Earthquake with magnitude of ML 1.0 on date 07-12-2021 and time 21:51:56 (Italy) in region 4 km E Campello sul Clitunno (PG)

A magnitude ML 1.0 earthquake occured in region: 4 km E Campello sul Clitunno (PG), on

  • 07-12-2021 20:51:56 (UTC)
  • 07-12-2021 21:51:56 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.806, 12.82 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
Campello sul Clitunno PG 4 2442 2442
Vallo di Nera PG 5 364 2806
Cerreto di Spoleto PG 8 1075 3881
Sant'Anatolia di Narco PG 8 564 4445
Trevi PG 10 8469 12914
Spoleto PG 10 38218 51132
Scheggino PG 10 461 51593
Castel Ritaldi PG 12 3278 54871
Sellano PG 13 1079 55950
Poggiodomo PG 14 117 56067
Montefalco PG 17 5679 61746
Cascia PG 19 3217 64963
Foligno PG 19 57155 122118
Preci PG 20 724 122842

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km SE of Foligno (57155 inhabitants)
31 Km NE of Terni (111501 inhabitants)
49 Km SE of Perugia (166134 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
73 Km NE of Viterbo (67173 inhabitants)
74 Km W of Teramo (54892 inhabitants)
90 Km N of Guidonia Montecelio (88673 inhabitants)
94 Km N of Tivoli (56533 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 2021-12-07
20:51:56
42.8063 12.8205 11 2021-12-07
21:01:10
Sala Sismica INGV-Roma 98255161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-07 20:51:56 ± 0.09
Latitude 42.8063 ± 0.0045
Longitude 12.8205 ± 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 98255161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 433
Semi-minor axis of confidence ellipse (meter) 424
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 85
Circular confidence region, given by single value of horizontal uncertainty (meter) 430
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
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) 0.12591
Epicentral distance of station farthest from the epicenter (degree) 0.30217
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 98255161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-07 21:01:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2021-12-07T20:52:07.83 0.3 undecidable manual S 40 0.3022 50 0.14 72
IV.LNSS.HNZ. 2021-12-07T20:52:06.55 0.3 undecidable manual S 141 0.2599 50 0.11 73
IV.ASSB.HHN. 2021-12-07T20:52:06.50 0.3 undecidable manual S 333 0.2644 50 -0.08 73
IV.CESI.HHZ. 2021-12-07T20:52:05.08 0.3 undecidable manual S 17 0.2077 50 0.17 73
IV.NRCA.HHZ. 2021-12-07T20:52:05.05 0.3 undecidable manual S 83 0.2167 50 -0.13 73
IV.MOMA.HHZ. 2021-12-07T20:52:04.27 0.6 undecidable manual S 269 0.1835 50 0.09 49
IV.GAVE.EHZ. 2021-12-07T20:52:02.43 0.3 undecidable manual S 155 0.1259 128 -0.05 75
IV.FDMO.HHZ. 2021-12-07T20:52:02.86 0.3 undecidable manual P 40 0.3022 50 -0.01 74
IV.NRCA.HHZ. 2021-12-07T20:52:01.42 0.1 undecidable manual P 83 0.2167 50 0 100
IV.ASSB.HHN. 2021-12-07T20:52:01.79 0.3 undecidable manual P 333 0.2644 50 -0.44 68
IV.MOMA.HHZ. 2021-12-07T20:52:01.12 0.6 undecidable manual P 269 0.1835 50 0.27 48
IV.CESI.HHZ. 2021-12-07T20:52:01.36 0.3 undecidable manual P 17 0.2077 50 0.09 74
IV.LNSS.HNZ. 2021-12-07T20:52:01.78 0.6 undecidable manual P 141 0.2599 50 -0.37 46
IV.GAVE.EHZ. 2021-12-07T20:52:00.04 0.3 undecidable manual P 155 0.1259 128 0.17 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:1 9.84E-5 0.44 AML other m 2021-12-07T20:52:02.61
IV.GAVE.EHN. ML:1.1 0.00011575 0.38 AML other m 2021-12-07T20:52:02.72
IV.MOMA.HHE. ML:0.4 1.90005515E-5 0.1792 AML other m 2021-12-07T20:52:05.27
IV.MOMA.HHN. ML:0.3 1.5189102E-5 0.192 AML other m 2021-12-07T20:52:04.83
IV.MOMA.HNE. ML:1 7.441975E-5 1.088 AML other m 2021-12-07T20:52:04.14
IV.MOMA.HNN. ML:1.3 0.0001361346 1.3824 AML other m 2021-12-07T20:52:04.14
IV.CESI.HNE. ML:1.2 9.759052E-5 0.704 AML other m 2021-12-07T20:52:05.84
IV.CESI.HNN. ML:1.3 0.00012866937 1.4848 AML other m 2021-12-07T20:52:05.48
IV.CESI.HHE. ML:0.9 4.8284185E-5 1.7152 AML other m 2021-12-07T20:52:05.73
IV.CESI.HHN. ML:0.9 4.8825555E-5 0.2304 AML other m 2021-12-07T20:52:05.18
IV.NRCA.HHE. ML:0.7 3.185888E-5 0.0768 AML other m 2021-12-07T20:52:05.18
IV.NRCA.HHN. ML:1 6.646208E-5 0.0896 AML other m 2021-12-07T20:52:05.16
IV.NRCA.HNE. ML:1.3 0.000113384305 0.6656 AML other m 2021-12-07T20:52:04.52
IV.NRCA.HNN. ML:1.6 0.00022553385 1.088 AML other m 2021-12-07T20:52:03.53
IV.FDMO.HHE. ML:0.9 3.625829E-5 2.1632 AML other m 2021-12-07T20:52:08.46
IV.FDMO.HHN. ML:0.6 1.3535181E-5 0 AML other m 2021-12-07T20:52:08.24
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