Earthquake with magnitude of ML 1.8 on date 01-11-2021 and time 14:25:12 (Italy) in region 6 km SE Leonessa (RI)

A magnitude ML 1.8 earthquake occured in region: 6 km SE Leonessa (RI), on

  • 01-11-2021 13:25:12 (UTC)
  • 01-11-2021 14:25:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.516, 13.006 at 11 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
Leonessa RI 6 2435 2435
Posta RI 8 694 3129
Micigliano RI 8 127 3256
Cantalice RI 10 2755 6011
Poggio Bustone RI 10 2055 8066
Borbona RI 11 617 8683
Rivodutri RI 12 1253 9936
Antrodoco RI 13 2588 12524
Borgo Velino RI 13 972 13496
Castel Sant'Angelo RI 14 1308 14804
Morro Reatino RI 14 373 15177
Cittaducale RI 15 6828 22005
Polino TR 15 233 22238
Monteleone di Spoleto PG 16 599 22837
Labro RI 17 374 23211
Rieti RI 17 47698 70909
Cittareale RI 17 482 71391
Colli sul Velino RI 19 533 71924
Cagnano Amiterno AQ 19 1369 73293
Montereale AQ 20 2581 75874

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Terni (111501 inhabitants)
37 Km NW of L'Aquila (69753 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
60 Km W of Teramo (54892 inhabitants)
62 Km NE of Guidonia Montecelio (88673 inhabitants)
64 Km N of Tivoli (56533 inhabitants)
75 Km E of Viterbo (67173 inhabitants)
81 Km NE of Roma (2864731 inhabitants)
83 Km SE of Perugia (166134 inhabitants)
94 Km W of Montesilvano (53738 inhabitants)
94 Km N of Velletri (53303 inhabitants)
97 Km W of Chieti (51815 inhabitants)
99 Km W of Pescara (121014 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 1.8 2021-11-01
13:25:12
42.5162 13.0055 11 2021-11-01
13:33:21
Sala Sismica INGV-Roma 97142731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-01 13:25:12 ± 0.09
Latitude 42.5162 ± 0.0054
Longitude 13.0055 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97142731

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 607
Semi-minor axis of confidence ellipse (meter) 334
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 357
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) 97
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 16
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
Epicentral distance of station farthest from the epicenter (degree) 0.37502
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 97142731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-01 13:33:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2021-11-01T13:25:46.31 3.0 undecidable manual S 0.19 0
IV.CSP1.EHZ. 2021-11-01T13:25:34.25 3.0 undecidable manual S -0.16 0
IV.MTRA.EHZ. 2021-11-01T13:25:26.29 0.6 undecidable manual S 50 0.375 50 -0.2 47
MN.AQU.HNE. 2021-11-01T13:25:26.20 0.6 undecidable manual S 119 0.3363 50 0.86 38
IV.MF5.EHZ. 2021-11-01T13:25:24.69 3.0 negative manual P 0.39 0
IT.MMP1.HGN. 2021-11-01T13:25:24.99 0.6 undecidable manual S 216 0.3274 50 -0.09 48
IV.CAMP.HHE. 2021-11-01T13:25:24.21 0.3 undecidable manual S 86 0.2977 50 0.01 74
IV.CSP1.EHZ. 2021-11-01T13:25:24.61 3.0 undecidable manual P -0.08 0
IV.T1299.EHE. 2021-11-01T13:25:22.61 0.3 undecidable manual S 60 0.2356 50 0.25 71
IV.TERO.HHZ. 2021-11-01T13:25:21.74 3.0 undecidable manual P -0.07 0
IV.ARRO.EHZ. 2021-11-01T13:25:20.91 0.3 undecidable manual S 290 0.1871 50 -0.03 75
IT.MMP1.HGN. 2021-11-01T13:25:20.06 0.1 undecidable manual P 216 0.3274 50 0.13 96
IV.MTRA.EHZ. 2021-11-01T13:25:20.54 0.1 undecidable manual P 50 0.375 50 -0.2 93
IV.NRCA.HHZ. 2021-11-01T13:25:19.76 3.0 undecidable manual P -0.07 0
MN.AQU.HNE. 2021-11-01T13:25:19.84 0.1 undecidable manual P 119 0.3363 50 -0.24 93
IV.CESX.HHZ. 2021-11-01T13:25:19.03 3.0 undecidable manual P -0.66 0
IV.RM33.EHZ. 2021-11-01T13:25:19.71 0.3 undecidable manual S 93 0.1538 123 -0.22 73
IV.CAMP.HHE. 2021-11-01T13:25:19.27 0.1 undecidable manual P 86 0.2977 50 -0.15 96
IV.T1299.EHE. 2021-11-01T13:25:18.36 0.1 undecidable manual P 60 0.2356 50 0.01 100
IV.LNSS.HHZ. 2021-11-01T13:25:18.14 0.3 undecidable manual S 16 0.0908 137 0.11 75
IV.ARRO.EHZ. 2021-11-01T13:25:17.49 0.1 undecidable manual P 290 0.1871 50 -0.05 100
IV.RM33.EHZ. 2021-11-01T13:25:16.92 1.0 undecidable manual P 93 0.1538 123 -0.03 25
IV.LNSS.HHZ. 2021-11-01T13:25:16.05 0.1 undecidable manual P 16 0.0908 137 0.19 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HNE. ML:2 0.001345 0.14 AML other m 2021-11-01T13:25:18.34
IV.LNSS.HHE. ML:2 0.00136 0.14 AML other m 2021-11-01T13:25:18.27
IV.LNSS.HHN. ML:2 0.001305 1 AML other m 2021-11-01T13:25:18.87
IV.LNSS.HNN. ML:2 0.00122 1 AML other m 2021-11-01T13:25:18.37
IV.RM33.EHN. ML:1.8 0.0005385 0.22 AML other m 2021-11-01T13:25:19.88
IV.RM33.HNN. ML:1.8 0.0005725 1.18 AML other m 2021-11-01T13:25:20.87
IV.RM33.HNE. ML:1.9 0.000607 0.5 AML other m 2021-11-01T13:25:20.71
IV.RM33.EHE. ML:1.8 0.000545 0.26 AML other m 2021-11-01T13:25:20.71
IV.ARRO.EHE. ML:1.5 0.000213 1.02 AML other m 2021-11-01T13:25:21.51
IV.ARRO.EHN. ML:1.5 0.0002365 0.14 AML other m 2021-11-01T13:25:22.38
IV.NRCA.HHE. ML:1.8 0.000269 0.14 AML other m 2021-11-01T13:25:25.34
IV.NRCA.HHN. ML:1.7 0.000182 0.12 AML other m 2021-11-01T13:25:25.83
IV.MTRA.EHN. ML:1.9 0.0002365 1.16 AML other m 2021-11-01T13:25:26.59
IV.MTRA.EHE. ML:1.8 0.00022 0.58 AML other m 2021-11-01T13:25:27.01
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