-21T01:40:29.67 1.0 undecidable manual P 11 63.492 50 0.16 23
IV.EL6.EHZ. 2022-07-21T01:40:28.47 0.1 undecidable manual P 4 57.3981 50 -0.1 94
IV.SNTG.HHZ. 2022-07-21T01:40:27.40 1.0 negative manual P 350 49.8168 50 0 24
IV.ATCC.EHZ. 2022-07-21T01:40:27.82 0.6 positive manual P 321 53.0025 50 -0.07 48
IV.TERO.HHZ. 2022-07-21T01:40:27.34 3.0 undecidable manual P -0.17 0
IV.FDMO.HHZ. 2022-07-21T01:40:26.99 0.6 undecidable manual S 7 24.9528 112 -0.48 46
IV.CESI.HHZ. 2022-07-21T01:40:26.93 0.6 undecidable manual S 331 24.3534 112 -0.34 48
IV.MMO1.EHZ. 2022-07-21T01:40:26.74 0.6 undecidable manual S 67 24.4533 112 -0.56 45
IV.LNSS.HHZ. 2022-07-21T01:40:26.95 0.6 undecidable manual S 182 23.2545 113 0.03 51
IV.GUMA.HHZ. 2022-07-21T01:40:25.41 1.0 undecidable manual P 40 36.1416 50 0.13 24
IV.ASSB.HHZ. 2022-07-21T01:40:25.78 0.1 positive manual P 309 40.7259 50 -0.22 95
IV.GAVE.EHZ. 2022-07-21T01:40:25.65 0.6 undecidable manual S 224 18.4704 118 0.25 49
IV.ARRO.EHZ. 2022-07-21T01:40:25.13 0.6 undecidable manual P 222 34.743 50 0.05 49
IV.MF5.EHZ. 2022-07-21T01:40:25.79 1.0 undecidable manual P 60 38.5281 50 0.14 24
IV.RM33.EHZ. 2022-07-21T01:40:25.18 0.6 negative manual P 158 36.2415 50 -0.13 49
IV.MML1.EHZ. 2022-07-21T01:40:24.73 1.0 negative manual P 349 33.9438 50 -0.22 24
IV.MC2.EHZ. 2022-07-21T01:40:24.78 0.6 undecidable manual S 46 15.6732 122 0.2 50
IV.CSP1.EHZ. 2022-07-21T01:40:24.75 0.6 positive manual P 22 33.4443 50 -0.12 49
IV.MMO1.EHZ. 2022-07-21T01:40:23.19 0.3 negative manual P 67 24.4533 112 -0.24 73
IV.LNSS.HHZ. 2022-07-21T01:40:23.27 0.6 undecidable manual P 182 23.2545 113 0.06 50
IV.FDMO.HHZ. 2022-07-21T01:40:23.31 0.3 positive manual P 7 24.9528 112 -0.22 73
IV.CESI.HHZ. 2022-07-21T01:40:23.32 0.1 positive manual P 331 24.3534 112 -0.09 100
IV.MC2.EHZ. 2022-07-21T01:40:22.07 0.1 negative manual P 46 15.6732 122 0.21 99
IV.GAVE.EHZ. 2022-07-21T01:40:22.70 0.1 negative manual P 224 18.4704 118 0.37 95
IV.NRCA.HNZ. 2022-07-21T01:40:22.10 0.6 undecidable manual S 66 5.6943 150 0 53
IV.NRCA.HNZ. 2022-07-21T01:40:20.69 0.1 negative manual P 66 5.6943 150 0.26 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.4 0.00039600000000000003 0.46 AML other m 2022-07-21T01:40:22.61
IV.NRCA.HHN. ML:1.5 0.0005 1.44 AML other m 2022-07-21T01:40:23.00
IV.GAVE.EHE. ML:1.2 0.00013000000000000002 0.62 AML other m 2022-07-21T01:40:26.31
IV.GAVE.EHN. ML:1.1 0.0001115 0.68 AML other m 2022-07-21T01:40:26.40
IV.FDMO.HHE. ML:1.3 0.00010899999999999999 0.18 AML other m 2022-07-21T01:40:27.20
IV.MMO1.EHE. ML:1.2 0.00008499999999999999 0.2 AML other m 2022-07-21T01:40:27.13
IV.FDMO.HHN. ML:1.2 0.00010314999999999999 0.22 AML other m 2022-07-21T01:40:27.33
IV.LNSS.HHE. ML:1.4 0.00016 0.16 AML other m 2022-07-21T01:40:27.39
IV.CESI.HHE. ML:0.9 0.00004415 0.14 AML other m 2022-07-21T01:40:27.65
IV.CESI.HHN. ML:1.2 0.00008785 0.3 AML other m 2022-07-21T01:40:27.66
IV.LNSS.HHN. ML:1.3 0.00013450000000000002 1.14 AML other m 2022-07-21T01:40:27.76
IV.MMO1.EHN. ML:1.2 0.0000886 1.54 AML other m 2022-07-21T01:40:27.22
IV.MML1.EHN. ML:0.8 0.00002395 0.28 AML other m 2022-07-21T01:40:30.17
IV.MML1.EHE. ML:0.7 0.00002165 0.68 AML other m 2022-07-21T01:40:30.20
IV.GUMA.HHE. ML:1.3 0.00007280000000000001 1.4 AML other m 2022-07-21T01:40:30.87
IV.RM33.EHE. ML:0.9 0.000029999999999999997 0.12 AML other m 2022-07-21T01:40:32.09
IV.ASSB.HHE. ML:0.9 0.000026249999999999998 0.3 AML other m 2022-07-21T01:40:33.11
IV.RM33.EHN. ML:0.8 0.0000227 0.8 AML other m 2022-07-21T01:40:33.67
IV.ASSB.HHN. ML:0.9 0.00002695 0.18 AML other m 2022-07-21T01:40:33.65
IV.GUMA.HHN. ML:1.2 0.0000563 0.6 AML other m 2022-07-21T01:40:34.43
IV.TERO.HHN. ML:1.1 0.000030550000000000004 0.08 AML other m 2022-07-21T01:40:34.69
IV.TERO.HHE. ML:1.0 0.00002325 0.6 AML other m 2022-07-21T01:40:35.42
IV.ATCC.EHN. ML:0.8 0.000015949999999999998 0.3 AML other m 2022-07-21T01:40:36.02
IV.ATCC.EHE. ML:0.9 0.0000183 1.08 AML other m 2022-07-21T01:40:36.15
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