Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 07-08-2022 and time 18:49:22 (UTC) in region 4 km S Massa Martana (PG)

A magnitude ML 1.6 earthquake occured in region: 4 km S Massa Martana (PG), on

  • 07-08-2022 18:49:22 (UTC)
  • 07-08-2022 20:49:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7400, 12.5220 at 9 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
Massa Martana PG 4 3770 3770
Acquasparta TR 6 4778 8548
Montecastrilli TR 10 5022 13570
Todi PG 11 16851 30421
Giano dell'Umbria PG 12 3846 34267
Avigliano Umbro TR 12 2558 36825
San Gemini TR 14 5018 41843
Castel Ritaldi PG 16 3278 45121
Spoleto PG 18 38218 83339
Monte Castello di Vibio PG 18 1567 84906
Fratta Todina PG 18 1839 86745
Collazzone PG 19 3473 90218
Gualdo Cattaneo PG 19 6155 96373

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km NW of Terni (111501 inhabitants)
28 Km SW of Foligno (57155 inhabitants)
42 Km S of Perugia (166134 inhabitants)
49 Km NE of Viterbo (67173 inhabitants)
84 Km N of Guidonia Montecelio (88673 inhabitants)
84 Km NW of L'Aquila (69753 inhabitants)
89 Km N of Tivoli (56533 inhabitants)
94 Km NE of Civitavecchia (52991 inhabitants)
94 Km N of Roma (2864731 inhabitants)
96 Km SE of Arezzo (99543 inhabitants)
97 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 2022-08-07
18:49:22		 42.7397 12.522 9 2023-01-31
19:03:44		 Bollettino Sismico Italiano INGV 109662771
Reviewed
Rev100 		ML 1.6 2022-08-07
18:49:22		 42.7423 12.5198 9 2022-08-07
18:59:29		 Sala Sismica INGV-Roma 108252881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-08-07 18:49:22 ± 0.04
Latitude 42.7397 ± 0.0018
Longitude 12.5220 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 109662771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 290
Semi-minor axis of confidence ellipse (meter) 210
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 72
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 42
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.07285
Epicentral distance of station farthest from the epicenter (degree) 0.72575
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 72
Type of magnitude ML
Reference to an origin 109662771
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-09-13 11:11:41

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 66
Type of magnitude ML
Reference to an origin 108252881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-08-07 18:59:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2022-08-07T18:49:36.48 0.6 undecidable manual P 35 80.5638 50 0.07 44
IV.CESI.HHZ. 2022-08-07T18:49:36.70 0.6 undecidable manual S 46 42.8238 50 0.08 47
IV.CAFI.HHZ. 2022-08-07T18:49:36.12 0.3 undecidable manual P 326 79.4649 50 -0.11 66
IV.MGAB.HHZ. 2022-08-07T18:49:35.60 0.3 undecidable manual S 300 38.4282 50 0.14 71
IV.ATVO.HHZ. 2022-08-07T18:49:34.99 0.6 undecidable manual P 353 71.8725 50 -0.08 45
IV.BARO.EHE. 2022-08-07T18:49:34.31 0.6 undecidable manual P 215 66.7776 50 0.03 46
IV.ATMI.HHZ. 2022-08-07T18:49:34.61 0.3 undecidable manual P 343 69.0753 50 -0.03 68
IV.FIAM.HHZ. 2022-08-07T18:49:34.48 0.6 undecidable manual P 137 71.4729 50 -0.52 41
IV.ASSB.HHZ. 2022-08-07T18:49:34.20 0.6 undecidable manual S 18 35.4423 50 -0.44 45
IV.CSP1.EHZ. 2022-08-07T18:49:34.60 0.3 undecidable manual P 55 67.8765 50 0.16 67
IV.LATE.HHZ. 2022-08-07T18:49:33.26 0.6 undecidable manual P 257 60.1953 50 -0.01 47
IV.MC2.EHZ. 2022-08-07T18:49:33.04 0.6 undecidable manual P 70 57.498 50 0.19 45
IV.MURB.HHZ. 2022-08-07T18:49:33.04 0.3 undecidable manual P 0 58.0974 50 0.1 69
IV.GAVE.EHN. 2022-08-07T18:49:33.50 0.6 undecidable manual S 100 30.747 50 0.09 48
IV.RM33.EHZ. 2022-08-07T18:49:33.43 0.3 undecidable manual P 114 62.0934 50 -0.12 68
IV.ARRO.EHZ. 2022-08-07T18:49:32.10 0.6 undecidable manual S 132 26.6511 109 -0.05 49
IV.MML1.EHZ. 2022-08-07T18:49:32.51 0.6 undecidable manual P 41 55.3002 50 0 47
IV.SRES.HHZ. 2022-08-07T18:49:32.83 0.6 undecidable manual P 181 55.7997 50 0.24 45
IV.FDMO.HHZ. 2022-08-07T18:49:32.76 0.3 undecidable manual P 54 56.499 50 0.06 70
IV.SACS.HHZ. 2022-08-07T18:49:31.84 0.3 undecidable manual P 284 51.3153 50 -0.05 70
IV.NRCA.HHZ. 2022-08-07T18:49:31.55 0.3 undecidable manual P 78 49.3173 50 -0.04 71
IV.ATCC.EHZ. 2022-08-07T18:49:31.84 0.6 undecidable manual P 11 50.3163 50 0.1 47
IV.LNSS.HHZ. 2022-08-07T18:49:30.79 0.3 undecidable manual P 110 44.9217 50 -0.12 70
IV.CESI.HHZ. 2022-08-07T18:49:30.80 0.3 undecidable manual P 46 42.8238 50 0.21 69
IV.ASSB.HHZ. 2022-08-07T18:49:29.32 0.3 undecidable manual P 18 35.4423 50 -0.12 71
IT.FOPC.HGN. 2022-08-07T18:49:29.10 0.6 undecidable manual P 30 29.4483 50 0.57 43
IV.MGAB.HHZ. 2022-08-07T18:49:29.73 0.3 undecidable manual P 300 38.4282 50 -0.19 70
IV.ARRO.EHZ. 2022-08-07T18:49:28.11 0.3 undecidable manual P 132 26.6511 109 0.1 73
IV.CESX.HHZ. 2022-08-07T18:49:28.60 0.3 undecidable manual S 160 15.4734 121 -0.01 76
IV.GAVE.EHN. 2022-08-07T18:49:28.54 0.3 undecidable manual P 100 30.747 50 -0.19 71
IV.MOMA.HNZ. 2022-08-07T18:49:26.50 0.3 undecidable manual S 29 8.0808 139 -0.13 75
IV.CESX.HHZ. 2022-08-07T18:49:26.05 0.3 undecidable manual P 160 15.4734 121 0.09 75
IT.GNU.HGZ. 2022-08-07T18:49:26.50 0.3 undecidable manual S 29 8.0808 139 -0.13 75
IT.GNU.HGZ. 2022-08-07T18:49:24.94 0.3 undecidable manual P 29 8.0808 139 0.12 75
IV.MOMA.HNZ. 2022-08-07T18:49:24.94 0.1 undecidable manual P 29 8.0808 139 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IT.GNU.HGN. ML:0.0 0.09483549 0.1024 AML other m 2022-08-07T18:49:26.82
IV.MOMA.HNE. ML:0.0 0.0018893525 0.1408 AML other m 2022-08-07T18:49:27.19
IV.MOMA.HHE. ML:0.0 0.002171376 0.0768 AML other m 2022-08-07T18:49:27.19
IT.GNU.HGE. ML:0.0 0.15292675 0.0384 AML other m 2022-08-07T18:49:27.21
IV.MOMA.HNN. ML:0.0 0.001316051 0.1152 AML other m 2022-08-07T18:49:27.39
IV.MOMA.HHN. ML:0.0 0.0015104505 0.1024 AML other m 2022-08-07T18:49:27.39
IV.CESX.HHN. ML:0.0 0.00021710155 1.5776 AML other m 2022-08-07T18:49:28.01
IV.CESX.HHE. ML:0.0 0.00031074795 1.744 AML other m 2022-08-07T18:49:30.11
IV.ARRO.EHN. ML:0.0 0.000058952419999999996 0.5376 AML other m 2022-08-07T18:49:32.75
IV.ARRO.EHE. ML:0.0 0.0001616798 0.1408 AML other m 2022-08-07T18:49:33.82
IV.ASSB.HHN. ML:0.0 0.00010090463499999999 0.3584 AML other m 2022-08-07T18:49:34.80
IV.ASSB.HHE. ML:0.0 0.00012069653499999999 0.2816 AML other m 2022-08-07T18:49:34.96
IV.MGAB.HNN. ML:0.0 0.00023203035 0.1792 AML other m 2022-08-07T18:49:36.42
IV.MGAB.HHN. ML:0.0 0.00025702885 0.1664 AML other m 2022-08-07T18:49:36.43
IV.CESI.HHE. ML:0.0 0.0000513 0.32 AML other m 2022-08-07T18:49:37.17
IV.CESI.HHN. ML:0.0 0.0001125 0.26 AML other m 2022-08-07T18:49:37.53
IV.RM33.HNE. ML:0.0 0.000098837201 1.3088 AML other m 2022-08-07T18:49:38.25
IV.MGAB.HHE. ML:0.0 0.00018635135 0.1792 AML other m 2022-08-07T18:49:38.50
IV.LNSS.HHE. ML:0.0 0.0001458903 0.1024 AML other m 2022-08-07T18:49:38.55
IV.MGAB.HNE. ML:0.0 0.00022 0.44 AML other m 2022-08-07T18:49:38.50
IV.LNSS.HHN. ML:0.0 0.00013273825 0.2048 AML other m 2022-08-07T18:49:39.30
IV.FIAM.HNE. ML:3.3 0.0030299325 0.0288 AML other m 2022-08-07T18:49:39.37
IV.NRCA.HHE. ML:0.0 0.00015599695 0.1664 AML other m 2022-08-07T18:49:39.52
IV.NRCA.HNE. ML:0.0 0.000146517165 0.192 AML other m 2022-08-07T18:49:39.53
IV.ATCC.EHE. ML:0.0 0.00006810141999999999 0.3072 AML other m 2022-08-07T18:49:39.67
IV.FIAM.HNN. ML:2.5 0.00050938645 1.488 AML other m 2022-08-07T18:49:40.15
IV.NRCA.HHN. ML:0.0 0.00015099999999999998 0.12 AML other m 2022-08-07T18:49:40.57
IV.MML1.EHE. ML:0.0 0.0000424 0.82 AML other m 2022-08-07T18:49:40.93
IV.SACS.HNE. ML:0.0 0.00009373044999999999 1.5776 AML other m 2022-08-07T18:49:40.99
IV.SACS.HHN. ML:0.0 0.00004965 0.26 AML other m 2022-08-07T18:49:41.35
IV.CESI.HNN. ML:1.5 0.00010112388 0.4224 AML other m 2022-08-07T18:49:41.75
IV.FDMO.HHN. ML:0.0 0.00004045136 0.128 AML other m 2022-08-07T18:49:41.75
IV.FDMO.HHE. ML:0.0 0.00006644999999999999 1.52 AML other m 2022-08-07T18:49:41.96
IV.LNSS.HNE. ML:2.4 0.0008222075 1.0144 AML other m 2022-08-07T18:49:42.17
IV.MML1.HNN. ML:0.0 0.00006891419 0.32 AML other m 2022-08-07T18:49:42.87
IV.SACS.HHE. ML:0.0 0.000035964985 0.1536 AML other m 2022-08-07T18:49:42.84
IV.MC2.EHE. ML:0.0 0.0001411657025 0.2176 AML other m 2022-08-07T18:49:42.79
IV.MML1.EHN. ML:0.0 0.0000367 0.12 AML other m 2022-08-07T18:49:42.93
IV.MC2.EHN. ML:0.0 0.000154019315 1.7952 AML other m 2022-08-07T18:49:43.03
IV.ATCC.EHN. ML:0.0 0.00006347844499999999 0.3328 AML other m 2022-08-07T18:49:43.60
IV.RM33.EHE. ML:0.0 0.00006066499 0.256 AML other m 2022-08-07T18:49:43.60
IV.ATVO.HNE. ML:0.0 0.00013536490000000002 0.8576 AML other m 2022-08-07T18:49:44.51
IV.RM33.EHN. ML:0.0 0.00004035 0.44 AML other m 2022-08-07T18:49:44.19
IV.MURB.HHN. ML:0.0 0.000219 0.32 AML other m 2022-08-07T18:49:44.92
IV.MURB.HNN. ML:0.0 0.0002091751 0.3328 AML other m 2022-08-07T18:49:44.76
IV.CSP1.EHE. ML:0.0 0.000078298495 0.3456 AML other m 2022-08-07T18:49:45.27
IV.MURB.HNE. ML:0.0 0.00018248608500000003 0.2048 AML other m 2022-08-07T18:49:45.48
IV.MURB.HHE. ML:0.0 0.0001565 0.22 AML other m 2022-08-07T18:49:45.48
IV.CSP1.EHN. ML:0.0 0.00010621327999999999 0.2176 AML other m 2022-08-07T18:49:45.70
IV.ATVO.HHE. ML:0.0 0.0000322 1.5 AML other m 2022-08-07T18:49:47.18
IV.ATMI.HHN. ML:0.0 0.0001525 0.3 AML other m 2022-08-07T18:49:47.84
IV.ATVO.HHN. ML:0.0 0.000037092195000000003 0.256 AML other m 2022-08-07T18:49:48.68
IV.EL6.EHE. ML:0.0 0.000046979565000000004 0.1536 AML other m 2022-08-07T18:49:48.92
IV.ATMI.HHE. ML:0.0 0.00016999999999999999 0.7 AML other m 2022-08-07T18:49:49.63
IV.CAFI.HHE. ML:0.0 0.000017406215 0.32 AML other m 2022-08-07T18:49:49.50
IV.RM33.HNN. ML:1.8 0.00013041715 0.6144 AML other m 2022-08-07T18:49:50.21
IV.EL6.EHN. ML:0.0 0.0000375023065 0.32 AML other m 2022-08-07T18:49:50.32
IV.CAFI.HHN. ML:0.0 0.000017442981 0.2944 AML other m 2022-08-07T18:49:50.89
IV.CESI.HNE. ML:1.5 0.00009326079999999999 1.04 AML other m 2022-08-07T18:49:52.25
IV.LNSS.HNN. ML:1.9 0.00024423151500000003 0.8608 AML other m 2022-08-07T18:49:52.26
IV.FIAM.HHE. ML:0.0 0.0000283 0.66 AML other m 2022-08-07T18:49:52.97
IV.ATCC.HNE. ML:1.7 0.00012033665500000002 1.2192 AML other m 2022-08-07T18:49:52.92
IV.ATCC.HNN. ML:1.8 0.00018453515000000002 0.8448 AML other m 2022-08-07T18:49:53.06
IV.SACS.HNN. ML:1.8 0.0001569783 1.1008 AML other m 2022-08-07T18:49:53.79
IV.NRCA.HNN. ML:1.8 0.00015631481 0.704 AML other m 2022-08-07T18:49:54.20
IV.CAFI.HNE. ML:0.0 0.000040454400000000004 1.1296 AML other m 2022-08-07T18:49:57.76
IV.MML1.HNE. ML:1.7 0.0001245095 1.3984 AML other m 2022-08-07T18:49:57.72
IV.FIAM.HHN. ML:0.0 0.00002768786 0.5504 AML other m 2022-08-07T18:49:58.02
IV.ATVO.HNN. ML:1.8 0.00009847782500000001 1.3856 AML other m 2022-08-07T18:50:05.70
IV.CAFI.HNN. ML:1.4 0.00003525913999999999 0.8064 AML other m 2022-08-07T18:50:06.08
IV.SRES.HHE. ML:1.2 0.00003420661 0.1408 AML other m 2022-08-07T18:49:43.04
IV.SRES.HHN. ML:1.1 0.000031777335 0.2176 AML other m 2022-08-07T18:49:42.72
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