Earthquake with magnitude of ML 1.3 on date 28-09-2021 and time 14:04:47 (Italy) in region 7 km E Norcia (PG)

A magnitude ML 1.3 earthquake occured in region: 7 km E Norcia (PG), on

  • 28-09-2021 12:04:47 (UTC)
  • 28-09-2021 14:04:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.769, 13.176 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 7 4957 4957
Arquata del Tronto AP 10 1178 6135
Accumoli RI 10 667 6802
Castelsantangelo sul Nera MC 14 281 7083
Cascia PG 14 3217 10300
Montegallo AP 15 523 10823
Preci PG 17 724 11547
Cittareale RI 17 482 12029
Amatrice RI 18 2657 14686
Acquasanta Terme AP 19 2916 17602
Montemonaco AP 19 604 18206
Visso MC 19 1107 19313
Ussita MC 20 444 19757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Foligno (57155 inhabitants)
45 Km W of Teramo (54892 inhabitants)
49 Km E of Terni (111501 inhabitants)
50 Km NW of L'Aquila (69753 inhabitants)
74 Km SE of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
91 Km W of Pescara (121014 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km NW of Chieti (51815 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
96 Km E of Viterbo (67173 inhabitants)
98 Km S of Ancona (100861 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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
Reviewed
Rev100
ML 1.3 2021-09-28
12:04:47
42.7693 13.1765 10 2021-09-28
12:10:14
Sala Sismica INGV-Roma 95990791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-28 12:04:47 ± 0.07
Latitude 42.7693 ± 0.0027
Longitude 13.1765 ± 0.0049
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95990791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 390
Semi-minor axis of confidence ellipse (meter) 180
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 96
Circular confidence region, given by single value of horizontal uncertainty (meter) 390
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.56208
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.4
Num. used stations 24
Type of magnitude ML
Reference to an origin 95990791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-28 12:10:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ISPIC.EHZ. 2021-09-28T12:06:24.03 3.0 positive manual Pg 14.77 0
GU.LSD.HHZ. 2021-09-28T12:06:17.58 3.0 positive manual Pg 16.049999 0
AC.VLO.HHZ. 2021-09-28T12:06:12.03 3.0 undecidable manual Pg 16.690001 0
IV.CAVE.HHZ. 2021-09-28T12:06:07.06 3.0 undecidable manual Sg 6.67 0
GU.CIRO.HHZ. 2021-09-28T12:06:03.29 3.0 negative manual Pn 4.4 0
IV.FERC.HHZ.00 2021-09-28T12:06:02.94 3.0 undecidable manual Pg 11.98 0
IX.SNR3.EHZ.02 2021-09-28T12:05:52.46 3.0 undecidable manual Sg 6.44 0
IV.ZEN8.EHZ. 2021-09-28T12:05:50.56 3.0 positive manual Pg 13.98 0
IV.RIBO.EHZ.01 2021-09-28T12:05:46.22 3.0 undecidable manual Sg 10.13 0
IV.CADC.HNZ. 2021-09-28T12:05:45.20 3.0 negative manual Pg 6.87 0
IV.SENA.HHZ. 2021-09-28T12:05:45.77 3.0 positive manual Pg 6.31 0
IV.CRJA.HHZ. 2021-09-28T12:05:43.86 3.0 positive manual Pn -9.99 0
IV.QLNO.HHZ. 2021-09-28T12:05:37.88 3.0 negative manual Pn -6.22 0
OT.OT11.EHZ. 2021-09-28T12:05:36.37 3.0 undecidable manual Sg 3.4 0
IV.VULT.HHZ. 2021-09-28T12:05:22.92 3.0 positive manual Pg 4.18 0
IV.SACS.HHZ. 2021-09-28T12:05:21.54 3.0 undecidable manual Sn 1.08 0
IV.TST01.HHZ. 2021-09-28T12:05:19.27 3.0 undecidable manual Sg 2 0
IT.PLTA.HNZ. 2021-09-28T12:05:15.00 3.0 undecidable manual Sn -4.54 0
IV.EL6.EHZ. 2021-09-28T12:05:08.01 0.6 undecidable manual S 354 0.5621 50 0.69 39
IV.MCI.EHZ. 2021-09-28T12:05:03.23 3.0 negative manual Pg -0.4 0
IV.RM33.EHZ. 2021-09-28T12:04:58.14 0.3 undecidable manual S 174 0.2617 50 -0.28 69
IV.EL6.EHZ. 2021-09-28T12:04:58.93 0.1 undecidable manual P 354 0.5621 50 -0.17 89
IV.GAVE.EHZ. 2021-09-28T12:04:57.00 0.3 undecidable manual S 250 0.2212 111 0 74
IV.LNSS.HHZ. 2021-09-28T12:04:56.23 0.3 undecidable manual S 211 0.1943 114 0.19 72
IV.RNI2.HHZ. 2021-09-28T12:04:56.00 3.0 negative manual P -5.81 0
IV.MMO1.EHZ. 2021-09-28T12:04:55.00 0.3 undecidable manual S 40 0.17 117 -0.22 72
IV.MML1.EHZ. 2021-09-28T12:04:55.73 3.0 negative manual Pn -0.16 0
IV.SMA1.EHZ. 2021-09-28T12:04:55.96 0.6 undecidable manual S 140 0.1817 115 0.37 46
IV.TERO.HHZ. 2021-09-28T12:04:55.79 3.0 undecidable manual Pg 5.58 0
IV.CESI.HHZ. 2021-09-28T12:04:54.57 3.0 negative manual Pn -0.92 0
IV.MC2.EHZ. 2021-09-28T12:04:54.39 0.3 undecidable manual S 4 0.1421 121 0.12 73
IV.MF5.EHZ. 2021-09-28T12:04:54.79 3.0 negative manual Pg 2.59 0
IV.FDMO.HHZ. 2021-09-28T12:04:54.02 3.0 undecidable manual Pn -0.39 0
IV.MTRA.EHZ. 2021-09-28T12:04:54.82 0.3 undecidable manual S 94 0.1619 118 -0.11 73
IV.CSP1.EHZ. 2021-09-28T12:04:54.71 3.0 positive manual Pn 0.44 0
IV.GAVE.EHZ. 2021-09-28T12:04:53.14 1.0 positive manual P 250 0.2212 111 0 25
IV.RM33.EHZ. 2021-09-28T12:04:53.85 0.1 undecidable manual P 174 0.2617 50 -0.11 96
IV.MTRA.EHZ. 2021-09-28T12:04:52.24 0.1 undecidable manual P 94 0.1619 118 0.29 94
IV.NRCA.HHZ. 2021-09-28T12:04:52.04 0.1 undecidable manual S 325 0.0791 138 -0.32 95
IV.MMO1.EHZ. 2021-09-28T12:04:52.05 0.1 undecidable manual P 40 0.17 117 -0.06 99
IV.LNSS.HHZ. 2021-09-28T12:04:52.66 0.1 undecidable manual P 211 0.1943 114 0.07 98
IV.SMA1.EHZ. 2021-09-28T12:04:52.16 0.1 undecidable manual P 140 0.1817 115 -0.17 96
IV.MC2.EHZ. 2021-09-28T12:04:51.67 0.1 positive manual P 4 0.1421 121 0.11 98
IV.NRCA.HHZ. 2021-09-28T12:04:50.54 0.1 negative manual P 325 0.0791 138 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:1.7 0.0007495 0.06 AML other m 2021-09-28T12:04:52.23
IV.NRCA.HHE. ML:1.8 0.000812 0.08 AML other m 2021-09-28T12:04:52.23
IV.NRCA.HNN. ML:1.6 0.0005145 0.76 AML other m 2021-09-28T12:04:52.65
IV.NRCA.HHN. ML:1.5 0.0004875 0.5 AML other m 2021-09-28T12:04:52.73
IV.MTRA.EHE. ML:1.1 0.00011125 0.78 AML other m 2021-09-28T12:04:54.54
IV.MTRA.EHN. ML:1.2 0.0001465 0.22 AML other m 2021-09-28T12:04:55.25
IV.LNSS.HHE. ML:1.6 0.000291 0.38 AML other m 2021-09-28T12:04:56.45
IV.LNSS.HHN. ML:1.6 0.0002425 0.14 AML other m 2021-09-28T12:04:56.49
IV.SMA1.EHN. ML:0.9 6.725E-5 0.18 AML other m 2021-09-28T12:04:57.47
IV.GAVE.EHE. ML:1.6 0.0002185 0.2 AML other m 2021-09-28T12:04:57.65
IV.GAVE.EHN. ML:1.6 0.000215 0.2 AML other m 2021-09-28T12:04:57.67
IV.FDMO.HHN. ML:0.8 3.18E-5 0.4 AML other m 2021-09-28T12:04:58.41
IV.RM33.EHN. ML:1 5.27E-5 0.86 AML other m 2021-09-28T12:04:58.49
IV.RM33.EHE. ML:1.1 5.94E-5 1 AML other m 2021-09-28T12:04:59.02
IV.CESI.HHN. ML:1.2 5.955E-5 0.26 AML other m 2021-09-28T12:04:59.94
IV.FDMO.HHE. ML:0.9 3.27E-5 0.92 AML other m 2021-09-28T12:04:59.51
IV.CESI.HHE. ML:1 4.375E-5 1.92 AML other m 2021-09-28T12:05:00.01
IV.CSP1.EHE. ML:1.4 0.00010805 1 AML other m 2021-09-28T12:05:00.89
IV.CSP1.EHN. ML:1.5 0.000129 0.9 AML other m 2021-09-28T12:05:00.87
IV.SMA1.EHE. ML:0.9 6.29E-5 0.7 AML other m 2021-09-28T12:05:01.60
IV.MML1.EHE. ML:1.1 3.785E-5 0.6 AML other m 2021-09-28T12:05:01.65
IV.MML1.EHN. ML:1.1 3.96E-5 0.22 AML other m 2021-09-28T12:05:02.00
IV.CAVE.HHE. ML:3.6 0.0005045 0.36 AML other m 2021-09-28T12:06:07.64
IV.CAVE.HHN. ML:3.5 0.0004555 0.6 AML other m 2021-09-28T12:06:07.59
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