Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 04-01-2022 and time 23:59:15 (Italy) in region 1 km SW Sant'Anatolia di Narco (PG)

A magnitude ML 1.0 earthquake occured in region: 1 km SW Sant'Anatolia di Narco (PG), on

  • 04-01-2022 22:59:15 (UTC)
  • 04-01-2022 23:59:15 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7250, 12.8320 at 12 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sant'Anatolia di Narco PG 1 564 564
Scheggino PG 1 461 1025
Vallo di Nera PG 6 364 1389
Spoleto PG 8 38218 39607
Poggiodomo PG 9 117 39724
Campello sul Clitunno PG 12 2442 42166
Ferentillo TR 12 1913 44079
Cerreto di Spoleto PG 13 1075 45154
Monteleone di Spoleto PG 13 599 45753
Cascia PG 15 3217 48970
Montefranco TR 15 1276 50246
Polino TR 16 233 50479
Arrone TR 17 2763 53242
Castel Ritaldi PG 17 3278 56520
Trevi PG 18 8469 64989
Sellano PG 20 1079 66068

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NE of Terni (111501 inhabitants)
28 Km SE of Foligno (57155 inhabitants)
56 Km SE of Perugia (166134 inhabitants)
62 Km NW of L'Aquila (69753 inhabitants)
69 Km NE of Viterbo (67173 inhabitants)
72 Km W of Teramo (54892 inhabitants)
81 Km N of Guidonia Montecelio (88673 inhabitants)
85 Km N of Tivoli (56533 inhabitants)
97 Km NE of Roma (2864731 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 1.0 2022-01-04
22:59:15		 42.7253 12.832 12 2022-01-04
23:06:42		 Sala Sismica INGV-Roma 99336741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-01-04 22:59:15 ± 0.12
Latitude 42.7253 ± 0.0036
Longitude 12.8320 ± 0.0098
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 99336741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 667
Semi-minor axis of confidence ellipse (meter) 544
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 97
Circular confidence region, given by single value of horizontal uncertainty (meter) 670.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 173
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.45686
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 99336741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-01-04 23:06:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IX.SCL3.EHZ.02 2022-01-04T23:00:52.69 3.0 undecidable manual Sg 12.56 0
IV.MCRV.HHZ. 2022-01-04T23:00:34.96 3.0 undecidable manual Sn 0.33 0
IV.PTRJ.HHZ. 2022-01-04T23:00:14.96 3.0 undecidable manual Sn -1.26 0
IV.MBAL.EHZ. 2022-01-04T22:59:51.15 3.0 undecidable manual Pg 6.31 0
GU.GRAM.HHZ. 2022-01-04T22:59:38.76 3.0 positive manual Pn 0.51 0
IV.CSP1.EHZ. 2022-01-04T22:59:32.06 1.0 undecidable manual S 37 50.7159 92 0.69 20
IV.FDMO.HHZ. 2022-01-04T22:59:28.60 0.6 undecidable manual S 31 40.3263 93 0.01 49
IV.CESI.HHZ. 2022-01-04T22:59:26.28 0.1 undecidable manual S 11 31.5462 94 0.01 100
IV.CSP1.EHZ. 2022-01-04T22:59:24.60 0.1 undecidable manual P 37 50.7159 92 -0.01 97
IV.LNSS.HHZ. 2022-01-04T22:59:23.57 0.6 undecidable manual S 129 21.7671 98 -0.09 50
IV.ARRO.EHZ. 2022-01-04T22:59:22.50 0.6 undecidable manual S 198 17.0718 105 0.06 51
IV.FDMO.HHZ. 2022-01-04T22:59:22.93 0.1 undecidable manual P 31 40.3263 93 -0.08 97
IV.CESI.HHZ. 2022-01-04T22:59:21.53 0.1 undecidable manual P 11 31.5462 94 -0.14 97
IV.LNSS.HHZ. 2022-01-04T22:59:20.19 0.3 undecidable manual P 129 21.7671 98 0.03 76
IV.GAVE.EHZ. 2022-01-04T22:59:19.98 0.6 undecidable manual S 126 6.2937 145 -0.08 52
IV.ARRO.EHZ. 2022-01-04T22:59:19.62 0.6 undecidable manual P 198 17.0718 105 0.16 51
IV.GAVE.EHZ. 2022-01-04T22:59:18.21 0.6 undecidable manual P 126 6.2937 145 0.14 51
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:0.9 0.000116126895 0.2688 AML other m 2022-01-04T22:59:20.65
IV.GAVE.EHN. ML:1.0 0.000123 0.12 AML other m 2022-01-04T22:59:20.39
IV.GAVE.HNE. ML:1.0 0.00013220824 0.9088 AML other m 2022-01-04T22:59:17.66
IV.GAVE.HNN. ML:1.2 0.00018296479999999998 1.024 AML other m 2022-01-04T22:59:29.04
IV.ARRO.EHE. ML:0.8 0.000050756165 0.1792 AML other m 2022-01-04T22:59:23.60
IV.ARRO.EHN. ML:0.8 0.000053551099999999996 0.2048 AML other m 2022-01-04T22:59:23.49
IV.LNSS.HHE. ML:0.9 0.00005712747 0.1152 AML other m 2022-01-04T22:59:23.96
IV.LNSS.HHN. ML:0.9 0.000056709545 0.1408 AML other m 2022-01-04T22:59:24.46
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