Earthquake with magnitude of ML 1.3 on date 20-01-2021 and time 00:46:16 (Italy) in region 9 km NE L'Aquila (AQ)

A magnitude ML 1.3 earthquake occured in region: 9 km NE L'Aquila (AQ), on

  • 19-01-2021 23:46:16 (UTC)
  • 20-01-2021 00:46:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.41, 13.47 at 20 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
L'Aquila AQ 9 69753 69753
Poggio Picenze AQ 11 1136 70889
Fossa AQ 13 721 71610
Barisciano AQ 13 1828 73438
Ocre AQ 14 1167 74605
Sant'Eusanio Forconese AQ 14 394 74999
Pietracamela TE 14 271 75270
Pizzoli AQ 15 4326 79596
San Demetrio ne' Vestini AQ 15 1854 81450
Crognaleto TE 16 1297 82747
Santo Stefano di Sessanio AQ 16 111 82858
Barete AQ 16 737 83595
Villa Sant'Angelo AQ 16 424 84019
Fano Adriano TE 17 296 84315
Lucoli AQ 17 1011 85326
Scoppito AQ 18 3727 89053
Prata d'Ansidonia AQ 18 496 89549
Campotosto AQ 19 542 90091
Capitignano AQ 19 665 90756
Isola del Gran Sasso d'Italia TE 19 4773 95529
Fagnano Alto AQ 19 418 95947
Rocca di Cambio AQ 19 533 96480
Tornimparte AQ 19 3187 99667

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km NE of L'Aquila (69753 inhabitants)
34 Km SW of Teramo (54892 inhabitants)
57 Km W of Montesilvano (53738 inhabitants)
58 Km W of Chieti (51815 inhabitants)
61 Km W of Pescara (121014 inhabitants)
70 Km E of Terni (111501 inhabitants)
74 Km NE of Tivoli (56533 inhabitants)
76 Km NE of Guidonia Montecelio (88673 inhabitants)
87 Km SE of Foligno (57155 inhabitants)
99 Km NE of Velletri (53303 inhabitants)
100 Km NE of Roma (2864731 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 1.3 2021-01-19
23:46:16
42.41 13.47 20 2021-01-19
23:55:41
Sala Sismica INGV-Roma 86386661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-19 23:46:16 ± 0.11
Latitude 42.41 ± 0.00
Longitude 13.47 ± 0.01
Depth (km) 20 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86386661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 566
Semi-minor axis of confidence ellipse (meter) 416
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 47
Circular confidence region, given by single value of horizontal uncertainty (meter) 570
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.51081
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 86386661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-19 23:55:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CPGN.EHZ. 2021-01-19T23:47:02.47 3.0 undecidable manual Sn 0 0
IV.ATFO.HHZ. 2021-01-19T23:46:38.70 3.0 undecidable manual P 3.33 0
IV.T0110.HHZ. 2021-01-19T23:46:27.53 0.3 undecidable manual S 129 0.2878 113 0 73
IV.TERO.HHZ. 2021-01-19T23:46:26.05 0.3 undecidable manual S 24 0.2338 119 -0.05 73
IV.NRCA.HHZ. 2021-01-19T23:46:26.13 0.1 undecidable manual P 328 0.4991 102 -0.01 93
IV.INTR.HHZ. 2021-01-19T23:46:25.90 0.1 undecidable manual P 141 0.5108 101 -0.43 85
IV.RM33.EHZ. 2021-01-19T23:46:25.66 0.3 undecidable manual S 298 0.2149 122 0.06 73
IV.FAGN.HHZ. 2021-01-19T23:46:24.55 0.3 undecidable manual S 150 0.1655 130 0.13 72
IV.T0110.HHZ. 2021-01-19T23:46:22.70 1.0 positive manual P 129 0.2878 113 0.03 24
IV.GIGS.HHN. 2021-01-19T23:46:22.57 0.3 undecidable manual S 59 0.0854 150 -0.33 71
IV.VCEL.EHZ. 2021-01-19T23:46:22.70 0.1 undecidable manual P 93 0.2716 114 0.28 92
IV.SMA1.EHZ. 2021-01-19T23:46:22.12 0.6 negative manual P 335 0.2428 118 0.14 48
IV.RM33.EHZ. 2021-01-19T23:46:21.62 0.1 undecidable manual P 298 0.2149 122 0.06 97
IV.TERO.HHZ. 2021-01-19T23:46:21.96 0.1 negative manual P 24 0.2338 119 0.11 96
IV.CAMP.HHZ. 2021-01-19T23:46:20.47 0.1 undecidable manual P 340 0.1349 137 -0.03 99
IV.FAGN.HHZ. 2021-01-19T23:46:20.90 0.1 negative manual P 150 0.1655 130 0.02 99
MN.AQU.HNE. 2021-01-19T23:46:20.00 0.1 undecidable manual P 222 0.0746 154 0.09 99
IV.GIGS.HHN. 2021-01-19T23:46:19.96 0.1 undecidable manual P 59 0.0854 150 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHE. ML:0.9 3.85E-5 0.42 AML other m 2021-01-19T23:46:25.84
IV.RM33.EHN. ML:1 5.25E-5 1.62 AML other m 2021-01-19T23:46:25.99
IV.FAGN.HHE. ML:1.9 0.000434 1.72 AML other m 2021-01-19T23:46:26.87
IV.TERO.HHN. ML:1.3 8.5E-5 0.28 AML other m 2021-01-19T23:46:26.35
IV.TERO.HHE. ML:1.4 0.00011015 0.26 AML other m 2021-01-19T23:46:26.38
IV.FAGN.HHN. ML:1.6 0.000217 0.34 AML other m 2021-01-19T23:46:26.86
IV.T0110.HHE. ML:1.3 8.255E-5 0.42 AML other m 2021-01-19T23:46:28.23
IV.T0110.HHN. ML:1.3 7.83E-5 0.5 AML other m 2021-01-19T23:46:28.04
IV.VCEL.EHE. ML:1.3 9.005E-5 0.96 AML other m 2021-01-19T23:46:28.48
IV.VCEL.EHN. ML:1.3 8.82E-5 0.84 AML other m 2021-01-19T23:46:29.65
IV.NRCA.HHE. ML:1.1 2.98E-5 0.14 AML other m 2021-01-19T23:46:36.17
IV.NRCA.HHN. ML:1.1 2.255E-5 1.02 AML other m 2021-01-19T23:46:36.09
IV.INTR.HHE. ML:1.1 2.675E-5 0.42 AML other m 2021-01-19T23:46:37.59
IV.INTR.HHN. ML:1.2 3.345E-5 0.42 AML other m 2021-01-19T23:46:38.62
IV.CPGN.EHE. ML:2.4 8.725E-5 1.52 AML other m 2021-01-19T23:46:47.00
IV.CPGN.EHN. ML:2.7 0.000202 1.58 AML other m 2021-01-19T23:46:47.12
IV.CPGN.HNE. ML:3.4 0.000803 0.4 AML other m 2021-01-19T23:46:48.89
IV.CPGN.HNN. ML:3.5 0.0012015 1.6 AML other m 2021-01-19T23:46:48.10
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