Earthquake with magnitude of ML 1.6 on date 24-01-2021 and time 23:04:34 (Italy) in region 1 km NE Accumoli (RI)

A magnitude ML 1.6 earthquake occured in region: 1 km NE Accumoli (RI), on

  • 24-01-2021 22:04:34 (UTC)
  • 24-01-2021 23:04:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7, 13.25 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 1 667 667
Arquata del Tronto AP 9 1178 1845
Amatrice RI 9 2657 4502
Cittareale RI 12 482 4984
Acquasanta Terme AP 15 2916 7900
Norcia PG 16 4957 12857
Montegallo AP 17 523 13380
Campotosto AQ 19 542 13922
Cascia PG 20 3217 17139
Montereale AQ 20 2581 19720

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km W of Teramo (54892 inhabitants)
41 Km N of L'Aquila (69753 inhabitants)
52 Km E of Terni (111501 inhabitants)
53 Km SE of Foligno (57155 inhabitants)
76 Km W of Montesilvano (53738 inhabitants)
83 Km W of Pescara (121014 inhabitants)
84 Km SE of Perugia (166134 inhabitants)
85 Km W of Chieti (51815 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km NE of Tivoli (56533 inhabitants)
99 Km E of Viterbo (67173 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 1.6 2021-01-24
22:04:34
42.7 13.25 12 2021-01-24
23:31:03
Sala Sismica INGV-Roma 86546631
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-24 22:04:34 ± 0.05
Latitude 42.70 ± 0.00
Longitude 13.25 ± 0.00
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 86546631

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 409
Semi-minor axis of confidence ellipse (meter) 78
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 253
Circular confidence region, given by single value of horizontal uncertainty (meter) 410
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 41
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.07285
Epicentral distance of station farthest from the epicenter (degree) 0.55218
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 35
Type of magnitude ML
Reference to an origin 86546631
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-24 23:31:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2021-01-24T22:04:53.46 0.3 undecidable manual S 308 0.5522 91 0.05 69
IV.SAP2.EHN. 2021-01-24T22:04:49.93 0.3 undecidable manual S 15 0.4065 91 0.83 56
IV.CSP1.EHZ. 2021-01-24T22:04:48.61 0.3 undecidable manual S 355 0.3894 91 0.02 71
IV.CESI.HHZ. 2021-01-24T22:04:48.87 0.3 undecidable manual S 320 0.3948 91 0.11 70
IV.GUMA.HNE. 2021-01-24T22:04:48.44 0.6 undecidable manual S 9 0.3633 91 0.62 41
IT.MTCL.HGN. 2021-01-24T22:04:47.04 0.3 undecidable manual S 327 0.3444 92 -0.23 68
MN.AQU.HNZ. 2021-01-24T22:04:47.98 0.3 undecidable manual S 162 0.3669 91 0.04 72
IV.MF5.EHZ. 2021-01-24T22:04:47.08 0.3 undecidable manual S 28 0.3211 92 0.51 65
IV.FDMO.HHZ. 2021-01-24T22:04:47.44 0.3 undecidable manual S 340 0.3534 91 -0.11 70
IV.GIGS.HHE. 2021-01-24T22:04:46.61 0.3 undecidable manual S 137 0.3435 92 -0.63 61
IV.FEMA.HNN. 2021-01-24T22:04:45.87 0.3 undecidable manual S 330 0.2977 92 -0.03 71
IV.GAVE.EHZ. 2021-01-24T22:04:45.06 0.3 undecidable manual S 268 0.2644 92 0.16 72
IV.ASSB.HHZ. 2021-01-24T22:04:45.27 0.1 undecidable manual P 308 0.5522 91 -0.19 87
IV.MNTT.EHZ. 2021-01-24T22:04:44.31 0.6 undecidable manual P 35 0.4362 91 0.83 37
IV.TERO.HHZ. 2021-01-24T22:04:44.62 0.3 undecidable manual S 107 0.2698 92 -0.44 67
IV.SAP2.EHN. 2021-01-24T22:04:43.46 0.6 undecidable manual P 15 0.4065 91 0.49 43
IV.RM33.EHZ. 2021-01-24T22:04:43.00 0.3 undecidable manual S 188 0.197 94 0.09 73
IV.GUMA.HNE. 2021-01-24T22:04:42.52 0.6 undecidable manual P 9 0.3633 91 0.29 45
IV.MMO1.EHZ. 2021-01-24T22:04:42.79 0.3 undecidable manual S 15 0.2023 94 -0.27 70
IV.CSP1.EHZ. 2021-01-24T22:04:42.54 0.1 undecidable manual P 355 0.3894 91 -0.14 92
IV.LNSS.HHZ. 2021-01-24T22:04:42.73 0.3 undecidable manual S 237 0.1871 95 0.12 73
MN.AQU.HNZ. 2021-01-24T22:04:42.20 0.3 undecidable manual P 162 0.3669 91 -0.1 70
IV.CESI.HHZ. 2021-01-24T22:04:42.64 0.1 undecidable manual P 320 0.3948 91 -0.13 91
IV.MF5.EHZ. 2021-01-24T22:04:41.75 0.1 undecidable manual P 28 0.3211 92 0.24 92
IV.NRCA.HNZ. 2021-01-24T22:04:41.68 0.3 undecidable manual S 322 0.1646 97 -0.28 70
IV.FDMO.HHZ. 2021-01-24T22:04:41.83 0.1 undecidable manual P 340 0.3534 91 -0.25 90
IT.MTCL.HGN. 2021-01-24T22:04:41.71 0.3 undecidable manual P 327 0.3444 92 -0.2 68
IV.GIGS.HHE. 2021-01-24T22:04:41.51 0.3 undecidable manual P 137 0.3435 92 -0.39 66
IV.FEMA.HNN. 2021-01-24T22:04:40.93 0.3 undecidable manual P 330 0.2977 92 -0.19 69
IV.TERO.HHZ. 2021-01-24T22:04:40.32 0.1 undecidable manual P 107 0.2698 92 -0.31 91
IV.GAVE.EHZ. 2021-01-24T22:04:40.55 0.1 undecidable manual P 268 0.2644 92 0 96
IV.MTRA.EHZ. 2021-01-24T22:04:40.24 0.3 undecidable manual S 63 0.1169 112 -0.34 71
IV.LNSS.HHZ. 2021-01-24T22:04:39.36 0.1 undecidable manual P 237 0.1871 95 0.14 97
IV.RM33.EHZ. 2021-01-24T22:04:39.50 0.1 positive manual P 188 0.197 94 0.1 98
IV.T1299.HNN. 2021-01-24T22:04:39.88 0.3 undecidable manual S 163 0.0728 134 0.4 69
IV.SMA1.EHZ. 2021-01-24T22:04:39.85 0.3 undecidable manual S 141 0.0944 122 -0.14 74
IV.MMO1.EHZ. 2021-01-24T22:04:39.34 0.1 undecidable manual P 15 0.2023 94 -0.14 95
IV.MTRA.EHZ. 2021-01-24T22:04:38.03 0.1 positive manual P 63 0.1169 112 -0.02 100
IV.NRCA.HNZ. 2021-01-24T22:04:38.81 0.1 undecidable manual P 322 0.1646 97 -0.04 98
IV.SMA1.EHZ. 2021-01-24T22:04:37.92 0.1 undecidable manual P 141 0.0944 122 0.21 96
IV.T1299.HNN. 2021-01-24T22:04:37.78 0.1 undecidable manual P 163 0.0728 134 0.36 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.7 0.00064572625 0.1152 AML other m 2021-01-24T22:04:40.51
IV.MTRA.EHE. ML:1.5 0.0003306326 0.1408 AML other m 2021-01-24T22:04:41.01
IV.SMA1.EHN. ML:1.8 0.00072731845 0.1664 AML other m 2021-01-24T22:04:40.20
IV.MTRA.EHN. ML:1.5 0.00031498245 0.1536 AML other m 2021-01-24T22:04:41.02
IV.NRCA.HHN. ML:1.9 0.000622 0.14 AML other m 2021-01-24T22:04:41.99
IV.NRCA.HNN. ML:1.9 0.0006085 1.86 AML other m 2021-01-24T22:04:41.93
IV.NRCA.HNE. ML:2.1 0.001002 1.86 AML other m 2021-01-24T22:04:41.96
IV.NRCA.HHE. ML:2.1 0.00103554895 0.1792 AML other m 2021-01-24T22:04:41.96
IV.LNSS.HHN. ML:1.8 0.000472 0.2 AML other m 2021-01-24T22:04:43.28
IV.LNSS.HHE. ML:1.6 0.00027165 0.12 AML other m 2021-01-24T22:04:43.93
IV.TERO.HHN. ML:0 0.0002247329 0.1024 AML other m 2021-01-24T22:04:45.35
IV.TERO.HHE. ML:0 0.0002751362 0.1792 AML other m 2021-01-24T22:04:44.75
IV.GAVE.EHN. ML:1.7 0.00022678765 0.1792 AML other m 2021-01-24T22:04:45.38
IV.GAVE.EHE. ML:1.5 0.0001651107 0.1536 AML other m 2021-01-24T22:04:46.50
IV.MTRA.HNE. ML:1.6 0.0003600381 0.1536 AML other m 2021-01-24T22:04:41.01
IV.MTRA.HNN. ML:1.5 0.00032259505 0.1536 AML other m 2021-01-24T22:04:41.02
IV.LNSS.HNE. ML:1.6 0.00026091527 0.128 AML other m 2021-01-24T22:04:43.92
IV.LNSS.HNN. ML:1.8 0.0004548017 0.2176 AML other m 2021-01-24T22:04:43.28
IV.RM33.HNE. ML:1.6 0.00028561185 0.2304 AML other m 2021-01-24T22:04:43.96
IV.RM33.HNN. ML:1.4 0.00014466925 0.0896 AML other m 2021-01-24T22:04:43.98
IV.RM33.EHE. ML:1.6 0.0002754931 0.2176 AML other m 2021-01-24T22:04:43.96
IV.RM33.EHN. ML:1.4 0.0001516093 0.1792 AML other m 2021-01-24T22:04:43.21
IV.TERO.HNE. ML:1.8 0.0002729834 0.128 AML other m 2021-01-24T22:04:44.76
IV.TERO.HNN. ML:1.7 0.00024709385 0.0896 AML other m 2021-01-24T22:04:45.34
IV.GAVE.HNE. ML:1.6 0.000171439755 0.1536 AML other m 2021-01-24T22:04:45.41
IV.MF5.EHN. ML:1.3 7.6353075E-5 0.128 AML other m 2021-01-24T22:04:49.09
IV.FDMO.HHE. ML:1.4 9.4694315E-5 0.192 AML other m 2021-01-24T22:04:47.76
IV.FDMO.HHN. ML:1.5 0.00012158495 0.2048 AML other m 2021-01-24T22:04:47.65
IV.CSP1.EHE. ML:1.8 0.00019624295 0.2176 AML other m 2021-01-24T22:04:49.22
IV.CSP1.EHN. ML:1.9 0.00023273925 0.32 AML other m 2021-01-24T22:04:49.26
IV.CESI.HHE. ML:1.4 8.2729145E-5 0.2304 AML other m 2021-01-24T22:04:49.79
IV.CESI.HHN. ML:1.5 0.000102259545 0.192 AML other m 2021-01-24T22:04:49.81
IV.MNTT.EHE. ML:2.1 0.0003098502 0.1408 AML other m 2021-01-24T22:04:54.32
IV.ASSB.HHE. ML:1.4 4.3068765E-5 0.1664 AML other m 2021-01-24T22:04:54.81
IV.ASSB.HHN. ML:1.2 3.6361315E-5 0.1792 AML other m 2021-01-24T22:04:55.49
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