INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.2 on date 21-02-2019 and time 19:14:56 (UTC) in region 6 km N L'Aquila (AQ)

A magnitude ML 1.2 earthquake occured in region: 6 km N L'Aquila (AQ), on

  • 21-02-2019 19:14:56 (UTC)
  • 21-02-2019 20:14:56 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.41, 13.38 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
L'Aquila AQ 6 69753 69753
Pizzoli AQ 8 4326 74079
Barete AQ 10 737 74816
Scoppito AQ 11 3727 78543
Lucoli AQ 14 1011 79554
Cagnano Amiterno AQ 14 1369 80923
Capitignano AQ 14 665 81588
Tornimparte AQ 15 3187 84775
Fossa AQ 15 721 85496
Ocre AQ 16 1167 86663
Poggio Picenze AQ 16 1136 87799
Campotosto AQ 17 542 88341
Montereale AQ 17 2581 90922
Crognaleto TE 17 1297 92219
Sant'Eusanio Forconese AQ 18 394 92613
Pietracamela TE 19 271 92884
Barisciano AQ 19 1828 94712
San Demetrio ne' Vestini AQ 20 1854 96566
Villa Sant'Angelo AQ 20 424 96990

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km N of L'Aquila (69753 inhabitants)
38 Km SW of Teramo (54892 inhabitants)
63 Km E of Terni (111501 inhabitants)
64 Km W of Montesilvano (53738 inhabitants)
65 Km W of Chieti (51815 inhabitants)
68 Km W of Pescara (121014 inhabitants)
69 Km NE of Tivoli (56533 inhabitants)
71 Km NE of Guidonia Montecelio (88673 inhabitants)
83 Km SE of Foligno (57155 inhabitants)
94 Km NE of Roma (2864731 inhabitants)
95 Km NE of Velletri (53303 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
Rev 100 ML 1.2 2019-02-21
19:14:56
42.41 13.39 11 2019-02-21
19:24:03
Sala Sismica INGV-Roma 65769491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-21 19:14:56 ± 0.11
Latitude 42.41 ± 0.01
Longitude 13.39 ± 0.01
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 65769491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 710
Semi-minor axis of confidence ellipse (meter) 567
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 18
Circular confidence region, given by single value of horizontal uncertainty (meter) 710
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.46945
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 21
Type of magnitude ML
Reference to an origin 65769491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-21 19:24:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IT.VNF1.HGZ. 2019-02-21T19:15:33.56 3.0 undecidable manual S -0.03 0
IV.SENI.HNZ. 2019-02-21T19:15:20.37 3.0 undecidable manual P 0.36 0
IV.ARVD.HHZ. 2019-02-21T19:15:14.61 3.0 undecidable manual P -3.12 0
IV.TERO.HHZ. 2019-02-21T19:15:06.52 0.6 undecidable manual S 37 0.268 50 -0.16 48
IV.FIAM.HHZ. 2019-02-21T19:15:05.93 0.6 undecidable manual S 235 0.2428 50 0.01 50
IV.NRCA.HHZ. 2019-02-21T19:15:05.56 0.1 negative manual P 335 0.4694 50 -0.13 94
IV.VCEL.EHZ. 2019-02-21T19:15:04.07 0.3 undecidable manual P 92 0.3363 50 0.66 63
IV.T0110.HHZ. 2019-02-21T19:15:03.72 0.3 undecidable manual P 122 0.3399 50 0.25 70
IV.RM33.EHZ. 2019-02-21T19:15:03.57 0.6 undecidable manual S 309 0.161 121 0.14 50
IV.CAMP.HHZ. 2019-02-21T19:15:02.68 0.3 undecidable manual S 8 0.1286 127 0.29 73
IV.GIGS.HHZ. 2019-02-21T19:15:02.61 0.3 undecidable manual S 72 0.1457 124 -0.31 72
IV.TERO.HHZ. 2019-02-21T19:15:02.03 0.3 undecidable manual P 37 0.268 50 -0.22 72
IV.T1299.HNZ. 2019-02-21T19:15:01.76 0.1 undecidable manual P 341 0.2383 50 0.02 100
IV.FIAM.HHZ. 2019-02-21T19:15:01.10 1.0 positive manual P 235 0.2428 50 -0.71 21
IV.SMA1.EHZ. 2019-02-21T19:15:01.48 0.3 undecidable manual P 351 0.2248 50 -0.03 75
IV.FAGN.HHZ. 2019-02-21T19:15:01.06 0.6 undecidable manual P 134 0.2041 50 -0.09 50
IV.RM33.EHZ. 2019-02-21T19:15:00.05 1.0 undecidable manual P 309 0.161 121 -0.33 24
IV.CAMP.HHZ. 2019-02-21T19:14:59.91 0.3 undecidable manual P 8 0.1286 127 0.13 75
IV.GIGS.HHZ. 2019-02-21T19:14:59.89 0.3 undecidable manual P 72 0.1457 124 -0.19 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GIGS.HHE. ML:1.1 0.000109826955 0.1408 AML other m 2019-02-21T19:15:02.68
IV.GIGS.HHN. ML:0.7 4.680481E-5 0.192 AML other m 2019-02-21T19:15:02.85
IV.CAMP.HHE. ML:1 9.074224E-5 0.3584 AML other m 2019-02-21T19:15:02.87
IV.CAMP.HHN. ML:1.3 0.00018910135 0.256 AML other m 2019-02-21T19:15:02.89
IV.RM33.EHE. ML:1.3 0.00015540635 0.2816 AML other m 2019-02-21T19:15:04.69
IV.RM33.EHN. ML:1.2 0.00012046095 0.2176 AML other m 2019-02-21T19:15:03.72
IV.RM33.HNE. ML:1.3 0.0001557061 0.2304 AML other m 2019-02-21T19:15:04.70
IV.RM33.HNN. ML:1.2 0.00013414675 0.2432 AML other m 2019-02-21T19:15:03.72
IV.FIAM.HHE. ML:0.6 1.778983E-5 0.2688 AML other m 2019-02-21T19:15:08.31
IV.FIAM.HHN. ML:0.6 1.872944E-5 0.4992 AML other m 2019-02-21T19:15:07.71
IV.SMA1.EHE. ML:1 6.2649465E-5 0.192 AML other m 2019-02-21T19:15:07.41
IV.SMA1.EHN. ML:1.1 7.0736135E-5 0.3456 AML other m 2019-02-21T19:15:07.45
IV.TERO.HHE. ML:1.1 5.455314E-5 0.1152 AML other m 2019-02-21T19:15:06.75
IV.TERO.HHN. ML:1.1 5.6382455E-5 0.2176 AML other m 2019-02-21T19:15:09.67
IV.TERO.HNE. ML:1.4 0.000136191355 0.8064 AML other m 2019-02-21T19:15:10.04
IV.TERO.HNN. ML:1.2 7.392331E-5 0.576 AML other m 2019-02-21T19:15:06.52
IV.T0110.HHE. ML:1.2 6.5715275E-5 0.4608 AML other m 2019-02-21T19:15:10.40
IV.T0110.HHN. ML:1.3 7.870707E-5 0.3712 AML other m 2019-02-21T19:15:11.88
IV.VCEL.EHE. ML:1.2 6.4133905E-5 0.3584 AML other m 2019-02-21T19:15:12.56
IV.VCEL.EHN. ML:1.2 6.725539E-5 0.3072 AML other m 2019-02-21T19:15:11.80
IV.NRCA.HNE. ML:1.9 0.00019627325 0.4736 AML other m 2019-02-21T19:15:18.62
IV.NRCA.HHE. ML:1.3 5.0456815E-5 0.128 AML other m 2019-02-21T19:15:14.16
IV.NRCA.HHN. ML:1.4 6.110667E-5 0.1152 AML other m 2019-02-21T19:15:14.48
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