Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 22-09-2022 and time 03:22:12 (Italy) in region 4 km SE Acquasparta (TR)

A magnitude ML 1.6 earthquake occured in region: 4 km SE Acquasparta (TR), on

  • 22-09-2022 01:22:12 (UTC)
  • 22-09-2022 03:22:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6660, 12.5870 at 8 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
Acquasparta TR 4 4778 4778
San Gemini TR 7 5018 9796
Montecastrilli TR 8 5022 14818
Terni TR 13 111501 126319
Avigliano Umbro TR 13 2558 128877
Massa Martana PG 13 3770 132647
Spoleto PG 15 38218 170865
Montefranco TR 17 1276 172141
Narni TR 17 19785 191926
Ferentillo TR 17 1913 193839
Arrone TR 18 2763 196602
Amelia TR 19 11897 208499
Giano dell'Umbria PG 19 3846 212345
Castel Ritaldi PG 19 3278 215623
Todi PG 20 16851 232474
Stroncone TR 20 4917 237391

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km NW of Terni (111501 inhabitants)
34 Km S of Foligno (57155 inhabitants)
48 Km NE of Viterbo (67173 inhabitants)
52 Km SE of Perugia (166134 inhabitants)
75 Km N of Guidonia Montecelio (88673 inhabitants)
75 Km W of L'Aquila (69753 inhabitants)
80 Km N of Tivoli (56533 inhabitants)
86 Km N of Roma (2864731 inhabitants)
91 Km NE of Civitavecchia (52991 inhabitants)
91 Km W of Teramo (54892 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 1.6 2022-09-22
01:22:12		 42.6658 12.5872 8 2024-03-01
15:28:21		 Bollettino Sismico Italiano INGV 116347231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-09-22 01:22:12 ± 0.07
Latitude 42.6658 ± 0.0045
Longitude 12.5872 ± 0.0061
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116347231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 519
Semi-minor axis of confidence ellipse (meter) 476
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 212
Circular confidence region, given by single value of horizontal uncertainty (meter) 520.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 102
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.80309
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 24
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 34
Type of magnitude ML
Reference to an origin 116347231
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-04-13 16:15:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PAOL.HHZ. 2022-09-22T01:22:50.94 3.0 negative manual Pn 1.66 0
IV.CSP1.EHZ. 2022-09-22T01:22:35.12 0.3 undecidable manual S 47 68.9754 50 0.71 57
IV.MMO1.EHZ. 2022-09-22T01:22:33.98 0.6 undecidable manual S 66 65.5899 50 0.48 42
IV.FDMO.HHZ. 2022-09-22T01:22:31.91 0.6 undecidable manual S 45 57.7977 50 0.47 43
IV.MGAB.HHZ. 2022-09-22T01:22:29.51 0.6 undecidable manual S 305 47.4192 50 0.86 37
IV.CAFI.HHZ. 2022-09-22T01:22:28.49 0.3 undecidable manual P 326 89.1441 50 0.05 66
IV.CESI.HHZ. 2022-09-22T01:22:28.75 0.6 undecidable manual S 34 45.621 50 0.57 42
IV.EL6.EHZ. 2022-09-22T01:22:27.73 0.3 undecidable manual P 29 84.6486 50 -0.01 67
IV.CSP1.EHZ. 2022-09-22T01:22:25.25 0.3 undecidable manual P 47 68.9754 50 -0.08 68
IV.SMA1.EHZ. 2022-09-22T01:22:24.10 0.3 undecidable manual P 93 61.1943 50 -0.03 70
IV.MMO1.EHZ. 2022-09-22T01:22:24.58 0.3 undecidable manual P 66 65.5899 50 -0.23 67
IV.FIAM.HHZ. 2022-09-22T01:22:24.29 0.6 undecidable manual P 135 61.8936 50 0.05 46
IV.MC2.EHZ. 2022-09-22T01:22:23.36 0.3 undecidable manual P 61 56.0994 50 0.02 71
IV.FDMO.HHZ. 2022-09-22T01:22:23.46 0.1 undecidable manual P 45 57.7977 50 -0.16 92
IV.SACS.HHZ. 2022-09-22T01:22:23.87 0.3 undecidable manual P 290 58.7967 50 0.11 69
IV.MML1.EHZ. 2022-09-22T01:22:23.42 0.3 undecidable manual P 32 58.6968 50 -0.32 66
IV.ATCC.EHZ. 2022-09-22T01:22:23.05 0.6 undecidable manual P 4 57.7977 50 -0.56 42
IV.SRES.HHZ. 2022-09-22T01:22:22.10 0.3 undecidable manual P 188 48.0186 50 0 72
IT.MTCL.HGZ. 2022-09-22T01:22:22.14 0.3 undecidable manual P 43 49.5171 50 -0.19 69
IV.RM33.EHZ. 2022-09-22T01:22:22.78 0.3 undecidable manual P 109 54.1014 50 -0.26 68
IV.NRCA.HHZ. 2022-09-22T01:22:21.53 0.3 undecidable manual P 66 46.8198 50 -0.38 67
IV.MGAB.HHZ. 2022-09-22T01:22:21.90 0.3 undecidable manual P 305 47.4192 50 -0.1 71
IV.CESI.HHZ. 2022-09-22T01:22:21.47 0.1 undecidable manual P 34 45.621 50 -0.26 92
IV.ARRO.EHZ. 2022-09-22T01:22:20.02 0.6 undecidable manual S 123 17.4714 115 0.39 47
IV.ASSB.HHZ. 2022-09-22T01:22:20.97 0.3 undecidable manual P 8 42.2244 50 -0.23 69
IV.LNSS.HHZ. 2022-09-22T01:22:20.23 0.3 undecidable manual P 101 37.629 50 -0.27 69
IT.FOPC.HGN. 2022-09-22T01:22:20.20 0.3 undecidable manual P 16 35.0427 50 0.1 72
IT.GNU.HGE. 2022-09-22T01:22:19.01 0.6 undecidable manual S 355 15.3735 118 0.03 51
IV.GAVE.EHN. 2022-09-22T01:22:18.05 0.3 undecidable manual P 83 25.2525 108 -0.19 72
IV.ARRO.EHZ. 2022-09-22T01:22:17.06 0.1 undecidable manual P 123 17.4714 115 0.27 96
IV.CESX.HHZ. 2022-09-22T01:22:16.55 0.6 undecidable manual S 180 6.3936 142 0.01 52
IT.GNU.HGE. 2022-09-22T01:22:16.39 0.3 undecidable manual P 355 15.3735 118 -0.03 76
IV.CESX.HHZ. 2022-09-22T01:22:15.18 0.1 undecidable manual P 180 6.3936 142 0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:1.8 0.0005340000000000001 0.58 AML other m 2022-09-22T01:22:20.75
IV.ARRO.EHN. ML:1.8 0.0006345000000000001 1.72 AML other m 2022-09-22T01:22:20.07
IV.LNSS.HHN. ML:1.8 0.0002505 0.42 AML other m 2022-09-22T01:22:28.66
IV.NRCA.HHN. ML:1.6 0.00011549999999999999 0.12 AML other m 2022-09-22T01:22:30.10
IV.MGAB.HHE. ML:1.9 0.00023349999999999998 0.48 AML other m 2022-09-22T01:22:30.69
IV.SRES.HHE. ML:1.4 0.00007214999999999999 0.52 AML other m 2022-09-22T01:22:30.46
IV.CESI.HHE. ML:1.5 0.00010070000000000001 1.54 AML other m 2022-09-22T01:22:30.85
IV.ASSB.HHN. ML:1.6 0.0001281 0.56 AML other m 2022-09-22T01:22:31.38
IV.ASSB.HHE. ML:1.6 0.000123 0.3 AML other m 2022-09-22T01:22:31.27
IV.NRCA.HHE. ML:1.8 0.0001915 0.14 AML other m 2022-09-22T01:22:31.13
IV.CESI.HHN. ML:1.6 0.0001185 0.54 AML other m 2022-09-22T01:22:31.62
IV.MGAB.HHN. ML:1.7 0.0001365 1.3 AML other m 2022-09-22T01:22:32.81
IV.FDMO.HHN. ML:1.5 0.00007730000000000001 0.18 AML other m 2022-09-22T01:22:33.75
IV.LNSS.HHE. ML:1.7 0.000195 0.54 AML other m 2022-09-22T01:22:33.40
IV.SRES.HHN. ML:1.4 0.00006925 0.48 AML other m 2022-09-22T01:22:33.49
IV.FDMO.HHE. ML:1.5 0.0000774 0.18 AML other m 2022-09-22T01:22:34.03
IV.RM33.EHE. ML:1.8 0.0001465 0.62 AML other m 2022-09-22T01:22:34.96
IV.SMA1.EHE. ML:1.8 0.00013550000000000001 0.44 AML other m 2022-09-22T01:22:34.99
IV.RM33.EHN. ML:1.6 0.00010155 0.78 AML other m 2022-09-22T01:22:34.91
IV.MML1.EHN. ML:1.5 0.00007015 1.24 AML other m 2022-09-22T01:22:35.33
IV.MMO1.EHE. ML:1.7 0.0000889 1.14 AML other m 2022-09-22T01:22:35.10
IV.MMO1.EHN. ML:1.7 0.0000963 1.24 AML other m 2022-09-22T01:22:35.09
IV.SMA1.EHN. ML:1.9 0.00016999999999999999 1.28 AML other m 2022-09-22T01:22:35.16
IV.CSP1.EHE. ML:2.2 0.00027600000000000004 1.46 AML other m 2022-09-22T01:22:36.09
IV.ATCC.EHN. ML:1.7 0.00011100000000000001 0.46 AML other m 2022-09-22T01:22:36.64
IV.ATCC.EHE. ML:1.8 0.000127 0.66 AML other m 2022-09-22T01:22:36.88
IV.MML1.EHE. ML:1.6 0.00008049999999999999 1.3 AML other m 2022-09-22T01:22:36.13
IV.SACS.HHE. ML:1.4 0.000051699999999999996 1.04 AML other m 2022-09-22T01:22:36.88
IV.FIAM.HHN. ML:1.4 0.00004894999999999999 1.58 AML other m 2022-09-22T01:22:38.97
IV.SACS.HHN. ML:1.4 0.000055350000000000004 0.64 AML other m 2022-09-22T01:22:39.76
IV.FIAM.HHE. ML:1.5 0.0000617 0.64 AML other m 2022-09-22T01:22:39.88
IV.CSP1.EHN. ML:2.2 0.0002605 1.26 AML other m 2022-09-22T01:22:40.15
IV.CAFI.HHE. ML:1.4 0.0000312 0.68 AML other m 2022-09-22T01:22:44.01
IV.CAFI.HHN. ML:1.4 0.000028450000000000004 0.54 AML other m 2022-09-22T01:22:47.45
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