Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 01-02-2021 and time 13:12:16 (Italy) in region 2 km SE Leonessa (RI)

A magnitude ML 1.3 earthquake occured in region: 2 km SE Leonessa (RI), on

  • 01-02-2021 12:12:16 (UTC)
  • 01-02-2021 13:12:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.5450, 12.9730 at 13 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Leonessa RI 2 2435 2435
Poggio Bustone RI 8 2055 4490
Rivodutri RI 10 1253 5743
Cantalice RI 10 2755 8498
Posta RI 10 694 9192
Polino TR 11 233 9425
Morro Reatino RI 12 373 9798
Monteleone di Spoleto PG 12 599 10397
Micigliano RI 12 127 10524
Borbona RI 14 617 11141
Labro RI 14 374 11515
Colli sul Velino RI 17 533 12048
Antrodoco RI 17 2588 14636
Borgo Velino RI 17 972 15608
Arrone TR 17 2763 18371
Castel Sant'Angelo RI 17 1308 19679
Ferentillo TR 17 1913 21592
Cittareale RI 17 482 22074
Cittaducale RI 18 6828 28902
Montefranco TR 18 1276 30178
Rieti RI 18 47698 77876
Poggiodomo PG 19 117 77993
Greccio RI 19 1558 79551
Cascia PG 20 3217 82768

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Terni (111501 inhabitants)
41 Km NW of L'Aquila (69753 inhabitants)
51 Km SE of Foligno (57155 inhabitants)
61 Km W of Teramo (54892 inhabitants)
64 Km NE of Guidonia Montecelio (88673 inhabitants)
66 Km N of Tivoli (56533 inhabitants)
73 Km E of Viterbo (67173 inhabitants)
79 Km SE of Perugia (166134 inhabitants)
83 Km NE of Roma (2864731 inhabitants)
97 Km W of Montesilvano (53738 inhabitants)
97 Km N of Velletri (53303 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 2021-02-01
12:12:16		 42.5447 12.9728 13 2021-02-01
12:19:39		 Sala Sismica INGV-Roma 86761211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-01 12:12:16 ± 0.07
Latitude 42.5447 ± 0.0036
Longitude 12.9728 ± 0.0037
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86761211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 418
Semi-minor axis of confidence ellipse (meter) 145
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 195
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 58
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 17
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.47124
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 25
Type of magnitude ML
Reference to an origin 86761211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-01 12:19:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2021-02-01T12:12:45.20 3.0 undecidable manual S -0.29 0
IV.CSP1.EHZ. 2021-02-01T12:12:27.94 3.0 negative manual P 0.88 0
IV.SMA1.EHZ. 2021-02-01T12:12:27.85 0.3 undecidable manual S 72 31.1466 96 0.41 69
IV.FIAM.HHZ. 2021-02-01T12:12:27.75 0.3 undecidable manual S 159 32.9448 95 -0.17 72
IV.SRES.HHZ. 2021-02-01T12:12:26.05 0.3 undecidable manual P 228 51.0156 93 0.11 71
IV.TERO.HHZ. 2021-02-01T12:12:25.80 0.3 undecidable manual P 80 52.3032 93 -0.34 67
IT.MMP1.HGE. 2021-02-01T12:12:24.04 0.1 undecidable manual P 209 37.629 94 0.16 96
IV.RM33.EHZ. 2021-02-01T12:12:24.45 0.3 undecidable manual S 101 20.1687 103 -0.1 75
IV.FIAM.HHZ. 2021-02-01T12:12:23.11 0.6 undecidable manual P 159 32.9448 95 -0.05 49
IV.NRCA.HHZ. 2021-02-01T12:12:23.13 0.1 negative manual P 20 34.0437 95 -0.21 95
IV.GAVE.EHZ. 2021-02-01T12:12:23.77 0.3 undecidable manual S 339 17.5713 108 -0.12 75
IV.ARRO.EHZ. 2021-02-01T12:12:23.62 0.3 undecidable manual S 283 17.3715 108 -0.21 74
IV.CESX.HHZ. 2021-02-01T12:12:23.14 0.6 positive manual P 283 32.3454 95 0.07 50
IV.SMA1.EHZ. 2021-02-01T12:12:22.97 0.1 positive manual P 72 31.1466 96 0.09 99
IV.LNSS.HHZ. 2021-02-01T12:12:21.80 0.3 undecidable manual S 41 8.4804 137 -0.02 78
IV.RM33.EHZ. 2021-02-01T12:12:21.20 0.6 positive manual P 101 20.1687 103 -0.01 51
IV.GAVE.EHZ. 2021-02-01T12:12:20.93 0.6 undecidable manual P 339 17.5713 108 0.1 50
IV.ARRO.EHZ. 2021-02-01T12:12:20.94 0.1 positive manual P 283 17.3715 108 0.14 100
IV.LNSS.HHZ. 2021-02-01T12:12:19.71 0.6 undecidable manual P 41 8.4804 137 0.07 51
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HNE. ML:2.1 0.00145 1.68 AML other m 2021-02-01T12:12:22.04
IV.LNSS.HHE. ML:2.1 0.0015 1.68 AML other m 2021-02-01T12:12:22.04
IV.LNSS.HNN. ML:2.0 0.0011405 1.7 AML other m 2021-02-01T12:12:22.93
IV.LNSS.HHN. ML:2.0 0.0011465000000000002 0.58 AML other m 2021-02-01T12:12:22.93
IV.ARRO.EHE. ML:1.4 0.00020349999999999999 1.12 AML other m 2021-02-01T12:12:23.34
IV.ARRO.EHN. ML:1.4 0.000182 0.36 AML other m 2021-02-01T12:12:24.22
IV.RM33.EHN. ML:1.5 0.0002035 0.92 AML other m 2021-02-01T12:12:25.64
IV.RM33.EHE. ML:1.5 0.00020850000000000003 0.2 AML other m 2021-02-01T12:12:25.70
IV.NRCA.HHN. ML:1.4 0.0000946 0.16 AML other m 2021-02-01T12:12:28.02
IV.NRCA.HHE. ML:1.5 0.00013000000000000002 0.16 AML other m 2021-02-01T12:12:28.31
IV.SMA1.EHE. ML:1.2 0.00007878200999999999 0.3968 AML other m 2021-02-01T12:12:28.15
IV.SMA1.EHN. ML:1.1 0.000059499999999999996 0.54 AML other m 2021-02-01T12:12:30.79
IV.GAVE.EHE. ML:1.2 0.00013269315 0.3456 AML other m 2021-02-01T12:12:26.93
IV.GAVE.EHN. ML:1.3 0.00016189365 0.1792 AML other m 2021-02-01T12:12:24.59
IV.GAVE.HNE. ML:1.3 0.000156141195 0.3456 AML other m 2021-02-01T12:12:26.93
IV.GAVE.HNN. ML:1.3 0.000151253735 0.6976 AML other m 2021-02-01T12:12:22.52
IV.RM33.HNE. ML:1.5 0.00021888255000000002 0.1984 AML other m 2021-02-01T12:12:25.70
IV.RM33.HNN. ML:1.4 0.000162981955 0.128 AML other m 2021-02-01T12:12:25.17
IV.FIAM.HHE. ML:0.6 0.000016486875 0.0768 AML other m 2021-02-01T12:12:28.51
IV.FIAM.HHN. ML:0.8 0.000024121365 0.3008 AML other m 2021-02-01T12:12:29.73
IV.NRCA.HNE. ML:1.6 0.0001444806 0.1088 AML other m 2021-02-01T12:12:28.37
IV.CESX.HHE. ML:1.0 0.000039653665 0.32 AML other m 2021-02-01T12:12:30.77
IV.CESX.HHN. ML:1.1 0.00005131732 0.2624 AML other m 2021-02-01T12:12:29.92
IV.TERO.HHE. ML:1.0 0.000026290124999999996 0.096 AML other m 2021-02-01T12:12:33.27
IV.TERO.HHN. ML:0.9 0.000022310126 0.0832 AML other m 2021-02-01T12:12:33.08
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