Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 17-02-2023 and time 06:27:05 (UTC) in region 5 km E Norcia (PG)

A magnitude ML 0.7 earthquake occured in region: 5 km E Norcia (PG), on

  • 17-02-2023 06:27:05 (UTC)
  • 17-02-2023 07:27:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7790, 13.1580 at 11 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.

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
Norcia PG 6 4957 4957
Arquata del Tronto AP 11 1178 6135
Accumoli RI 12 667 6802
Castelsantangelo sul Nera MC 13 281 7083
Cascia PG 14 3217 10300
Preci PG 15 724 11024
Montegallo AP 16 523 11547
Cittareale RI 18 482 12029
Visso MC 18 1107 13136
Ussita MC 19 444 13580
Montemonaco AP 19 604 14184
Poggiodomo PG 20 117 14301
Amatrice RI 20 2657 16958

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
47 Km W of Teramo (54892 inhabitants)
48 Km NE of Terni (111501 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
73 Km SE of Perugia (166134 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
93 Km W of Pescara (121014 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
95 Km NW of Chieti (51815 inhabitants)
98 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
Bulletin
Rev1000 		ML 0.7 2023-02-17
06:27:05		 42.7788 13.1577 11 2024-03-01
17:18:09		 Bollettino Sismico Italiano INGV 117707871
Reviewed
Rev100 		ML 0.7 2023-02-17
06:27:05		 42.783 13.1633 12 2023-02-17
07:21:10		 Sala Sismica INGV-Roma 114507351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-17 06:27:05 ± 0.06
Latitude 42.7788 ± 0.0027
Longitude 13.1577 ± 0.0037
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 117707871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 370
Semi-minor axis of confidence ellipse (meter) 48
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 310
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.06295
Epicentral distance of station farthest from the epicenter (degree) 0.31206
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 114507351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-17 07:21:10

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 11
Type of magnitude ML
Reference to an origin 117707871
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-05-25 09:13:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAMP.HHE. 2023-02-17T06:27:17.04 0.1 undecidable manual S 143 33.8439 50 -0.09 95
IV.CESI.HHZ. 2023-02-17T06:27:16.72 0.3 undecidable manual S 321 32.4453 50 -0.03 72
IV.FDMO.HHZ. 2023-02-17T06:27:15.73 0.3 undecidable manual S 349 29.1486 50 -0.14 72
IV.LNSS.HNZ. 2023-02-17T06:27:14.07 0.3 undecidable manual S 206 21.7671 50 0.18 68
IV.GAVE.EHN. 2023-02-17T06:27:14.27 0.3 undecidable manual S 246 23.5542 50 -0.1 73
7F.SIB1.EHE. 2023-02-17T06:27:12.29 0.3 undecidable manual S 35 15.7731 124 0.07 74
7F.SIB2.EHE. 2023-02-17T06:27:12.53 0.3 undecidable manual S 44 17.2716 122 -0.11 73
IV.GUMA.HHZ. 2023-02-17T06:27:12.68 1.0 undecidable manual P 25 34.6431 50 0.31 22
IV.MC2.EHZ. 2023-02-17T06:27:12.35 0.1 undecidable manual S 10 14.9739 126 0.37 93
IV.FDMO.HHZ. 2023-02-17T06:27:11.34 0.1 undecidable manual P 349 29.1486 50 -0.18 95
IV.CAMP.HHE. 2023-02-17T06:27:11.83 0.6 undecidable manual P 143 33.8439 50 -0.42 45
IV.CESI.HHZ. 2023-02-17T06:27:11.94 0.1 undecidable manual P 321 32.4453 50 -0.09 96
7F.SIB3.EHN. 2023-02-17T06:27:11.75 0.3 undecidable manual S 40 14.0748 128 0.01 74
IV.GAVE.EHN. 2023-02-17T06:27:10.97 0.6 undecidable manual P 246 23.5542 50 0.32 45
IV.MMO1.EHZ. 2023-02-17T06:27:10.09 1.0 undecidable manual P 46 19.1697 50 0.1 24
IV.LNSS.HNZ. 2023-02-17T06:27:10.41 0.6 undecidable manual P 206 21.7671 50 0.03 48
IV.NRCA.HHZ. 2023-02-17T06:27:10.16 0.1 undecidable manual S 330 6.993 147 0.1 100
IV.MC2.EHZ. 2023-02-17T06:27:09.45 0.1 undecidable manual P 10 14.9739 126 0.17 96
7F.SIB3.EHN. 2023-02-17T06:27:09.11 0.1 undecidable manual P 40 14.0748 128 -0.02 99
7F.SIB1.EHE. 2023-02-17T06:27:09.52 0.3 undecidable manual P 35 15.7731 124 0.11 73
7F.SIB2.EHE. 2023-02-17T06:27:09.56 0.3 undecidable manual P 44 17.2716 122 -0.09 73
IV.NRCA.HHZ. 2023-02-17T06:27:07.77 0.1 undecidable manual P 330 6.993 147 -0.4 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0.7 0.00007680000000000001 0.54 AML other m 2023-02-17T06:27:10.29
IV.NRCA.HHE. ML:1.0 0.0001395 0.16 AML other m 2023-02-17T06:27:10.23
IV.NRCA.HNE. ML:0.8 0.00009744784499999999 0.1376 AML other m 2023-02-17T06:27:10.38
IV.NRCA.HNN. ML:1.2 0.00023014764999999997 1.7984 AML other m 2023-02-17T06:27:11.89
IV.MC2.EHN. ML:0.7 0.00004621976 0.1792 AML other m 2023-02-17T06:27:13.39
IV.MC2.EHE. ML:0.6 0.000037942315000000005 0.1184 AML other m 2023-02-17T06:27:12.86
IV.FDMO.HHN. ML:0.3 0.0000094543605 0.2592 AML other m 2023-02-17T06:27:17.96
IV.FDMO.HHE. ML:0.0 0.0000066231190000000005 0.2176 AML other m 2023-02-17T06:27:16.37
IV.CESI.HHE. ML:0.7 0.000020777529999999998 4.8992 AML other m 2023-02-17T06:27:19.88
IV.CESI.HHN. ML:0.5 0.000012668881 0.2016 AML other m 2023-02-17T06:27:17.11
IV.CESI.HNE. ML:1.4 0.00010143106 0.7808 AML other m 2023-02-17T06:27:22.86
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