Earthquake with magnitude of ML 1.4 on date 05-12-2021 and time 08:12:40 (UTC) in region 3 km S Preci (PG)

A magnitude ML 1.4 earthquake occured in region: 3 km S Preci (PG), on

  • 05-12-2021 08:12:40 (UTC)
  • 05-12-2021 09:12:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.853, 13.035 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
Preci PG 3 724 724
Norcia PG 8 4957 5681
Sellano PG 10 1079 6760
Visso MC 10 1107 7867
Cerreto di Spoleto PG 10 1075 8942
Castelsantangelo sul Nera MC 11 281 9223
Ussita MC 13 444 9667
Cascia PG 15 3217 12884
Monte Cavallo MC 16 145 13029
Vallo di Nera PG 17 364 13393
Poggiodomo PG 18 117 13510

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km E of Foligno (57155 inhabitants)
45 Km NE of Terni (111501 inhabitants)
59 Km W of Teramo (54892 inhabitants)
60 Km E of Perugia (166134 inhabitants)
63 Km NW of L'Aquila (69753 inhabitants)
90 Km NE of Viterbo (67173 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
98 Km N of Guidonia Montecelio (88673 inhabitants)
99 Km W of Montesilvano (53738 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.4 2021-12-05
08:12:40
42.8527 13.035 10 2021-12-05
08:30:17
Sala Sismica INGV-Roma 98168801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-05 08:12:40 ± 0.08
Latitude 42.8527 ± 0.0045
Longitude 13.0350 ± 0.0074
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 98168801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 582
Semi-minor axis of confidence ellipse (meter) 283
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 88
Circular confidence region, given by single value of horizontal uncertainty (meter) 580
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.06115
Epicentral distance of station farthest from the epicenter (degree) 0.33455
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 98168801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-05 08:30:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-12-05T08:12:51.31 0.6 undecidable manual S 27 0.2689 50 -0.25 47
IV.FDMO.HHZ. 2021-12-05T08:12:48.62 0.6 undecidable manual S 12 0.188 116 -0.27 47
IV.GAVE.EHZ. 2021-12-05T08:12:48.60 0.6 undecidable manual S 213 0.1907 115 -0.4 46
IV.CESI.HHZ. 2021-12-05T08:12:48.56 0.6 undecidable manual S 328 0.1799 117 -0.05 49
IV.MC2.EHZ. 2021-12-05T08:12:47.05 0.6 undecidable manual S 62 0.1268 125 0.17 49
IV.MML1.EHZ. 2021-12-05T08:12:47.59 0.3 undecidable manual P 350 0.2644 50 0.62 63
IV.MTRA.EHE. 2021-12-05T08:12:47.10 0.3 undecidable manual P 110 0.2824 50 -0.16 71
IT.MTCL.HGZ. 2021-12-05T08:12:47.18 0.6 undecidable manual S 350 0.1439 122 -0.22 48
IV.ASSB.HHZ. 2021-12-05T08:12:47.97 0.3 undecidable manual P 305 0.3345 50 -0.19 70
IV.CSP1.EHZ. 2021-12-05T08:12:46.87 0.1 undecidable manual P 27 0.2689 50 -0.18 95
IV.LNSS.HHE. 2021-12-05T08:12:46.76 0.3 undecidable manual P 179 0.25 50 0.05 73
IV.CESI.HHZ. 2021-12-05T08:12:45.40 0.3 undecidable manual P 328 0.1799 117 0.06 74
IV.FDMO.HHZ. 2021-12-05T08:12:45.45 0.3 undecidable manual P 12 0.188 116 -0.06 74
IT.MTCL.HGZ. 2021-12-05T08:12:45.06 0.1 undecidable manual P 350 0.1439 122 0.42 92
IV.GAVE.EHZ. 2021-12-05T08:12:45.76 0.3 undecidable manual P 213 0.1907 115 0.19 72
IV.MC2.EHZ. 2021-12-05T08:12:44.56 0.3 undecidable manual P 62 0.1268 125 0.22 72
IV.NRCA.HHZ. 2021-12-05T08:12:44.96 0.1 undecidable manual S 108 0.0612 146 -0.11 100
IV.NRCA.HHZ. 2021-12-05T08:12:43.47 0.3 undecidable manual P 108 0.0612 146 0.17 74
IV.FEMA.HNZ. 2021-12-05T08:12:43.69 0.3 undecidable manual P 6 0.1097 129 -0.35 71
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:1.4 0.0004255 1.18 AML other m 2021-12-05T08:12:45.05
IV.NRCA.HHN. ML:1.5 0.0004805 0.18 AML other m 2021-12-05T08:12:45.05
IV.NRCA.HHE. ML:1.6 0.0006625 0.64 AML other m 2021-12-05T08:12:45.06
IV.NRCA.HNE. ML:1.6 0.0006395 0.64 AML other m 2021-12-05T08:12:45.06
IV.MC2.EHE. ML:1.2 0.00017 1.46 AML other m 2021-12-05T08:12:47.91
IV.MC2.EHN. ML:1.5 0.0003085 0.2 AML other m 2021-12-05T08:12:48.66
IV.GAVE.EHN. ML:1.1 7.77E-5 0.28 AML other m 2021-12-05T08:12:49.45
IV.GAVE.EHE. ML:1.3 0.0001455 1.18 AML other m 2021-12-05T08:12:49.29
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