Earthquake with magnitude of ML 1.2 on date 01-12-2021 and time 01:16:54 (UTC) in region 4 km E Preci (PG)

A magnitude ML 1.2 earthquake occured in region: 4 km E Preci (PG), on

  • 01-12-2021 01:16:54 (UTC)
  • 01-12-2021 02:16:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.871, 13.086 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 4 724 724
Castelsantangelo sul Nera MC 6 281 1005
Visso MC 7 1107 2112
Norcia PG 9 4957 7069
Ussita MC 9 444 7513
Sellano PG 13 1079 8592
Cerreto di Spoleto PG 15 1075 9667
Monte Cavallo MC 15 145 9812
Cascia PG 18 3217 13029
Bolognola MC 18 142 13171
Fiordimonte MC 19 202 13373
Acquacanina MC 19 121 13494
Fiastra MC 19 559 14053
Pieve Torina MC 20 1458 15511

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Foligno (57155 inhabitants)
50 Km NE of Terni (111501 inhabitants)
56 Km W of Teramo (54892 inhabitants)
63 Km E of Perugia (166134 inhabitants)
63 Km NW of L'Aquila (69753 inhabitants)
90 Km SW of Ancona (100861 inhabitants)
95 Km NE of Viterbo (67173 inhabitants)
96 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 1.2 2021-12-01
01:16:54
42.8713 13.0858 11 2021-12-01
01:26:24
Sala Sismica INGV-Roma 97991851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-01 01:16:54 ± 0.05
Latitude 42.8713 ± 0.0036
Longitude 13.0858 ± 0.0049
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97991851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 375
Semi-minor axis of confidence ellipse (meter) 241
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 229
Circular confidence region, given by single value of horizontal uncertainty (meter) 380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
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) 0.04317
Epicentral distance of station farthest from the epicenter (degree) 0.2707
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 97991851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-01 01:26:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LNSS.HHZ. 2021-12-01T01:17:04.96 0.3 undecidable manual S 187 0.2707 50 -0.18 69
IV.MML1.HNZ. 2021-12-01T01:17:04.63 0.3 undecidable manual S 341 0.2563 50 -0.08 71
IV.GAVE.EHZ. 2021-12-01T01:17:03.71 0.3 undecidable manual S 218 0.2275 50 -0.16 70
IV.CESI.HHZ. 2021-12-01T01:17:02.71 0.3 undecidable manual S 315 0.188 50 0.01 73
IV.MMO1.EHZ. 2021-12-01T01:17:02.13 0.3 undecidable manual S 81 0.179 50 -0.29 70
IV.FDMO.HHZ. 2021-12-01T01:17:01.87 0.3 undecidable manual S 0 0.1655 50 -0.15 72
IT.MTCL.HGZ. 2021-12-01T01:17:00.94 0.3 undecidable manual S 333 0.1376 50 -0.27 70
IV.MML1.HNZ. 2021-12-01T01:17:00.54 0.1 undecidable manual P 341 0.2563 50 0.07 95
IV.LNSS.HHZ. 2021-12-01T01:17:00.95 0.1 undecidable manual P 187 0.2707 50 0.24 92
IV.GAVE.EHZ. 2021-12-01T01:17:00.24 0.3 undecidable manual P 218 0.2275 50 0.26 69
IV.MMO1.EHZ. 2021-12-01T01:16:59.06 0.1 undecidable manual P 81 0.179 50 -0.08 97
IV.CESI.HHZ. 2021-12-01T01:16:59.36 0.1 undecidable manual P 315 0.188 50 0.05 97
IV.MC2.EHZ. 2021-12-01T01:16:59.99 0.3 undecidable manual S 62 0.0854 139 0.27 71
IV.FDMO.HHZ. 2021-12-01T01:16:59.05 0.1 undecidable manual P 0 0.1655 50 0.14 95
IV.NRCA.HHZ. 2021-12-01T01:16:58.61 0.3 undecidable manual S 151 0.0432 157 -0.24 71
IT.MTCL.HGZ. 2021-12-01T01:16:58.45 0.1 undecidable manual P 333 0.1376 50 0 98
IV.NRCA.HHZ. 2021-12-01T01:16:57.12 0.1 undecidable manual P 151 0.0432 157 0.04 100
IV.MC2.EHZ. 2021-12-01T01:16:57.77 0.1 undecidable manual P 62 0.0854 139 0.19 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0.7 3.675E-5 0.42 AML other m 2021-12-01T01:16:58.72
IV.MC2.EHE. ML:1.1 0.000149 0.66 AML other m 2021-12-01T01:17:00.07
IV.MC2.EHN. ML:1.1 0.00015875 1.5 AML other m 2021-12-01T01:17:01.85
IV.CESI.HHN. ML:0.8 4.105E-5 1.66 AML other m 2021-12-01T01:17:03.07
IV.FRON.EHN. ML:2.1 0.000201 0.6 AML other m 2021-12-01T01:17:23.31
IV.NRCA.HHE. ML:1.3 0.0003093542 0.16 AML other m 2021-12-01T01:16:58.72
IV.NRCA.HHN. ML:1.2 0.00025221805 0.08 AML other m 2021-12-01T01:16:58.72
IV.NRCA.HNE. ML:1.3 0.0002814826 0.1696 AML other m 2021-12-01T01:16:58.72
IV.NRCA.HNN. ML:1.2 0.00027561165 0.14 AML other m 2021-12-01T01:16:58.72
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