Earthquake with magnitude of ML 1.3 on date 27-02-2021 and time 22:39:27 (Italy) in region 5 km E Norcia (PG)

A magnitude ML 1.3 earthquake occured in region: 5 km E Norcia (PG), on

  • 27-02-2021 21:39:27 (UTC)
  • 27-02-2021 22:39:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7720, 13.1540 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.

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 5 4957 4957
Accumoli RI 12 667 5624
Arquata del Tronto AP 12 1178 6802
Cascia PG 13 3217 10019
Castelsantangelo sul Nera MC 14 281 10300
Preci PG 15 724 11024
Montegallo AP 17 523 11547
Cittareale RI 17 482 12029
Visso MC 19 1107 13136
Poggiodomo PG 19 117 13253
Ussita MC 19 444 13697
Amatrice RI 19 2657 16354

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 NE of Guidonia Montecelio (88673 inhabitants)
93 Km W of Pescara (121014 inhabitants)
94 Km NE of Tivoli (56533 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
95 Km NW of Chieti (51815 inhabitants)
99 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
Reviewed
Rev100
ML 1.3 2021-02-27
21:39:27
42.7723 13.1538 10 2021-02-27
21:45:23
Sala Sismica INGV-Roma 87551891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-27 21:39:27 ± 0.07
Latitude 42.7723 ± 0.0036
Longitude 13.1538 ± 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 87551891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 370
Semi-minor axis of confidence ellipse (meter) 249
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 330
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) 88
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.06745
Epicentral distance of station farthest from the epicenter (degree) 0.36243
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 87551891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-27 21:45:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2021-02-27T21:39:40.76 0.6 undecidable manual S 114 40.2264 50 -0.22 46
IV.MF5.EHZ. 2021-02-27T21:39:40.44 0.6 undecidable manual S 46 34.5432 50 1 36
IV.ARRO.EHZ. 2021-02-27T21:39:39.96 0.6 undecidable manual S 236 38.2284 50 -0.47 44
IV.RM33.EHZ. 2021-02-27T21:39:38.04 0.6 undecidable manual S 170 29.6481 50 -0.1 48
IV.GAVE.EHZ. 2021-02-27T21:39:36.18 0.6 undecidable manual S 247 22.9548 113 -0.02 50
IV.MTRA.EHZ. 2021-02-27T21:39:35.16 0.3 undecidable manual S 95 19.869 117 -0.07 74
IV.LNSS.HHZ. 2021-02-27T21:39:35.70 0.3 undecidable manual S 206 20.9679 115 0.13 73
IV.SMA1.EHZ. 2021-02-27T21:39:35.78 0.3 undecidable manual S 137 21.5673 115 0.01 75
IV.MMO1.EHZ. 2021-02-27T21:39:35.05 0.3 undecidable manual S 45 19.9689 117 -0.2 72
IV.MF5.EHZ. 2021-02-27T21:39:34.75 1.0 undecidable manual P 46 34.5432 50 0.35 23
IV.TERO.HHZ. 2021-02-27T21:39:34.84 1.0 undecidable manual P 114 40.2264 50 -0.45 22
IV.CSP1.EHZ. 2021-02-27T21:39:34.35 0.6 negative manual P 7 35.742 50 -0.23 46
IV.ARRO.EHZ. 2021-02-27T21:39:34.93 0.6 positive manual P 236 38.2284 50 -0.05 48
IV.RM33.EHZ. 2021-02-27T21:39:33.79 1.0 undecidable manual P 170 29.6481 50 0.14 24
IV.GAVE.EHZ. 2021-02-27T21:39:32.74 0.6 undecidable manual P 247 22.9548 113 0.21 48
IV.LNSS.HHZ. 2021-02-27T21:39:32.35 0.1 undecidable manual P 206 20.9679 115 0.18 96
IV.SMA1.EHZ. 2021-02-27T21:39:32.47 1.0 undecidable manual P 137 21.5673 115 0.18 24
IV.MMO1.EHZ. 2021-02-27T21:39:31.90 0.6 positive manual P 45 19.9689 117 -0.09 49
IV.MTRA.EHZ. 2021-02-27T21:39:31.96 0.1 undecidable manual P 95 19.869 117 -0.01 100
IV.NRCA.HHZ. 2021-02-27T21:39:31.64 0.3 undecidable manual S 335 7.4814 143 -0.21 73
IV.NRCA.HHZ. 2021-02-27T21:39:30.18 0.1 negative manual P 335 7.4814 143 0.16 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.5 0.00042200000000000007 0.16 AML other m 2021-02-27T21:39:31.82
IV.NRCA.HHE. ML:1.6 0.000621 0.12 AML other m 2021-02-27T21:39:31.98
IV.MTRA.EHN. ML:0.9 0.000056000000000000006 1.12 AML other m 2021-02-27T21:39:35.20
IV.LNSS.HHN. ML:1.3 0.0001285 1.46 AML other m 2021-02-27T21:39:35.10
IV.LNSS.HHE. ML:1.4 0.00016649999999999998 1.84 AML other m 2021-02-27T21:39:35.95
IV.MTRA.EHE. ML:1.1 0.00008375 1.36 AML other m 2021-02-27T21:39:36.84
IV.GAVE.EHE. ML:1.3 0.000142 0.52 AML other m 2021-02-27T21:39:36.82
IV.GAVE.EHN. ML:1.4 0.000174 0.24 AML other m 2021-02-27T21:39:36.56
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