Earthquake with magnitude of ML 1.6 on date 27-09-2021 and time 03:24:12 (Italy) in region 5 km SE Scheggino (PG)

A magnitude ML 1.6 earthquake occured in region: 5 km SE Scheggino (PG), on

  • 27-09-2021 01:24:12 (UTC)
  • 27-09-2021 03:24:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.682, 12.877 at 13 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
Scheggino PG 5 461 461
Poggiodomo PG 6 117 578
Sant'Anatolia di Narco PG 7 564 1142
Monteleone di Spoleto PG 7 599 1741
Ferentillo TR 10 1913 3654
Vallo di Nera PG 10 364 4018
Polino TR 11 233 4251
Cascia PG 12 3217 7468
Spoleto PG 13 38218 45686
Montefranco TR 13 1276 46962
Arrone TR 14 2763 49725
Leonessa RI 15 2435 52160
Cerreto di Spoleto PG 16 1075 53235
Campello sul Clitunno PG 18 2442 55677
Morro Reatino RI 18 373 56050
Labro RI 18 374 56424
Rivodutri RI 18 1253 57677
Poggio Bustone RI 20 2055 59732

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NE of Terni (111501 inhabitants)
34 Km SE of Foligno (57155 inhabitants)
56 Km NW of L'Aquila (69753 inhabitants)
62 Km SE of Perugia (166134 inhabitants)
68 Km W of Teramo (54892 inhabitants)
70 Km E of Viterbo (67173 inhabitants)
77 Km N of Guidonia Montecelio (88673 inhabitants)
80 Km N of Tivoli (56533 inhabitants)
93 Km NE of Roma (2864731 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 1.6 2021-09-27
01:24:12
42.6815 12.8773 13 2021-09-27
01:49:25
Sala Sismica INGV-Roma 95924721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-27 01:24:12 ± 0.05
Latitude 42.6815 ± 0.0027
Longitude 12.8773 ± 0.0024
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95924721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 299
Semi-minor axis of confidence ellipse (meter) 60
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 346
Circular confidence region, given by single value of horizontal uncertainty (meter) 300
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 94
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.3948
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 95924721
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-27 01:49:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SRES.HHZ. 2021-09-27T01:24:32.16 3.0 undecidable manual S 0.37 0
IV.CSP1.EHZ. 2021-09-27T01:24:30.45 3.0 undecidable manual S 0.01 0
IV.MMO1.EHZ. 2021-09-27T01:24:27.25 0.6 undecidable manual S 56 0.3948 94 0.19 45
IV.MNTT.EHZ. 2021-09-27T01:24:26.32 3.0 positive manual P 0.6 0
IV.SMA1.EHZ. 2021-09-27T01:24:25.84 0.6 undecidable manual S 98 0.3408 95 0.39 44
IV.MGAB.HHZ. 2021-09-27T01:24:25.07 3.0 undecidable manual P -0.08 0
IV.RM33.EHZ. 2021-09-27T01:24:24.48 0.3 undecidable manual S 125 0.3022 96 0.16 69
IV.CESI.HHZ. 2021-09-27T01:24:24.97 0.6 undecidable manual S 4 0.3238 95 0.01 47
IV.MOMA.HHZ. 2021-09-27T01:24:23.01 0.3 undecidable manual S 299 0.2563 98 0.03 72
IV.TERO.HHZ. 2021-09-27T01:24:23.22 3.0 undecidable manual P -0.36 0
IV.CSP1.EHZ. 2021-09-27T01:24:22.31 3.0 undecidable manual P -0.28 0
IV.NRCA.HHZ. 2021-09-27T01:24:21.96 0.3 undecidable manual S 49 0.2311 100 -0.27 69
IV.MMO1.EHZ. 2021-09-27T01:24:21.12 0.6 undecidable manual P 56 0.3948 94 0.05 47
IV.FIAM.HHZ. 2021-09-27T01:24:21.93 3.0 undecidable manual P 0 0
IV.ASSB.HHZ. 2021-09-27T01:24:21.06 3.0 positive manual P -0.19 0
IV.CESX.HHZ. 2021-09-27T01:24:21.86 0.6 undecidable manual S 251 0.2257 100 -0.22 47
IV.SMA1.EHZ. 2021-09-27T01:24:20.25 0.6 undecidable manual P 98 0.3408 95 0.11 46
IV.CESI.HHZ. 2021-09-27T01:24:19.84 0.6 undecidable manual P 4 0.3238 95 -0.01 47
IV.ARRO.EHZ. 2021-09-27T01:24:19.35 0.3 undecidable manual S 219 0.1313 117 -0.05 74
IV.LNSS.HHZ. 2021-09-27T01:24:19.65 0.3 undecidable manual S 123 0.143 114 -0.08 73
IV.RM33.EHZ. 2021-09-27T01:24:19.37 0.3 negative manual P 125 0.3022 96 -0.11 71
IV.NRCA.HHZ. 2021-09-27T01:24:18.15 0.1 negative manual P 49 0.2311 100 -0.13 95
IV.MOMA.HHZ. 2021-09-27T01:24:18.97 0.1 negative manual P 299 0.2563 98 0.26 92
IV.GAVE.EHZ. 2021-09-27T01:24:17.35 0.3 undecidable manual S 49 0.0162 170 0 76
IV.CESX.HHZ. 2021-09-27T01:24:17.99 0.6 negative manual P 251 0.2257 100 -0.2 47
IV.ARRO.EHZ. 2021-09-27T01:24:16.66 0.1 negative manual P 219 0.1313 117 0.01 99
IV.LNSS.HHZ. 2021-09-27T01:24:16.78 0.1 positive manual P 123 0.143 114 -0.05 98
IV.GAVE.EHZ. 2021-09-27T01:24:15.52 0.1 undecidable manual P 49 0.0162 170 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.HNN. ML:1.3 0.000291 0.14 AML other m 2021-09-27T01:24:17.38
IV.GAVE.HNE. ML:2.1 0.001595 0.14 AML other m 2021-09-27T01:24:17.30
IV.GAVE.EHE. ML:2.1 0.00169 0.14 AML other m 2021-09-27T01:24:17.30
IV.GAVE.EHN. ML:1.8 0.0009135 0.22 AML other m 2021-09-27T01:24:17.38
IV.ARRO.EHE. ML:1.7 0.000389 0.18 AML other m 2021-09-27T01:24:19.52
IV.ARRO.EHN. ML:1.5 0.000296 0.14 AML other m 2021-09-27T01:24:19.71
IV.LNSS.HHN. ML:1.8 0.0004895 0.84 AML other m 2021-09-27T01:24:19.86
IV.LNSS.HHE. ML:1.8 0.0004815 0.1 AML other m 2021-09-27T01:24:20.24
IV.CESX.HHE. ML:1.3 0.00010145 1.26 AML other m 2021-09-27T01:24:22.03
IV.NRCA.HHE. ML:1.7 0.0002975 0.14 AML other m 2021-09-27T01:24:22.32
IV.CESX.HHN. ML:1.4 0.0001235 0.96 AML other m 2021-09-27T01:24:22.03
IV.NRCA.HHN. ML:1.5 0.0001745 0.44 AML other m 2021-09-27T01:24:23.37
IV.MOMA.HHN. ML:1.6 0.000196 0.22 AML other m 2021-09-27T01:24:23.37
IV.MOMA.HHE. ML:1.6 0.000175 1.34 AML other m 2021-09-27T01:24:24.20
IV.CESI.HHN. ML:1.4 9.835E-5 0.32 AML other m 2021-09-27T01:24:25.39
IV.CESI.HHE. ML:1.4 8.365E-5 0.32 AML other m 2021-09-27T01:24:25.62
IV.RM33.EHN. ML:1.6 0.000148 0.88 AML other m 2021-09-27T01:24:26.44
IV.RM33.EHE. ML:1.4 9.725E-5 1.4 AML other m 2021-09-27T01:24:26.18
IV.SMA1.EHE. ML:2 0.000387 0.18 AML other m 2021-09-27T01:24:26.84
IV.SMA1.EHN. ML:1.7 0.000183 1.04 AML other m 2021-09-27T01:24:26.38
IV.ASSB.HHE. ML:1.2 4.43E-5 0.92 AML other m 2021-09-27T01:24:27.30
IV.ASSB.HHN. ML:1.2 5.055E-5 0.16 AML other m 2021-09-27T01:24:27.94
IV.TERO.HHN. ML:1.2 3.44E-5 0.1 AML other m 2021-09-27T01:24:31.72
IV.MGAB.HHN. ML:1.5 5.36E-5 0.68 AML other m 2021-09-27T01:24:34.42
IV.MGAB.HHE. ML:1.5 5.47E-5 0.54 AML other m 2021-09-27T01:24:36.03
IV.TERO.HHE. ML:2.1 0.0002422 1.44 AML other m 2021-09-27T01:24:38.21
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