Earthquake with magnitude of ML 1.5 on date 08-11-2021 and time 21:33:30 (UTC) in region 5 km SE Castel Ritaldi (PG)

A magnitude ML 1.5 earthquake occured in region: 5 km SE Castel Ritaldi (PG), on

  • 08-11-2021 21:33:30 (UTC)
  • 08-11-2021 22:33:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.784, 12.712 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
Castel Ritaldi PG 6 3278 3278
Spoleto PG 6 38218 41496
Campello sul Clitunno PG 7 2442 43938
Trevi PG 11 8469 52407
Sant'Anatolia di Narco PG 12 564 52971
Giano dell'Umbria PG 12 3846 56817
Vallo di Nera PG 12 364 57181
Scheggino PG 13 461 57642
Montefalco PG 13 5679 63321
Massa Martana PG 15 3770 67091
Acquasparta TR 17 4778 71869
Cerreto di Spoleto PG 17 1075 72944
Bevagna PG 19 5081 78025
Gualdo Cattaneo PG 19 6155 84180
Ferentillo TR 19 1913 86093
Foligno PG 19 57155 143248
Poggiodomo PG 20 117 143365

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km S of Foligno (57155 inhabitants)
25 Km N of Terni (111501 inhabitants)
45 Km SE of Perugia (166134 inhabitants)
64 Km NE of Viterbo (67173 inhabitants)
74 Km NW of L'Aquila (69753 inhabitants)
82 Km W of Teramo (54892 inhabitants)
87 Km N of Guidonia Montecelio (88673 inhabitants)
91 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 1.5 2021-11-08
21:33:30
42.7842 12.7122 11 2021-11-08
21:40:44
Sala Sismica INGV-Roma 97348291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-08 21:33:30 ± 0.04
Latitude 42.7842 ± 0.0018
Longitude 12.7122 ± 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 97348291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 245
Semi-minor axis of confidence ellipse (meter) 229
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 239
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) 75
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.47394
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 19
Type of magnitude ML
Reference to an origin 97348291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-08 21:40:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-11-08T21:33:47.73 0.1 undecidable manual S 49 0.4739 50 0.28 89
IV.FDMO.HHZ. 2021-11-08T21:33:44.43 0.3 undecidable manual S 47 0.3732 50 -0.03 72
IV.LNSS.HHZ. 2021-11-08T21:33:42.27 0.1 undecidable manual S 127 0.3013 50 -0.07 96
IV.ASSB.HHE. 2021-11-08T21:33:41.18 0.3 undecidable manual S 351 0.2617 50 0.02 73
IV.CESI.HHZ. 2021-11-08T21:33:40.95 0.1 undecidable manual S 32 0.2617 50 -0.22 94
IV.CSP1.EHZ. 2021-11-08T21:33:40.48 0.1 undecidable manual P 49 0.4739 50 0.03 94
IV.MGAB.HHZ. 2021-11-08T21:33:40.78 3.0 undecidable manual P 0.11 0
IV.CESX.HHZ. 2021-11-08T21:33:39.21 0.3 undecidable manual S 208 0.1979 50 -0.08 74
IV.GAVE.EHZ. 2021-11-08T21:33:38.11 0.1 undecidable manual S 124 0.1619 121 -0.02 100
IV.FDMO.HHZ. 2021-11-08T21:33:38.64 0.3 undecidable manual P 47 0.3732 50 -0.08 71
IV.LNSS.HHZ. 2021-11-08T21:33:37.43 0.1 undecidable manual P 127 0.3013 50 -0.07 96
IV.MOMA.HHZ. 2021-11-08T21:33:36.23 0.3 undecidable manual S 281 0.1061 132 -0.16 74
IV.ARRO.EHE. 2021-11-08T21:33:36.28 0.3 undecidable manual P 169 0.2086 50 0.38 69
IV.CESI.HHZ. 2021-11-08T21:33:36.72 0.1 undecidable manual P 32 0.2617 50 -0.1 97
IT.GNU.HGZ. 2021-11-08T21:33:36.36 0.3 undecidable manual S 281 0.1061 132 -0.02 76
IV.ASSB.HHE. 2021-11-08T21:33:36.88 0.1 undecidable manual P 351 0.2617 50 0.08 97
IV.CESX.HHZ. 2021-11-08T21:33:35.65 0.1 undecidable manual P 208 0.1979 50 -0.08 98
IV.GAVE.EHZ. 2021-11-08T21:33:35.04 0.1 undecidable manual P 124 0.1619 121 -0.02 100
IT.GNU.HGZ. 2021-11-08T21:33:34.18 0.3 undecidable manual P 281 0.1061 132 0.13 74
IV.MOMA.HHZ. 2021-11-08T21:33:34.14 0.1 positive manual P 281 0.1061 132 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHE. ML:2.2 0.00188 0.22 AML other m 2021-11-08T21:33:36.73
IV.MOMA.HNE. ML:2.2 0.00179 0.22 AML other m 2021-11-08T21:33:36.73
IV.MOMA.HNN. ML:1.6 0.0004606912 0.1024 AML other m 2021-11-08T21:33:37.57
IV.MOMA.HHN. ML:1.7 0.0005786724 0.32 AML other m 2021-11-08T21:33:36.95
IV.GAVE.EHN. ML:1.5 0.00023893545 0.192 AML other m 2021-11-08T21:33:42.18
IV.CESX.HHE. ML:1.3 0.000129944 0.2048 AML other m 2021-11-08T21:33:40.48
IV.CESI.HHN. ML:1.4 0.00013705 0.14 AML other m 2021-11-08T21:33:41.41
IV.GAVE.EHE. ML:1.5 0.0002544045 0.128 AML other m 2021-11-08T21:33:40.72
IV.CESX.HHN. ML:1.4 0.000164512 0.1664 AML other m 2021-11-08T21:33:41.73
IV.CESI.HHE. ML:1.2 7.52E-5 0.54 AML other m 2021-11-08T21:33:42.39
IV.LNSS.HHN. ML:1.4 0.0001087564 0.1664 AML other m 2021-11-08T21:33:45.39
IV.LNSS.HHE. ML:1.6 0.0001655 0.12 AML other m 2021-11-08T21:33:43.79
IV.FDMO.HHE. ML:1.3 7.045E-5 1.84 AML other m 2021-11-08T21:33:44.00
IV.FDMO.HHN. ML:1.1 4.6509098E-5 0.1152 AML other m 2021-11-08T21:33:46.38
IV.MGAB.HHN. ML:1.3 5.1797035E-5 0.1536 AML other m 2021-11-08T21:33:50.27
IV.MGAB.HHE. ML:1.4 6.27E-5 0.18 AML other m 2021-11-08T21:33:50.50
IV.GAVE.HNE. ML:1.5 0.0002550089 0.192 AML other m 2021-11-08T21:33:41.71
IV.LNSS.HNE. ML:1.6 0.00018644865 0.5248 AML other m 2021-11-08T21:33:48.09
IV.LNSS.HNN. ML:1.6 0.00018193875 0.6272 AML other m 2021-11-08T21:33:49.93
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