Earthquake with magnitude of ML 1.1 on date 17-08-2019 and time 13:45:45 (UTC) in region 5 km S Norcia (PG)

A magnitude ML 1.1 earthquake occured in region: 5 km S Norcia (PG), on

  • 17-08-2019 13:45:45 (UTC)
  • 17-08-2019 15:45:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.75, 13.1 at 11 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 5 4957 4957
Cascia PG 8 3217 8174
Accumoli RI 13 667 8841
Poggiodomo PG 14 117 8958
Preci PG 15 724 9682
Cittareale RI 15 482 10164
Arquata del Tronto AP 16 1178 11342
Monteleone di Spoleto PG 16 599 11941
Castelsantangelo sul Nera MC 17 281 12222
Cerreto di Spoleto PG 17 1075 13297
Vallo di Nera PG 20 364 13661

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km SE of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
50 Km W of Teramo (54892 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
70 Km SE of Perugia (166134 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km E of Viterbo (67173 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
91 Km N of Tivoli (56533 inhabitants)
96 Km W of Pescara (121014 inhabitants)
98 Km W of Chieti (51815 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
Rev 100 ML 1.1 2019-08-17
13:45:45
42.75 13.1 11 2019-08-17
13:52:09
Sala Sismica INGV-Roma 71573171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-17 13:45:45 ± 0.1
Latitude 42.75 ± 0.00
Longitude 13.10 ± 0.01
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71573171

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 822
Semi-minor axis of confidence ellipse (meter) 359
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 272
Circular confidence region, given by single value of horizontal uncertainty (meter) 820
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 205
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.45596
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 71573171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-17 13:52:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IX.STN3.HHZ.02 2019-08-17T13:47:23.18 3.0 undecidable manual Sg 10.09 0
GU.ENR.HHZ. 2019-08-17T13:47:21.47 3.0 undecidable manual Sn -1.18 0
IV.PTRP.HHZ. 2019-08-17T13:47:16.55 3.0 undecidable manual Sn -2.29 0
GU.GORR.HHZ. 2019-08-17T13:47:06.78 3.0 undecidable manual Sg 8.96 0
IV.DGI.HHZ. 2019-08-17T13:47:06.72 3.0 undecidable manual Sn -2.64 0
IV.CRJA.HHZ. 2019-08-17T13:47:05.58 3.0 undecidable manual Pg 12.08 0
CR.ZAG.BHZ. 2019-08-17T13:46:40.64 3.0 undecidable manual Pn 2.84 0
IT.VNF1.HGZ. 2019-08-17T13:46:37.00 3.0 undecidable manual Sg 1.2 0
IV.MILN.HHZ. 2019-08-17T13:46:26.86 3.0 undecidable manual Pn -3.7 0
IV.CTI.HHZ. 2019-08-17T13:46:21.82 3.0 undecidable manual Pn -5.77 0
IV.MCRV.HHZ. 2019-08-17T13:46:21.18 3.0 negative manual Pn -3.33 0
IV.VAGA.HHZ. 2019-08-17T13:46:13.76 3.0 undecidable manual Pg 2.23 0
IV.PTRJ.HHZ. 2019-08-17T13:46:10.97 3.0 undecidable manual Pn -3.22 0
IV.ZCCA.HHZ. 2019-08-17T13:46:10.39 3.0 negative manual Pn 2.54 0
IV.EL6.EHZ. 2019-08-17T13:46:06.48 3.0 undecidable manual Sg 2.57 0
IV.GIGS.HHZ. 2019-08-17T13:46:01.87 0.3 undecidable manual S 130 0.456 50 0.13 68
IV.TERO.HHZ. 2019-08-17T13:45:59.66 0.6 undecidable manual S 109 0.3903 50 -0.12 46
IV.CSP1.EHZ. 2019-08-17T13:45:58.78 0.6 undecidable manual S 12 0.3489 50 0.21 46
IV.RM33.EHZ. 2019-08-17T13:45:55.83 0.6 undecidable manual S 161 0.2554 50 0.05 48
IV.SMA1.EHZ. 2019-08-17T13:45:54.84 0.6 undecidable manual S 125 0.2086 50 0.42 45
IV.GIGS.HHZ. 2019-08-17T13:45:54.77 1.0 negative manual P 130 0.456 50 -0.19 22
IV.MTRA.EHZ. 2019-08-17T13:45:54.31 0.6 undecidable manual S 88 0.2158 50 -0.32 46
IV.MMO1.EHZ. 2019-08-17T13:45:54.72 0.6 undecidable manual S 48 0.2221 50 -0.08 48
IV.MF5.EHZ. 2019-08-17T13:45:53.53 1.0 negative manual P 48 0.3534 50 0.33 22
IV.MC2.EHZ. 2019-08-17T13:45:53.56 0.6 undecidable manual S 22 0.1727 119 0.22 47
IV.TERO.HHZ. 2019-08-17T13:45:53.85 0.6 undecidable manual P 109 0.3903 50 0.02 47
IV.CSP1.EHZ. 2019-08-17T13:45:52.94 1.0 positive manual P 12 0.3489 50 -0.19 23
IV.RM33.EHZ. 2019-08-17T13:45:51.28 0.6 positive manual P 161 0.2554 50 -0.24 46
IV.MC2.EHZ. 2019-08-17T13:45:50.08 0.3 positive manual P 22 0.1727 119 -0.03 74
IV.MMO1.EHZ. 2019-08-17T13:45:50.77 0.6 negative manual P 48 0.2221 50 -0.18 47
TV.SF01.EHZ. 2019-08-17T13:45:50.46 3.0 positive manual P 2 0
IV.NRCA.HNZ. 2019-08-17T13:45:50.52 0.6 undecidable manual S 6 0.0836 139 -0.1 49
IV.SMA1.EHZ. 2019-08-17T13:45:50.79 0.6 undecidable manual P 125 0.2086 50 0.06 49
IV.MTRA.EHZ. 2019-08-17T13:45:50.62 1.0 undecidable manual P 88 0.2158 50 -0.23 23
IV.NRCA.HNZ. 2019-08-17T13:45:48.57 0.1 positive manual P 6 0.0836 139 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.9 0.0009825 0.08 AML other m 2019-08-17T13:45:50.58
IV.NRCA.HHN. ML:1.5 0.000396 0.06 AML other m 2019-08-17T13:45:51.29
IV.MTRA.EHN. ML:1.2 9.655E-5 1.88 AML other m 2019-08-17T13:45:54.95
IV.MTRA.EHE. ML:1.2 9.11E-5 0.7 AML other m 2019-08-17T13:45:55.67
IV.RM33.EHN. ML:1 4.42E-5 1.16 AML other m 2019-08-17T13:45:56.09
IV.SMA1.EHE. ML:0.9 5.27E-5 0.4 AML other m 2019-08-17T13:45:56.64
IV.SMA1.EHN. ML:1 6.04E-5 1.7 AML other m 2019-08-17T13:45:57.93
IV.RM33.EHE. ML:1 5.3E-5 0.2 AML other m 2019-08-17T13:45:57.32
IV.TERO.HHE. ML:0.9 2.75E-5 0.1 AML other m 2019-08-17T13:46:00.25
IV.TERO.HHN. ML:1.1 3.78E-5 0.54 AML other m 2019-08-17T13:46:00.68
IV.EL6.EHN. ML:1.2 3.22E-5 0.54 AML other m 2019-08-17T13:46:06.40
IV.EL6.EHE. ML:1.3 3.93E-5 0.54 AML other m 2019-08-17T13:46:09.49
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