INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.8 on date 15-09-2018 and time 02:11:59 (Italy) in region 4 km E Norcia (PG)

A magnitude ML 0.8 earthquake occured in region: 4 km E Norcia (PG), on

  • 15-09-2018 00:11:59 (UTC)
  • 15-09-2018 02:11:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.79, 13.15 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
Norcia PG 4 4957 4957
Castelsantangelo sul Nera MC 11 281 5238
Arquata del Tronto AP 13 1178 6416
Preci PG 13 724 7140
Cascia PG 14 3217 10357
Accumoli RI 14 667 11024
Visso MC 16 1107 12131
Montegallo AP 16 523 12654
Ussita MC 17 444 13098
Montemonaco AP 19 604 13702
Cerreto di Spoleto PG 19 1075 14777
Poggiodomo PG 20 117 14894
Cittareale RI 20 482 15376

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Foligno (57155 inhabitants)
48 Km W of Teramo (54892 inhabitants)
48 Km NE of Terni (111501 inhabitants)
53 Km NW of L'Aquila (69753 inhabitants)
71 Km SE of Perugia (166134 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km W of Pescara (121014 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
97 Km NE of Tivoli (56533 inhabitants)
97 Km NW of Chieti (51815 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 100 ML 0.8 2018-09-15
00:11:59
42.79 13.15 9 2018-09-15
06:57:39
Sala Sismica INGV-Roma 60976981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-15 00:11:59 ± 0.06
Latitude 42.79 ± 0.00
Longitude 13.15 ± 0.00
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 60976981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 319
Semi-minor axis of confidence ellipse (meter) 171
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 99
Circular confidence region, given by single value of horizontal uncertainty (meter) 320
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.04676
Epicentral distance of station farthest from the epicenter (degree) 0.30217
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 60976981
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-15 06:57:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GUMA.HHZ. 2018-09-15T00:12:11.46 0.3 undecidable manual S 27 0.3022 50 0.35 69
IV.MF5.EHZ. 2018-09-15T00:12:11.38 0.3 undecidable manual S 50 0.3004 50 0.33 69
IV.CESI.HHZ. 2018-09-15T00:12:10.06 0.3 undecidable manual S 320 0.2761 50 -0.28 70
IV.SMA1.EHZ. 2018-09-15T00:12:08.36 0.3 undecidable manual S 140 0.2131 111 0.29 71
IV.FDMO.HHZ. 2018-09-15T00:12:08.91 0.6 undecidable manual S 350 0.2464 108 -0.37 46
OB.GAVE.EHZ. 2018-09-15T00:12:08.30 0.3 undecidable manual S 242 0.2113 111 0.3 71
IV.LNSS.HHZ. 2018-09-15T00:12:07.71 0.6 undecidable manual S 202 0.2059 112 -0.09 50
IV.FEMA.HNZ. 2018-09-15T00:12:07.10 0.6 undecidable manual S 337 0.1835 114 0.12 49
IV.MTRA.EHZ. 2018-09-15T00:12:06.79 0.3 undecidable manual S 101 0.1862 114 -0.31 71
IV.GUMA.HHZ. 2018-09-15T00:12:06.12 0.3 undecidable manual P 27 0.3022 50 0.02 74
IV.MF5.EHZ. 2018-09-15T00:12:06.05 0.3 undecidable manual P 50 0.3004 50 -0.02 74
IV.MMO1.EHZ. 2018-09-15T00:12:06.36 0.3 undecidable manual S 51 0.1691 116 -0.12 74
IV.CESI.HHZ. 2018-09-15T00:12:05.39 0.3 undecidable manual P 320 0.2761 50 -0.27 71
IV.MC2.EHZ. 2018-09-15T00:12:05.30 0.6 undecidable manual S 14 0.1214 124 0.39 47
IV.SMA1.EHZ. 2018-09-15T00:12:04.05 0.3 undecidable manual P 140 0.2131 111 -0.29 71
IV.FDMO.HHZ. 2018-09-15T00:12:04.75 0.3 undecidable manual P 350 0.2464 108 -0.29 71
OB.GAVE.EHZ. 2018-09-15T00:12:04.30 0.3 undecidable manual P 242 0.2113 111 0 75
IV.LNSS.HHZ. 2018-09-15T00:12:04.15 0.1 undecidable manual P 202 0.2059 112 -0.04 100
IV.FEMA.HNZ. 2018-09-15T00:12:03.72 0.3 undecidable manual P 337 0.1835 114 0 76
IV.MMO1.EHZ. 2018-09-15T00:12:03.29 0.3 undecidable manual P 51 0.1691 116 -0.14 74
IV.T1299.EHZ. 2018-09-15T00:12:03.90 0.6 undecidable manual P 148 0.1871 114 0.09 50
IV.MTRA.EHZ. 2018-09-15T00:12:03.71 0.1 undecidable manual P 101 0.1862 114 -0.08 100
IV.NRCA.HHZ. 2018-09-15T00:12:02.86 0.6 undecidable manual S 329 0.0468 150 -0.03 52
IV.MC2.EHZ. 2018-09-15T00:12:02.71 0.1 undecidable manual P 14 0.1214 124 0.19 99
IV.NRCA.HHZ. 2018-09-15T00:12:01.56 0.1 undecidable manual P 329 0.0468 150 0.2 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.3 0.000355 0.08 AML other m 2018-09-15T00:12:02.95
IV.NRCA.HHE. ML:1.3 0.0003695 0.08 AML other m 2018-09-15T00:12:02.91
IV.MTRA.EHN. ML:1 7.065E-5 0.3 AML other m 2018-09-15T00:12:06.95
IV.MTRA.EHE. ML:0.9 5.58E-5 0.3 AML other m 2018-09-15T00:12:07.21
IV.CESI.HHN. ML:0.8 2.83E-5 0.32 AML other m 2018-09-15T00:12:10.24
IV.CESI.HHE. ML:0.5 1.349E-5 0.16 AML other m 2018-09-15T00:12:12.32
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