Earthquake with magnitude of ML 0.8 on date 20-09-2023 and time 14:12:22 (UTC) in region 8 km E Norcia (PG)

A magnitude ML 0.8 earthquake occured in region: 8 km E Norcia (PG), on

  • 20-09-2023 14:12:22 (UTC)
  • 20-09-2023 16:12:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7950, 13.1950 at 9 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.

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 8 4957 4957
Arquata del Tronto AP 9 1178 6135
Castelsantangelo sul Nera MC 12 281 6416
Accumoli RI 12 667 7083
Montegallo AP 13 523 7606
Preci PG 16 724 8330
Montemonaco AP 16 604 8934
Cascia PG 17 3217 12151
Ussita MC 17 444 12595
Visso MC 17 1107 13702
Acquasanta Terme AP 18 2916 16618
Cittareale RI 20 482 17100
Amatrice RI 20 2657 19757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Foligno (57155 inhabitants)
44 Km W of Teramo (54892 inhabitants)
52 Km NE of Terni (111501 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
74 Km E of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
91 Km W of Pescara (121014 inhabitants)
94 Km NW of Chieti (51815 inhabitants)
95 Km S of Ancona (100861 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
98 Km NE of Tivoli (56533 inhabitants)
99 Km E of Viterbo (67173 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 0.8 2023-09-20
14:12:22
42.7952 13.1947 9 2023-09-20
14:20:57
Sala Sismica INGV-Roma 121279021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-20 14:12:22 ± 0.06
Latitude 42.7952 ± 0.0027
Longitude 13.1947 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121279021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 280
Semi-minor axis of confidence ellipse (meter) 179
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 320
Circular confidence region, given by single value of horizontal uncertainty (meter) 280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.52970
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 14
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 121279021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-20 14:20:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PTCC.HHZ. 2023-09-20T14:13:57.91 3.0 undecidable manual Sn -6.51 0
IV.MBFT.HHZ. 2023-09-20T14:13:54.24 3.0 negative manual Pg 15.51 0
IV.ACATE.EHZ. 2023-09-20T14:13:50.08 3.0 negative manual Pn -2.31 0
IV.MCRV.HHZ. 2023-09-20T14:13:40.59 3.0 undecidable manual Sg 1.76 0
IV.BAG8.EHZ. 2023-09-20T14:13:30.11 3.0 positive manual Pg 9.46 0
GU.CANO.HHZ. 2023-09-20T14:13:26.17 3.0 positive manual Pn 1.29 0
OX.PLRO.HHZ. 2023-09-20T14:13:25.97 3.0 undecidable manual Pg 3.67 0
OX.VARN.HHZ. 2023-09-20T14:13:21.43 3.0 negative manual Pg 5.34 0
IV.LMD.HHZ. 2023-09-20T14:13:18.48 3.0 undecidable manual Sg 0.39 0
SL.BOJS.BHZ. 2023-09-20T14:13:11.97 3.0 negative manual Pn -1.02 0
IV.MIDA.HHZ. 2023-09-20T14:13:10.53 3.0 undecidable manual S -1.52 0
IV.SGTA.HHZ. 2023-09-20T14:13:04.01 3.0 positive manual Pn 0.57 0
IV.RNI2.HHZ. 2023-09-20T14:12:51.74 3.0 undecidable manual P 2.06 0
IV.PE3.EHZ. 2023-09-20T14:12:44.05 3.0 undecidable manual P -0.75 0
IV.FRON.EHZ. 2023-09-20T14:12:42.77 3.0 positive manual P 2.39 0
IV.MML1.EHZ. 2023-09-20T14:12:36.47 0.6 undecidable manual S 333 39.627 50 0.06 47
IV.TERO.HHZ. 2023-09-20T14:12:35.81 0.6 undecidable manual S 120 38.4282 50 -0.27 45
IV.CSP1.EHZ. 2023-09-20T14:12:34.48 0.6 undecidable manual S 1 32.9448 50 -0.12 47
IV.FIAM.HHZ. 2023-09-20T14:12:34.77 3.0 undecidable manual P 58.7967 1.1 0
IV.GAVE.EHZ. 2023-09-20T14:12:33.06 0.6 undecidable manual S 245 27.0507 109 0.21 47
IV.FDMO.HHZ. 2023-09-20T14:12:33.18 1.0 undecidable manual S 342 28.1496 108 -0.04 24
IV.LNSS.HHZ. 2023-09-20T14:12:32.33 0.6 undecidable manual S 211 24.753 110 0.21 47
IV.TERO.HHZ. 2023-09-20T14:12:30.28 1.0 negative manual P 120 38.4282 50 -0.25 23
IV.MML1.EHZ. 2023-09-20T14:12:30.98 1.0 positive manual P 333 39.627 50 0.26 23
IV.CSP1.EHZ. 2023-09-20T14:12:29.63 0.6 negative manual P 1 32.9448 50 -0.05 48
IV.MTRA.HNZ. 2023-09-20T14:12:29.83 0.6 undecidable manual S 104 16.9719 118 0.18 48
IV.MMO1.EHZ. 2023-09-20T14:12:29.27 0.3 undecidable manual S 43 15.7731 120 -0.02 74
IV.MC2.EHZ. 2023-09-20T14:12:29.01 1.0 undecidable manual S 358 12.876 126 0.56 22
IV.FDMO.HHZ. 2023-09-20T14:12:29.04 1.0 positive manual P 342 28.1496 108 0.16 24
IV.LNSS.HHZ. 2023-09-20T14:12:28.15 0.6 undecidable manual P 211 24.753 110 -0.09 48
7F.SIB1.EHZ. 2023-09-20T14:12:28.31 0.3 undecidable manual S 29 12.5763 126 -0.06 74
IV.GAVE.EHZ. 2023-09-20T14:12:28.55 0.3 undecidable manual P 245 27.0507 109 -0.11 71
7F.SIB2.EHZ. 2023-09-20T14:12:28.52 0.6 undecidable manual S 40 13.875 124 -0.2 48
IV.SMA1.EHZ. 2023-09-20T14:12:27.17 1.0 undecidable manual P 148 21.5673 113 -0.47 22
IV.MTRA.HNZ. 2023-09-20T14:12:27.01 0.6 undecidable manual P 104 16.9719 118 0.19 48
7F.SIB3.EHZ. 2023-09-20T14:12:27.56 0.6 undecidable manual S 35 10.7781 131 -0.31 47
IV.MMO1.EHZ. 2023-09-20T14:12:26.71 0.3 undecidable manual P 43 15.7731 120 0.1 73
IV.MC2.EHZ. 2023-09-20T14:12:26.38 0.3 undecidable manual P 358 12.876 126 0.26 71
7F.SIB2.EHZ. 2023-09-20T14:12:26.33 0.1 undecidable manual P 40 13.875 124 0.05 99
IV.NRCA.HNZ. 2023-09-20T14:12:26.68 0.3 undecidable manual S 303 7.7811 140 -0.46 69
7F.SIB1.EHZ. 2023-09-20T14:12:26.26 0.3 undecidable manual P 29 12.5763 126 0.18 72
7F.SIB3.EHZ. 2023-09-20T14:12:25.85 0.1 undecidable manual P 35 10.7781 131 0.06 99
IV.NRCA.HNZ. 2023-09-20T14:12:25.33 0.1 undecidable manual P 303 7.7811 140 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.0 0.000059300000000000005 1.34 AML other m 2023-09-20T14:12:32.03
IV.LNSS.HHN. ML:1.0 0.00005895 1.8 AML other m 2023-09-20T14:12:32.06
IV.FDMO.HHE. ML:0.7 0.000025849999999999998 0.8 AML other m 2023-09-20T14:12:34.34
IV.GAVE.EHE. ML:0.8 0.0000353 0.44 AML other m 2023-09-20T14:12:34.62
IV.FDMO.HHN. ML:0.6 0.00001835 0.16 AML other m 2023-09-20T14:12:35.10
IV.GAVE.EHN. ML:0.8 0.00003265 1 AML other m 2023-09-20T14:12:36.65
IV.MML1.EHE. ML:0.9 0.000028 1.56 AML other m 2023-09-20T14:12:37.14
IV.MML1.EHN. ML:0.6 0.000015300000000000003 0.42 AML other m 2023-09-20T14:12:37.22
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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