Earthquake with magnitude of ML 0.9 on date 03-11-2021 and time 23:54:33 (UTC) in region 2 km S Giano dell'Umbria (PG)

A magnitude ML 0.9 earthquake occured in region: 2 km S Giano dell'Umbria (PG), on

  • 03-11-2021 23:54:33 (UTC)
  • 04-11-2021 00:54:33 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.82, 12.574 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
Giano dell'Umbria PG 2 3846 3846
Massa Martana PG 6 3770 7616
Castel Ritaldi PG 8 3278 10894
Gualdo Cattaneo PG 10 6155 17049
Montefalco PG 11 5679 22728
Bevagna PG 13 5081 27809
Collazzone PG 14 3473 31282
Todi PG 14 16851 48133
Acquasparta TR 14 4778 52911
Trevi PG 16 8469 61380
Spoleto PG 16 38218 99598
Campello sul Clitunno PG 17 2442 102040
Fratta Todina PG 17 1839 103879
Monte Castello di Vibio PG 18 1567 105446
Foligno PG 19 57155 162601
Cannara PG 20 4305 166906
Montecastrilli TR 20 5022 171928

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km SW of Foligno (57155 inhabitants)
29 Km N of Terni (111501 inhabitants)
35 Km SE of Perugia (166134 inhabitants)
59 Km NE of Viterbo (67173 inhabitants)
85 Km NW of L'Aquila (69753 inhabitants)
91 Km SE of Arezzo (99543 inhabitants)
92 Km N of Guidonia Montecelio (88673 inhabitants)
94 Km W of Teramo (54892 inhabitants)
97 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 0.9 2021-11-03
23:54:33
42.82 12.5742 9 2021-11-04
00:11:49
Sala Sismica INGV-Roma 97226421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-03 23:54:33 ± 0.05
Latitude 42.8200 ± 0.0018
Longitude 12.5742 ± 0.0049
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97226421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 355
Semi-minor axis of confidence ellipse (meter) 225
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 258
Circular confidence region, given by single value of horizontal uncertainty (meter) 360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.50452
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 97226421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-04 00:11:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GRIS.EHZ. 2021-11-03T23:56:21.63 3.0 undecidable manual Sn -2.03 0
IV.SLCN.HHZ. 2021-11-03T23:56:18.62 3.0 undecidable manual Sg 10.27 0
IX.SCL3.EHZ.02 2021-11-03T23:56:08.16 3.0 undecidable manual Sg 7.06 0
IV.MRVN.HHZ. 2021-11-03T23:56:04.22 3.0 undecidable manual Sn 0.43 0
IX.SRN3.HHZ.02 2021-11-03T23:55:56.85 3.0 undecidable manual Sn -7.65 0
IV.MOCO.HHZ. 2021-11-03T23:55:46.47 3.0 undecidable manual Sg 1.96 0
IV.GIZZ.HHZ. 2021-11-03T23:55:45.54 3.0 positive manual Pn 0.38 0
OT.OT17.EHZ. 2021-11-03T23:55:38.03 3.0 undecidable manual Sn -4.35 0
IV.VAGA.HNZ. 2021-11-03T23:55:34.77 3.0 undecidable manual Sg 1.83 0
IV.PTCC.HHZ. 2021-11-03T23:55:33.78 3.0 positive manual Pg 9.07 0
IX.STN3.HNZ.01 2021-11-03T23:55:30.38 3.0 undecidable manual Pg 6.04 0
IV.CMPR.HHZ. 2021-11-03T23:55:30.45 3.0 undecidable manual Pg 5.94 0
IX.NSC3.EHZ.02 2021-11-03T23:55:21.20 3.0 negative manual Pg 3.7 0
IV.MCRV.HHZ. 2021-11-03T23:55:20.32 3.0 undecidable manual Pg 1.83 0
IV.MTMR.HNZ. 2021-11-03T23:55:16.16 3.0 undecidable manual Pn 0.19 0
IV.SNTG.HHZ. 2021-11-03T23:54:52.61 3.0 undecidable manual S 0
IV.ATVA.EHE. 2021-11-03T23:54:51.33 0.3 undecidable manual S 335 0.5045 50 -0.23 68
IV.FDMO.HHZ. 2021-11-03T23:54:49.33 0.3 undecidable manual S 60 0.4335 50 -0.13 70
IV.LNSS.HNN. 2021-11-03T23:54:48.76 0.3 undecidable manual S 122 0.4056 50 0.14 71
IV.MML1.HNZ. 2021-11-03T23:54:48.87 0.3 undecidable manual S 45 0.4128 50 0.02 72
IV.NRCA.HHZ. 2021-11-03T23:54:48.49 0.3 undecidable manual S 88 0.3966 50 0.14 71
IV.CESI.HNZ. 2021-11-03T23:54:45.53 0.3 undecidable manual S 53 0.3049 50 -0.1 73
IV.ATVA.EHE. 2021-11-03T23:54:44.32 0.3 undecidable manual P 335 0.5045 50 0.3 67
IV.ASSB.HHZ. 2021-11-03T23:54:43.09 0.3 undecidable manual S 16 0.2311 110 -0.05 74
IV.SNTG.HHZ. 2021-11-03T23:54:43.04 3.0 undecidable manual P 0
IV.NRCA.HHZ. 2021-11-03T23:54:42.09 0.1 undecidable manual P 88 0.3966 50 -0.07 96
IV.FDMO.HHZ. 2021-11-03T23:54:42.84 0.3 undecidable manual P 60 0.4335 50 0.04 72
IV.LNSS.HNN. 2021-11-03T23:54:42.26 0.3 undecidable manual P 122 0.4056 50 -0.06 72
IV.CESX.HHZ. 2021-11-03T23:54:42.20 0.3 undecidable manual S 177 0.2113 111 -0.25 72
IV.MML1.HNZ. 2021-11-03T23:54:42.42 0.3 undecidable manual P 45 0.4128 50 -0.03 72
IV.RM33.EHZ. 2021-11-03T23:54:41.55 3.0 negative manual P -3.75 0
IV.MGAB.HHN. 2021-11-03T23:54:41.42 0.6 undecidable manual P 285 0.3507 50 0.04 49
IV.CESI.HNZ. 2021-11-03T23:54:40.65 0.3 undecidable manual P 53 0.3049 50 0.05 73
IV.ASSB.HHZ. 2021-11-03T23:54:39.16 0.3 undecidable manual P 16 0.2311 110 0 75
IV.CESX.HHZ. 2021-11-03T23:54:38.78 0.1 undecidable manual P 177 0.2113 111 0.03 100
IV.MOMA.HHZ. 2021-11-03T23:54:36.80 0.6 undecidable manual S 190 0.0162 169 -0.13 51
IV.MOMA.HHZ. 2021-11-03T23:54:35.78 0.1 undecidable manual P 190 0.0162 169 0.22 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHN. ML:0 0.000403 0.08 AML other m 2021-11-03T23:54:37.33
IV.MOMA.HNN. ML:0 0.00035948335 0.0896 AML other m 2021-11-03T23:54:37.29
IV.MOMA.HNE. ML:0 0.0006445 0.14 AML other m 2021-11-03T23:54:38.10
IV.MOMA.HHE. ML:0 0.000674 0.16 AML other m 2021-11-03T23:54:38.18
IV.CESX.HHE. ML:1 6.3173305E-5 0.2944 AML other m 2021-11-03T23:54:44.38
IV.CESX.HHN. ML:0.9 5.0924015E-5 0.2816 AML other m 2021-11-03T23:54:44.10
IV.NRCA.HHE. ML:0.8 1.8546635E-5 0.0896 AML other m 2021-11-03T23:54:49.40
IV.NRCA.HHN. ML:1 3.367128E-5 0.1152 AML other m 2021-11-03T23:54:49.27
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