Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 24-09-2021 and time 20:35:35 (Italy) in region 3 km NE Preci (PG)

A magnitude ML 1.5 earthquake occured in region: 3 km NE Preci (PG), on

  • 24-09-2021 18:35:35 (UTC)
  • 24-09-2021 20:35:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9060, 13.0570 at 11 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
Preci PG 3 724 724
Visso MC 4 1107 1831
Ussita MC 8 444 2275
Castelsantangelo sul Nera MC 8 281 2556
Sellano PG 11 1079 3635
Monte Cavallo MC 11 145 3780
Norcia PG 13 4957 8737
Cerreto di Spoleto PG 15 1075 9812
Fiordimonte MC 15 202 10014
Pieve Torina MC 16 1458 11472
Fiastra MC 17 559 12031
Acquacanina MC 17 121 12152
Bolognola MC 17 142 12294
Pievebovigliana MC 18 866 13160
Muccia MC 20 915 14075

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km E of Foligno (57155 inhabitants)
51 Km NE of Terni (111501 inhabitants)
59 Km E of Perugia (166134 inhabitants)
60 Km W of Teramo (54892 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
95 Km NE of Viterbo (67173 inhabitants)
99 Km W of Montesilvano (53738 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 2021-09-24
18:35:35		 42.9058 13.0567 11 2022-03-30
13:04:09		 Bollettino Sismico Italiano INGV 96312961
Reviewed
Rev100 		ML 1.5 2021-09-24
18:35:35		 42.9053 13.058 11 2021-09-24
18:43:38		 Sala Sismica INGV-Roma 95842921
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-24 18:35:35 ± 0.04
Latitude 42.9058 ± 0.0018
Longitude 13.0567 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96312961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 290
Semi-minor axis of confidence ellipse (meter) 199
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 248
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 41
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 43
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.05666
Epicentral distance of station farthest from the epicenter (degree) 0.49103
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 38
Type of magnitude ML
Reference to an origin 96312961
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-18 14:10:46

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 38
Type of magnitude ML
Reference to an origin 95842921
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-24 18:43:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-09-24T18:35:51.37 0.6 undecidable manual S 4 47.1195 50 0.36 44
IV.SNTG.HHZ. 2021-09-24T18:35:49.01 0.6 undecidable manual S 346 39.8268 50 -0.06 48
IV.MF5.EHZ. 2021-09-24T18:35:48.02 0.6 undecidable manual S 74 33.9438 50 0.53 43
IV.SMA1.EHZ. 2021-09-24T18:35:48.67 0.6 undecidable manual S 143 38.0286 50 0.08 47
IV.ASSB.HHZ. 2021-09-24T18:35:47.90 1.0 undecidable manual S 295 35.6421 50 -0.05 24
IV.LNSS.HHZ. 2021-09-24T18:35:47.34 0.6 undecidable manual S 182 33.6441 50 -0.06 48
IV.GUMA.HHZ. 2021-09-24T18:35:46.32 0.6 undecidable manual S 52 28.5492 50 0.28 46
IV.MTRA.EHZ. 2021-09-24T18:35:46.82 0.6 undecidable manual S 121 32.2455 50 -0.21 47
IV.CING.HHZ. 2021-09-24T18:35:45.49 0.3 undecidable manual P 12 53.3022 50 -0.08 69
IV.GAVE.EHZ. 2021-09-24T18:35:45.75 0.6 undecidable manual S 209 27.1506 50 0.08 48
IV.MNTT.EHZ. 2021-09-24T18:35:45.34 0.3 undecidable manual P 68 47.0196 50 0.73 58
IV.TERO.HHZ. 2021-09-24T18:35:45.56 0.3 undecidable manual P 125 54.501 50 -0.2 67
IV.MML1.EHZ. 2021-09-24T18:35:44.56 0.6 undecidable manual S 343 24.0537 50 -0.28 47
IV.ATCC.EHZ. 2021-09-24T18:35:44.47 0.3 undecidable manual P 313 45.8208 50 0.04 71
IV.CSP1.EHZ. 2021-09-24T18:35:44.74 0.6 undecidable manual S 30 23.8539 50 -0.06 49
IV.RM33.EHZ. 2021-09-24T18:35:44.38 0.3 undecidable manual P 164 45.9207 50 -0.05 71
IV.EL6.EHZ. 2021-09-24T18:35:44.46 0.1 undecidable manual P 4 47.1195 50 -0.16 92
IV.ARRO.EHZ. 2021-09-24T18:35:44.22 0.3 undecidable manual P 213 43.3233 50 0.18 69
IV.MOMA.HHZ. 2021-09-24T18:35:44.01 0.3 undecidable manual P 254 41.1255 50 0.3 68
IV.SMA1.EHZ. 2021-09-24T18:35:43.09 0.3 undecidable manual P 143 38.0286 50 -0.13 70
IV.SNTG.HHZ. 2021-09-24T18:35:43.48 0.1 undecidable manual P 346 39.8268 50 -0.03 96
IV.MMO1.EHZ. 2021-09-24T18:35:43.86 0.6 undecidable manual S 92 21.9669 50 -0.43 45
IV.MF5.EHZ. 2021-09-24T18:35:42.86 0.1 undecidable manual P 74 33.9438 50 0.26 92
IV.CESI.HHZ. 2021-09-24T18:35:42.80 0.6 undecidable manual S 312 16.4724 123 0.05 50
IV.MTRA.EHZ. 2021-09-24T18:35:42.16 0.1 positive manual P 121 32.2455 50 -0.17 94
IV.LNSS.HHZ. 2021-09-24T18:35:42.43 0.1 undecidable manual P 182 33.6441 50 -0.12 95
IV.ASSB.HHZ. 2021-09-24T18:35:42.78 0.1 undecidable manual P 295 35.6421 50 -0.08 95
IV.MC2.EHZ. 2021-09-24T18:35:41.19 0.6 undecidable manual S 87 10.7781 135 -0.01 50
IV.GAVE.EHZ. 2021-09-24T18:35:41.58 0.1 undecidable manual P 209 27.1506 50 0.03 98
IV.FDMO.HHE. 2021-09-24T18:35:41.97 0.6 undecidable manual S 10 14.6742 126 -0.26 48
IV.GUMA.HHZ. 2021-09-24T18:35:41.86 0.1 undecidable manual P 52 28.5492 50 0.1 96
IT.MTCL.HGZ. 2021-09-24T18:35:40.99 0.6 undecidable manual S 335 10.7781 135 -0.21 48
IV.MMO1.EHZ. 2021-09-24T18:35:40.58 0.1 undecidable manual P 92 21.9669 50 -0.17 96
IV.FEMA.HNZ. 2021-09-24T18:35:40.20 0.6 undecidable manual S 355 6.2937 150 -0.03 51
IV.MML1.EHZ. 2021-09-24T18:35:40.93 0.1 undecidable manual P 343 24.0537 50 -0.14 96
IV.NRCA.HNZ. 2021-09-24T18:35:40.69 0.6 undecidable manual S 150 9.2796 139 -0.16 49
IV.CSP1.EHZ. 2021-09-24T18:35:40.83 0.1 undecidable manual P 30 23.8539 50 -0.21 95
IV.FDMO.HHE. 2021-09-24T18:35:39.44 0.1 undecidable manual P 10 14.6742 126 -0.12 98
IT.MTCL.HGZ. 2021-09-24T18:35:39.02 0.1 negative manual P 335 10.7781 135 0.06 100
IV.CESI.HHZ. 2021-09-24T18:35:39.98 0.1 negative manual P 312 16.4724 123 0.12 98
IV.MC2.EHZ. 2021-09-24T18:35:39.07 0.1 undecidable manual P 87 10.7781 135 0.11 99
IV.FEMA.HNZ. 2021-09-24T18:35:38.59 0.1 undecidable manual P 355 6.2937 150 0.19 98
IV.NRCA.HNZ. 2021-09-24T18:35:38.83 0.1 negative manual P 150 9.2796 139 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2.6 0.0057599999999999995 0.14 AML other m 2021-09-24T18:35:40.77
IV.NRCA.HNN. ML:2.6 0.00528 0.14 AML other m 2021-09-24T18:35:40.77
IV.NRCA.HNE. ML:2.4 0.0029 0.08 AML other m 2021-09-24T18:35:40.87
IV.NRCA.HHE. ML:2.4 0.003085 0.08 AML other m 2021-09-24T18:35:40.87
IV.CESI.HHN. ML:1.8 0.000515 1.52 AML other m 2021-09-24T18:35:42.08
IV.CESI.HHE. ML:1.6 0.00038250000000000003 0.1 AML other m 2021-09-24T18:35:42.83
IV.MML1.EHE. ML:1.5 0.00019600000000000002 0.16 AML other m 2021-09-24T18:35:45.22
IV.MML1.EHN. ML:1.5 0.000174 0.54 AML other m 2021-09-24T18:35:45.22
IV.CSP1.EHE. ML:1.5 0.000195 0.78 AML other m 2021-09-24T18:35:46.20
IV.GAVE.EHN. ML:1.4 0.0001485 0.2 AML other m 2021-09-24T18:35:46.18
IV.GUMA.HHE. ML:1.6 0.000216 0.62 AML other m 2021-09-24T18:35:46.41
IV.GAVE.EHE. ML:1.6 0.00023899999999999998 0.86 AML other m 2021-09-24T18:35:46.93
IV.CSP1.EHN. ML:1.6 0.0002575 0.16 AML other m 2021-09-24T18:35:46.77
IV.MTRA.EHE. ML:1.4 0.0001116 1.04 AML other m 2021-09-24T18:35:47.58
IV.GUMA.HHN. ML:1.5 0.0001705 0.54 AML other m 2021-09-24T18:35:47.39
IV.LNSS.HHE. ML:1.6 0.00014850000000000003 0.82 AML other m 2021-09-24T18:35:47.91
IV.LNSS.HHN. ML:1.5 0.0001325 1.86 AML other m 2021-09-24T18:35:47.05
IV.MTRA.EHN. ML:1.4 0.0001075 0.88 AML other m 2021-09-24T18:35:48.13
IV.ASSB.HHE. ML:1.4 0.00010135 0.96 AML other m 2021-09-24T18:35:48.20
IV.ASSB.HHN. ML:1.4 0.00010625000000000001 1.24 AML other m 2021-09-24T18:35:48.27
IV.SNTG.HHN. ML:1.3 0.00007515 0.38 AML other m 2021-09-24T18:35:49.69
IV.SNTG.HHE. ML:1.2 0.00006055 1.12 AML other m 2021-09-24T18:35:49.95
IV.SMA1.EHN. ML:1.3 0.00007374999999999999 0.3 AML other m 2021-09-24T18:35:50.23
IV.MOMA.HHE. ML:1.4 0.00008754999999999999 0.12 AML other m 2021-09-24T18:35:51.57
IV.SMA1.EHE. ML:1.3 0.000079 0.56 AML other m 2021-09-24T18:35:51.71
IV.MOMA.HHN. ML:1.4 0.00008434999999999999 0.14 AML other m 2021-09-24T18:35:51.73
IV.RM33.EHN. ML:1.2 0.000044999999999999996 0.56 AML other m 2021-09-24T18:35:52.28
IV.RM33.EHE. ML:1.2 0.00004625 0.18 AML other m 2021-09-24T18:35:52.09
IV.CING.HHN. ML:1.2 0.00004215 1.54 AML other m 2021-09-24T18:35:53.83
IV.ATCC.EHN. ML:1.2 0.0000429 1.2 AML other m 2021-09-24T18:35:54.71
IV.CING.HHE. ML:1.3 0.00004375 0.46 AML other m 2021-09-24T18:35:54.52
IV.ATCC.EHE. ML:1.1 0.000038150000000000006 0.98 AML other m 2021-09-24T18:35:54.64
IV.MTRA.HNN. ML:2.1 0.000628 0.98 AML other m 2021-09-24T18:35:55.87
IV.MTRA.HNE. ML:1.9 0.0003318 0.72 AML other m 2021-09-24T18:35:55.76
IV.MURB.HHE. ML:1.5 0.00006379999999999999 0.26 AML other m 2021-09-24T18:35:57.44
IV.MURB.HHN. ML:1.4 0.0000524 0.88 AML other m 2021-09-24T18:35:58.06
IV.ARVD.HHE. ML:1.2 0.00002465 0.26 AML other m 2021-09-24T18:35:58.22
IV.ARVD.HHN. ML:1.0 0.0000222 0.84 AML other m 2021-09-24T18:35:58.39
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