Earthquake with magnitude of ML 0.8 on date 21-10-2019 and time 16:27:59 (UTC) in region 3 km N Norcia (PG)

A magnitude ML 0.8 earthquake occured in region: 3 km N Norcia (PG), on

  • 21-10-2019 16:27:59 (UTC)
  • 21-10-2019 18:27:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.82, 13.1 at 10 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 3 4957 4957
Preci PG 9 724 5681
Castelsantangelo sul Nera MC 10 281 5962
Visso MC 13 1107 7069
Cascia PG 13 3217 10286
Ussita MC 15 444 10730
Cerreto di Spoleto PG 15 1075 11805
Sellano PG 16 1079 12884
Arquata del Tronto AP 17 1178 14062
Poggiodomo PG 18 117 14179
Accumoli RI 18 667 14846
Montegallo AP 19 523 15369

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
52 Km W of Teramo (54892 inhabitants)
57 Km NW of L'Aquila (69753 inhabitants)
66 Km E of Perugia (166134 inhabitants)
92 Km W of Montesilvano (53738 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
95 Km SW of Ancona (100861 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
98 Km N of Tivoli (56533 inhabitants)
99 Km W of Pescara (121014 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 0.8 2019-10-21
16:27:59
42.82 13.1 10 2019-10-21
16:38:52
Sala Sismica INGV-Roma 73378081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-21 16:27:59 ± 0.07
Latitude 42.82 ± 0.00
Longitude 13.10 ± 0.01
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73378081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 654
Semi-minor axis of confidence ellipse (meter) 375
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 94
Circular confidence region, given by single value of horizontal uncertainty (meter) 650
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.01979
Epicentral distance of station farthest from the epicenter (degree) 0.50002
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 0.3
Num. used stations 13
Type of magnitude ML
Reference to an origin 73378081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-21 16:38:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2019-10-21T16:28:10.75 0.3 undecidable manual S 15 0.286 50 0.2 73
IV.ATCC.EHZ. 2019-10-21T16:28:09.40 0.6 undecidable manual P 318 0.5 50 -0.14 47
IV.FDMO.HHZ. 2019-10-21T16:28:08.49 0.6 undecidable manual S 357 0.2203 50 -0.13 50
IV.TERO.HHZ. 2019-10-21T16:28:08.13 1.0 negative manual P 117 0.4164 50 0.02 25
IV.LNSS.HHZ. 2019-10-21T16:28:08.40 0.3 undecidable manual S 192 0.2176 50 -0.14 75
IV.SNTG.HHZ. 2019-10-21T16:28:08.24 0.6 undecidable manual P 345 0.4542 50 -0.52 44
IV.CSP1.EHZ. 2019-10-21T16:28:06.13 1.0 negative manual P 15 0.286 50 0.26 24
IV.RM33.EHZ. 2019-10-21T16:28:06.76 1.0 undecidable manual P 165 0.3175 50 0.34 24
IV.MMO1.EHZ. 2019-10-21T16:28:06.98 0.6 undecidable manual S 63 0.1844 117 -0.48 47
IV.FDMO.HHZ. 2019-10-21T16:28:05.00 0.6 positive manual P 357 0.2203 50 0.24 49
IV.MC2.EHZ. 2019-10-21T16:28:05.22 0.3 undecidable manual S 34 0.1142 129 0.03 78
IV.SMA1.EHZ. 2019-10-21T16:28:05.14 1.0 negative manual P 137 0.2527 50 -0.16 25
IV.MTRA.HNZ. 2019-10-21T16:28:04.96 0.1 undecidable manual P 105 0.2239 50 0.14 100
IV.CESI.HNZ. 2019-10-21T16:28:04.97 0.6 undecidable manual P 323 0.2374 50 -0.08 51
IV.LNSS.HHZ. 2019-10-21T16:28:04.73 0.6 undecidable manual P 192 0.2176 50 0.02 51
IV.MC2.EHZ. 2019-10-21T16:28:03.18 1.0 negative manual P 34 0.1142 129 0.41 24
IV.MMO1.EHZ. 2019-10-21T16:28:03.94 0.6 positive manual P 63 0.1844 117 -0.14 50
IV.NRCA.HHZ. 2019-10-21T16:28:03.09 0.6 undecidable manual S 28 0.0198 168 -0.08 53
IV.NRCA.HHZ. 2019-10-21T16:28:01.87 0.3 undecidable manual P 28 0.0198 168 0.26 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.3 0.0003305818 0.1664 AML other m 2019-10-21T16:28:03.21
IV.NRCA.HNE. ML:1.2 0.0003110801 0.1024 AML other m 2019-10-21T16:28:03.76
IV.NRCA.HNN. ML:1.2 0.000275078295 0.1536 AML other m 2019-10-21T16:28:03.29
IV.FDMO.HHN. ML:0.8 4.054129E-5 0.2816 AML other m 2019-10-21T16:28:09.15
IV.CSP1.EHE. ML:0.6 1.97953455E-5 0.1408 AML other m 2019-10-21T16:28:11.65
IV.CSP1.EHN. ML:0.6 1.949168E-5 0.1408 AML other m 2019-10-21T16:28:11.53
IV.RM33.HNN. ML:1.4 9.6526085E-5 0.6016 AML other m 2019-10-21T16:28:11.61
IV.RM33.EHE. ML:0.6 1.5193875E-5 0.3328 AML other m 2019-10-21T16:28:13.20
IV.RM33.EHN. ML:0.6 1.620548E-5 0.2432 AML other m 2019-10-21T16:28:12.92
IV.TERO.HHE. ML:0.5 1.00260115E-5 0.1024 AML other m 2019-10-21T16:28:14.53
IV.TERO.HHN. ML:0.5 9.3866585E-6 0.1152 AML other m 2019-10-21T16:28:14.64
IV.SNTG.HHE. ML:0.8 1.44046025E-5 0.0512 AML other m 2019-10-21T16:28:14.12
IV.SNTG.HHN. ML:1 2.3912605E-5 0.2304 AML other m 2019-10-21T16:28:14.53
IV.SNTG.HNE. ML:1.7 0.00012308621 0.8192 AML other m 2019-10-21T16:28:07.43
IV.ATCC.EHE. ML:1.1 2.927609E-5 0.1152 AML other m 2019-10-21T16:28:15.52
IV.ATCC.EHN. ML:1.2 4.126993E-5 0.1536 AML other m 2019-10-21T16:28:15.47
IV.NRCA.HHE. ML:1.3 0.00032703435 0.1536 AML other m 2019-10-21T16:28:03.23
IV.FDMO.HHE. ML:0.2 1.247785E-5 0.9728 AML other m 2019-10-21T16:28:08.31
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