Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 28-07-2022 and time 21:53:54 (Italy) in region 4 km S Preci (PG)

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

  • 28-07-2022 19:53:54 (UTC)
  • 28-07-2022 21:53:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8410, 13.0320 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
Preci PG 4 724 724
Norcia PG 7 4957 5681
Cerreto di Spoleto PG 10 1075 6756
Sellano PG 10 1079 7835
Visso MC 11 1107 8942
Castelsantangelo sul Nera MC 12 281 9223
Cascia PG 14 3217 12440
Ussita MC 15 444 12884
Vallo di Nera PG 16 364 13248
Poggiodomo PG 16 117 13365
Monte Cavallo MC 17 145 13510
Sant'Anatolia di Narco PG 20 564 14074

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Foligno (57155 inhabitants)
44 Km NE of Terni (111501 inhabitants)
59 Km W of Teramo (54892 inhabitants)
60 Km SE of Perugia (166134 inhabitants)
62 Km NW of L'Aquila (69753 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
95 Km SW of Ancona (100861 inhabitants)
97 Km N of Guidonia Montecelio (88673 inhabitants)
98 Km W of Montesilvano (53738 inhabitants)
99 Km N of Tivoli (56533 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 2022-07-28
19:53:54		 42.8408 13.0315 10 2022-07-28
20:00:24		 Sala Sismica INGV-Roma 107809881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-07-28 19:53:54 ± 0.04
Latitude 42.8408 ± 0.0027
Longitude 13.0315 ± 0.0049
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 107809881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 396
Semi-minor axis of confidence ellipse (meter) 80
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) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.32645
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 107809881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-07-28 20:00:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
SI.ROSI.HHZ. 2022-07-28T19:55:38.30 3.0 undecidable manual Sn 3.32 0
IV.BRES.EHZ. 2022-07-28T19:55:35.87 3.0 undecidable manual Sg 7.46 0
GU.BURY.HHZ. 2022-07-28T19:55:35.34 3.0 undecidable manual Sn 4.28 0
IV.GRI.EHZ. 2022-07-28T19:55:23.09 3.0 negative manual Pg 16.389999 0
IV.MSRU.HHZ. 2022-07-28T19:55:20.19 3.0 positive manual Pg 11.38 0
IV.PTCC.HHZ. 2022-07-28T19:54:46.29 3.0 negative manual Pg 5.68 0
IV.CDRU.HHZ. 2022-07-28T19:54:41.77 3.0 undecidable manual Pn 0.62 0
IV.RIBO.EHZ.01 2022-07-28T19:54:30.54 3.0 undecidable manual S 2.31 0
GU.GSCL.HHZ. 2022-07-28T19:54:27.09 3.0 undecidable manual Pg 6.1 0
IV.SRES.HHZ. 2022-07-28T19:54:20.09 3.0 undecidable manual S -1.18 0
IV.SAMA.EHZ. 2022-07-28T19:54:16.31 3.0 undecidable manual P 2.37 0
IV.CRE.HHZ. 2022-07-28T19:54:11.95 3.0 undecidable manual S -0.99 0
IV.CSNT.HHZ. 2022-07-28T19:54:07.02 3.0 positive manual P -1.48 0
IV.ARRO.EHZ. 2022-07-28T19:54:07.08 0.3 undecidable manual S 217 36.2415 50 -0.05 72
IV.GUMA.HHZ. 2022-07-28T19:54:06.96 0.3 undecidable manual S 45 34.8429 50 0.21 70
IV.MML1.EHZ. 2022-07-28T19:54:05.55 0.3 undecidable manual S 351 30.6471 50 -0.08 72
IV.CSP1.EHZ. 2022-07-28T19:54:05.65 0.3 undecidable manual S 27 31.1466 50 -0.13 72
IV.LNSS.HHZ. 2022-07-28T19:54:04.08 0.6 undecidable manual S 178 26.4513 50 -0.43 45
IV.GAVE.EHZ. 2022-07-28T19:54:02.47 0.3 undecidable manual S 214 19.9689 117 -0.09 74
IV.ARRO.EHZ. 2022-07-28T19:54:02.01 0.1 undecidable manual P 217 36.2415 50 0.09 95
IV.CESI.HHZ. 2022-07-28T19:54:02.86 0.3 undecidable manual S 331 20.9679 116 -0.01 75
IV.FDMO.HHZ. 2022-07-28T19:54:02.83 0.3 undecidable manual S 12 22.1556 115 -0.43 68
IV.GUMA.HHZ. 2022-07-28T19:54:01.88 0.1 undecidable manual P 45 34.8429 50 0.18 94
IV.CSP1.EHZ. 2022-07-28T19:54:01.06 0.1 undecidable manual P 27 31.1466 50 -0.08 97
IV.MML1.EHZ. 2022-07-28T19:54:01.09 0.1 undecidable manual P 351 30.6471 50 0.04 97
IV.MC2.EHZ. 2022-07-28T19:54:01.08 0.3 undecidable manual S 59 14.9739 124 -0.01 76
IV.LNSS.HHZ. 2022-07-28T19:54:00.33 0.1 undecidable manual P 178 26.4513 50 -0.07 97
IV.FDMO.HHZ. 2022-07-28T19:53:59.67 0.1 undecidable manual P 12 22.1556 115 -0.01 99
IV.GAVE.EHZ. 2022-07-28T19:53:59.45 0.1 undecidable manual P 214 19.9689 117 0.17 97
IV.CESI.HHZ. 2022-07-28T19:53:59.60 0.1 undecidable manual P 331 20.9679 116 0.14 97
IV.NRCA.HHZ. 2022-07-28T19:53:58.83 0.3 undecidable manual S 97 6.7932 146 -0.21 73
IV.MC2.EHZ. 2022-07-28T19:53:58.64 0.1 undecidable manual P 59 14.9739 124 0.21 97
IV.ATVO.HHZ. 2022-07-28T19:53:58.20 3.0 positive manual P 3.59 0
IV.NRCA.HHZ. 2022-07-28T19:53:57.36 0.1 undecidable manual P 97 6.7932 146 0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.5 0.0005389999999999999 0.12 AML other m 2022-07-28T19:54:00.23
IV.NRCA.HHN. ML:1.5 0.00047250000000000005 0.12 AML other m 2022-07-28T19:54:00.22
IV.GAVE.EHN. ML:1.4 0.000167 0.24 AML other m 2022-07-28T19:54:02.85
IV.CESI.HHN. ML:1.2 0.0001255 0.28 AML other m 2022-07-28T19:54:03.04
IV.GAVE.EHE. ML:1.4 0.0001965 1.46 AML other m 2022-07-28T19:54:03.83
IV.FDMO.HHE. ML:0.8 0.0000453 0.12 AML other m 2022-07-28T19:54:03.58
IV.CESI.HHE. ML:1.1 0.00008010000000000001 0.5 AML other m 2022-07-28T19:54:03.67
IV.FDMO.HHN. ML:0.7 0.00003365 1.12 AML other m 2022-07-28T19:54:04.00
IV.LNSS.HHE. ML:1.1 0.00007159999999999999 0.14 AML other m 2022-07-28T19:54:04.74
IV.LNSS.HHN. ML:1.1 0.0000669 0.1 AML other m 2022-07-28T19:54:05.35
IV.MML1.EHE. ML:0.7 0.000025 0.56 AML other m 2022-07-28T19:54:06.31
IV.MML1.EHN. ML:0.8 0.0000307 0.2 AML other m 2022-07-28T19:54:06.20
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