Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 08-11-2021 and time 07:57:27 (UTC) in region 7 km SE Valtopina (PG)

A magnitude ML 0.8 earthquake occured in region: 7 km SE Valtopina (PG), on

  • 08-11-2021 07:57:27 (UTC)
  • 08-11-2021 08:57:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0080, 12.8100 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Valtopina PG 7 1398 1398
Foligno PG 10 57155 58553
Spello PG 11 8645 67198
Nocera Umbra PG 12 5839 73037
Serravalle di Chienti MC 14 1070 74107
Trevi PG 15 8469 82576
Monte Cavallo MC 16 145 82721
Sellano PG 16 1079 83800
Assisi PG 17 28299 112099
Montefalco PG 18 5679 117778
Bevagna PG 18 5081 122859
Cannara PG 18 4305 127164
Sefro MC 19 422 127586

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km NE of Foligno (57155 inhabitants)
36 Km E of Perugia (166134 inhabitants)
51 Km N of Terni (111501 inhabitants)
83 Km W of Teramo (54892 inhabitants)
87 Km NE of Viterbo (67173 inhabitants)
87 Km NW of L'Aquila (69753 inhabitants)
89 Km SW of Ancona (100861 inhabitants)
91 Km SE of Arezzo (99543 inhabitants)
95 Km S of Fano (60888 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 0.8 2021-11-08
07:57:27		 43.008 12.8098 10 2022-03-30
13:04:15		 Bollettino Sismico Italiano INGV 97364801
Reviewed
Rev100 		ML 0.8 2021-11-08
07:57:27		 43.0078 12.81 10 2021-11-08
08:12:34		 Sala Sismica INGV-Roma 97337021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-08 07:57:27 ± 0.04
Latitude 43.0080 ± 0.0027
Longitude 12.8098 ± 0.0025
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 97364801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 240
Semi-minor axis of confidence ellipse (meter) 230
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 359
Circular confidence region, given by single value of horizontal uncertainty (meter) 240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.06925
Epicentral distance of station farthest from the epicenter (degree) 0.38491
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 97364801
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-09 15:47:44

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 97337021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-08 08:12:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-11-08T07:57:42.40 0.1 undecidable manual S 33 42.7239 50 0.34 88
IV.GAVE.HNE. 2021-11-08T07:57:40.25 0.1 undecidable manual S 169 35.742 50 0.08 95
IV.MURB.HHE. 2021-11-08T07:57:40.89 0.6 undecidable manual S 321 36.5412 50 0.5 43
IV.CSP1.EHZ. 2021-11-08T07:57:39.61 0.3 undecidable manual S 74 33.3444 50 0.06 71
IV.SNTG.HHZ. 2021-11-08T07:57:38.24 0.1 undecidable manual S 21 29.3484 50 -0.25 92
IV.MOMA.HHE. 2021-11-08T07:57:38.75 0.1 undecidable manual S 221 29.8479 50 0.13 95
IV.NRCA.HNN. 2021-11-08T07:57:38.78 0.1 undecidable manual S 128 31.4463 50 -0.25 92
IV.ATCC.EHZ. 2021-11-08T07:57:36.85 0.1 undecidable manual S 325 23.9538 113 -0.12 96
IV.EL6.EHZ. 2021-11-08T07:57:36.05 1.0 negative manual P 33 42.7239 50 -0.05 24
IV.FDMO.HHZ. 2021-11-08T07:57:36.45 0.3 undecidable manual S 82 22.755 114 -0.12 72
IV.NRCA.HNN. 2021-11-08T07:57:34.14 0.3 undecidable manual P 128 31.4463 50 -0.21 70
IV.CSP1.EHZ. 2021-11-08T07:57:34.59 1.0 negative manual P 74 33.3444 50 -0.05 24
IV.MML1.EHZ. 2021-11-08T07:57:34.97 0.1 undecidable manual S 48 17.5713 120 0 99
IV.SNTG.HHZ. 2021-11-08T07:57:34.05 1.0 undecidable manual P 21 29.3484 50 0.02 24
IV.GAVE.HNE. 2021-11-08T07:57:34.95 0.6 undecidable manual P 169 35.742 50 -0.06 48
IV.MOMA.HHE. 2021-11-08T07:57:34.12 0.1 undecidable manual P 221 29.8479 50 0.01 97
IV.MURB.HHE. 2021-11-08T07:57:34.97 0.3 undecidable manual P 321 36.5412 50 -0.16 70
IV.ASSB.HHZ. 2021-11-08T07:57:33.53 0.1 undecidable manual S 287 12.876 128 -0.07 99
IV.ATCC.EHZ. 2021-11-08T07:57:33.04 0.6 negative manual P 325 23.9538 113 -0.12 48
IV.CESI.HHZ. 2021-11-08T07:57:32.55 0.1 undecidable manual S 93 7.6812 142 0.22 97
IV.FDMO.HHZ. 2021-11-08T07:57:32.95 1.0 positive manual P 82 22.755 114 0.02 24
IV.ASSB.HHZ. 2021-11-08T07:57:31.21 0.1 undecidable manual P 287 12.876 128 0 100
IV.MML1.EHZ. 2021-11-08T07:57:31.97 0.1 undecidable manual P 48 17.5713 120 -0.03 99
IV.CESI.HHZ. 2021-11-08T07:57:30.62 0.1 undecidable manual P 93 7.6812 142 0.14 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHE. ML:1.2 0.0001875 0.14 AML other m 2021-11-08T07:57:33.67
IV.ASSB.HHN. ML:1.2 0.000176 0.12 AML other m 2021-11-08T07:57:33.69
IV.MML1.HNE. ML:0.9 0.00006741724 0.1536 AML other m 2021-11-08T07:57:35.13
IV.MML1.EHE. ML:0.9 0.000060200000000000006 0.12 AML other m 2021-11-08T07:57:35.13
IV.MML1.EHN. ML:0.6 0.00003165 0.4 AML other m 2021-11-08T07:57:35.04
IV.FDMO.HHN. ML:0.2 0.000012144686 0.1408 AML other m 2021-11-08T07:57:36.58
IV.ATCC.EHE. ML:0.8 0.000039642085000000003 1.8848 AML other m 2021-11-08T07:57:36.01
IV.ATCC.EHN. ML:1.1 0.000069728225 0.16 AML other m 2021-11-08T07:57:37.18
IV.SNTG.HNE. ML:0.8 0.000031027805 0.2432 AML other m 2021-11-08T07:57:38.36
IV.SNTG.HHE. ML:0.3 0.0000124209838775 0.1216 AML other m 2021-11-08T07:57:38.45
IV.SNTG.HHN. ML:0.5 0.0000138804115 0.1408 AML other m 2021-11-08T07:57:38.71
IV.FDMO.HHE. ML:0.2 0.0000106465505 0.1408 AML other m 2021-11-08T07:57:38.71
IV.CSP1.EHN. ML:0.7 0.00002132301 0.1408 AML other m 2021-11-08T07:57:40.46
IV.EL6.EHN. ML:0.8 0.0000194809305 0.2048 AML other m 2021-11-08T07:57:42.52
IV.EL6.EHE. ML:0.9 0.000027279075 0.1408 AML other m 2021-11-08T07:57:42.89
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