Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 03-07-2021 and time 10:40:43 (Italy) in region 4 km E Norcia (PG)

A magnitude ML 1.5 earthquake occured in region: 4 km E Norcia (PG), on

  • 03-07-2021 08:40:43 (UTC)
  • 03-07-2021 10:40:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7940, 13.1460 at 12 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 4 4957 4957
Castelsantangelo sul Nera MC 11 281 5238
Arquata del Tronto AP 13 1178 6416
Preci PG 13 724 7140
Cascia PG 14 3217 10357
Accumoli RI 14 667 11024
Visso MC 16 1107 12131
Montegallo AP 16 523 12654
Ussita MC 17 444 13098
Cerreto di Spoleto PG 19 1075 14173
Montemonaco AP 19 604 14777
Poggiodomo PG 19 117 14894
Cittareale RI 20 482 15376

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Foligno (57155 inhabitants)
48 Km W of Teramo (54892 inhabitants)
48 Km NE of Terni (111501 inhabitants)
53 Km NW of L'Aquila (69753 inhabitants)
71 Km SE of Perugia (166134 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km W of Pescara (121014 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
97 Km NE of Tivoli (56533 inhabitants)
97 Km NW of Chieti (51815 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
Bulletin
Rev1000 		ML 1.5 2021-07-03
08:40:43		 42.7937 13.1463 12 2021-12-29
11:12:14		 Bollettino Sismico Italiano INGV 93176911
Reviewed
Rev100 		ML 1.5 2021-07-03
08:40:43		 42.7908 13.149 11 2021-07-03
08:57:45		 Sala Sismica INGV-Roma 92184451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-03 08:40:43 ± 0.03
Latitude 42.7937 ± 0.0018
Longitude 13.1463 ± 0.0025
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 93176911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 199
Semi-minor axis of confidence ellipse (meter) 70
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 160
Circular confidence region, given by single value of horizontal uncertainty (meter) 200.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 50
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.04587
Epicentral distance of station farthest from the epicenter (degree) 0.71946
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 93176911
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-07-25 02:34:12

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 92184451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-03 08:57:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESX.HHZ. 2021-07-03T08:40:59.36 0.1 undecidable manual S 246 50.0166 91 0.3 88
IV.ARRO.EHZ. 2021-07-03T08:40:56.19 0.6 undecidable manual S 233 39.1275 91 0.04 47
IV.TERO.HHZ. 2021-07-03T08:40:56.82 0.6 undecidable manual S 117 41.8248 91 -0.06 47
IV.ARVD.HHZ. 2021-07-03T08:40:56.47 1.0 undecidable manual P 348 79.8645 91 -0.51 20
IV.EL6.EHZ. 2021-07-03T08:40:54.19 1.0 undecidable manual P 357 59.496 91 0.34 22
IV.RM33.EHZ. 2021-07-03T08:40:54.55 0.6 undecidable manual S 170 32.0457 92 0.28 46
IV.ATCC.EHZ. 2021-07-03T08:40:54.06 1.0 undecidable manual P 317 59.7957 91 0.18 22
IV.CSP1.EHZ. 2021-07-03T08:40:54.78 0.6 undecidable manual S 8 33.4443 92 0.15 47
IV.MF5.EHZ. 2021-07-03T08:40:54.61 0.3 undecidable manual S 50 33.3444 92 0 72
IV.FDMO.HHZ. 2021-07-03T08:40:53.14 0.6 undecidable manual S 350 27.3504 93 0.13 48
IV.CESX.HHZ. 2021-07-03T08:40:52.14 0.1 undecidable manual P 246 50.0166 91 -0.24 90
IT.MTCL.HGZ. 2021-07-03T08:40:52.23 0.6 undecidable manual S 332 25.2525 93 -0.21 47
IV.ASSB.HHZ. 2021-07-03T08:40:52.05 0.6 undecidable manual P 305 48.3183 91 -0.06 47
IV.MOMA.HHZ. 2021-07-03T08:40:51.85 0.1 undecidable manual P 272 46.9197 91 -0.05 94
IV.MTRA.EHZ. 2021-07-03T08:40:51.20 0.6 undecidable manual S 101 20.7681 95 -0.06 49
IV.T1299.HNN. 2021-07-03T08:40:51.44 0.6 undecidable manual S 148 20.868 95 0.16 48
IV.LNSS.HHZ. 2021-07-03T08:40:51.73 0.6 undecidable manual S 202 22.8549 94 -0.09 49
IV.GAVE.EHZ. 2021-07-03T08:40:51.96 0.6 undecidable manual S 241 23.4543 94 0 49
IV.TERO.HHZ. 2021-07-03T08:40:51.09 0.1 undecidable manual P 117 41.8248 91 -0.03 95
IV.SMA1.EHZ. 2021-07-03T08:40:51.89 0.6 undecidable manual S 140 23.754 94 -0.16 48
IV.FEMA.HNE. 2021-07-03T08:40:50.99 0.6 undecidable manual S 337 20.2686 95 -0.14 48
IV.MF5.EHZ. 2021-07-03T08:40:50.34 0.6 undecidable manual P 50 33.3444 92 0.53 44
IV.ARRO.EHZ. 2021-07-03T08:40:50.62 0.1 undecidable manual P 233 39.1275 91 -0.08 95
IV.MMO1.EHZ. 2021-07-03T08:40:50.69 0.6 undecidable manual S 51 18.7701 97 -0.04 49
IV.CSP1.EHZ. 2021-07-03T08:40:49.90 0.6 undecidable manual P 8 33.4443 92 0.08 48
IV.GUMA.HNN. 2021-07-03T08:40:49.83 0.6 undecidable manual P 27 33.5442 92 -0.01 48
IV.CAMP.HHE. 2021-07-03T08:40:49.81 0.6 undecidable manual P 143 35.742 92 -0.37 45
IV.RM33.EHZ. 2021-07-03T08:40:49.63 1.0 undecidable manual P 170 32.0457 92 0.02 24
IV.CESI.HHE. 2021-07-03T08:40:49.36 0.1 undecidable manual P 320 30.5472 92 -0.02 97
IV.GAVE.EHZ. 2021-07-03T08:40:48.27 0.1 positive manual P 241 23.4543 94 -0.01 99
IV.SMA1.EHZ. 2021-07-03T08:40:48.26 0.3 undecidable manual P 140 23.754 94 -0.07 73
IV.FDMO.HHZ. 2021-07-03T08:40:48.81 0.6 undecidable manual P 350 27.3504 93 -0.08 48
IV.T1299.HNN. 2021-07-03T08:40:48.00 0.1 undecidable manual P 148 20.868 95 0.11 97
IV.LNSS.HHZ. 2021-07-03T08:40:48.19 0.1 positive manual P 202 22.8549 94 -0.01 99
IT.MTCL.HGZ. 2021-07-03T08:40:48.46 0.6 undecidable manual P 332 25.2525 93 -0.1 48
IV.MMO1.EHZ. 2021-07-03T08:40:47.64 0.1 positive manual P 51 18.7701 97 0.07 99
IV.MTRA.EHZ. 2021-07-03T08:40:47.81 0.1 undecidable manual P 101 20.7681 95 -0.06 98
IV.FEMA.HNE. 2021-07-03T08:40:47.98 0.6 undecidable manual P 337 20.2686 95 0.18 48
IV.NRCA.HNZ. 2021-07-03T08:40:47.40 0.6 undecidable manual S 329 5.0949 149 -0.23 48
IV.NRCA.HNZ. 2021-07-03T08:40:45.89 0.1 negative manual P 329 5.0949 149 0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:2.0 0.0016365160000000002 0.1216 AML other m 2021-07-03T08:40:47.51
IV.NRCA.HNE. ML:2.0 0.0016040795000000002 0.1088 AML other m 2021-07-03T08:40:47.51
IV.NRCA.HNN. ML:1.8 0.00090459685 0.0896 AML other m 2021-07-03T08:40:47.56
IV.NRCA.HHN. ML:1.9 0.0011236201 0.1024 AML other m 2021-07-03T08:40:47.56
IV.LNSS.HHN. ML:1.6 0.000261202 0.2432 AML other m 2021-07-03T08:40:51.91
IV.SMA1.EHN. ML:1.3 0.0001164743 0.1024 AML other m 2021-07-03T08:40:52.14
IV.LNSS.HHE. ML:1.6 0.0002597399 0.16 AML other m 2021-07-03T08:40:52.21
IV.MTRA.EHN. ML:1.5 0.00019694804999999998 0.32 AML other m 2021-07-03T08:40:52.44
IV.MTRA.HNN. ML:1.5 0.00022368275 0.3072 AML other m 2021-07-03T08:40:52.44
IV.GAVE.EHN. ML:1.6 0.00025212804999999997 0.1408 AML other m 2021-07-03T08:40:52.48
IV.MTRA.EHE. ML:1.4 0.00017603975 0.1408 AML other m 2021-07-03T08:40:52.59
IV.GAVE.HNE. ML:1.7 0.00031695089999999996 0.1408 AML other m 2021-07-03T08:40:52.68
IV.LNSS.HNN. ML:1.6 0.00024447220000000004 0.16 AML other m 2021-07-03T08:40:53.08
IV.LNSS.HNE. ML:2.2 0.001104158 0.7168 AML other m 2021-07-03T08:40:52.99
IV.MTRA.HNE. ML:1.5 0.00020922754999999998 0.2624 AML other m 2021-07-03T08:40:53.54
IV.SMA1.EHE. ML:1.3 0.000119083595 0.1216 AML other m 2021-07-03T08:40:53.68
IV.GAVE.EHE. ML:1.7 0.0003125 0.9 AML other m 2021-07-03T08:40:53.90
IV.FDMO.HHE. ML:1.3 0.00010225 0.18 AML other m 2021-07-03T08:40:54.99
IV.FDMO.HHN. ML:1.3 0.00010145 0.22 AML other m 2021-07-03T08:40:54.81
IV.RM33.EHN. ML:1.1 0.00006243481 0.1216 AML other m 2021-07-03T08:40:55.20
IV.RM33.EHE. ML:1.0 0.00004371957 0.1216 AML other m 2021-07-03T08:40:55.99
IV.CSP1.EHN. ML:1.7 0.000193479075 0.1408 AML other m 2021-07-03T08:40:56.09
IV.CSP1.EHE. ML:1.6 0.00015779935 0.1408 AML other m 2021-07-03T08:40:56.33
IV.MF5.EHE. ML:1.4 0.0001104 0.62 AML other m 2021-07-03T08:40:56.80
IV.RM33.HNE. ML:1.6 0.000183549495 0.3008 AML other m 2021-07-03T08:40:56.99
IV.MF5.EHN. ML:1.3 0.000078683585 0.2432 AML other m 2021-07-03T08:40:56.81
IV.TERO.HHN. ML:1.6 0.0001245182 0.1152 AML other m 2021-07-03T08:40:57.16
IV.TERO.HNN. ML:1.6 0.00014492223499999998 0.128 AML other m 2021-07-03T08:40:57.10
IV.TERO.HHE. ML:1.4 0.00008813387 0.1408 AML other m 2021-07-03T08:40:57.10
IV.ASSB.HHE. ML:1.3 0.00004826501 0.1216 AML other m 2021-07-03T08:40:59.25
IV.MOMA.HHE. ML:1.6 0.00011595 0.2 AML other m 2021-07-03T08:41:00.13
IV.ASSB.HHN. ML:1.3 0.00005745 0.16 AML other m 2021-07-03T08:41:00.81
IV.MOMA.HHN. ML:1.3 0.000059415054999999997 0.1984 AML other m 2021-07-03T08:41:01.19
IV.CESX.HHE. ML:1.2 0.00003985 1.02 AML other m 2021-07-03T08:41:02.68
IV.MOMA.HNE. ML:1.6 0.00012105565 0.832 AML other m 2021-07-03T08:41:04.08
IV.ATCC.EHN. ML:1.3 0.00003915 0.38 AML other m 2021-07-03T08:41:05.52
IV.CESX.HHN. ML:1.1 0.00003719966 0.32 AML other m 2021-07-03T08:41:06.71
IV.ATCC.EHE. ML:1.3 0.000039699999999999996 0.48 AML other m 2021-07-03T08:41:08.12
IV.ARVD.HHE. ML:0.9 0.000009708271 0.2624 AML other m 2021-07-03T08:41:11.98
IV.ARVD.HHN. ML:0.6 0.0000064061315 0.2368 AML other m 2021-07-03T08:41:14.55
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