Earthquake with magnitude of ML 1.2 on date 18-04-2020 and time 02:34:30 (Italy) in region 5 km N Aielli (AQ)

A magnitude ML 1.2 earthquake occured in region: 5 km N Aielli (AQ), on

  • 18-04-2020 00:34:30 (UTC)
  • 18-04-2020 02:34:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.12, 13.58 at 10 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
Aielli AQ 5 1475 1475
Celano AQ 5 11017 12492
Ovindoli AQ 6 1227 13719
Cerchio AQ 7 1635 15354
Collarmele AQ 8 894 16248
Secinaro AQ 9 359 16607
Gagliano Aterno AQ 10 254 16861
Tione degli Abruzzi AQ 10 310 17171
Rocca di Mezzo AQ 11 1526 18697
Castelvecchio Subequo AQ 12 982 19679
Fontecchio AQ 12 369 20048
Pescina AQ 13 4133 24181
Acciano AQ 13 327 24508
Molina Aterno AQ 13 386 24894
Castel di Ieri AQ 13 303 25197
San Benedetto dei Marsi AQ 13 3909 29106
Fagnano Alto AQ 15 418 29524
Rocca di Cambio AQ 15 533 30057
Massa d'Albe AQ 16 1476 31533
Caporciano AQ 16 230 31763
Goriano Sicoli AQ 16 569 32332
Avezzano AQ 17 42515 74847
San Benedetto in Perillis AQ 17 113 74960
Villa Sant'Angelo AQ 17 424 75384
Prata d'Ansidonia AQ 17 496 75880
Navelli AQ 17 554 76434
Ortona dei Marsi AQ 18 542 76976
Magliano de' Marsi AQ 18 3690 80666
San Demetrio ne' Vestini AQ 19 1854 82520
Raiano AQ 19 2815 85335
Cocullo AQ 19 230 85565
Trasacco AQ 19 6246 91811
San Pio delle Camere AQ 19 661 92472
Vittorito AQ 19 873 93345
Sant'Eusanio Forconese AQ 19 394 93739
Ortucchio AQ 19 1860 95599
Collepietro AQ 20 237 95836

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km SE of L'Aquila (69753 inhabitants)
54 Km W of Chieti (51815 inhabitants)
60 Km S of Teramo (54892 inhabitants)
64 Km SW of Montesilvano (53738 inhabitants)
64 Km SW of Pescara (121014 inhabitants)
67 Km E of Tivoli (56533 inhabitants)
72 Km E of Guidonia Montecelio (88673 inhabitants)
83 Km NE of Velletri (53303 inhabitants)
91 Km SE of Terni (111501 inhabitants)
92 Km NE of Latina (125985 inhabitants)
95 Km E of Roma (2864731 inhabitants)
97 Km NE of Aprilia (73446 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 1.2 2020-04-18
00:34:30
42.12 13.59 10 2020-04-18
00:45:57
Sala Sismica INGV-Roma 78336381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-18 00:34:30 ± 0.09
Latitude 42.12 ± 0.00
Longitude 13.59 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 78336381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 503
Semi-minor axis of confidence ellipse (meter) 401
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 301
Circular confidence region, given by single value of horizontal uncertainty (meter) 500
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.69248
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 78336381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-18 00:45:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LRP.EHZ. 2020-04-18T00:34:48.72 3.0 undecidable manual S 0.33 0
IV.FIAM.HHZ. 2020-04-18T00:34:44.50 0.3 undecidable manual S 293 0.375 50 0.19 71
IV.GIGS.HHZ. 2020-04-18T00:34:43.22 0.6 undecidable manual S 358 0.3292 50 0.28 47
IV.VCEL.EHZ. 2020-04-18T00:34:43.90 0.3 undecidable manual S 35 0.3301 50 0.93 56
IV.MIDA.HHZ. 2020-04-18T00:34:43.62 0.1 undecidable manual P 134 0.6925 50 -0.25 88
IV.INTR.HHZ. 2020-04-18T00:34:41.20 0.3 undecidable manual S 115 0.2626 50 0.23 72
IV.SMA1.EHZ. 2020-04-18T00:34:41.36 0.1 undecidable manual P 340 0.5387 50 0.13 93
IV.VVLD.HHZ. 2020-04-18T00:34:40.98 0.1 undecidable manual S 174 0.2554 50 0.21 97
IV.TERO.HHZ. 2020-04-18T00:34:40.43 0.1 undecidable manual P 2 0.4991 50 -0.12 94
IV.FIAM.HHZ. 2020-04-18T00:34:38.27 0.3 undecidable manual P 293 0.375 50 -0.16 71
IV.T0110.HHZ. 2020-04-18T00:34:38.28 0.1 undecidable manual S 53 0.1763 116 0.29 96
IV.PTQR.HHZ. 2020-04-18T00:34:38.20 0.1 undecidable manual S 233 0.1709 117 0.42 94
IV.VCEL.EHZ. 2020-04-18T00:34:37.79 0.1 undecidable manual P 35 0.3301 50 0.13 97
IV.GIGS.HHZ. 2020-04-18T00:34:37.30 0.1 undecidable manual P 358 0.3292 50 -0.35 92
IV.INTR.HHZ. 2020-04-18T00:34:36.20 0.1 undecidable manual P 115 0.2626 50 -0.31 94
MN.AQU.HHE. 2020-04-18T00:34:36.16 0.3 undecidable manual P 330 0.2653 50 -0.4 69
IV.FAGN.HHZ. 2020-04-18T00:34:36.66 0.1 undecidable manual S 360 0.1421 121 -0.14 100
IV.VVLD.HHZ. 2020-04-18T00:34:35.90 0.1 undecidable manual P 174 0.2554 50 -0.49 91
IV.PTQR.HHZ. 2020-04-18T00:34:34.81 0.1 undecidable manual P 233 0.1709 117 0.14 99
IV.T0110.HHZ. 2020-04-18T00:34:34.64 0.3 undecidable manual P 53 0.1763 116 -0.14 75
IV.FAGN.HHZ. 2020-04-18T00:34:33.90 0.1 undecidable manual P 360 0.1421 121 -0.2 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PTQR.HHN. ML:1.1 9.98E-5 0.32 AML other m 2020-04-18T00:34:38.68
IV.PTQR.HHE. ML:1.2 0.0001078 0.52 AML other m 2020-04-18T00:34:38.62
IV.T0110.HHN. ML:1.7 0.0003645 0.62 AML other m 2020-04-18T00:34:40.77
IV.T0110.HHE. ML:1.5 0.000255 1.48 AML other m 2020-04-18T00:34:40.94
IV.VVLD.HHN. ML:1.3 9.735E-5 0.6 AML other m 2020-04-18T00:34:42.15
IV.INTR.HHE. ML:1.5 0.000145 0.58 AML other m 2020-04-18T00:34:43.57
IV.GIGS.HHN. ML:0.9 3.0E-5 0.36 AML other m 2020-04-18T00:34:43.78
IV.GIGS.HHE. ML:0.6 1.56E-5 0.66 AML other m 2020-04-18T00:34:43.33
IV.VVLD.HHE. ML:1.4 0.000141 1.54 AML other m 2020-04-18T00:34:44.94
IV.VCEL.EHN. ML:1.7 0.000176 0.38 AML other m 2020-04-18T00:34:46.01
IV.INTR.HHN. ML:1.5 0.000154 0.48 AML other m 2020-04-18T00:34:46.19
IV.VCEL.EHE. ML:1.6 0.000151 0.7 AML other m 2020-04-18T00:34:47.12
IV.LRP.EHN. ML:0.6 9.74E-6 1.12 AML other m 2020-04-18T00:34:49.29
IV.LRP.EHE. ML:1.1 2.8E-5 0.32 AML other m 2020-04-18T00:34:49.68
IV.TERO.HHE. ML:1 2.715E-5 0.68 AML other m 2020-04-18T00:34:50.52
IV.FIAM.HHE. ML:1.1 3.86E-5 0.58 AML other m 2020-04-18T00:34:51.12
IV.FIAM.HHN. ML:1 3.165E-5 0.62 AML other m 2020-04-18T00:34:51.18
IV.SMA1.EHN. ML:1.3 3.8E-5 1.5 AML other m 2020-04-18T00:34:53.01
IV.TERO.HHN. ML:1 2.6E-5 1.5 AML other m 2020-04-18T00:34:53.05
IV.SMA1.EHE. ML:1.2 3.125E-5 0.7 AML other m 2020-04-18T00:34:56.91
IV.MIDA.HHE. ML:1.3 2.94E-5 0.64 AML other m 2020-04-18T00:34:59.83
IV.MIDA.HHN. ML:1.1 2.145E-5 1.02 AML other m 2020-04-18T00:35:01.61
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