Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 23-07-2019 and time 03:27:01 (UTC) in region 5 km E Norcia (PG)

A magnitude ML 1.4 earthquake occured in region: 5 km E Norcia (PG), on

  • 23-07-2019 03:27:01 (UTC)
  • 23-07-2019 05:27:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8010, 13.1590 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.

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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 11 281 5238
Arquata del Tronto AP 12 1178 6416
Preci PG 13 724 7140
Accumoli RI 14 667 7807
Cascia PG 15 3217 11024
Montegallo AP 15 523 11547
Visso MC 16 1107 12654
Ussita MC 16 444 13098
Montemonaco AP 18 604 13702
Cerreto di Spoleto PG 20 1075 14777

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Foligno (57155 inhabitants)
47 Km W of Teramo (54892 inhabitants)
50 Km NE of Terni (111501 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
71 Km E of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
94 Km W of Pescara (121014 inhabitants)
95 Km SW of Ancona (100861 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km E of Viterbo (67173 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 1.4 2019-07-23
03:27:01		 42.8007 13.1592 10 2019-07-23
03:33:36		 Sala Sismica INGV-Roma 70811111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-23 03:27:01 ± 0.07
Latitude 42.8007 ± 0.0036
Longitude 13.1592 ± 0.0049
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 70811111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 390
Semi-minor axis of confidence ellipse (meter) 334
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 112
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.71496
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 70811111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-23 03:33:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RDP.HHZ. 2019-07-23T03:27:38.72 3.0 undecidable manual S 0.09 0
IV.ARVD.HHZ. 2019-07-23T03:27:26.14 0.6 undecidable manual S 347 79.365 50 0.67 39
IV.EL6.EHZ. 2019-07-23T03:27:20.33 0.6 undecidable manual S 355 58.7967 50 0.33 44
IV.MNTT.EHZ. 2019-07-23T03:27:17.99 3.0 undecidable manual S 51 45.8208 50 1.47 0
IV.ASSB.HHZ. 2019-07-23T03:27:17.28 0.6 undecidable manual S 304 48.7179 50 -0.02 48
IV.MOMA.HHZ. 2019-07-23T03:27:17.84 0.6 undecidable manual S 271 47.9187 50 0.75 40
IV.ARRO.EHZ. 2019-07-23T03:27:15.30 0.6 undecidable manual S 233 40.4262 50 0.22 47
IV.ARVD.HHZ. 2019-07-23T03:27:15.93 0.6 undecidable manual P 347 79.365 50 0.53 40
IV.CAMP.HHZ. 2019-07-23T03:27:13.54 0.6 undecidable manual S 145 35.742 50 -0.3 46
IV.MF5.EHZ. 2019-07-23T03:27:13.06 0.6 undecidable manual S 50 32.0457 50 0.21 48
IV.RM33.EHZ. 2019-07-23T03:27:13.26 0.6 undecidable manual S 172 32.6451 50 0.24 47
IV.GUMA.HHZ. 2019-07-23T03:27:12.88 0.6 undecidable manual S 26 32.3454 50 -0.06 49
IV.EL6.EHZ. 2019-07-23T03:27:12.03 0.6 positive manual P 355 58.7967 50 -0.21 45
IV.SNTG.HHZ. 2019-07-23T03:27:11.06 0.6 undecidable manual P 341 53.4021 50 -0.35 44
IV.CESI.HHZ. 2019-07-23T03:27:11.95 0.6 undecidable manual S 318 30.6471 50 -0.53 44
IV.GAVE.EHZ. 2019-07-23T03:27:11.27 0.6 undecidable manual S 241 24.753 50 0.38 46
IV.ASSB.HHZ. 2019-07-23T03:27:10.26 0.1 undecidable manual P 304 48.7179 50 -0.42 88
IV.MOMA.HHZ. 2019-07-23T03:27:10.49 0.1 undecidable manual P 271 47.9187 50 -0.08 95
IV.GIGS.HHZ. 2019-07-23T03:27:10.99 0.1 undecidable manual P 139 51.2154 50 -0.08 94
IV.MNTT.EHZ. 2019-07-23T03:27:10.51 0.1 negative manual P 51 45.8208 50 0.28 91
IV.SMA1.EHZ. 2019-07-23T03:27:10.60 0.6 undecidable manual S 143 23.754 113 -0.01 50
IV.OFFI.HHZ. 2019-07-23T03:27:10.57 0.1 negative manual P 71 45.3213 50 0.41 89
IV.LNSS.HHZ. 2019-07-23T03:27:10.84 0.6 undecidable manual S 204 23.9538 50 0.14 48
IV.ARRO.EHZ. 2019-07-23T03:27:09.29 0.1 undecidable manual P 233 40.4262 50 -0.12 95
IV.RM33.EHZ. 2019-07-23T03:27:08.50 0.1 undecidable manual P 172 32.6451 50 0.29 93
IV.CAMP.HHZ. 2019-07-23T03:27:08.39 0.1 undecidable manual P 145 35.742 50 -0.3 92
IV.GUMA.HHZ. 2019-07-23T03:27:07.93 0.1 undecidable manual P 26 32.3454 50 -0.24 94
IV.CESI.HHZ. 2019-07-23T03:27:07.53 0.1 undecidable manual P 318 30.6471 50 -0.37 92
IV.MF5.EHZ. 2019-07-23T03:27:07.93 0.6 negative manual P 50 32.0457 50 -0.19 48
IV.SMA1.EHZ. 2019-07-23T03:27:06.66 0.1 undecidable manual P 143 23.754 113 -0.17 98
IV.LNSS.HHZ. 2019-07-23T03:27:06.88 0.1 negative manual P 204 23.9538 50 0.01 100
IV.GAVE.EHZ. 2019-07-23T03:27:06.88 0.1 undecidable manual P 241 24.753 50 -0.11 98
IV.NRCA.HNZ. 2019-07-23T03:27:05.72 0.6 undecidable manual S 315 5.1948 153 0.09 50
IV.NRCA.HNZ. 2019-07-23T03:27:04.07 0.1 positive manual P 315 5.1948 153 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.2 0.00009645000000000001 0.08 AML other m 2019-07-23T03:27:11.27
IV.LNSS.HHE. ML:1.6 0.000254 0.12 AML other m 2019-07-23T03:27:11.34
IV.SMA1.EHE. ML:1.1 0.00008499999999999999 0.24 AML other m 2019-07-23T03:27:11.23
IV.LNSS.HHN. ML:1.6 0.000253 0.38 AML other m 2019-07-23T03:27:11.63
IV.GAVE.EHN. ML:1.5 0.000206 0.88 AML other m 2019-07-23T03:27:11.76
IV.CESI.HHE. ML:1.6 0.00016949999999999997 0.94 AML other m 2019-07-23T03:27:12.59
IV.GAVE.EHE. ML:1.5 0.000179 0.28 AML other m 2019-07-23T03:27:12.31
IV.CESI.HHN. ML:1.8 0.000298 0.38 AML other m 2019-07-23T03:27:12.44
IV.RM33.EHN. ML:1.2 0.00007195 0.9 AML other m 2019-07-23T03:27:14.87
IV.RM33.EHE. ML:1.2 0.00006535 0.12 AML other m 2019-07-23T03:27:15.28
IV.ASSB.HHE. ML:1.4 0.00007744999999999999 0.68 AML other m 2019-07-23T03:27:17.80
IV.ARRO.EHN. ML:1.2 0.00005145 0.86 AML other m 2019-07-23T03:27:18.51
IV.ARRO.EHE. ML:1.2 0.00005545 0.18 AML other m 2019-07-23T03:27:18.22
IV.MOMA.HHE. ML:1.6 0.000117 0.14 AML other m 2019-07-23T03:27:18.64
IV.SNTG.HHE. ML:0.9 0.00001845 0.48 AML other m 2019-07-23T03:27:18.79
IV.ASSB.HHN. ML:1.4 0.000060950000000000004 1.42 AML other m 2019-07-23T03:27:19.12
IV.MNTT.EHN. ML:1.8 0.000177 1.54 AML other m 2019-07-23T03:27:19.22
IV.MNTT.EHE. ML:1.7 0.000144 0.3 AML other m 2019-07-23T03:27:19.70
IV.MOMA.HHN. ML:1.4 0.0000645 0.22 AML other m 2019-07-23T03:27:19.74
IV.SNTG.HHN. ML:0.9 0.00001925 0.48 AML other m 2019-07-23T03:27:20.66
IV.EL6.EHN. ML:1.3 0.00004505 0.44 AML other m 2019-07-23T03:27:23.34
IV.EL6.EHE. ML:1.2 0.00003680000000000001 0.42 AML other m 2019-07-23T03:27:32.36
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