Earthquake with magnitude of ML 1.0 on date 21-10-2019 and time 07:01:37 (UTC) in region 8 km E Norcia (PG)

A magnitude ML 1.0 earthquake occured in region: 8 km E Norcia (PG), on

  • 21-10-2019 07:01:37 (UTC)
  • 21-10-2019 09:01:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.76, 13.19 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 8 4957 4957
Accumoli RI 9 667 5624
Arquata del Tronto AP 9 1178 6802
Cascia PG 15 3217 10019
Montegallo AP 15 523 10542
Castelsantangelo sul Nera MC 15 281 10823
Cittareale RI 16 482 11305
Amatrice RI 17 2657 13962
Preci PG 18 724 14686
Acquasanta Terme AP 18 2916 17602
Montemonaco AP 19 604 18206

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km W of Teramo (54892 inhabitants)
45 Km E of Foligno (57155 inhabitants)
49 Km NW of L'Aquila (69753 inhabitants)
49 Km E of Terni (111501 inhabitants)
76 Km SE of Perugia (166134 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
90 Km W of Pescara (121014 inhabitants)
92 Km NW of Chieti (51815 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km NE of Tivoli (56533 inhabitants)
96 Km E of Viterbo (67173 inhabitants)
99 Km S of Ancona (100861 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 1.0 2019-10-21
07:01:37
42.76 13.19 9 2019-10-21
07:07:16
Sala Sismica INGV-Roma 73369261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-21 07:01:37 ± 0.08
Latitude 42.76 ± 0.00
Longitude 13.19 ± 0.01
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 73369261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 529
Semi-minor axis of confidence ellipse (meter) 210
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 278
Circular confidence region, given by single value of horizontal uncertainty (meter) 530
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.33095
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 73369261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-21 07:07:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2019-10-21T07:02:02.21 3.0 undecidable manual S -0.16 0
IV.MF5.EHZ. 2019-10-21T07:01:50.46 0.3 undecidable manual S 41 0.3022 50 0.69 62
IV.CSP1.EHZ. 2019-10-21T07:01:50.57 0.3 undecidable manual S 2 0.331 50 -0.05 73
IV.FDMO.HHZ. 2019-10-21T07:01:48.92 0.3 undecidable manual S 345 0.2842 50 -0.34 69
IV.RM33.EHZ. 2019-10-21T07:01:47.93 0.3 undecidable manual S 175 0.2527 108 -0.25 71
IV.LNSS.HHZ. 2019-10-21T07:01:46.15 0.3 undecidable manual S 214 0.1916 113 0.19 73
IV.MMO1.EHZ. 2019-10-21T07:01:45.06 0.3 undecidable manual S 37 0.1718 116 -0.21 73
IV.CSP1.EHZ. 2019-10-21T07:01:45.19 0.6 undecidable manual P 2 0.331 50 -0.07 48
IV.TERO.HHZ. 2019-10-21T07:01:45.20 3.0 undecidable manual P -0.32 0
IV.MF5.EHZ. 2019-10-21T07:01:44.94 1.0 undecidable manual P 41 0.3022 50 0.17 24
IV.FDMO.HHZ. 2019-10-21T07:01:44.16 0.1 undecidable manual P 345 0.2842 50 -0.31 93
IV.MTRA.EHZ. 2019-10-21T07:01:44.44 0.3 undecidable manual S 92 0.1538 118 -0.22 73
IV.MC2.EHZ. 2019-10-21T07:01:44.79 0.3 undecidable manual S 1 0.1502 119 0.27 72
IV.RM33.EHZ. 2019-10-21T07:01:43.94 0.6 positive manual P 175 0.2527 108 0.09 49
IV.NRCA.HHZ. 2019-10-21T07:01:42.48 0.1 undecidable manual S 324 0.0899 132 -0.14 100
IV.MMO1.EHZ. 2019-10-21T07:01:42.19 0.6 positive manual P 37 0.1718 116 0.02 50
IV.LNSS.HHZ. 2019-10-21T07:01:42.68 0.1 undecidable manual P 214 0.1916 113 0.11 99
IV.MTRA.EHZ. 2019-10-21T07:01:41.89 1.0 undecidable manual P 92 0.1538 118 0.08 25
IV.MC2.EHZ. 2019-10-21T07:01:41.93 0.6 positive manual P 1 0.1502 119 0.19 49
IV.NRCA.HHZ. 2019-10-21T07:01:40.82 0.1 negative manual P 324 0.0899 132 0.18 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.3 0.00029520795 0.08 AML other m 2019-10-21T07:01:42.68
IV.NRCA.HHN. ML:1.1 0.00018380955 0.08 AML other m 2019-10-21T07:01:42.56
IV.NRCA.HNE. ML:1.3 0.00027347365 0.0896 AML other m 2019-10-21T07:01:42.68
IV.NRCA.HNN. ML:1.1 0.00016573861 0.08 AML other m 2019-10-21T07:01:42.56
IV.MTRA.EHE. ML:1.1 0.000111283895 0.1376 AML other m 2019-10-21T07:01:45.02
IV.MTRA.EHN. ML:1.2 0.00014203095 0.2016 AML other m 2019-10-21T07:01:45.02
IV.MTRA.HNE. ML:1.2 0.0001464894 0.1728 AML other m 2019-10-21T07:01:45.09
IV.MTRA.HNN. ML:1.2 0.000137596245 0.4192 AML other m 2019-10-21T07:01:46.60
IV.RM33.EHE. ML:0.7 2.28828585E-5 0.0992 AML other m 2019-10-21T07:01:48.89
IV.RM33.EHN. ML:0.7 2.3781155E-5 1.0176 AML other m 2019-10-21T07:01:48.81
IV.RM33.HNE. ML:1.1 7.143583E-5 1.0688 AML other m 2019-10-21T07:01:48.50
IV.RM33.HNN. ML:0.9 4.19629495E-5 0.3104 AML other m 2019-10-21T07:01:49.90
IV.MF5.EHE. ML:0.8 2.634674E-5 1.4624 AML other m 2019-10-21T07:01:50.97
IV.MF5.EHN. ML:0.8 2.37197456E-5 0.9792 AML other m 2019-10-21T07:01:50.76
IV.CSP1.EHE. ML:0.7 2.147554575E-5 0.24 AML other m 2019-10-21T07:01:51.43
IV.CSP1.EHN. ML:0.7 2.159396E-5 0.2592 AML other m 2019-10-21T07:01:52.60
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