Earthquake with magnitude of ML 1.1 on date 24-09-2021 and time 14:36:02 (Italy) in region 8 km N Valfabbrica (PG)

A magnitude ML 1.1 earthquake occured in region: 8 km N Valfabbrica (PG), on

  • 24-09-2021 12:36:02 (UTC)
  • 24-09-2021 14:36:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.235, 12.622 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
Valfabbrica PG 8 3389 3389
Fossato di Vico PG 13 2840 6229
Gualdo Tadino PG 13 15208 21437
Gubbio PG 14 32216 53653
Sigillo PG 15 2404 56057
Costacciaro PG 16 1216 57273
Assisi PG 18 28299 85572
Scheggia e Pascelupo PG 19 1393 86965
Nocera Umbra PG 19 5839 92804
Bastia Umbra PG 20 21874 114678

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NE of Perugia (166134 inhabitants)
32 Km N of Foligno (57155 inhabitants)
65 Km E of Arezzo (99543 inhabitants)
75 Km N of Terni (111501 inhabitants)
75 Km SW of Fano (60888 inhabitants)
79 Km SW of Pesaro (94582 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
92 Km S of Rimini (147750 inhabitants)
100 Km NE of Viterbo (67173 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 the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.1 2021-09-24
12:36:02
43.2348 12.6217 9 2021-09-24
12:46:06
Sala Sismica INGV-Roma 95832011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-24 12:36:02 ± 0.05
Latitude 43.2348 ± 0.0027
Longitude 12.6217 ± 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 95832011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 392
Semi-minor axis of confidence ellipse (meter) 238
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 256
Circular confidence region, given by single value of horizontal uncertainty (meter) 390
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.05126
Epicentral distance of station farthest from the epicenter (degree) 0.393
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:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 12
Type of magnitude ML
Reference to an origin 95832011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-24 12:46:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2021-09-24T12:36:17.33 0.6 undecidable manual S 120 0.393 50 0.22 45
IV.EL6.EHZ. 2021-09-24T12:36:16.47 0.6 undecidable manual S 75 0.3615 50 0.29 45
IV.CESI.HHZ. 2021-09-24T12:36:14.79 0.6 undecidable manual S 138 0.3085 50 0.18 46
IV.FRON.EHZ. 2021-09-24T12:36:13.85 0.6 undecidable manual S 15 0.2923 50 -0.28 45
IV.TB03.DH2. 2021-09-24T12:36:12.14 0.6 undecidable manual S 317 0.2266 110 0.26 46
IV.SSFR.HHN. 2021-09-24T12:36:11.95 0.6 undecidable manual S 30 0.2329 110 -0.16 47
IV.ATVO.HHZ. 2021-09-24T12:36:11.39 0.6 undecidable manual S 313 0.2149 111 -0.07 48
IV.FDMO.HHZ. 2021-09-24T12:36:11.34 0.6 negative manual P 120 0.393 50 0.37 44
IV.ASSB.HHZ. 2021-09-24T12:36:10.58 0.6 undecidable manual S 172 0.1943 113 -0.14 48
IV.ATSC.EHN. 2021-09-24T12:36:10.93 0.6 undecidable manual S 14 0.1952 113 0.18 47
IV.EL6.EHZ. 2021-09-24T12:36:10.37 1.0 negative manual P 75 0.3615 50 -0.06 23
IV.CESI.HHZ. 2021-09-24T12:36:09.42 0.6 undecidable manual P 138 0.3085 50 -0.11 47
IV.ATFO.HHZ. 2021-09-24T12:36:09.09 0.6 undecidable manual S 345 0.1367 121 0.34 46
IV.ATLO.HNN. 2021-09-24T12:36:09.96 0.6 undecidable manual S 297 0.1754 115 -0.1 48
IV.FRON.EHZ. 2021-09-24T12:36:09.00 0.3 negative manual P 15 0.2923 50 -0.25 69
IV.ASSB.HHZ. 2021-09-24T12:36:07.15 0.1 positive manual P 172 0.1943 113 -0.14 96
IV.SSFR.HHN. 2021-09-24T12:36:07.80 0.1 undecidable manual P 30 0.2329 110 -0.28 92
IV.MURB.HHZ. 2021-09-24T12:36:07.10 0.6 undecidable manual S 292 0.0764 138 0.17 48
IV.ATVO.HHZ. 2021-09-24T12:36:07.78 0.6 undecidable manual P 313 0.2149 111 0.07 48
IV.ATSC.EHN. 2021-09-24T12:36:07.35 0.1 undecidable manual P 14 0.1952 113 0.05 97
IV.TB03.DH2. 2021-09-24T12:36:07.58 0.1 undecidable manual P 317 0.2266 110 -0.38 90
IV.ATFO.HHZ. 2021-09-24T12:36:06.32 0.1 undecidable manual P 345 0.1367 121 0.17 96
IV.ATLO.HNN. 2021-09-24T12:36:06.98 0.1 undecidable manual P 297 0.1754 115 0.08 97
IV.ATCC.EHZ. 2021-09-24T12:36:06.21 0.6 undecidable manual S 165 0.0513 148 -0.14 49
IV.MURB.HHZ. 2021-09-24T12:36:05.27 0.3 undecidable manual P 292 0.0764 138 0.18 73
IV.ATCC.EHZ. 2021-09-24T12:36:04.81 0.1 undecidable manual P 165 0.0513 148 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MURB.HNE. ML:1.8 0.0009905 0.16 AML other m 2021-09-24T12:36:07.66
IV.MURB.HHE. ML:1.8 0.0010175 0.16 AML other m 2021-09-24T12:36:07.58
IV.MURB.HNN. ML:1.6 0.0005685 0.6 AML other m 2021-09-24T12:36:08.30
IV.MURB.HHN. ML:1.7 0.0007875 0.22 AML other m 2021-09-24T12:36:08.36
IV.ATFO.HHN. ML:0.8 5.88E-5 0.72 AML other m 2021-09-24T12:36:09.97
IV.ASSB.HHE. ML:1.3 0.0001365 0.26 AML other m 2021-09-24T12:36:10.93
IV.ATFO.HHE. ML:0.8 6.235E-5 1.14 AML other m 2021-09-24T12:36:11.67
IV.ASSB.HHN. ML:1.2 0.000126 1.12 AML other m 2021-09-24T12:36:11.99
IV.ATVO.HHN. ML:0.6 2.61E-5 0.38 AML other m 2021-09-24T12:36:11.64
IV.ATVO.HHE. ML:0.9 4.325E-5 0.9 AML other m 2021-09-24T12:36:13.62
IV.FRON.EHE. ML:1 3.84E-5 0.7 AML other m 2021-09-24T12:36:13.89
IV.FRON.EHN. ML:1 4.16E-5 0.28 AML other m 2021-09-24T12:36:14.77
IV.GAVE.EHE. ML:1.4 4.97E-5 0.64 AML other m 2021-09-24T12:36:27.63
IV.GAVE.EHN. ML:1.4 4.685E-5 1.26 AML other m 2021-09-24T12:36:41.24
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