Earthquake with magnitude of ML 0.7 on date 20-11-2021 and time 00:47:16 (Italy) in region 2 km W Cerreto di Spoleto (PG)

A magnitude ML 0.7 earthquake occured in region: 2 km W Cerreto di Spoleto (PG), on

  • 19-11-2021 23:47:16 (UTC)
  • 20-11-2021 00:47:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.822, 12.897 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
Cerreto di Spoleto PG 2 1075 1075
Vallo di Nera PG 6 364 1439
Sellano PG 8 1079 2518
Campello sul Clitunno PG 10 2442 4960
Sant'Anatolia di Narco PG 11 564 5524
Poggiodomo PG 13 117 5641
Scheggino PG 13 461 6102
Preci PG 13 724 6826
Trevi PG 14 8469 15295
Cascia PG 15 3217 18512
Spoleto PG 16 38218 56730
Norcia PG 16 4957 61687
Castel Ritaldi PG 18 3278 64965
Monteleone di Spoleto PG 19 599 65564
Visso MC 20 1107 66671

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km SE of Foligno (57155 inhabitants)
35 Km NE of Terni (111501 inhabitants)
52 Km SE of Perugia (166134 inhabitants)
67 Km NW of L'Aquila (69753 inhabitants)
68 Km W of Teramo (54892 inhabitants)
79 Km NE of Viterbo (67173 inhabitants)
92 Km N of Guidonia Montecelio (88673 inhabitants)
96 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 0.7 2021-11-19
23:47:16
42.8222 12.8972 11 2021-11-19
23:52:08
Sala Sismica INGV-Roma 97609671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-19 23:47:16 ± 0.04
Latitude 42.8222 ± 0.0027
Longitude 12.8972 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97609671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 250
Semi-minor axis of confidence ellipse (meter) 245
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 233
Circular confidence region, given by single value of horizontal uncertainty (meter) 250
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 85
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) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.1304
Epicentral distance of station farthest from the epicenter (degree) 0.32376
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:0.7

Field Value
Value 0.7
Uncertainty 0.1
Num. used stations 7
Type of magnitude ML
Reference to an origin 97609671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-19 23:52:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2021-11-19T23:47:29.22 0.6 undecidable manual S 76 0.3238 50 0.2 47
IV.ASSB.HHZ. 2021-11-19T23:47:27.59 0.6 undecidable manual S 322 0.2806 50 -0.15 47
IV.LNSS.HHZ. 2021-11-19T23:47:26.57 0.3 undecidable manual S 154 0.2428 50 -0.05 72
IV.MOMA.HHZ. 2021-11-19T23:47:26.35 0.3 undecidable manual S 266 0.2401 50 -0.19 70
IV.CESI.HHZ. 2021-11-19T23:47:24.83 0.6 undecidable manual S 2 0.1826 50 0 49
IV.NRCA.HHZ. 2021-11-19T23:47:24.05 0.3 undecidable manual S 86 0.1592 50 -0.09 73
IV.ASSB.HHZ. 2021-11-19T23:47:23.12 0.6 undecidable manual P 322 0.2806 50 -0.06 48
IV.MMO1.EHZ. 2021-11-19T23:47:23.85 0.3 undecidable manual P 76 0.3238 50 -0.06 71
IV.GAVE.EHZ. 2021-11-19T23:47:23.21 0.1 undecidable manual S 181 0.1304 127 -0.02 100
IV.LNSS.HHZ. 2021-11-19T23:47:22.47 0.3 undecidable manual P 154 0.2428 50 -0.06 72
IV.MOMA.HHZ. 2021-11-19T23:47:22.66 0.1 undecidable manual P 266 0.2401 50 0.17 96
IV.NRCA.HHZ. 2021-11-19T23:47:21.05 0.1 undecidable manual P 86 0.1592 50 -0.05 98
IV.CESI.HHZ. 2021-11-19T23:47:21.61 0.1 undecidable manual P 2 0.1826 50 0.12 98
IV.GAVE.EHZ. 2021-11-19T23:47:20.71 0.1 undecidable manual P 181 0.1304 127 0.14 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:0.7 5.14E-5 0.24 AML other m 2021-11-19T23:47:23.52
IV.GAVE.EHN. ML:0.7 5.245E-5 0.28 AML other m 2021-11-19T23:47:23.52
IV.NRCA.HHE. ML:0.8 5.06E-5 1.28 AML other m 2021-11-19T23:47:24.78
IV.NRCA.HHN. ML:0.8 4.625E-5 0.56 AML other m 2021-11-19T23:47:25.51
IV.CESI.HHN. ML:0.8 4.499942E-5 0.6784 AML other m 2021-11-19T23:47:25.13
IV.ASSB.HHE. ML:0.5 1.26528938E-5 0.5632 AML other m 2021-11-19T23:47:28.87
IV.ASSB.HHN. ML:0.5 1.4951449E-5 0.3968 AML other m 2021-11-19T23:47:27.98
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