Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 21-09-2019 and time 17:07:41 (Italy) in region 5 km E Norcia (PG)

A magnitude ML 1.2 earthquake occured in region: 5 km E Norcia (PG), on

  • 21-09-2019 15:07:41 (UTC)
  • 21-09-2019 17:07:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8040, 13.1520 at 14 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.

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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
Castelsantangelo sul Nera MC 10 281 5238
Arquata del Tronto AP 12 1178 6416
Preci PG 12 724 7140
Accumoli RI 14 667 7807
Cascia PG 15 3217 11024
Visso MC 15 1107 12131
Montegallo AP 16 523 12654
Ussita MC 16 444 13098
Montemonaco AP 18 604 13702
Cerreto di Spoleto PG 19 1075 14777

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Foligno (57155 inhabitants)
48 Km W of Teramo (54892 inhabitants)
49 Km NE of Terni (111501 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
71 Km E of Perugia (166134 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
95 Km W of Pescara (121014 inhabitants)
95 Km SW of Ancona (100861 inhabitants)
96 Km E of Viterbo (67173 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
97 Km NW of Chieti (51815 inhabitants)
98 Km NE of Tivoli (56533 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
Reviewed
Rev100 		ML 1.2 2019-09-21
15:07:41		 42.8042 13.1515 14 2019-09-21
15:21:24		 Sala Sismica INGV-Roma 72617561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-21 15:07:41 ± 0.06
Latitude 42.8042 ± 0.0018
Longitude 13.1515 ± 0.0037
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 72617561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 320
Semi-minor axis of confidence ellipse (meter) 80
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 275
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.53420
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 72617561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-21 15:21:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HNZ. 2019-09-21T15:07:57.11 3.0 undecidable manual S 0.35 0
IV.RM33.EHZ. 2019-09-21T15:07:53.38 0.3 undecidable manual S 171 33.1446 97 0.36 67
IV.CSP1.EHZ. 2019-09-21T15:07:53.09 0.3 undecidable manual S 8 32.2455 97 0.32 68
IV.ATCC.EHZ. 2019-09-21T15:07:52.44 0.3 undecidable manual P 316 59.2962 93 0.21 66
IV.CESI.HHZ. 2019-09-21T15:07:52.17 0.3 undecidable manual S 318 29.9478 98 -0.01 72
IV.ASSB.HHZ. 2019-09-21T15:07:50.43 0.3 undecidable manual P 304 48.0186 94 -0.07 69
IV.LNSS.HHZ. 2019-09-21T15:07:50.56 0.3 undecidable manual S 202 24.0537 102 -0.07 73
IV.GIGS.HHZ. 2019-09-21T15:07:50.64 0.3 undecidable manual P 138 51.9036 94 -0.47 63
IV.GAVE.EHZ. 2019-09-21T15:07:50.65 0.3 undecidable manual S 239 24.3534 102 -0.05 73
IV.MTRA.EHZ. 2019-09-21T15:07:49.58 0.3 undecidable manual S 105 20.6682 106 -0.16 72
IV.TERO.HHZ. 2019-09-21T15:07:49.95 3.0 undecidable manual P -0.18 0
IV.CSP1.EHZ. 2019-09-21T15:07:48.19 0.3 undecidable manual P 8 32.2455 97 0.11 71
IV.MMO1.EHZ. 2019-09-21T15:07:48.96 0.3 undecidable manual S 53 17.7711 111 -0.04 73
IV.RM33.EHZ. 2019-09-21T15:07:48.32 0.3 undecidable manual P 171 33.1446 97 0.1 71
IV.CESI.HHZ. 2019-09-21T15:07:47.70 0.3 undecidable manual P 318 29.9478 98 -0.04 72
IV.MC2.EHZ. 2019-09-21T15:07:47.64 0.3 undecidable manual S 14 12.2766 125 -0.07 74
IV.FDMO.HHZ. 2019-09-21T15:07:47.11 0.3 undecidable manual P 349 26.3514 100 -0.07 72
IV.SMA1.EHZ. 2019-09-21T15:07:47.07 0.3 undecidable manual P 142 24.3534 102 0.18 71
IV.MTRA.EHZ. 2019-09-21T15:07:46.31 0.3 undecidable manual P 105 20.6682 106 -0.02 74
IV.GAVE.EHZ. 2019-09-21T15:07:46.83 0.3 undecidable manual P 239 24.3534 102 -0.06 73
IV.LNSS.HHZ. 2019-09-21T15:07:46.77 0.3 undecidable manual P 202 24.0537 102 -0.08 73
IV.MC2.EHZ. 2019-09-21T15:07:45.18 0.1 undecidable manual P 14 12.2766 125 0.02 100
IV.MMO1.EHZ. 2019-09-21T15:07:45.89 0.3 undecidable manual P 53 17.7711 111 -0.01 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:1.2 0.00011042107499999999 0.2176 AML other m 2019-09-21T15:07:49.99
IV.MTRA.EHN. ML:1.2 0.00009790757 0.2048 AML other m 2019-09-21T15:07:50.10
IV.MTRA.HNE. ML:1.2 0.00010874186999999999 0.2048 AML other m 2019-09-21T15:07:50.09
IV.MTRA.HNN. ML:1.3 0.000118266787 0.2176 AML other m 2019-09-21T15:07:50.11
IV.LNSS.HHE. ML:1.9 0.0005203372499999999 0.1408 AML other m 2019-09-21T15:07:51.14
IV.LNSS.HHN. ML:1.9 0.0004936455 0.2304 AML other m 2019-09-21T15:07:50.82
IV.LNSS.HNE. ML:1.9 0.0004897899999999999 0.128 AML other m 2019-09-21T15:07:51.13
IV.LNSS.HNN. ML:1.9 0.00046409604999999996 0.2304 AML other m 2019-09-21T15:07:50.82
IV.GAVE.EHE. ML:1.3 0.00011863029999999999 0.1408 AML other m 2019-09-21T15:07:52.88
IV.GAVE.EHN. ML:1.2 0.0000877196 0.256 AML other m 2019-09-21T15:07:53.69
IV.SMA1.EHE. ML:1.2 0.00008638759 0.5248 AML other m 2019-09-21T15:07:55.87
IV.SMA1.EHN. ML:1.1 0.00007641563499999999 0.3072 AML other m 2019-09-21T15:07:54.71
IV.FDMO.HHE. ML:1.1 0.00007202356 0.1408 AML other m 2019-09-21T15:07:52.49
IV.FDMO.HHN. ML:1.2 0.00007251915 0.0896 AML other m 2019-09-21T15:07:51.56
IV.CESI.HHE. ML:1.2 0.000065581275 0.1152 AML other m 2019-09-21T15:07:52.31
IV.CESI.HHN. ML:1.4 0.00010977540999999999 0.0768 AML other m 2019-09-21T15:07:52.56
IV.CSP1.EHE. ML:1.2 0.00007488132550000002 0.256 AML other m 2019-09-21T15:07:54.92
IV.CSP1.EHN. ML:1.2 0.00007605813999999999 0.192 AML other m 2019-09-21T15:07:54.36
IV.RM33.EHE. ML:0.9 0.0000348957 0.1536 AML other m 2019-09-21T15:07:54.39
IV.RM33.EHN. ML:0.9 0.000036617360000000003 0.1024 AML other m 2019-09-21T15:07:53.57
IV.ASSB.HHE. ML:1.0 0.000024520069999999997 0.1408 AML other m 2019-09-21T15:07:58.89
IV.ASSB.HHN. ML:1.0 0.00002943162 0.1152 AML other m 2019-09-21T15:07:58.84
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download