Earthquake with magnitude of ML 1.6 on date 18-09-2020 and time 19:35:24 (Italy) in region 2 km N Fontecchio (AQ)

A magnitude ML 1.6 earthquake occured in region: 2 km N Fontecchio (AQ), on

  • 18-09-2020 17:35:24 (UTC)
  • 18-09-2020 19:35:24 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.25, 13.61 at 9 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
Fontecchio AQ 2 369 369
Fagnano Alto AQ 3 418 787
Prata d'Ansidonia AQ 3 496 1283
Caporciano AQ 5 230 1513
Tione degli Abruzzi AQ 5 310 1823
San Pio delle Camere AQ 6 661 2484
San Demetrio ne' Vestini AQ 6 1854 4338
Villa Sant'Angelo AQ 6 424 4762
Sant'Eusanio Forconese AQ 8 394 5156
Carapelle Calvisio AQ 8 87 5243
Rocca di Mezzo AQ 9 1526 6769
Barisciano AQ 9 1828 8597
Castelvecchio Calvisio AQ 10 153 8750
Poggio Picenze AQ 10 1136 9886
Rocca di Cambio AQ 10 533 10419
Navelli AQ 10 554 10973
Santo Stefano di Sessanio AQ 11 111 11084
Fossa AQ 11 721 11805
Calascio AQ 11 137 11942
Ocre AQ 12 1167 13109
Acciano AQ 12 327 13436
Secinaro AQ 12 359 13795
Capestrano AQ 13 884 14679
Collepietro AQ 15 237 14916
Ovindoli AQ 15 1227 16143
San Benedetto in Perillis AQ 15 113 16256
Molina Aterno AQ 15 386 16642
Ofena AQ 15 506 17148
Gagliano Aterno AQ 16 254 17402
Castel del Monte AQ 16 413 17815
Castelvecchio Subequo AQ 16 982 18797
Villa Santa Lucia degli Abruzzi AQ 17 123 18920
Bussi sul Tirino PE 19 2518 21438
Castel di Ieri AQ 19 303 21741
Aielli AQ 19 1475 23216
Celano AQ 19 11017 34233

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km SE of L'Aquila (69753 inhabitants)
46 Km S of Teramo (54892 inhabitants)
47 Km W of Chieti (51815 inhabitants)
53 Km SW of Montesilvano (53738 inhabitants)
55 Km W of Pescara (121014 inhabitants)
74 Km E of Tivoli (56533 inhabitants)
78 Km E of Guidonia Montecelio (88673 inhabitants)
86 Km E of Terni (111501 inhabitants)
93 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
Reviewed
Rev100
ML 1.6 2020-09-18
17:35:24
42.25 13.61 9 2020-09-18
17:53:46
Sala Sismica INGV-Roma 83010811
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-18 17:35:24 ± 0.07
Latitude 42.25 ± 0.01
Longitude 13.61 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83010811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 532
Semi-minor axis of confidence ellipse (meter) 433
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 27
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) 59
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.68798
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 83010811
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-18 17:53:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ZONE.HHZ. 2020-09-18T17:37:40.87 3.0 undecidable manual Sg 18.84 0
IV.MTGR.HHZ. 2020-09-18T17:37:36.93 3.0 undecidable manual Sg 12.93 0
GU.CANO.HHZ. 2020-09-18T17:37:30.39 3.0 undecidable manual Sn 6.32 0
IV.EUCT.HNZ. 2020-09-18T17:37:28.19 3.0 undecidable manual Sn 4.4 0
IV.IMI.HHZ. 2020-09-18T17:37:27.88 3.0 undecidable manual Sn 0.85 0
IV.MBAL.EHZ. 2020-09-18T17:37:23.08 3.0 undecidable manual Sg 9.6 0
IV.MAGA.HHZ. 2020-09-18T17:37:15.04 3.0 undecidable manual Sn -2.16 0
IV.JOPP.HHZ. 2020-09-18T17:37:11.26 3.0 undecidable manual Sn -3.09 0
IV.CAGR.HHZ. 2020-09-18T17:36:37.56 3.0 undecidable manual Pn 2.12 0
IV.SARZ.HHZ. 2020-09-18T17:36:36.49 3.0 positive manual Pn 5.84 0
IV.RIBO.EHZ.01 2020-09-18T17:36:32.48 3.0 undecidable manual Sg 6.24 0
IV.FIR.HHZ. 2020-09-18T17:36:29.92 3.0 undecidable manual Sn -3 0
IV.MBAL.EHZ. 2020-09-18T17:36:26.42 3.0 negative manual Pn 0.44 0
IV.OPPE.HHZ. 2020-09-18T17:36:25.87 3.0 undecidable manual Pg 6.03 0
IV.APEC.HHZ. 2020-09-18T17:36:11.88 3.0 undecidable manual S -2.95 0
IV.MPPT.EHZ. 2020-09-18T17:36:09.66 3.0 undecidable manual Pg 3.59 0
IV.ARVD.HHZ. 2020-09-18T17:36:06.40 3.0 undecidable manual S -2.54 0
IV.TOLF.HHZ. 2020-09-18T17:36:04.01 3.0 undecidable manual S -2.74 0
IV.RIBO.EHZ.01 2020-09-18T17:36:03.35 3.0 positive manual Pg 3.91 0
IV.IFOR.HHZ. 2020-09-18T17:35:53.52 3.0 negative manual P 0.94 0
IV.COR1.EHZ. 2020-09-18T17:35:49.71 3.0 undecidable manual P -1.49 0
IV.MMO1.EHZ. 2020-09-18T17:35:48.73 3.0 undecidable manual S -1.06 0
IV.CSP1.EHZ. 2020-09-18T17:35:41.52 3.0 positive manual P -1.37 0
IV.LPEL.HHZ. 2020-09-18T17:35:41.05 0.6 undecidable manual S 115 0.4712 50 -0.1 48
IV.VVLD.HHZ. 2020-09-18T17:35:38.63 0.6 undecidable manual S 178 0.3795 50 0.2 48
IV.FIAM.HHZ. 2020-09-18T17:35:37.82 0.6 undecidable manual S 273 0.3642 50 -0.14 48
IV.NRCA.HHZ. 2020-09-18T17:35:37.50 0.1 undecidable manual P 328 0.688 50 -0.2 90
IV.INTR.HHZ. 2020-09-18T17:35:36.56 0.6 undecidable manual S 137 0.3238 50 -0.21 48
IV.PTQR.HHZ. 2020-09-18T17:35:35.57 0.6 undecidable manual S 214 0.2743 106 0.35 47
IV.LPEL.HHZ. 2020-09-18T17:35:34.00 0.1 undecidable manual P 115 0.4712 50 0 98
IV.VCEL.EHZ. 2020-09-18T17:35:33.61 0.6 undecidable manual S 50 0.2248 109 0.2 49
MN.AQU.HHE. 2020-09-18T17:35:32.57 0.6 undecidable manual S 305 0.1835 113 0.65 44
IV.SMA1.EHZ. 2020-09-18T17:35:32.88 0.1 undecidable manual P 332 0.4308 50 -0.43 90
IV.GIGS.HHE. 2020-09-18T17:35:32.42 0.6 undecidable manual S 353 0.2059 111 -0.29 48
IV.VVLD.HHZ. 2020-09-18T17:35:32.33 0.1 undecidable manual P 178 0.3795 50 -0.09 98
IV.CAMP.HHE. 2020-09-18T17:35:32.01 0.1 undecidable manual P 333 0.322 50 0.57 88
IV.INTR.HHZ. 2020-09-18T17:35:31.45 0.6 undecidable manual P 137 0.3238 50 -0.01 50
IV.FIAM.HHZ. 2020-09-18T17:35:31.94 0.1 undecidable manual P 273 0.3642 50 -0.22 96
IV.PTQR.HHZ. 2020-09-18T17:35:30.49 1.0 undecidable manual P 214 0.2743 106 -0.09 25
IV.VCEL.EHZ. 2020-09-18T17:35:29.83 0.1 undecidable manual P 50 0.2248 109 0.3 96
IV.T0110.HHZ. 2020-09-18T17:35:29.81 0.6 undecidable manual S 99 0.1259 122 -0.14 51
MN.AQU.HHE. 2020-09-18T17:35:29.06 0.1 undecidable manual P 305 0.1835 113 0.39 95
IV.GIGS.HHE. 2020-09-18T17:35:28.98 0.1 undecidable manual P 353 0.2059 111 -0.14 100
IV.T0110.HHZ. 2020-09-18T17:35:27.75 0.1 undecidable manual P 99 0.1259 122 0.22 100
IV.FAGN.HHZ. 2020-09-18T17:35:26.72 0.3 undecidable manual S 312 0.0243 163 -0.7 66
IV.FAGN.HHZ. 2020-09-18T17:35:25.90 0.6 undecidable manual P 312 0.0243 163 -0.17 51
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FAGN.HHN. ML:0 0.010125338 0.2816 AML other m 2020-09-18T17:35:27.60
IV.FAGN.HHE. ML:0 0.0133293625 0.256 AML other m 2020-09-18T17:35:26.91
IV.VCEL.EHE. ML:0 0.00086964745 0.2432 AML other m 2020-09-18T17:35:34.57
IV.VCEL.EHN. ML:0 0.00068830145 0.2304 AML other m 2020-09-18T17:35:36.09
IV.T0110.HHE. ML:2.1 0.0013228135 0.3456 AML other m 2020-09-18T17:35:32.80
IV.T0110.HHN. ML:2.1 0.001374529 0.2432 AML other m 2020-09-18T17:35:30.91
IV.PTQR.HHE. ML:1.4 0.000113826 0.2816 AML other m 2020-09-18T17:35:38.46
IV.PTQR.HHN. ML:1.3 8.9609945E-5 0.2176 AML other m 2020-09-18T17:35:36.45
IV.INTR.HNE. ML:1.7 0.0002095187 0.576 AML other m 2020-09-18T17:35:41.99
IV.INTR.HNN. ML:1.6 0.0001749328 0.3712 AML other m 2020-09-18T17:35:42.07
IV.INTR.HHE. ML:1.5 0.0001282401 0.3712 AML other m 2020-09-18T17:35:40.36
IV.FIAM.HHE. ML:1.3 6.328785E-5 0.6016 AML other m 2020-09-18T17:35:46.64
IV.FIAM.HHN. ML:1.2 6.234118E-5 0.4224 AML other m 2020-09-18T17:35:46.47
IV.VVLD.HHE. ML:1.2 4.9063155E-5 0.3584 AML other m 2020-09-18T17:35:44.09
IV.VVLD.HHN. ML:1.4 7.3166765E-5 0.5376 AML other m 2020-09-18T17:35:45.45
IV.VVLD.HNE. ML:1.7 0.0001486069 0.6272 AML other m 2020-09-18T17:35:40.14
IV.VVLD.HNN. ML:1.6 0.0001353618 0.4864 AML other m 2020-09-18T17:35:43.71
IV.SMA1.EHE. ML:1.5 9.6380125E-5 0.5632 AML other m 2020-09-18T17:35:45.27
IV.SMA1.EHN. ML:1.6 0.0001213268 0.4608 AML other m 2020-09-18T17:35:46.82
IV.LPEL.HHE. ML:1.7 0.0001180237 0.32 AML other m 2020-09-18T17:35:44.26
IV.LPEL.HHN. ML:1.6 0.00010530467 0.192 AML other m 2020-09-18T17:35:43.03
IV.LPEL.HNE. ML:1.8 0.00017236005 0.7424 AML other m 2020-09-18T17:35:46.96
IV.NRCA.HHE. ML:1.6 5.4011675E-5 0.1536 AML other m 2020-09-18T17:35:50.28
IV.NRCA.HHN. ML:1.4 4.0188225E-5 0.1152 AML other m 2020-09-18T17:35:51.27
IV.MPPT.EHE. ML:2.6 5.61824E-5 0.3072 AML other m 2020-09-18T17:36:10.96
IV.SARZ.HHE. ML:3.2 6.2092745E-5 0.1792 AML other m 2020-09-18T17:36:38.43
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