Earthquake with magnitude of ML 0.9 on date 19-09-2018 and time 01:24:53 (Italy) in region 6 km NW Accumoli (RI)

A magnitude ML 0.9 earthquake occured in region: 6 km NW Accumoli (RI), on

  • 18-09-2018 23:24:53 (UTC)
  • 19-09-2018 01:24:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.73, 13.18 at 11 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Accumoli RI 6 667 667
Norcia PG 10 4957 5624
Arquata del Tronto AP 11 1178 6802
Cittareale RI 12 482 7284
Amatrice RI 14 2657 9941
Cascia PG 14 3217 13158
Montegallo AP 18 523 13681
Castelsantangelo sul Nera MC 19 281 13962
Acquasanta Terme AP 19 2916 16878

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km W of Teramo (54892 inhabitants)
45 Km NW of L'Aquila (69753 inhabitants)
47 Km SE of Foligno (57155 inhabitants)
48 Km E of Terni (111501 inhabitants)
77 Km SE of Perugia (166134 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
89 Km W of Pescara (121014 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
91 Km NE of Tivoli (56533 inhabitants)
91 Km W of Chieti (51815 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 ML 0.9 2018-09-18
23:24:53
42.73 13.18 11 2019-06-04
09:16:02
Bollettino Sismico Italiano INGV 63446351
Rev 100 ML 0.8 2018-09-18
23:24:53
42.73 13.18 9 2018-09-18
23:28:38
Sala Sismica INGV-Roma 61083031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-18 23:24:53 ± 0.04
Latitude 42.73 ± 0.00
Longitude 13.18 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 63446351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 367
Semi-minor axis of confidence ellipse (meter) 199
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 250
Circular confidence region, given by single value of horizontal uncertainty (meter) 370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 103
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.36333
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 61083031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-18 23:28:38

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 63446351
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-05-09 09:24:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RIBO.EHZ.01 2018-09-18T23:25:44.29 3.0 undecidable manual Sn 0.95 0
IV.TOLF.HHZ. 2018-09-18T23:25:16.62 3.0 undecidable manual P 1.74 0
IV.SAMA.HHZ. 2018-09-18T23:25:14.37 3.0 positive manual P 0.27 0
IV.CSP1.EHZ. 2018-09-18T23:25:06.83 0.6 undecidable manual S 2 0.3633 50 0.16 46
IV.CESI.HHZ. 2018-09-18T23:25:06.09 0.6 undecidable manual S 323 0.3435 50 -0.01 48
IV.CAMP.HHE. 2018-09-18T23:25:03.28 0.6 undecidable manual S 139 0.2536 50 -0.15 47
IV.RM33.EHZ. 2018-09-18T23:25:02.32 0.6 undecidable manual S 174 0.2203 50 -0.13 48
IV.CSP1.EHZ. 2018-09-18T23:25:01.27 0.3 undecidable manual P 2 0.3633 50 0.21 68
IV.MC2.EHZ. 2018-09-18T23:25:01.40 0.6 undecidable manual S 1 0.1826 50 0.08 49
IV.MMO1.EHZ. 2018-09-18T23:25:01.70 0.6 undecidable manual S 31 0.1996 50 -0.13 48
IV.SMA1.EHZ. 2018-09-18T23:25:00.24 0.6 undecidable manual S 132 0.1475 123 0.02 49
IV.MF5.EHZ. 2018-09-18T23:25:00.86 0.3 undecidable manual P 38 0.3283 50 0.4 66
IV.LNSS.HHZ. 2018-09-18T23:25:00.71 0.6 undecidable manual S 220 0.1646 121 -0.06 49
IV.MTRA.EHZ. 2018-09-18T23:25:00.16 0.6 undecidable manual S 80 0.1574 122 -0.39 46
IV.CESI.HHZ. 2018-09-18T23:25:00.61 0.1 undecidable manual P 323 0.3435 50 -0.12 93
IV.T1299.HNN. 2018-09-18T23:24:59.60 0.6 undecidable manual S 143 0.1187 129 0.29 47
IV.NRCA.HHZ. 2018-09-18T23:24:58.96 0.6 undecidable manual S 334 0.1169 130 -0.3 47
IV.RM33.EHZ. 2018-09-18T23:24:58.66 0.3 undecidable manual P 174 0.2203 50 0.03 73
IV.MC2.EHZ. 2018-09-18T23:24:58.11 0.3 undecidable manual P 1 0.1826 50 0.14 72
IV.MMO1.EHZ. 2018-09-18T23:24:58.14 0.1 undecidable manual P 31 0.1996 50 -0.13 96
IV.CAMP.HHE. 2018-09-18T23:24:58.98 0.1 undecidable manual P 139 0.2536 50 -0.21 93
IV.T1299.HNN. 2018-09-18T23:24:57.08 0.1 undecidable manual P 143 0.1187 129 0.27 95
IV.SMA1.EHZ. 2018-09-18T23:24:57.38 0.1 undecidable manual P 132 0.1475 123 0.05 98
IV.LNSS.HHZ. 2018-09-18T23:24:57.63 0.1 undecidable manual P 220 0.1646 121 -0.02 99
IV.MTRA.EHZ. 2018-09-18T23:24:57.44 0.1 undecidable manual P 80 0.1574 122 -0.09 98
IV.NRCA.HHZ. 2018-09-18T23:24:56.78 0.1 undecidable manual P 334 0.1169 130 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.6 0.000386 0.3 AML other m 2018-09-18T23:24:59.15
IV.NRCA.HHN. ML:1.6 0.0003775 0.06 AML other m 2018-09-18T23:24:59.00
IV.MTRA.EHE. ML:1 8.635E-5 0.28 AML other m 2018-09-18T23:25:00.47
IV.MTRA.EHN. ML:1 8.53E-5 0.72 AML other m 2018-09-18T23:25:00.71
IV.SMA1.EHE. ML:0.7 4.675E-5 1.58 AML other m 2018-09-18T23:25:00.84
IV.SMA1.EHN. ML:0.6 3.635E-5 0.12 AML other m 2018-09-18T23:25:01.20
IV.RM33.EHN. ML:0.6 2.51E-5 1.1 AML other m 2018-09-18T23:25:02.17
IV.RM33.EHE. ML:0.6 2.605E-5 0.12 AML other m 2018-09-18T23:25:02.94
OB.GAVE.EHN. ML:0 4.445E-5 1.76 AML other m 2018-09-18T23:25:02.90
OB.GAVE.EHE. ML:0 3.12E-5 1.38 AML other m 2018-09-18T23:25:03.90
IV.TERO.HHN. ML:0 2.855E-5 0.06 AML other m 2018-09-18T23:25:05.75
IV.TERO.HHE. ML:0 2.135E-5 1.56 AML other m 2018-09-18T23:25:06.78
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