Earthquake with magnitude of ML 1.2 on date 20-10-2019 and time 02:41:26 (UTC) in region 1 km W Norcia (PG)

A magnitude ML 1.2 earthquake occured in region: 1 km W Norcia (PG), on

  • 20-10-2019 02:41:26 (UTC)
  • 20-10-2019 04:41:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.79, 13.08 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 2 4957 4957
Cascia PG 9 3217 8174
Preci PG 11 724 8898
Cerreto di Spoleto PG 14 1075 9973
Castelsantangelo sul Nera MC 14 281 10254
Poggiodomo PG 14 117 10371
Visso MC 16 1107 11478
Sellano PG 17 1079 12557
Accumoli RI 17 667 13224
Vallo di Nera PG 18 364 13588
Arquata del Tronto AP 18 1178 14766
Ussita MC 18 444 15210
Monteleone di Spoleto PG 18 599 15809
Cittareale RI 20 482 16291

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km SE of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
53 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
66 Km SE of Perugia (166134 inhabitants)
90 Km E of Viterbo (67173 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
94 Km N of Tivoli (56533 inhabitants)
99 Km SW of Ancona (100861 inhabitants)
100 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 1.2 2019-10-20
02:41:26
42.79 13.08 9 2019-10-20
02:47:33
Sala Sismica INGV-Roma 73349991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-20 02:41:26 ± 0.07
Latitude 42.79 ± 0.00
Longitude 13.08 ± 0.00
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 73349991

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 327
Semi-minor axis of confidence ellipse (meter) 272
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 223
Circular confidence region, given by single value of horizontal uncertainty (meter) 330
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 45
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.62323
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 73349991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-20 02:47:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PE3.EHZ. 2019-10-20T02:42:00.06 3.0 undecidable manual S -0.11 0
IV.MURB.HHZ. 2019-10-20T02:41:48.98 0.3 undecidable manual S 320 0.6232 50 0.79 56
IV.EL6.EHZ. 2019-10-20T02:41:46.34 0.3 undecidable manual S 2 0.5414 50 0.57 62
IV.SNTG.HHZ. 2019-10-20T02:41:43.87 0.6 undecidable manual S 348 0.4775 50 0 48
IV.TERO.HHZ. 2019-10-20T02:41:41.82 0.1 undecidable manual S 113 0.4209 50 -0.37 90
IV.MOMA.HHZ. 2019-10-20T02:41:41.22 0.3 undecidable manual S 273 0.3723 50 0.46 66
IV.MMUR.HNZ. 2019-10-20T02:41:40.04 3.0 undecidable manual P 0.17 0
IV.MF5.EHZ. 2019-10-20T02:41:40.55 0.3 undecidable manual S 54 0.3435 50 0.63 63
IV.MURB.HHZ. 2019-10-20T02:41:39.22 0.1 undecidable manual P 320 0.6232 50 0.1 91
IV.CSP1.EHZ. 2019-10-20T02:41:38.86 0.3 undecidable manual S 17 0.3175 50 -0.28 70
IV.ARRO.EHZ. 2019-10-20T02:41:38.83 0.3 undecidable manual S 228 0.3094 50 -0.07 73
IV.RM33.EHZ. 2019-10-20T02:41:38.35 0.3 undecidable manual S 160 0.2968 50 -0.16 72
IV.ATCC.EHZ. 2019-10-20T02:41:37.14 0.6 negative manual P 321 0.5099 50 -0.04 47
IV.EL6.EHZ. 2019-10-20T02:41:37.83 0.1 undecidable manual P 2 0.5414 50 0.11 92
IV.MTRA.EHZ. 2019-10-20T02:41:36.17 0.3 undecidable manual S 97 0.2365 108 -0.13 73
IV.SNTG.HHZ. 2019-10-20T02:41:36.02 0.1 undecidable manual P 348 0.4775 50 -0.6 83
IV.CESI.HHZ. 2019-10-20T02:41:36.62 0.3 undecidable manual S 330 0.2509 107 -0.22 72
IV.SMA1.EHZ. 2019-10-20T02:41:36.87 0.3 undecidable manual S 130 0.2464 107 0.21 72
IV.MNTT.EHZ. 2019-10-20T02:41:36.81 0.1 undecidable manual P 54 0.4676 50 0.35 89
IV.FDMO.HHZ. 2019-10-20T02:41:36.53 0.1 undecidable manual S 2 0.2482 107 -0.22 96
IV.TERO.HHZ. 2019-10-20T02:41:35.30 0.1 undecidable manual P 113 0.4209 50 -0.35 90
IV.MMO1.EHZ. 2019-10-20T02:41:35.74 0.1 undecidable manual S 59 0.214 110 0.25 96
IV.MF5.EHZ. 2019-10-20T02:41:34.44 0.1 undecidable manual P 54 0.3435 50 0.1 96
IV.MOMA.HHZ. 2019-10-20T02:41:34.76 0.1 undecidable manual P 273 0.3723 50 -0.06 96
IV.LNSS.HHZ. 2019-10-20T02:41:34.69 0.6 undecidable manual S 188 0.1871 113 0.18 49
IV.ASSB.HHZ. 2019-10-20T02:41:34.86 0.1 undecidable manual P 310 0.3984 50 -0.41 89
IV.RM33.EHZ. 2019-10-20T02:41:33.37 0.1 undecidable manual P 160 0.2968 50 -0.16 96
IV.CSP1.EHZ. 2019-10-20T02:41:33.52 0.1 undecidable manual P 17 0.3175 50 -0.37 91
IV.ARRO.EHZ. 2019-10-20T02:41:33.75 0.1 undecidable manual P 228 0.3094 50 0 99
IV.SMA1.EHZ. 2019-10-20T02:41:32.51 0.1 undecidable manual P 130 0.2464 107 0.05 99
IV.FDMO.HHZ. 2019-10-20T02:41:32.45 0.6 negative manual P 2 0.2482 107 -0.06 49
IV.MTRA.EHZ. 2019-10-20T02:41:32.24 0.1 undecidable manual P 97 0.2365 108 -0.01 100
IV.CESI.HHZ. 2019-10-20T02:41:32.42 0.1 undecidable manual P 330 0.2509 107 -0.14 97
IV.MMO1.EHZ. 2019-10-20T02:41:31.88 0.1 undecidable manual P 59 0.214 110 0.1 99
IV.LNSS.HHZ. 2019-10-20T02:41:31.58 0.1 negative manual P 188 0.1871 113 0.36 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.4 0.0001705 0.16 AML other m 2019-10-20T02:41:35.42
IV.LNSS.HHN. ML:1.4 0.000166 0.16 AML other m 2019-10-20T02:41:35.73
IV.CESI.HHE. ML:1 5.95E-5 1.54 AML other m 2019-10-20T02:41:36.18
IV.CESI.HHN. ML:1.5 0.000158 0.6 AML other m 2019-10-20T02:41:37.05
IV.FDMO.HHE. ML:1 4.92E-5 0.9 AML other m 2019-10-20T02:41:37.08
IV.FDMO.HHN. ML:1 4.775E-5 1.38 AML other m 2019-10-20T02:41:38.70
IV.SMA1.EHN. ML:1.1 7.165E-5 0.88 AML other m 2019-10-20T02:41:38.69
IV.SMA1.EHE. ML:1.2 8.6E-5 1.24 AML other m 2019-10-20T02:41:38.89
IV.MTRA.EHE. ML:1.2 9.245E-5 0.6 AML other m 2019-10-20T02:41:38.06
IV.MTRA.EHN. ML:1.1 7.01E-5 0.68 AML other m 2019-10-20T02:41:39.51
IV.RM33.EHN. ML:1.1 6.165E-5 0.42 AML other m 2019-10-20T02:41:39.96
IV.RM33.EHE. ML:1.1 4.78E-5 0.8 AML other m 2019-10-20T02:41:40.15
IV.MOMA.HHE. ML:1.4 8.06E-5 0.2 AML other m 2019-10-20T02:41:42.13
IV.MOMA.HHN. ML:1.1 3.93E-5 0.72 AML other m 2019-10-20T02:41:42.56
IV.TERO.HHN. ML:1.1 3.79E-5 0.62 AML other m 2019-10-20T02:41:43.53
IV.TERO.HHE. ML:1 3.03E-5 0.28 AML other m 2019-10-20T02:41:43.39
IV.MURB.HHE. ML:1.5 4.765E-5 0.18 AML other m 2019-10-20T02:41:50.47
IV.MURB.HHN. ML:1.5 5.35E-5 0.42 AML other m 2019-10-20T02:41:50.69
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