Earthquake with magnitude of ML 1.8 on date 02-12-2021 and time 03:41:20 (Italy) in region 5 km SW Accumoli (RI)

A magnitude ML 1.8 earthquake occured in region: 5 km SW Accumoli (RI), on

  • 02-12-2021 02:41:20 (UTC)
  • 02-12-2021 03:41:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.662, 13.214 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
Accumoli RI 5 667 667
Cittareale RI 7 482 1149
Amatrice RI 7 2657 3806
Arquata del Tronto AP 14 1178 4984
Montereale AQ 16 2581 7565
Capitignano AQ 17 665 8230
Campotosto AQ 17 542 8772
Cascia PG 18 3217 11989
Norcia PG 18 4957 16946
Borbona RI 18 617 17563
Posta RI 18 694 18257

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NW of L'Aquila (69753 inhabitants)
40 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
53 Km SE of Foligno (57155 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
84 Km SE of Perugia (166134 inhabitants)
84 Km NE of Guidonia Montecelio (88673 inhabitants)
85 Km W of Pescara (121014 inhabitants)
85 Km NE of Tivoli (56533 inhabitants)
86 Km W of Chieti (51815 inhabitants)
95 Km E of Viterbo (67173 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 2021-12-02
02:41:20
42.6622 13.2143 11 2021-12-02
02:54:55
Sala Sismica INGV-Roma 98035901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-02 02:41:20 ± 0.05
Latitude 42.6622 ± 0.0036
Longitude 13.2143 ± 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 98035901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 334
Semi-minor axis of confidence ellipse (meter) 295
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) 330
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.48114
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 31
Type of magnitude ML
Reference to an origin 98035901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-02 02:54:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LPEL.HHZ. 2021-12-02T02:41:52.06 3.0 undecidable manual S -0.16 0
IV.VAGA.HNZ. 2021-12-02T02:41:47.72 3.0 undecidable manual P 2.73 0
IV.SRES.HHZ. 2021-12-02T02:41:42.77 3.0 undecidable manual S -0.71 0
IV.FIAM.HHZ. 2021-12-02T02:41:34.56 0.3 undecidable manual S 190 0.4002 50 -0.02 70
IV.VCEL.EHZ. 2021-12-02T02:41:31.20 3.0 undecidable manual P 0.31 0
IV.MC2.EHZ. 2021-12-02T02:41:30.61 0.3 undecidable manual S 356 0.25 50 0.49 69
IV.OFFI.HHZ. 2021-12-02T02:41:30.15 3.0 positive manual P 0.6 0
IV.MMO1.EHZ. 2021-12-02T02:41:30.22 0.3 undecidable manual S 19 0.2509 50 0.07 73
IV.TERO.HHZ. 2021-12-02T02:41:30.80 0.3 undecidable manual S 98 0.2887 50 -0.48 64
IV.CESX.HHZ. 2021-12-02T02:41:29.38 3.0 positive manual P -0.09 0
IV.GAVE.EHZ. 2021-12-02T02:41:29.56 0.3 undecidable manual S 277 0.2374 50 -0.19 69
IV.CSP1.EHZ. 2021-12-02T02:41:29.13 3.0 negative manual P -0.21 0
IV.FAGN.HHZ. 2021-12-02T02:41:29.85 0.3 undecidable manual P 145 0.4811 50 -0.01 69
IV.FDMO.HHZ. 2021-12-02T02:41:28.44 3.0 positive manual P -0.05 0
IV.CAMP.HHZ. 2021-12-02T02:41:28.14 0.3 undecidable manual S 131 0.1907 50 -0.24 72
IV.FIAM.HHZ. 2021-12-02T02:41:28.44 0.1 undecidable manual P 190 0.4002 50 -0.05 93
IV.MF5.EHZ. 2021-12-02T02:41:28.59 3.0 positive manual P 0.26 0
IV.NRCA.HHZ. 2021-12-02T02:41:27.80 0.3 undecidable manual S 337 0.1862 117 -0.43 68
IV.ARRO.EHZ. 2021-12-02T02:41:27.41 3.0 undecidable manual P 0.23 0
IV.MTRA.EHZ. 2021-12-02T02:41:27.21 0.3 undecidable manual S 55 0.1637 120 -0.26 72
MN.AQU.HHE. 2021-12-02T02:41:27.81 0.6 undecidable manual P 155 0.3381 50 0.38 46
IV.TERO.HHZ. 2021-12-02T02:41:26.46 0.1 undecidable manual P 98 0.2887 50 -0.12 94
IV.LNSS.HHZ. 2021-12-02T02:41:26.70 0.3 undecidable manual S 245 0.1412 124 -0.03 76
IV.MC2.EHZ. 2021-12-02T02:41:26.04 0.1 undecidable manual P 356 0.25 50 0.13 98
IV.MMO1.EHZ. 2021-12-02T02:41:26.02 0.1 undecidable manual P 19 0.2509 50 0.09 98
IV.SMA1.EHZ. 2021-12-02T02:41:25.64 0.3 undecidable manual S 110 0.0944 135 0.3 71
IV.GAVE.EHZ. 2021-12-02T02:41:25.59 0.1 undecidable manual P 277 0.2374 50 -0.1 95
IV.MTRA.EHZ. 2021-12-02T02:41:24.42 0.1 undecidable manual P 55 0.1637 120 0.04 100
IV.NRCA.HHZ. 2021-12-02T02:41:24.72 0.1 undecidable manual P 337 0.1862 117 -0.1 97
IV.CAMP.HHZ. 2021-12-02T02:41:24.88 0.1 undecidable manual P 131 0.1907 50 -0.02 99
IV.LNSS.HHZ. 2021-12-02T02:41:24.10 0.1 undecidable manual P 245 0.1412 124 0.15 98
IV.SMA1.EHZ. 2021-12-02T02:41:23.51 0.1 undecidable manual P 110 0.0944 135 0.36 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:2.7 0.0065 0.24 AML other m 2021-12-02T02:41:26.09
IV.SMA1.EHN. ML:2.6 0.004935 1.64 AML other m 2021-12-02T02:41:26.15
IV.LNSS.HHN. ML:2 0.000865258 0.2 AML other m 2021-12-02T02:41:27.04
IV.LNSS.HNN. ML:2 0.00085173675 0.2096 AML other m 2021-12-02T02:41:27.05
IV.MTRA.EHN. ML:2.3 0.001738213 0.1408 AML other m 2021-12-02T02:41:27.44
IV.MTRA.HNN. ML:2.3 0.001772621 0.1504 AML other m 2021-12-02T02:41:27.44
IV.LNSS.HNE. ML:1.8 0.00058518885 0.2704 AML other m 2021-12-02T02:41:26.88
IV.LNSS.HHE. ML:1.8 0.00060658155 0.1408 AML other m 2021-12-02T02:41:26.88
IV.MTRA.HNE. ML:2.2 0.001435468 0.32 AML other m 2021-12-02T02:41:28.08
IV.MTRA.EHE. ML:2.2 0.0014468655 0.32 AML other m 2021-12-02T02:41:28.09
IV.NRCA.HHE. ML:2.2 0.0010185 1.82 AML other m 2021-12-02T02:41:27.05
IV.NRCA.HNE. ML:2.1 0.00096915525 0.1904 AML other m 2021-12-02T02:41:28.05
IV.NRCA.HHN. ML:1.8 0.00049214655 0.1408 AML other m 2021-12-02T02:41:28.08
IV.NRCA.HNN. ML:1.8 0.0005025 0.12 AML other m 2021-12-02T02:41:28.14
IV.CAMP.HHE. ML:1.4 0.0001610513 0.3408 AML other m 2021-12-02T02:41:28.72
IV.CAMP.HHN. ML:1.5 0.0002325659 0.24 AML other m 2021-12-02T02:41:29.31
IV.GAVE.EHE. ML:2 0.000607 0.22 AML other m 2021-12-02T02:41:30.20
IV.GAVE.EHN. ML:1.9 0.0004219151 0.24 AML other m 2021-12-02T02:41:29.81
IV.TERO.HNN. ML:2 0.00053080515 0.0608 AML other m 2021-12-02T02:41:30.97
IV.TERO.HNE. ML:1.9 0.00033676265 0.1504 AML other m 2021-12-02T02:41:32.49
IV.ARRO.EHE. ML:1.5 0.00012372705 0.1792 AML other m 2021-12-02T02:41:33.96
IV.FDMO.HHE. ML:1.2 4.7786875E-5 0.2608 AML other m 2021-12-02T02:41:35.72
IV.ARRO.EHN. ML:1.6 0.0001480073 0.2 AML other m 2021-12-02T02:41:36.06
IV.MF5.EHN. ML:1.6 0.000136621415 0.16 AML other m 2021-12-02T02:41:36.78
IV.MF5.EHE. ML:1.6 0.000133181865 0.4592 AML other m 2021-12-02T02:41:35.81
IV.FDMO.HHN. ML:1.2 5.302388E-5 0.1808 AML other m 2021-12-02T02:41:37.31
IV.OFFI.HHE. ML:2 0.00026020755 0.36 AML other m 2021-12-02T02:41:40.46
IV.OFFI.HHN. ML:2.1 0.000336213 0.48 AML other m 2021-12-02T02:41:39.30
IV.FAGN.HHE. ML:1.8 0.00014421525 0.48 AML other m 2021-12-02T02:41:46.34
IV.FAGN.HHN. ML:1.9 0.0001922498 0.3392 AML other m 2021-12-02T02:41:41.18
IV.GAVE.HNE. ML:2 0.00060833695 0.2304 AML other m 2021-12-02T02:41:30.19
IV.GAVE.HNN. ML:1.5 0.0001725113 0.6112 AML other m 2021-12-02T02:41:29.17
IV.TERO.HHN. ML:2 0.0005396875 0.0592 AML other m 2021-12-02T02:41:30.97
IV.FIAM.HHE. ML:1 2.941865E-5 0.2592 AML other m 2021-12-02T02:41:34.77
IV.FIAM.HHN. ML:1.1 3.7389645E-5 0.16 AML other m 2021-12-02T02:41:35.65
IV.CSP1.EHE. ML:1.6 0.00010717516 0.2592 AML other m 2021-12-02T02:41:36.95
IV.CSP1.EHN. ML:1.6 0.0001151882 0.32 AML other m 2021-12-02T02:41:38.23
IV.CESX.HHE. ML:1.5 7.372552E-5 0.36 AML other m 2021-12-02T02:41:39.71
IV.CESX.HHN. ML:1.6 8.8213815E-5 0.2416 AML other m 2021-12-02T02:41:38.97
IV.VCEL.EHE. ML:1.8 0.00014043855 0.32 AML other m 2021-12-02T02:41:41.84
IV.VCEL.EHN. ML:2 0.0002270085 0.2592 AML other m 2021-12-02T02:41:41.67
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