Earthquake with magnitude of ML 1.9 on date 18-06-2021 and time 04:30:58 (Italy) in region 4 km SW Cerchio (AQ)

A magnitude ML 1.9 earthquake occured in region: 4 km SW Cerchio (AQ), on

  • 18-06-2021 02:30:58 (UTC)
  • 18-06-2021 04:30:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.03, 13.586 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
Cerchio AQ 4 1635 1635
San Benedetto dei Marsi AQ 4 3909 5544
Collarmele AQ 5 894 6438
Aielli AQ 6 1475 7913
Pescina AQ 6 4133 12046
Celano AQ 7 11017 23063
Trasacco AQ 9 6246 29309
Ortucchio AQ 10 1860 31169
Gioia dei Marsi AQ 12 1989 33158
Luco dei Marsi AQ 12 6079 39237
Ortona dei Marsi AQ 12 542 39779
Ovindoli AQ 13 1227 41006
Avezzano AQ 13 42515 83521
Lecce nei Marsi AQ 14 1702 85223
Gagliano Aterno AQ 14 254 85477
Cocullo AQ 16 230 85707
Secinaro AQ 16 359 86066
Castel di Ieri AQ 16 303 86369
Collelongo AQ 16 1233 87602
Castelvecchio Subequo AQ 16 982 88584
Goriano Sicoli AQ 17 569 89153
Canistro AQ 17 995 90148
Capistrello AQ 18 5252 95400
Molina Aterno AQ 18 386 95786
Massa d'Albe AQ 18 1476 97262
Civitella Roveto AQ 18 3268 100530
Villavallelonga AQ 18 919 101449
Anversa degli Abruzzi AQ 18 341 101790
Civita d'Antino AQ 19 979 102769
Bisegna AQ 19 223 102992
Magliano de' Marsi AQ 20 3690 106682
Acciano AQ 20 327 107009
Tione degli Abruzzi AQ 20 310 107319

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km SE of L'Aquila (69753 inhabitants)
60 Km SW of Chieti (51815 inhabitants)
65 Km E of Tivoli (56533 inhabitants)
71 Km S of Teramo (54892 inhabitants)
71 Km SW of Pescara (121014 inhabitants)
71 Km E of Guidonia Montecelio (88673 inhabitants)
71 Km SW of Montesilvano (53738 inhabitants)
77 Km NE of Velletri (53303 inhabitants)
84 Km NE of Latina (125985 inhabitants)
92 Km NE of Aprilia (73446 inhabitants)
92 Km E of Roma (2864731 inhabitants)
97 Km SE of Terni (111501 inhabitants)
98 Km E of Pomezia (62966 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 1.9 2021-06-18
02:30:58
42.0305 13.5862 11 2021-06-18
02:36:47
Sala Sismica INGV-Roma 91474731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-18 02:30:58 ± 0.08
Latitude 42.0305 ± 0.0036
Longitude 13.5862 ± 0.0073
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 91474731

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 532
Semi-minor axis of confidence ellipse (meter) 388
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 255
Circular confidence region, given by single value of horizontal uncertainty (meter) 530
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.55128
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 36
Type of magnitude ML
Reference to an origin 91474731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-06-18 02:36:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
OT.OT13.EHZ. 2021-06-18T02:31:36.39 3.0 negative manual Pg 6.45 0
IV.TERO.HNZ. 2021-06-18T02:31:20.61 3.0 undecidable manual S 0.66 0
IV.CERA.HHZ. 2021-06-18T02:31:17.89 0.3 undecidable manual S 143 0.5387 50 0.37 66
IV.VCEL.EHZ. 2021-06-18T02:31:14.01 0.6 undecidable manual S 27 0.4101 50 0.32 45
IV.POFI.HHZ. 2021-06-18T02:31:11.08 0.6 undecidable manual S 163 0.3265 50 -0.15 48
IV.SMA1.EHZ. 2021-06-18T02:31:11.27 3.0 positive manual P 0.15 0
IV.MCI.EHZ. 2021-06-18T02:31:10.25 3.0 positive manual P 0.06 0
IV.GUAR.HHZ. 2021-06-18T02:31:10.93 0.6 undecidable manual S 221 0.3112 50 0.14 48
IV.TERO.HHZ. 2021-06-18T02:31:10.23 3.0 undecidable manual P -0.25 0
IV.GIUL.HHZ. 2021-06-18T02:31:09.58 3.0 positive manual P 0.03 0
IV.RM33.EHZ. 2021-06-18T02:31:09.38 0.6 negative manual P 330 0.5513 50 -0.52 42
IV.T0110.HHZ. 2021-06-18T02:31:09.29 0.6 undecidable manual S 35 0.2437 50 0.52 45
IV.CERA.HHZ. 2021-06-18T02:31:09.46 0.1 undecidable manual P 143 0.5387 50 -0.23 90
IV.LPEL.HHZ. 2021-06-18T02:31:08.13 3.0 negative manual P 0.14 0
IV.FAGN.HHZ. 2021-06-18T02:31:08.66 0.6 undecidable manual S 360 0.2347 50 0.14 49
IV.INTR.HHZ. 2021-06-18T02:31:08.70 0.6 undecidable manual S 94 0.2374 50 0.12 49
IV.CERT.HHZ. 2021-06-18T02:31:08.51 3.0 positive manual P 0.41 0
IV.VCEL.EHZ. 2021-06-18T02:31:07.42 1.0 undecidable manual P 27 0.4101 50 -0.06 24
IV.VVLD.HHZ. 2021-06-18T02:31:06.10 0.6 undecidable manual S 170 0.1628 120 -0.17 49
IV.POFI.HHZ. 2021-06-18T02:31:05.87 0.1 positive manual P 163 0.3265 50 -0.19 95
IV.GUAR.HHZ. 2021-06-18T02:31:05.92 0.3 undecidable manual P 221 0.3112 50 0.12 72
IV.PTQR.HHZ. 2021-06-18T02:31:05.75 0.6 undecidable manual S 267 0.1376 125 0.3 48
IV.INTR.HHZ. 2021-06-18T02:31:04.53 0.1 undecidable manual P 94 0.2374 50 0 100
IV.FAGN.HHZ. 2021-06-18T02:31:04.10 0.1 undecidable manual P 360 0.2347 50 -0.39 92
IV.T0110.HHZ. 2021-06-18T02:31:04.52 0.1 positive manual P 35 0.2437 50 -0.12 98
IV.VVLD.HHZ. 2021-06-18T02:31:03.29 0.1 positive manual P 170 0.1628 120 0.1 100
IV.PTQR.HHZ. 2021-06-18T02:31:02.87 0.3 negative manual P 267 0.1376 125 0.15 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PTQR.HHE. ML:1.7 0.000468 0.18 AML other m 2021-06-18T02:31:06.26
IV.PTQR.HHN. ML:1.8 0.00062 0.42 AML other m 2021-06-18T02:31:06.26
IV.VVLD.HHE. ML:2.2 0.001155 0.24 AML other m 2021-06-18T02:31:06.41
IV.VVLD.HNE. ML:2.1 0.001095 0.22 AML other m 2021-06-18T02:31:06.42
IV.VVLD.HHN. ML:2.1 0.000953 0.48 AML other m 2021-06-18T02:31:06.75
IV.VVLD.HNN. ML:2 0.0008795 1.5 AML other m 2021-06-18T02:31:07.75
IV.INTR.HHE. ML:2 0.0005335 1.52 AML other m 2021-06-18T02:31:09.87
IV.INTR.HNE. ML:2 0.0005125 1.52 AML other m 2021-06-18T02:31:09.87
IV.INTR.HHN. ML:2.1 0.000653 0.38 AML other m 2021-06-18T02:31:09.24
IV.INTR.HNN. ML:2.1 0.0006815 0.38 AML other m 2021-06-18T02:31:09.24
IV.T0110.HHN. ML:2.5 0.001795 0.38 AML other m 2021-06-18T02:31:09.74
IV.T0110.HHE. ML:2.6 0.002185 0.3 AML other m 2021-06-18T02:31:09.71
IV.FAGN.HHE. ML:2.3 0.00122 0.9 AML other m 2021-06-18T02:31:11.45
IV.GUAR.HHE. ML:2 0.000416 1.28 AML other m 2021-06-18T02:31:11.35
IV.FAGN.HHN. ML:2.4 0.00127 0.5 AML other m 2021-06-18T02:31:11.61
IV.GUAR.HHN. ML:2 0.000364 0.26 AML other m 2021-06-18T02:31:11.72
IV.POFI.HHN. ML:1.6 0.0001405 0.16 AML other m 2021-06-18T02:31:12.36
IV.POFI.HHE. ML:1.6 0.0001555 0.32 AML other m 2021-06-18T02:31:12.51
IV.VCEL.EHE. ML:2.3 0.000613 1.74 AML other m 2021-06-18T02:31:16.10
IV.LPEL.HHE. ML:1.8 0.000159 0.52 AML other m 2021-06-18T02:31:17.61
IV.LPEL.HHN. ML:1.8 0.000163 0.44 AML other m 2021-06-18T02:31:17.40
IV.CERT.HHN. ML:1.5 8.26E-5 1.62 AML other m 2021-06-18T02:31:17.92
IV.VCEL.EHN. ML:2.1 0.000341 0.24 AML other m 2021-06-18T02:31:18.44
IV.MCI.EHE. ML:2.3 0.000387 0.54 AML other m 2021-06-18T02:31:20.39
IV.MCI.EHN. ML:2.2 0.0002975 1.06 AML other m 2021-06-18T02:31:21.67
IV.CERA.HHE. ML:1.7 9.49E-5 0.34 AML other m 2021-06-18T02:31:21.43
IV.GIUL.HHN. ML:1.6 9.025E-5 0.66 AML other m 2021-06-18T02:31:21.29
IV.TERO.HHE. ML:1.8 0.0001065 0.82 AML other m 2021-06-18T02:31:22.45
IV.GIUL.HHE. ML:1.5 7.17E-5 0.54 AML other m 2021-06-18T02:31:22.57
IV.RM33.EHN. ML:1.7 9.65E-5 1.32 AML other m 2021-06-18T02:31:22.21
IV.RM33.EHE. ML:1.7 0.000107 0.36 AML other m 2021-06-18T02:31:23.43
IV.CERT.HHE. ML:1.5 8.125E-5 0.32 AML other m 2021-06-18T02:31:24.51
IV.SMA1.EHE. ML:1.6 7.085E-5 0.8 AML other m 2021-06-18T02:31:28.76
IV.CERA.HHN. ML:1.8 0.000124 0.58 AML other m 2021-06-18T02:31:28.68
IV.TERO.HHN. ML:1.7 8.295E-5 0.72 AML other m 2021-06-18T02:31:30.55
IV.SMA1.EHN. ML:1.6 7.39E-5 0.44 AML other m 2021-06-18T02:31:30.22
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