Earthquake with magnitude of ML 0.8 on date 12-03-2021 and time 03:14:50 (Italy) in region 3 km E Norcia (PG)

A magnitude ML 0.8 earthquake occured in region: 3 km E Norcia (PG), on

  • 12-03-2021 02:14:50 (UTC)
  • 12-03-2021 03:14:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.79, 13.13 at 8 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.

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 3 4957 4957
Castelsantangelo sul Nera MC 12 281 5238
Cascia PG 12 3217 8455
Preci PG 12 724 9179
Arquata del Tronto AP 14 1178 10357
Accumoli RI 14 667 11024
Visso MC 16 1107 12131
Ussita MC 17 444 12575
Montegallo AP 18 523 13098
Cerreto di Spoleto PG 18 1075 14173
Poggiodomo PG 18 117 14290
Cittareale RI 19 482 14772
Sellano PG 20 1079 15851

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
70 Km SE of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km N of Tivoli (56533 inhabitants)
96 Km W of Pescara (121014 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
98 Km NW of Chieti (51815 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 0.8 2021-03-12
02:14:50
42.7902 13.1298 8 2021-07-12
16:55:16
Bollettino Sismico Italiano INGV 91714511
Reviewed
Rev100
Md 1.5 2021-03-12
02:14:50
42.7912 13.127 8 2021-03-12
02:34:25
Sala Sismica INGV-Roma 88022511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-12 02:14:50 ± 0.06
Latitude 42.7902 ± 0.0027
Longitude 13.1298 ± 0.0049
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91714511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 285
Semi-minor axis of confidence ellipse (meter) 271
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 117
Circular confidence region, given by single value of horizontal uncertainty (meter) 290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 20
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) 0.04497
Epicentral distance of station farthest from the epicenter (degree) 0.31206
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 91714511
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-22 15:18:51

Md:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 4
Type of magnitude Md
Reference to an origin 88022511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-12 02:34:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MF5.EHN. 2021-03-12T02:15:03.02 0.6 undecidable manual S 51 0.3121 50 0.34 46
IV.GUMA.HHZ. 2021-03-12T02:15:02.71 0.3 undecidable manual S 29 0.3112 50 0.06 73
IV.SMA1.EHZ. 2021-03-12T02:14:59.17 0.3 undecidable manual S 137 0.2194 109 -0.15 73
IV.T1299.EHN. 2021-03-12T02:14:58.53 0.6 undecidable manual S 144 0.1916 112 0.21 48
IV.LNSS.HNE. 2021-03-12T02:14:58.57 0.6 undecidable manual S 199 0.1988 111 0.01 50
IV.GAVE.EHZ. 2021-03-12T02:14:58.90 0.6 undecidable manual S 241 0.1988 111 0.33 47
IV.GUMA.HHZ. 2021-03-12T02:14:57.39 0.1 undecidable manual P 29 0.3112 50 -0.07 97
IV.MMO1.EHZ. 2021-03-12T02:14:57.78 0.6 undecidable manual S 53 0.1808 113 -0.15 49
IV.MF5.EHN. 2021-03-12T02:14:57.46 0.3 undecidable manual P 51 0.3121 50 -0.02 74
IV.CESI.HHZ. 2021-03-12T02:14:56.28 0.1 undecidable manual P 323 0.2707 106 -0.35 92
IV.MC2.EHZ. 2021-03-12T02:14:56.49 0.6 undecidable manual S 20 0.1286 120 0.36 47
IV.SMA1.EHZ. 2021-03-12T02:14:55.34 0.1 undecidable manual P 137 0.2194 109 -0.2 96
IV.T1299.EHN. 2021-03-12T02:14:55.05 0.1 undecidable manual P 144 0.1916 112 0.09 99
IV.FDMO.HHZ. 2021-03-12T02:14:55.94 0.3 undecidable manual P 353 0.2482 107 -0.21 72
IV.LNSS.HNE. 2021-03-12T02:14:55.07 0.1 undecidable manual P 199 0.1988 111 -0.03 100
IV.GAVE.EHZ. 2021-03-12T02:14:55.13 0.3 undecidable manual P 241 0.1988 111 0.02 75
IV.MMO1.EHZ. 2021-03-12T02:14:54.65 0.1 undecidable manual P 53 0.1808 113 -0.09 99
IV.NRCA.HHZ. 2021-03-12T02:14:53.69 0.3 undecidable manual S 345 0.045 149 -0.07 77
IV.MC2.EHZ. 2021-03-12T02:14:53.89 0.1 undecidable manual P 20 0.1286 120 0.19 98
IV.NRCA.HHZ. 2021-03-12T02:14:52.51 0.1 negative manual P 345 0.045 149 0.18 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:0 0.001260137 0.1792 AML other m 2021-03-12T02:14:53.81
IV.NRCA.HNN. ML:0 0.0010753135 0.0704 AML other m 2021-03-12T02:14:53.71
IV.NRCA.HHN. ML:0 0.0012076401 0.08 AML other m 2021-03-12T02:14:53.71
IV.NRCA.HHE. ML:0 0.001278323 0.1792 AML other m 2021-03-12T02:14:53.72
IV.GAVE.EHN. ML:0.7 3.652408E-5 0.1792 AML other m 2021-03-12T02:15:00.89
IV.GAVE.EHE. ML:0.9 5.0231615E-5 0.2 AML other m 2021-03-12T02:15:00.06
IV.SMA1.EHE. ML:0.8 3.506315E-5 0.36 AML other m 2021-03-12T02:15:00.49
IV.SMA1.EHN. ML:0.9 4.600378E-5 0.28 AML other m 2021-03-12T02:15:00.83
IV.NRCA.HHZ. Md:0.2 3 END duration s
IV.MMO1.EHZ. Md:1.6 16 END duration s
IV.SMA1.EHZ. Md:1.7 18 END duration s
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