Earthquake with magnitude of ML 1.7 on date 14-02-2021 and time 17:34:57 (Italy) in region 5 km SW Stroncone (TR)

A magnitude ML 1.7 earthquake occured in region: 5 km SW Stroncone (TR), on

  • 14-02-2021 16:34:57 (UTC)
  • 14-02-2021 17:34:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.47, 12.62 at 12 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
Stroncone TR 5 4917 4917
Configni RI 5 633 5550
Calvi dell'Umbria TR 9 1856 7406
Cottanello RI 9 563 7969
Vacone RI 9 256 8225
Narni TR 10 19785 28010
Montasola RI 10 395 28405
Terni TR 11 111501 139906
Montebuono RI 11 883 140789
Tarano RI 13 1444 142233
Greccio RI 13 1558 143791
Otricoli TR 13 1869 145660
Torri in Sabina RI 13 1256 146916
Contigliano RI 14 3783 150699
Colli sul Velino RI 14 533 151232
Casperia RI 15 1246 152478
Collevecchio RI 16 1577 154055
Magliano Sabina RI 16 3774 157829
Labro RI 16 374 158203
Selci RI 16 1106 159309
San Gemini TR 17 5018 164327
Roccantica RI 17 563 164890
Arrone TR 18 2763 167653
Cantalupo in Sabina RI 18 1685 169338
Morro Reatino RI 19 373 169711
Forano RI 19 3179 172890
Montefranco TR 19 1276 174166
Orte VT 19 8923 183089
Stimigliano RI 19 2328 185417
Amelia TR 20 11897 197314
Poggio Catino RI 20 1341 198655

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km S of Terni (111501 inhabitants)
43 Km E of Viterbo (67173 inhabitants)
53 Km N of Guidonia Montecelio (88673 inhabitants)
55 Km S of Foligno (57155 inhabitants)
58 Km N of Tivoli (56533 inhabitants)
65 Km N of Roma (2864731 inhabitants)
65 Km W of L'Aquila (69753 inhabitants)
74 Km S of Perugia (166134 inhabitants)
80 Km NE of Civitavecchia (52991 inhabitants)
83 Km NE of Fiumicino (78395 inhabitants)
88 Km N of Velletri (53303 inhabitants)
89 Km N of Pomezia (62966 inhabitants)
92 Km W of Teramo (54892 inhabitants)
97 Km N of Aprilia (73446 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.7 2021-02-14
16:34:57
42.47 12.62 12 2021-02-14
16:48:56
Sala Sismica INGV-Roma 87155871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-14 16:34:57 ± 0.11
Latitude 42.47 ± 0.01
Longitude 12.62 ± 0.01
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87155871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 605
Semi-minor axis of confidence ellipse (meter) 368
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 301
Circular confidence region, given by single value of horizontal uncertainty (meter) 610
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.6637
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 87155871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-14 16:48:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.COLB.HHZ. 2021-02-14T16:35:47.03 3.0 undecidable manual Sg -0.76 0
OT.OT14.EHZ. 2021-02-14T16:35:32.18 3.0 undecidable manual Pn 0.33 0
IV.OFFI.HHZ. 2021-02-14T16:35:28.06 3.0 undecidable manual S 0.9 0
IV.FIAM.HHZ. 2021-02-14T16:35:11.98 0.6 undecidable manual S 118 0.4182 91 -0.07 54
IV.FDMO.HHZ. 2021-02-14T16:35:10.38 0.6 undecidable manual P 31 0.6637 90 0.41 48
IV.MGAB.HNZ. 2021-02-14T16:35:09.01 0.6 undecidable manual P 320 0.5792 91 0.48 48
IV.INTR.HHZ. 2021-02-14T16:35:08.94 3.0 undecidable manual P -1.79 0
IV.GAVE.EHZ. 2021-02-14T16:35:08.76 0.6 undecidable manual S 42 0.3013 91 0.17 55
IV.CESI.HHZ. 2021-02-14T16:35:08.51 0.3 undecidable manual P 21 0.5756 91 0.05 80
IV.NRCA.HNN. 2021-02-14T16:35:07.52 0.3 undecidable manual P 45 0.5153 91 0.09 80
IV.BARO.EHZ. 2021-02-14T16:35:07.96 3.0 undecidable manual P 0
IT.MMP1.HGZ. 2021-02-14T16:35:06.41 1.0 undecidable manual S 156 0.2392 92 -0.32 27
IV.MTCE.HHN. 2021-02-14T16:35:06.84 0.1 undecidable manual P 168 0.4542 91 0.45 100
IV.FIAM.HHZ. 2021-02-14T16:35:05.30 0.3 undecidable manual P 118 0.4182 91 -0.47 75
IV.VIVA.HHZ. 2021-02-14T16:35:04.45 3.0 undecidable manual S -7.46 0
IT.GNU.HGZ. 2021-02-14T16:35:04.14 0.3 undecidable manual P 354 0.3372 91 -0.24 80
IV.ARRO.EHZ. 2021-02-14T16:35:04.92 0.3 undecidable manual S 44 0.1547 97 0.68 74
IV.MOMA.HHZ. 2021-02-14T16:35:04.15 0.3 undecidable manual P 354 0.3372 91 -0.23 80
IV.CESX.HHZ. 2021-02-14T16:35:03.80 0.3 undecidable manual S 350 0.1421 100 -0.07 87
IV.LNSS.HHZ. 2021-02-14T16:35:03.96 0.3 undecidable manual P 66 0.3381 91 -0.43 77
IV.SRES.HHE. 2021-02-14T16:35:03.22 1.0 undecidable manual P 199 0.2446 92 0.41 26
IV.GAVE.EHZ. 2021-02-14T16:35:03.96 0.6 undecidable manual P 42 0.3013 91 0.19 55
IT.MMP1.HGZ. 2021-02-14T16:35:02.68 0.6 undecidable manual P 156 0.2392 92 -0.02 57
IV.ARRO.EHZ. 2021-02-14T16:35:01.04 0.3 undecidable manual P 44 0.1547 97 -0.22 83
IV.CESX.HHZ. 2021-02-14T16:35:00.73 0.3 undecidable manual P 350 0.1421 100 -0.32 82
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHN. ML:1.8 0.0005825 0.3 AML other m 2021-02-14T16:35:05.41
IV.CESX.HHN. ML:1.7 0.0004485 0.36 AML other m 2021-02-14T16:35:05.67
IV.ARRO.EHE. ML:1.6 0.000317 1.38 AML other m 2021-02-14T16:35:06.13
IV.CESX.HHE. ML:1.6 0.0003765 1.04 AML other m 2021-02-14T16:35:07.01
IV.GAVE.EHE. ML:1.6 0.0001735 0.42 AML other m 2021-02-14T16:35:11.21
IV.GAVE.EHN. ML:1.7 0.000209 1.82 AML other m 2021-02-14T16:35:11.04
IV.MOMA.HHN. ML:1.8 0.00021 0.36 AML other m 2021-02-14T16:35:11.99
IV.MOMA.HHE. ML:1.7 0.0002 1.82 AML other m 2021-02-14T16:35:12.07
IV.MSSA.HHN. ML:3.2 0.0001675 0.76 AML other m 2021-02-14T16:36:51.08
IV.MSSA.HHE. ML:3.1 0.0001197 1.16 AML other m 2021-02-14T16:36:51.21
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download