Earthquake with magnitude of ML 1.1 on date 24-09-2021 and time 14:19:40 (Italy) in region 2 km S Preci (PG)

A magnitude ML 1.1 earthquake occured in region: 2 km S Preci (PG), on

  • 24-09-2021 12:19:40 (UTC)
  • 24-09-2021 14:19:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.861, 13.041 at 11 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
Preci PG 2 724 724
Norcia PG 9 4957 5681
Visso MC 9 1107 6788
Sellano PG 10 1079 7867
Castelsantangelo sul Nera MC 10 281 8148
Cerreto di Spoleto PG 11 1075 9223
Ussita MC 12 444 9667
Monte Cavallo MC 15 145 9812
Cascia PG 16 3217 13029
Vallo di Nera PG 18 364 13393
Poggiodomo PG 19 117 13510
Fiordimonte MC 20 202 13712

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km E of Foligno (57155 inhabitants)
46 Km NE of Terni (111501 inhabitants)
59 Km W of Teramo (54892 inhabitants)
60 Km E of Perugia (166134 inhabitants)
64 Km NW of L'Aquila (69753 inhabitants)
91 Km NE of Viterbo (67173 inhabitants)
93 Km SW of Ancona (100861 inhabitants)
99 Km W of Montesilvano (53738 inhabitants)
99 Km N of Guidonia Montecelio (88673 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 1.1 2021-09-24
12:19:40
42.8612 13.0407 11 2021-09-24
12:25:37
Sala Sismica INGV-Roma 95830671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-24 12:19:40 ± 0.06
Latitude 42.8612 ± 0.0027
Longitude 13.0407 ± 0.0061
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95830671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 454
Semi-minor axis of confidence ellipse (meter) 309
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 87
Circular confidence region, given by single value of horizontal uncertainty (meter) 450
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 112
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.35253
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 95830671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-24 12:25:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TOLF.HHZ. 2021-09-24T12:20:03.47 3.0 undecidable manual P -0.01 0
IV.LNSS.HHE. 2021-09-24T12:19:51.19 0.6 undecidable manual S 180 0.2581 50 0.14 48
IV.MML1.EHZ. 2021-09-24T12:19:51.10 0.6 undecidable manual S 349 0.2572 50 0.08 48
IV.CSP1.EHZ. 2021-09-24T12:19:51.24 0.6 undecidable manual S 27 0.2599 50 0.13 48
IV.GAVE.EHZ. 2021-09-24T12:19:49.33 0.6 undecidable manual S 213 0.1996 50 0 50
IV.MMO1.HNE. 2021-09-24T12:19:49.66 0.6 undecidable manual S 80 0.2131 50 -0.05 49
IV.CESI.HHZ. 2021-09-24T12:19:48.61 0.6 undecidable manual S 325 0.1745 50 0.03 50
IV.FDMO.HHZ. 2021-09-24T12:19:48.61 0.6 undecidable manual S 11 0.179 50 -0.09 49
IV.SAP2.EHZ. 2021-09-24T12:19:47.94 0.1 undecidable manual P 48 0.3525 50 -0.43 88
IV.MC2.EHZ. 2021-09-24T12:19:47.06 0.6 undecidable manual S 65 0.1196 129 0.23 48
IT.MTCL.HGE. 2021-09-24T12:19:47.05 0.6 undecidable manual S 347 0.1358 126 -0.28 47
IV.CSP1.EHZ. 2021-09-24T12:19:46.96 1.0 positive manual P 27 0.2599 50 0.17 24
IV.LNSS.HHE. 2021-09-24T12:19:46.50 0.1 undecidable manual P 180 0.2581 50 -0.25 93
IV.FEMA.HNE. 2021-09-24T12:19:46.32 0.6 undecidable manual S 4 0.1016 134 0.03 50
IV.MML1.EHZ. 2021-09-24T12:19:46.84 0.1 undecidable manual P 349 0.2572 50 0.1 96
IV.CESI.HHZ. 2021-09-24T12:19:45.38 0.1 undecidable manual P 325 0.1745 50 0.05 99
IV.NRCA.HHZ. 2021-09-24T12:19:45.01 0.6 undecidable manual S 117 0.0603 148 -0.29 48
IV.FDMO.HHZ. 2021-09-24T12:19:45.57 0.3 positive manual P 11 0.179 50 0.17 72
IV.MMO1.HNE. 2021-09-24T12:19:45.94 0.1 undecidable manual P 80 0.2131 50 -0.04 98
IV.GAVE.EHZ. 2021-09-24T12:19:45.93 0.1 undecidable manual P 213 0.1996 50 0.17 96
IV.FEMA.HNE. 2021-09-24T12:19:44.28 0.3 undecidable manual P 4 0.1016 134 0.27 72
IV.MC2.EHZ. 2021-09-24T12:19:44.57 0.1 undecidable manual P 65 0.1196 129 0.25 96
IT.MTCL.HGE. 2021-09-24T12:19:44.30 0.1 undecidable manual P 347 0.1358 126 -0.31 94
IV.NRCA.HHZ. 2021-09-24T12:19:43.54 0.1 negative manual P 117 0.0603 148 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.2 0.0001125 0.22 AML other m 2021-09-24T12:19:48.75
IV.FDMO.HHN. ML:0.9 5.554199E-5 0.1792 AML other m 2021-09-24T12:19:48.72
IV.GAVE.EHE. ML:1.1 8.3856655E-5 0.2624 AML other m 2021-09-24T12:19:49.47
IV.GAVE.EHN. ML:1.1 7.275E-5 0.22 AML other m 2021-09-24T12:19:49.80
IV.NRCA.HHE. ML:1.2 0.00023778425 0.0576 AML other m 2021-09-24T12:19:45.53
IV.NRCA.HHN. ML:1.5 0.0004993651 0.16 AML other m 2021-09-24T12:19:45.05
IV.NRCA.HNE. ML:1.2 0.0002221115 0.064 AML other m 2021-09-24T12:19:45.56
IV.NRCA.HNN. ML:1.5 0.00047873375 0.1536 AML other m 2021-09-24T12:19:45.13
IV.CESI.HHE. ML:0.4 1.9291835E-5 0.1408 AML other m 2021-09-24T12:19:49.01
IV.CESI.HHN. ML:0.5 2.616133E-5 0.1152 AML other m 2021-09-24T12:19:48.81
IV.CESI.HNN. ML:1.2 0.000122187325 0.7872 AML other m 2021-09-24T12:19:48.57
IV.GAVE.HNE. ML:1.3 0.00013518547 0.544 AML other m 2021-09-24T12:19:50.80
IV.MML1.EHE. ML:0.3 9.394584E-6 0.1024 AML other m 2021-09-24T12:19:51.77
IV.MML1.EHN. ML:0.5 1.6279947E-5 0.2048 AML other m 2021-09-24T12:19:51.60
IV.MML1.HNE. ML:1.3 0.000101691 0.4992 AML other m 2021-09-24T12:19:51.43
IV.MML1.HNN. ML:1.1 6.255237E-5 1.1584 AML other m 2021-09-24T12:19:51.60
IV.CSP1.EHE. ML:1 5.4801875E-5 0.2624 AML other m 2021-09-24T12:19:51.90
IV.CSP1.EHN. ML:1.1 6.3599689E-5 0.16 AML other m 2021-09-24T12:19:51.41
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