Earthquake with magnitude of ML 1.4 on date 19-11-2021 and time 10:24:21 (UTC) in region 5 km W Stroncone (TR)

A magnitude ML 1.4 earthquake occured in region: 5 km W Stroncone (TR), on

  • 19-11-2021 10:24:21 (UTC)
  • 19-11-2021 11:24:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.496, 12.608 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
Stroncone TR 5 4917 4917
Terni TR 8 111501 116418
Narni TR 8 19785 136203
Configni RI 8 633 136836
Calvi dell'Umbria TR 11 1856 138692
Cottanello RI 12 563 139255
Vacone RI 12 256 139511
Otricoli TR 13 1869 141380
Montasola RI 14 395 141775
Greccio RI 14 1558 143333
Colli sul Velino RI 14 533 143866
San Gemini TR 14 5018 148884
Montebuono RI 14 883 149767
Tarano RI 16 1444 151211
Torri in Sabina RI 16 1256 152467
Contigliano RI 16 3783 156250
Labro RI 16 374 156624
Arrone TR 17 2763 159387
Montefranco TR 17 1276 160663
Amelia TR 18 11897 172560
Magliano Sabina RI 18 3774 176334
Casperia RI 18 1246 177580
Collevecchio RI 18 1577 179157
Orte VT 19 8923 188080
Morro Reatino RI 19 373 188453
Selci RI 20 1106 189559
Montecastrilli TR 20 5022 194581

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km SW of Terni (111501 inhabitants)
42 Km E of Viterbo (67173 inhabitants)
52 Km S of Foligno (57155 inhabitants)
56 Km N of Guidonia Montecelio (88673 inhabitants)
61 Km N of Tivoli (56533 inhabitants)
67 Km W of L'Aquila (69753 inhabitants)
68 Km N of Roma (2864731 inhabitants)
70 Km S of Perugia (166134 inhabitants)
81 Km NE of Civitavecchia (52991 inhabitants)
86 Km NE of Fiumicino (78395 inhabitants)
91 Km N of Velletri (53303 inhabitants)
92 Km W of Teramo (54892 inhabitants)
92 Km N of Pomezia (62966 inhabitants)
100 Km N of Aprilia (73446 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.4 2021-11-19
10:24:21
42.4957 12.6085 10 2021-11-19
10:30:02
Sala Sismica INGV-Roma 97587181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-19 10:24:21 ± 0.14
Latitude 42.4957 ± 0.0063
Longitude 12.6085 ± 0.0049
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97587181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 800
Semi-minor axis of confidence ellipse (meter) 320
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 25
Circular confidence region, given by single value of horizontal uncertainty (meter) 800
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 281
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.11421
Epicentral distance of station farthest from the epicenter (degree) 0.33545
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 97587181
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-19 10:30:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LNSS.HHZ. 2021-11-19T10:24:34.09 0.1 undecidable manual S 71 0.3354 50 0.01 96
IV.GAVE.EHZ. 2021-11-19T10:24:32.64 0.1 undecidable manual S 47 0.2878 50 -0.03 97
IV.GAVE.EHZ. 2021-11-19T10:24:28.20 0.6 undecidable manual P 47 0.2878 50 0.28 46
IV.LNSS.HHZ. 2021-11-19T10:24:28.69 0.6 negative manual P 71 0.3354 50 -0.05 48
IV.MOMA.HHZ. 2021-11-19T10:24:28.20 0.3 negative manual P 355 0.3094 50 -0.09 71
IV.CESX.HHE. 2021-11-19T10:24:27.05 0.1 undecidable manual S 352 0.1142 128 0.02 100
IV.ARRO.EHN. 2021-11-19T10:24:25.14 0.1 undecidable manual P 54 0.143 122 -0.05 99
IV.CESX.HHE. 2021-11-19T10:24:24.69 0.1 undecidable manual P 352 0.1142 128 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESX.HHN. ML:1.4 0.000267 0.34 AML other m 2021-11-19T10:24:27.31
IV.ARRO.EHE. ML:1 9.29E-5 0.5 AML other m 2021-11-19T10:24:29.73
IV.ARRO.EHN. ML:1.2 0.00013 0.98 AML other m 2021-11-19T10:24:30.66
IV.CESX.HHE. ML:1.3 0.0002065 1.48 AML other m 2021-11-19T10:24:30.17
IV.MOMA.HNN. ML:1.7 0.0002125 0.38 AML other m 2021-11-19T10:24:34.53
IV.MOMA.HHN. ML:1.7 0.0002095 0.26 AML other m 2021-11-19T10:24:34.66
IV.LNSS.HHE. ML:1.3 7.275E-5 0.42 AML other m 2021-11-19T10:24:35.59
IV.MOMA.HHE. ML:1.6 0.0001575 0.66 AML other m 2021-11-19T10:24:35.54
IV.MOMA.HNE. ML:1.7 0.000202 1.02 AML other m 2021-11-19T10:24:35.55
IV.LNSS.HHN. ML:1.3 6.985E-5 0.62 AML other m 2021-11-19T10:24:35.28
IV.GAVE.EHE. ML:1.2 6.435E-5 0.82 AML other m 2021-11-19T10:24:36.23
IV.GAVE.EHN. ML:1.1 6.165E-5 0.16 AML other m 2021-11-19T10:24:36.24
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