Earthquake with magnitude of ML 0.4 on date 21-08-2019 and time 00:05:59 (Italy) in region 2 km E Norcia (PG)

A magnitude ML 0.4 earthquake occured in region: 2 km E Norcia (PG), on

  • 20-08-2019 22:05:59 (UTC)
  • 21-08-2019 00:05:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8, 13.12 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
Norcia PG 2 4957 4957
Preci PG 11 724 5681
Castelsantangelo sul Nera MC 11 281 5962
Cascia PG 13 3217 9179
Visso MC 15 1107 10286
Arquata del Tronto AP 15 1178 11464
Ussita MC 16 444 11908
Accumoli RI 16 667 12575
Cerreto di Spoleto PG 16 1075 13650
Poggiodomo PG 18 117 13767
Montegallo AP 18 523 14290
Sellano PG 18 1079 15369

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
68 Km SE of Perugia (166134 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
97 Km W of Pescara (121014 inhabitants)
100 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 1000 ML 0.4 2019-08-20
22:05:59
42.8 13.12 11 2019-11-13
14:31:04
Bollettino Sismico Italiano INGV 73036571
Rev 100 ML 0.9 2019-08-20
22:05:59
42.81 13.12 11 2019-08-20
22:16:42
Sala Sismica INGV-Roma 71663611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-20 22:05:59 ± 0.05
Latitude 42.80 ± 0.00
Longitude 13.12 ± 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 73036571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 317
Semi-minor axis of confidence ellipse (meter) 205
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 77
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) 79
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.41279
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:0.4

Field Value
Value 0.4
Uncertainty 0
Num. used stations 3
Type of magnitude ML
Reference to an origin 73036571
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-04 09:22:37

ML:0.9

Field Value
Value 0.9
Uncertainty 0.4
Num. used stations 7
Type of magnitude ML
Reference to an origin 71663611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-20 22:16:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MILN.HHZ. 2019-08-20T22:07:43.28 3.0 undecidable manual Sn 2.41 0
GU.BLANC.HHZ. 2019-08-20T22:07:21.07 3.0 undecidable manual Pn 4.8 0
IV.ZCCA.HHZ. 2019-08-20T22:06:59.89 3.0 undecidable manual Sn -0.06 0
CR.STON.BHZ. 2019-08-20T22:06:54.92 3.0 undecidable manual Pn 4.24 0
IV.MCRV.HHZ. 2019-08-20T22:06:39.00 3.0 undecidable manual Pg 0.68 0
IT.UMBT.HGZ. 2019-08-20T22:06:23.53 3.0 undecidable manual S -0.07 0
IV.MOMA.HNZ. 2019-08-20T22:06:14.30 0.3 undecidable manual S 270 0.4011 50 0.37 66
IV.ASSB.HHN. 2019-08-20T22:06:14.57 0.6 undecidable manual S 306 0.4128 50 0.32 44
IV.COR1.EHZ. 2019-08-20T22:06:14.97 3.0 undecidable manual P -0.02 0
IV.RM33.HNE. 2019-08-20T22:06:11.08 0.6 undecidable manual S 166 0.3022 50 0.09 47
IV.CAMP.HHE. 2019-08-20T22:06:11.96 0.6 undecidable manual S 141 0.3426 50 -0.21 46
IV.MML1.HNE. 2019-08-20T22:06:11.42 0.6 undecidable manual S 341 0.3283 50 -0.34 45
IV.CSP1.EHZ. 2019-08-20T22:06:10.85 0.3 undecidable manual S 12 0.2959 50 0.05 72
IV.CESI.HHE. 2019-08-20T22:06:09.54 0.3 undecidable manual S 322 0.2554 50 -0.05 72
IV.FDMO.HHZ. 2019-08-20T22:06:08.78 0.3 undecidable manual S 355 0.2347 50 -0.2 70
IV.LNSS.HNZ. 2019-08-20T22:06:08.08 0.6 undecidable manual S 196 0.2077 50 -0.11 48
IV.ASSB.HHN. 2019-08-20T22:06:08.30 0.6 undecidable manual P 306 0.4128 50 0.26 45
IV.T1299.EHE. 2019-08-20T22:06:08.48 0.3 undecidable manual S 144 0.2077 50 0.3 69
IV.MMO1.EHZ. 2019-08-20T22:06:07.24 0.1 undecidable manual S 58 0.1808 50 -0.16 96
IV.MOMA.HNZ. 2019-08-20T22:06:07.52 0.6 undecidable manual P 270 0.4011 50 -0.32 44
IV.GAVE.EHE. 2019-08-20T22:06:07.85 0.3 undecidable manual S 236 0.1979 50 -0.04 73
IV.CAMP.HHE. 2019-08-20T22:06:06.97 0.6 undecidable manual P 141 0.3426 50 0.14 47
IV.MML1.HNE. 2019-08-20T22:06:06.68 0.6 undecidable manual P 341 0.3283 50 0.09 47
IV.FEMA.HNE. 2019-08-20T22:06:06.89 0.3 undecidable manual S 343 0.1664 50 -0.08 73
IV.MF5.EHN. 2019-08-20T22:06:06.61 0.1 undecidable manual P 53 0.3112 50 0.31 90
IV.FAGN.HHZ. 2019-08-20T22:06:05.47 3.0 undecidable manual P -5.87 0
IV.SMA1.EHN. 2019-08-20T22:06:05.17 0.6 undecidable manual P 137 0.2347 50 0.17 47
IV.CSP1.EHZ. 2019-08-20T22:06:05.71 0.3 undecidable manual P 12 0.2959 50 -0.33 68
IV.CESI.HHE. 2019-08-20T22:06:05.44 0.3 undecidable manual P 322 0.2554 50 0.09 72
IV.RM33.HNE. 2019-08-20T22:06:05.84 0.3 undecidable manual P 166 0.3022 50 -0.31 68
IV.MC2.EHZ. 2019-08-20T22:06:05.67 0.3 undecidable manual S 26 0.1205 129 0.14 73
IV.GAVE.EHE. 2019-08-20T22:06:04.41 0.1 undecidable manual P 236 0.1979 50 0.05 97
IV.T1299.EHE. 2019-08-20T22:06:04.71 0.3 undecidable manual P 144 0.2077 50 0.18 71
IV.MMO1.EHZ. 2019-08-20T22:06:04.04 0.1 undecidable manual P 58 0.1808 50 -0.04 98
IV.FDMO.HHZ. 2019-08-20T22:06:04.96 0.3 undecidable manual P 355 0.2347 50 -0.03 73
IV.LNSS.HNZ. 2019-08-20T22:06:04.14 0.1 undecidable manual P 196 0.2077 50 -0.39 90
IV.FEMA.HNE. 2019-08-20T22:06:04.01 0.3 undecidable manual P 343 0.1664 50 0.18 72
IV.MC2.EHZ. 2019-08-20T22:06:03.20 0.1 undecidable manual P 26 0.1205 129 0.21 96
IV.NRCA.HHZ. 2019-08-20T22:06:03.16 0.3 undecidable manual S 356 0.0306 163 -0.35 71
IV.NRCA.HHZ. 2019-08-20T22:06:01.91 0.1 undecidable manual P 356 0.0306 163 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.4 0.00046 0.12 AML other m 2019-08-20T22:06:03.27
IV.NRCA.HNN. ML:1.4 0.0003969625 0.1152 AML other m 2019-08-20T22:06:03.33
IV.NRCA.HHE. ML:1 0.00018 0.18 AML other m 2019-08-20T22:06:03.35
IV.NRCA.HNE. ML:1 0.000154800095 0.064 AML other m 2019-08-20T22:06:03.35
IV.FDMO.HHN. ML:0.4 1.655E-5 1.56 AML other m 2019-08-20T22:06:09.87
IV.FDMO.HHE. ML:0.4 1.505E-5 1.08 AML other m 2019-08-20T22:06:09.12
IV.CSP1.EHN. ML:0.4 1.148177E-5 0.4608 AML other m 2019-08-20T22:06:11.38
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