Earthquake with magnitude of ML 1.0 on date 08-12-2021 and time 03:49:49 (Italy) in region 8 km N Sellano (PG)

A magnitude ML 1.0 earthquake occured in region: 8 km N Sellano (PG), on

  • 08-12-2021 02:49:49 (UTC)
  • 08-12-2021 03:49:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.958, 12.904 at 9 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
Sellano PG 8 1079 1079
Monte Cavallo MC 9 145 1224
Serravalle di Chienti MC 13 1070 2294
Preci PG 14 724 3018
Cerreto di Spoleto PG 15 1075 4093
Trevi PG 15 8469 12562
Visso MC 15 1107 13669
Pieve Torina MC 16 1458 15127
Foligno PG 16 57155 72282
Valtopina PG 17 1398 73680
Fiordimonte MC 18 202 73882
Muccia MC 18 915 74797
Campello sul Clitunno PG 18 2442 77239
Pievebovigliana MC 19 866 78105
Ussita MC 19 444 78549
Spello PG 19 8645 87194
Nocera Umbra PG 20 5839 93033

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km E of Foligno (57155 inhabitants)
45 Km E of Perugia (166134 inhabitants)
49 Km NE of Terni (111501 inhabitants)
73 Km W of Teramo (54892 inhabitants)
79 Km NW of L'Aquila (69753 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
89 Km SW of Ancona (100861 inhabitants)
99 Km S of Fano (60888 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 1.0 2021-12-08
02:49:49
42.9575 12.9038 9 2021-12-08
03:04:07
Sala Sismica INGV-Roma 98266901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-08 02:49:49 ± 0.09
Latitude 42.9575 ± 0.0027
Longitude 12.9038 ± 0.0049
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98266901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 348
Semi-minor axis of confidence ellipse (meter) 220
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 92
Circular confidence region, given by single value of horizontal uncertainty (meter) 350
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.31476
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

Field Value
Value 1
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 98266901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-08 03:04:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2021-12-08T02:50:01.69 0.6 undecidable manual S 100 0.3148 50 -0.31 45
IV.CSP1.EHZ. 2021-12-08T02:50:00.20 0.6 undecidable manual S 58 0.2581 107 0.07 48
IV.GAVE.EHE. 2021-12-08T02:50:00.47 0.1 undecidable manual S 182 0.2653 107 0.06 96
IV.MC2.EHZ. 2021-12-08T02:49:58.76 0.6 undecidable manual S 102 0.214 111 0.23 47
IV.MOMA.HHZ. 2021-12-08T02:49:58.20 0.6 undecidable manual S 100
IV.NRCA.HHZ. 2021-12-08T02:49:57.71 0.6 undecidable manual S 129 0.1979 112 -0.25 47
IV.MML1.EHZ. 2021-12-08T02:49:56.92 0.6 undecidable manual S 18 0.1637 116 0.16 48
IV.MMO1.EHZ. 2021-12-08T02:49:56.83 0.6 positive manual P 100 0.3148 50 0.01 48
IV.FDMO.HHZ. 2021-12-08T02:49:56.55 0.6 undecidable manual S 59 0.1556 117 0.07 49
IV.CSP1.EHZ. 2021-12-08T02:49:55.66 0.6 negative manual P 58 0.2581 107 -0.08 48
IV.GAVE.EHE. 2021-12-08T02:49:55.88 0.3 undecidable manual P 182 0.2653 107 -0.02 73
IV.FEMA.HNZ. 2021-12-08T02:49:55.01 0.6 undecidable manual S 87 0.107 127 0.12 49
IV.MC2.EHZ. 2021-12-08T02:49:54.87 1.0 negative manual P 102 0.214 111 0.06 24
IV.NRCA.HHZ. 2021-12-08T02:49:54.40 0.3 positive manual P 129 0.1979 112 -0.08 73
IV.ASSB.HHZ. 2021-12-08T02:49:54.84 0.6 undecidable manual P 295 0.1988 112 0.35 46
IV.FDMO.HHZ. 2021-12-08T02:49:53.66 0.3 positive manual P 59 0.1556 117 0.03 74
IV.MML1.EHZ. 2021-12-08T02:49:53.78 0.6 undecidable manual P 18 0.1637 116 -0.01 50
IV.FEMA.HNZ. 2021-12-08T02:49:52.92 0.1 undecidable manual P 87 0.107 127 0.21 96
IV.CESI.HHZ. 2021-12-08T02:49:52.78 0.6 undecidable manual S 1 0.0477 149 -0.55 45
IT.MTCL.HGZ. 2021-12-08T02:49:52.18 0.1 undecidable manual P 62 0.0791 136 -0.06 100
IV.CESI.HHZ. 2021-12-08T02:49:51.71 0.1 positive manual P 1 0.0477 149 -0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1 7.705E-5 0.12 AML other m 2021-12-08T02:49:58.10
IV.NRCA.HHE. ML:1 7.365E-5 0.16 AML other m 2021-12-08T02:49:58.05
IV.CSP1.EHE. ML:1.3 9.6665E-5 1.02 AML other m 2021-12-08T02:50:00.26
IV.CSP1.EHN. ML:1.3 0.00010185 1.22 AML other m 2021-12-08T02:50:01.79
IV.ASSB.HHN. ML:0.7 3.565E-5 0.44 AML other m 2021-12-08T02:50:01.37
IV.ASSB.HHE. ML:0.8 3.82E-5 1.42 AML other m 2021-12-08T02:50:06.27
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