Earthquake with magnitude of ML 1.0 on date 18-11-2021 and time 05:14:28 (Italy) in region 4 km NW Sellano (PG)

A magnitude ML 1.0 earthquake occured in region: 4 km NW Sellano (PG), on

  • 18-11-2021 04:14:28 (UTC)
  • 18-11-2021 05:14:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.921, 12.902 at 12 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 4 1079 1079
Cerreto di Spoleto PG 11 1075 2154
Monte Cavallo MC 12 145 2299
Preci PG 12 724 3023
Trevi PG 13 8469 11492
Campello sul Clitunno PG 15 2442 13934
Visso MC 15 1107 15041
Foligno PG 17 57155 72196
Vallo di Nera PG 17 364 72560
Serravalle di Chienti MC 17 1070 73630
Pieve Torina MC 18 1458 75088
Valtopina PG 20 1398 76486
Ussita MC 20 444 76930

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km E of Foligno (57155 inhabitants)
45 Km NE of Terni (111501 inhabitants)
47 Km E of Perugia (166134 inhabitants)
72 Km W of Teramo (54892 inhabitants)
75 Km NW of L'Aquila (69753 inhabitants)
86 Km NE of Viterbo (67173 inhabitants)
92 Km SW of Ancona (100861 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 2021-11-18
04:14:28
42.9212 12.902 12 2021-11-18
04:27:06
Sala Sismica INGV-Roma 97540121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-18 04:14:28 ± 0.05
Latitude 42.9212 ± 0.0018
Longitude 12.9020 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97540121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 262
Semi-minor axis of confidence ellipse (meter) 194
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) 260
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.08364
Epicentral distance of station farthest from the epicenter (degree) 0.43347
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 97540121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-18 04:27:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GAVE.EHZ. 2021-11-18T04:14:37.51 0.3 undecidable manual S 181 0.2284 93 0 97
IV.EL6.EHZ. 2021-11-18T04:14:37.14 0.3 undecidable manual P 20 0.4335 91 0.04 93
IV.MML1.EHZ. 2021-11-18T04:14:36.76 0.3 undecidable manual S 15 0.1988 95 0.13 95
IV.ASSB.HHZ. 2021-11-18T04:14:36.93 0.3 undecidable manual S 304 0.2149 94 -0.18 96
IV.SNTG.HHZ. 2021-11-18T04:14:35.15 0.3 undecidable manual P 5 0.3345 92 -0.27 91
IV.NRCA.HHZ. 2021-11-18T04:14:35.93 0.3 undecidable manual S 119 0.1781 96 -0.09 96
IV.FDMO.HHZ. 2021-11-18T04:14:35.85 0.3 undecidable manual S 50 0.1781 96 -0.16 96
IV.MOMA.HHZ. 2021-11-18T04:14:34.39 0.3 undecidable manual P 244 0.2698 92 0.09 95
IV.CSP1.EHZ. 2021-11-18T04:14:34.48 0.3 undecidable manual P 52 0.2797 92 0.01 97
IV.MC2.EHZ. 2021-11-18T04:14:33.42 0.3 undecidable manual P 93 0.2104 94 0.13 96
IV.CESI.HHZ. 2021-11-18T04:14:33.43 0.3 undecidable manual S 1 0.0836 128 0.03 100
IV.MML1.EHZ. 2021-11-18T04:14:33.12 0.3 undecidable manual P 15 0.1988 95 0.03 98
IT.MTCL.HGZ. 2021-11-18T04:14:33.75 0.3 undecidable manual S 44 0.1016 119 -0.09 98
IV.ASSB.HHZ. 2021-11-18T04:14:33.24 0.3 undecidable manual P 304 0.2149 94 -0.13 96
IV.GAVE.EHZ. 2021-11-18T04:14:33.57 0.3 undecidable manual P 181 0.2284 93 -0.03 97
IV.FDMO.HHZ. 2021-11-18T04:14:32.73 0.3 undecidable manual P 50 0.1781 96 -0.01 99
IV.NRCA.HHZ. 2021-11-18T04:14:32.69 0.3 undecidable manual P 119 0.1781 96 -0.05 97
IV.FEMA.HNZ. 2021-11-18T04:14:31.91 0.3 undecidable manual P 69 0.116 113 0.21 96
IV.CESI.HHZ. 2021-11-18T04:14:31.41 0.3 undecidable manual P 1 0.0836 128 0.18 97
IT.MTCL.HGZ. 2021-11-18T04:14:31.59 0.3 undecidable manual P 44 0.1016 119 0.1 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.4 0.000282 0.08 AML other m 2021-11-18T04:14:33.64
IV.CESI.HHE. ML:1.3 0.0002485 0.08 AML other m 2021-11-18T04:14:33.60
IV.MML1.EHN. ML:0.9 5.675E-5 0.24 AML other m 2021-11-18T04:14:36.98
IV.MML1.EHE. ML:1.2 9.885E-5 0.16 AML other m 2021-11-18T04:14:36.99
IV.GAVE.EHE. ML:1.1 7.4537615E-5 0.16 AML other m 2021-11-18T04:14:39.03
IV.GAVE.EHN. ML:1.2 7.7582795E-5 0.1408 AML other m 2021-11-18T04:14:37.83
IV.CESI.HNE. ML:1.2 0.000205982 0.0608 AML other m 2021-11-18T04:14:33.60
IV.CESI.HNN. ML:1.4 0.0002663788 0.0896 AML other m 2021-11-18T04:14:33.60
IV.NRCA.HHE. ML:1 6.397233E-5 0.0992 AML other m 2021-11-18T04:14:36.44
IV.NRCA.HHN. ML:1 7.3629635E-5 0.1408 AML other m 2021-11-18T04:14:36.00
IV.FDMO.HHE. ML:0.5 2.4752275E-5 0.1184 AML other m 2021-11-18T04:14:36.49
IV.FDMO.HHN. ML:0.5 2.4763915E-5 0.1792 AML other m 2021-11-18T04:14:35.95
IV.MML1.HNE. ML:1.2 0.00011047555 0.5088 AML other m 2021-11-18T04:14:36.99
IV.MML1.HNN. ML:1 6.9942915E-5 0.2496 AML other m 2021-11-18T04:14:37.17
IV.ASSB.HHE. ML:0.5 2.1216085E-5 0.1376 AML other m 2021-11-18T04:14:37.32
IV.ASSB.HHN. ML:0.6 2.3716465E-5 0.0608 AML other m 2021-11-18T04:14:37.12
IV.MOMA.HHE. ML:0.9 3.4340318E-5 0.1216 AML other m 2021-11-18T04:14:39.97
IV.MOMA.HHN. ML:0.8 3.08996835E-5 0.1792 AML other m 2021-11-18T04:14:40.07
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