Earthquake with magnitude of ML 0.9 on date 12-01-2021 and time 15:00:27 (Italy) in region 3 km SE Accumoli (RI)

A magnitude ML 0.9 earthquake occured in region: 3 km SE Accumoli (RI), on

  • 12-01-2021 14:00:27 (UTC)
  • 12-01-2021 15:00:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.67, 13.266 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
Accumoli RI 3 667 667
Amatrice RI 5 2657 3324
Cittareale RI 10 482 3806
Arquata del Tronto AP 12 1178 4984
Campotosto AQ 15 542 5526
Acquasanta Terme AP 16 2916 8442
Montereale AQ 16 2581 11023
Capitignano AQ 17 665 11688
Norcia PG 20 4957 16645
Montegallo AP 20 523 17168

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km W of Teramo (54892 inhabitants)
37 Km NW of L'Aquila (69753 inhabitants)
52 Km E of Terni (111501 inhabitants)
56 Km SE of Foligno (57155 inhabitants)
74 Km W of Montesilvano (53738 inhabitants)
81 Km W of Pescara (121014 inhabitants)
82 Km W of Chieti (51815 inhabitants)
86 Km SE of Perugia (166134 inhabitants)
87 Km NE of Guidonia Montecelio (88673 inhabitants)
87 Km NE of Tivoli (56533 inhabitants)
99 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 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 0.9 2021-01-12
14:00:27
42.6702 13.2658 12 2021-01-12
14:19:24
Sala Sismica INGV-Roma 86205331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-12 14:00:27 ± 0.07
Latitude 42.6702 ± 0.0036
Longitude 13.2658 ± 0.0049
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 86205331

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 399
Semi-minor axis of confidence ellipse (meter) 202
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 272
Circular confidence region, given by single value of horizontal uncertainty (meter) 400
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.03777
Epicentral distance of station farthest from the epicenter (degree) 0.25271
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 86205331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-12 14:19:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MC2.EHE. 2021-01-12T14:00:37.47 0.3 undecidable manual S 347 0.2473 93 0.26 70
IV.MMO1.EHZ. 2021-01-12T14:00:36.71 0.3 undecidable manual S 11 0.2329 93 -0.08 74
IV.TERO.HHZ. 2021-01-12T14:00:36.95 0.6 undecidable manual S 101 0.2527 92 -0.42 46
IV.LNSS.HHZ. 2021-01-12T14:00:35.06 0.3 undecidable manual S 248 0.179 95 -0.12 73
IV.NRCA.HNE. 2021-01-12T14:00:35.42 0.3 undecidable manual S 326 0.1979 94 -0.31 71
IV.CAMP.HHZ. 2021-01-12T14:00:34.63 0.6 undecidable manual S 142 0.1709 96 -0.31 47
IV.MTRA.EHZ. 2021-01-12T14:00:33.50 0.3 undecidable manual S 48 0.1295 106 -0.23 73
IV.TERO.HHZ. 2021-01-12T14:00:33.48 0.1 undecidable manual P 101 0.2527 92 0.32 93
IV.MC2.EHE. 2021-01-12T14:00:33.13 0.1 undecidable manual P 347 0.2473 93 0.06 98
IV.NRCA.HNE. 2021-01-12T14:00:32.16 0.1 undecidable manual P 326 0.1979 94 -0.06 99
IV.SMA1.EHZ. 2021-01-12T14:00:32.04 0.3 undecidable manual S 128 0.0648 138 -0.08 76
IV.MMO1.EHZ. 2021-01-12T14:00:32.85 0.1 undecidable manual P 11 0.2329 93 0.03 99
IV.T1299.HNE. 2021-01-12T14:00:31.60 0.3 undecidable manual S 161 0.0378 154 -0.08 76
IV.LNSS.HHZ. 2021-01-12T14:00:31.90 0.1 undecidable manual P 248 0.179 95 0 100
IV.CAMP.HHZ. 2021-01-12T14:00:31.68 0.3 undecidable manual P 142 0.1709 96 -0.08 74
IV.MTRA.EHZ. 2021-01-12T14:00:31.12 0.1 undecidable manual P 48 0.1295 106 0.06 100
IV.T1299.HNE. 2021-01-12T14:00:30.14 0.1 undecidable manual P 161 0.0378 154 0.26 98
IV.SMA1.EHZ. 2021-01-12T14:00:30.34 0.1 undecidable manual P 128 0.0648 138 0.21 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1 0.000144 1.1 AML other m 2021-01-12T14:00:32.73
IV.SMA1.EHN. ML:1 0.0001295 1.28 AML other m 2021-01-12T14:00:32.34
IV.MTRA.EHE. ML:0.7 5.057919E-5 0.16 AML other m 2021-01-12T14:00:33.83
IV.MTRA.EHN. ML:0.8 6.329484E-5 0.1984 AML other m 2021-01-12T14:00:33.84
IV.LNSS.HHE. ML:0.9 5.6165085E-5 0.096 AML other m 2021-01-12T14:00:35.45
IV.LNSS.HHN. ML:0.8 4.306806E-5 0.16 AML other m 2021-01-12T14:00:35.94
IV.TERO.HHE. ML:0.7 2.285608052E-5 0.064 AML other m 2021-01-12T14:00:37.21
IV.TERO.HHN. ML:0.9 3.8977365E-5 0.0768 AML other m 2021-01-12T14:00:37.05
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