Earthquake with magnitude of ML 1.7 on date 27-09-2021 and time 13:47:14 (Italy) in region 3 km W Ortona dei Marsi (AQ)

A magnitude ML 1.7 earthquake occured in region: 3 km W Ortona dei Marsi (AQ), on

  • 27-09-2021 11:47:14 (UTC)
  • 27-09-2021 13:47:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.992, 13.696 at 8 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
Ortona dei Marsi AQ 3 542 542
Gioia dei Marsi AQ 4 1989 2531
Pescina AQ 5 4133 6664
Ortucchio AQ 6 1860 8524
San Benedetto dei Marsi AQ 6 3909 12433
Lecce nei Marsi AQ 7 1702 14135
Cocullo AQ 8 230 14365
Anversa degli Abruzzi AQ 9 341 14706
Bisegna AQ 9 223 14929
Collarmele AQ 10 894 15823
Cerchio AQ 11 1635 17458
Goriano Sicoli AQ 12 569 18027
Villalago AQ 13 568 18595
Aielli AQ 13 1475 20070
Trasacco AQ 13 6246 26316
Prezza AQ 14 945 27261
Bugnara AQ 14 1125 28386
Castel di Ieri AQ 14 303 28689
Collelongo AQ 15 1233 29922
Villavallelonga AQ 15 919 30841
Gagliano Aterno AQ 15 254 31095
Raiano AQ 16 2815 33910
Castelvecchio Subequo AQ 16 982 34892
Celano AQ 16 11017 45909
Introdacqua AQ 17 2126 48035
Molina Aterno AQ 18 386 48421
Secinaro AQ 18 359 48780
Vittorito AQ 18 873 49653
Scanno AQ 18 1847 51500
Pratola Peligna AQ 19 7577 59077
Luco dei Marsi AQ 19 6079 65156
Corfinio AQ 19 1051 66207

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km SE of L'Aquila (69753 inhabitants)
56 Km SW of Chieti (51815 inhabitants)
68 Km SW of Pescara (121014 inhabitants)
69 Km SW of Montesilvano (53738 inhabitants)
74 Km E of Tivoli (56533 inhabitants)
74 Km S of Teramo (54892 inhabitants)
80 Km E of Guidonia Montecelio (88673 inhabitants)
83 Km E of Velletri (53303 inhabitants)
88 Km NE of Latina (125985 inhabitants)
97 Km E of Aprilia (73446 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 1.7 2021-09-27
11:47:14
41.9918 13.6958 9 2021-09-27
12:26:55
Sala Sismica INGV-Roma 95947021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-27 11:47:14 ± 0.12
Latitude 41.9918 ± 0.0063
Longitude 13.6958 ± 0.0085
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 95947021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 695
Semi-minor axis of confidence ellipse (meter) 418
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 312
Circular confidence region, given by single value of horizontal uncertainty (meter) 690
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 74
Number of associated phases, regardless of their use for origin computation 48
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.41639
Number of stations at which the event was observed 41
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 95947021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-27 12:26:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TREG.EHZ. 2021-09-27T11:49:00.65 3.0 undecidable manual Sg 11.12 0
AC.VLO.HHZ. 2021-09-27T11:48:54.86 3.0 undecidable manual Sn -9.99 0
MN.PDG.HHZ. 2021-09-27T11:48:52.22 3.0 undecidable manual Sn -0.87 0
IV.MBAL.EHZ. 2021-09-27T11:48:52.14 3.0 undecidable manual Sn -3.72 0
IV.MARS.HNZ. 2021-09-27T11:48:50.36 3.0 undecidable manual Sn -9.99 0
IV.ZEN8.EHZ. 2021-09-27T11:48:50.98 3.0 undecidable manual Sn -4.83 0
IV.SERS.HHZ. 2021-09-27T11:48:42.07 3.0 undecidable manual Sn -4.18 0
IV.SBPO.HNZ. 2021-09-27T11:48:41.20 3.0 undecidable manual Sn -1.01 0
AC.SRN.HHZ. 2021-09-27T11:48:33.50 3.0 undecidable manual Pg 11.22 0
TV.SU26.HHZ. 2021-09-27T11:48:31.35 3.0 undecidable manual Pg 11.15 0
GU.PCP.HHZ. 2021-09-27T11:48:27.47 3.0 undecidable manual Pg 14.02 0
IV.BRIS.HHZ. 2021-09-27T11:48:27.55 3.0 undecidable manual Sg 10.28 0
IV.HVIT.HHZ. 2021-09-27T11:48:17.31 3.0 undecidable manual Pn -4.35 0
IV.ACATE.EHZ. 2021-09-27T11:48:15.04 3.0 negative manual Pn -6.17 0
SL.LJU.BHZ. 2021-09-27T11:48:11.77 3.0 positive manual Pg 6.39 0
IV.ZEN8.EHZ. 2021-09-27T11:48:11.93 3.0 undecidable manual Pg 3.7 0
IV.MNTV.EHZ. 2021-09-27T11:48:09.77 3.0 undecidable manual Pg 7.34 0
IV.MRVN.HHZ. 2021-09-27T11:48:09.45 3.0 undecidable manual Sg 4.74 0
IX.SCL3.EHZ.02 2021-09-27T11:48:05.07 3.0 undecidable manual Sg 4.4 0
IV.MTGR.HHZ. 2021-09-27T11:48:04.04 3.0 positive manual Pn -5.94 0
IV.CAFI.HNZ. 2021-09-27T11:48:03.68 3.0 undecidable manual Sg 5.06 0
IV.SENA.HHZ. 2021-09-27T11:47:56.68 3.0 undecidable manual Pn -4.96 0
IV.ARVD.HHZ. 2021-09-27T11:47:55.59 3.0 undecidable manual Sg 4.32 0
IV.GRI.EHZ. 2021-09-27T11:47:51.23 3.0 positive manual Pn -9.99 0
IV.TOLF.HHZ. 2021-09-27T11:47:33.22 3.0 undecidable manual Pg 3.61 0
OT.OT17.EHZ. 2021-09-27T11:47:30.63 3.0 negative manual Pg 2.61 0
IV.LPEL.HNZ. 2021-09-27T11:47:28.00 0.6 undecidable manual S 81 0.366 50 -0.21 48
IT.AVL.HNZ. 2021-09-27T11:47:27.56 3.0 undecidable manual Pg -2.67 0
IV.PP3.EHZ. 2021-09-27T11:47:26.00 3.0 positive manual Pg -2.49 0
IV.POFI.HHZ. 2021-09-27T11:47:25.02 0.6 undecidable manual S 100
IT.OPI.HGN. 2021-09-27T11:47:24.40 0.3 undecidable manual S 155 0.2374 108 0.44 67
IV.T0110.HHZ. 2021-09-27T11:47:24.63 0.3 undecidable manual S 14 0.2446 107 0.4 70
IV.PTQR.HHZ. 2021-09-27T11:47:23.44 0.3 undecidable manual S 278 0.2212 109 0.08 74
IV.VCEL.EHZ. 2021-09-27T11:47:22.90 0.1 undecidable manual P 15 0.4164 50 -0.31 92
IV.LPEL.HNZ. 2021-09-27T11:47:22.23 0.1 undecidable manual P 81 0.366 50 -0.12 96
IV.INTR.HHZ. 2021-09-27T11:47:21.02 0.3 undecidable manual S 83 0.1565 116 -0.03 73
IV.FAGN.HHZ. 2021-09-27T11:47:21.60 0.1 undecidable manual P 343 0.286 105 0.67 80
IV.VVLD.HHZ. 2021-09-27T11:47:20.02 0.6 undecidable manual S 204 0.1331 120 -0.25 47
IT.OPI.HGN. 2021-09-27T11:47:20.43 0.1 undecidable manual P 155 0.2374 108 0.54 87
IV.RMP.HHZ. 2021-09-27T11:47:19.98 3.0 undecidable manual P -3.19 0
IV.T0110.HHZ. 2021-09-27T11:47:19.84 0.1 undecidable manual P 14 0.2446 107 -0.21 93
IV.PTQR.HHZ. 2021-09-27T11:47:19.55 0.1 undecidable manual P 278 0.2212 109 0 99
IT.SULP.HGZ. 2021-09-27T11:47:18.67 0.1 undecidable manual P 61 0.1952 111 -0.34 92
IV.INTR.HHZ. 2021-09-27T11:47:18.25 0.1 undecidable manual P 83 0.1565 116 0.04 100
IT.PLTA.HNZ. 2021-09-27T11:47:17.82 3.0 undecidable manual Pg -3.68 0
IV.VVLD.HHZ. 2021-09-27T11:47:17.13 0.1 undecidable manual P 204 0.1331 120 -0.64 86
IV.LAV9.HHZ. 2021-09-27T11:47:16.26 3.0 undecidable manual Pn -7.72 0
IV.OFFI.HHZ. 2021-09-27T11:47:15.05 3.0 positive manual Pn -7.32 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HHE. ML:1.6 0.000413 0.46 AML other m 2021-09-27T11:47:20.25
IV.VVLD.HHN. ML:1.7 0.000461 0.42 AML other m 2021-09-27T11:47:20.03
IV.VVLD.HNN. ML:1.7 0.0004595 1.56 AML other m 2021-09-27T11:47:20.04
IV.VVLD.HNE. ML:1.6 0.000423 0.7 AML other m 2021-09-27T11:47:20.61
IV.INTR.HHE. ML:1.6 0.0003945 0.2 AML other m 2021-09-27T11:47:21.48
IV.INTR.HHN. ML:2 0.000825 1.26 AML other m 2021-09-27T11:47:21.92
IV.PTQR.HHN. ML:1.1 7.12E-5 0.86 AML other m 2021-09-27T11:47:23.36
IV.PTQR.HHE. ML:1.2 0.00011135 1.62 AML other m 2021-09-27T11:47:25.02
IV.T0110.HHE. ML:1.6 0.000212 0.62 AML other m 2021-09-27T11:47:25.43
IV.T0110.HHN. ML:1.6 0.0001955 0.32 AML other m 2021-09-27T11:47:26.49
IV.RMP.HHE. ML:2.8 0.0008835 0.36 AML other m 2021-09-27T11:47:48.57
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