Earthquake with magnitude of ML 1.2 on date 14-09-2021 and time 08:31:42 (Italy) in region 5 km W Preci (PG)

A magnitude ML 1.2 earthquake occured in region: 5 km W Preci (PG), on

  • 14-09-2021 06:31:42 (UTC)
  • 14-09-2021 08:31:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.86, 12.987 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 5 724 724
Sellano PG 6 1079 1803
Cerreto di Spoleto PG 7 1075 2878
Norcia PG 12 4957 7835
Visso MC 12 1107 8942
Vallo di Nera PG 14 364 9306
Castelsantangelo sul Nera MC 14 281 9587
Monte Cavallo MC 15 145 9732
Ussita MC 16 444 10176
Cascia PG 16 3217 13393
Poggiodomo PG 17 117 13510
Campello sul Clitunno PG 18 2442 15952
Sant'Anatolia di Narco PG 19 564 16516
Trevi PG 20 8469 24985

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
56 Km E of Perugia (166134 inhabitants)
63 Km W of Teramo (54892 inhabitants)
66 Km NW of L'Aquila (69753 inhabitants)
87 Km NE of Viterbo (67173 inhabitants)
95 Km SW of Ancona (100861 inhabitants)
98 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 1.2 2021-09-14
06:31:42
42.8602 12.987 11 2021-09-14
06:41:49
Sala Sismica INGV-Roma 95409971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-14 06:31:42 ± 0.06
Latitude 42.8602 ± 0.0027
Longitude 12.9870 ± 0.0049
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 95409971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 363
Semi-minor axis of confidence ellipse (meter) 274
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 79
Circular confidence region, given by single value of horizontal uncertainty (meter) 360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.30127
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:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 95409971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-14 06:41:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ATPI.EHZ. 2021-09-14T06:31:55.46 3.0 positive manual P -0.66 0
IV.CSP1.EHZ. 2021-09-14T06:31:53.30 0.3 undecidable manual S 34 0.2815 50 0.24 69
IV.ASSB.HHZ. 2021-09-14T06:31:53.59 0.3 undecidable manual S 307 0.3013 50 -0.07 71
IV.MML1.EHZ. 2021-09-14T06:31:52.23 0.6 undecidable manual S 357 0.2536 50 -0.01 49
IV.LNSS.HHZ. 2021-09-14T06:31:52.26 0.6 undecidable manual S 171 0.2599 50 -0.17 47
IV.MMO1.EHZ. 2021-09-14T06:31:52.04 0.6 undecidable manual S 81 0.2518 50 -0.16 47
IV.FDMO.HHN. 2021-09-14T06:31:50.28 0.6 undecidable manual S 23 0.1907 50 -0.11 48
IV.GAVE.EHZ. 2021-09-14T06:31:50.08 0.6 undecidable manual S 202 0.1808 50 -0.01 49
IV.MC2.EHZ. 2021-09-14T06:31:49.47 0.6 undecidable manual S 71 0.1565 50 0.1 49
IV.CESI.HHZ. 2021-09-14T06:31:49.29 0.6 undecidable manual S 337 0.1565 50 -0.09 49
IV.LNSS.HHZ. 2021-09-14T06:31:48.26 0.3 undecidable manual P 171 0.2599 50 0.12 71
IT.MTCL.HGE. 2021-09-14T06:31:48.26 0.3 undecidable manual S 4 0.134 127 -0.44 68
IV.ASSB.HHZ. 2021-09-14T06:31:48.74 0.6 undecidable manual P 307 0.3013 50 -0.11 47
IV.MML1.EHZ. 2021-09-14T06:31:48.12 1.0 undecidable manual P 357 0.2536 50 0.09 24
IV.CSP1.EHZ. 2021-09-14T06:31:48.21 0.6 positive manual P 34 0.2815 50 -0.29 46
IV.NRCA.HHZ. 2021-09-14T06:31:47.35 0.6 undecidable manual S 106 0.0971 136 -0.27 47
IV.MMO1.EHZ. 2021-09-14T06:31:47.92 0.1 undecidable manual P 81 0.2518 50 -0.08 96
IV.FEMA.HNE. 2021-09-14T06:31:47.99 0.3 undecidable manual S 24 0.1115 132 -0.05 74
IV.GAVE.EHZ. 2021-09-14T06:31:46.84 0.3 positive manual P 202 0.1808 50 0.05 73
IV.CESI.HHZ. 2021-09-14T06:31:46.38 0.1 undecidable manual P 337 0.1565 50 0.01 99
IT.MTCL.HGE. 2021-09-14T06:31:46.33 0.1 undecidable manual P 4 0.134 127 0.35 93
IV.MC2.EHZ. 2021-09-14T06:31:46.46 0.1 undecidable manual P 71 0.1565 50 0.09 97
IV.FDMO.HHN. 2021-09-14T06:31:46.92 0.1 undecidable manual P 23 0.1907 50 -0.04 98
IV.NRCA.HHZ. 2021-09-14T06:31:45.35 0.1 undecidable manual P 106 0.0971 136 -0.01 100
IV.FEMA.HNE. 2021-09-14T06:31:45.90 0.1 undecidable manual P 24 0.1115 132 0.3 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.6 0.0004345 0.08 AML other m 2021-09-14T06:31:47.53
IV.NRCA.HNN. ML:1.5 0.0003915 0.08 AML other m 2021-09-14T06:31:47.53
IV.NRCA.HNE. ML:1.5 0.0003455 0.4 AML other m 2021-09-14T06:31:47.58
IV.NRCA.HHE. ML:1.5 0.000387 0.08 AML other m 2021-09-14T06:31:47.58
IV.GAVE.EHN. ML:1.2 0.00012035 0.16 AML other m 2021-09-14T06:31:50.22
IV.GAVE.EHE. ML:1.5 0.0002105 0.14 AML other m 2021-09-14T06:31:50.21
IV.MML1.EHN. ML:0.9 4.045E-5 0.18 AML other m 2021-09-14T06:31:52.67
IV.MML1.EHE. ML:1 4.285E-5 0.24 AML other m 2021-09-14T06:31:52.82
IV.LNSS.HHN. ML:1 5.085E-5 0.18 AML other m 2021-09-14T06:31:52.68
IV.LNSS.HHE. ML:1.1 6.015E-5 1.24 AML other m 2021-09-14T06:31:53.02
IV.ASSB.HHE. ML:0.8 2.785E-5 1.52 AML other m 2021-09-14T06:31:53.80
IV.ASSB.HHN. ML:0.8 2.535E-5 0.24 AML other m 2021-09-14T06:31:55.28
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