Earthquake with magnitude of ML 1.1 on date 19-09-2021 and time 13:36:03 (Italy) in region 8 km N Valfabbrica (PG)

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

  • 19-09-2021 11:36:03 (UTC)
  • 19-09-2021 13:36:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.234, 12.628 at 10 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
Gualdo Tadino PG 13 15208 18597
Fossato di Vico PG 13 2840 21437
Gubbio PG 14 32216 53653
Sigillo PG 14 2404 56057
Costacciaro PG 16 1216 57273
Assisi PG 18 28299 85572
Nocera Umbra PG 19 5839 91411
Scheggia e Pascelupo PG 19 1393 92804
Bastia Umbra PG 20 21874 114678

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NE of Perugia (166134 inhabitants)
31 Km N of Foligno (57155 inhabitants)
66 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 2021-09-19
11:36:03
43.2335 12.6283 10 2021-09-19
11:45:19
Sala Sismica INGV-Roma 95631141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-19 11:36:03 ± 0.05
Latitude 43.2335 ± 0.0027
Longitude 12.6283 ± 0.0025
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95631141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 235
Semi-minor axis of confidence ellipse (meter) 157
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 213
Circular confidence region, given by single value of horizontal uncertainty (meter) 230
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.30487
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 17
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 95631141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-19 11:45:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FRON.EHZ. 2021-09-19T11:36:15.19 0.1 undecidable manual S 14 0.2932 50 -0.21 93
IV.ATPI.HNE. 2021-09-19T11:36:14.83 0.1 undecidable manual S 323 0.2725 50 0.04 96
IV.ATVA.EHN. 2021-09-19T11:36:13.82 0.3 undecidable manual S 280 0.2536 50 -0.42 67
IV.TB03.DH2.01 2021-09-19T11:36:13.52 0.1 undecidable manual S 317 0.2311 111 0.02 98
IV.SNTG.HHE. 2021-09-19T11:36:13.46 0.1 undecidable manual S 84 0.2284 111 0.05 97
IV.SSFR.HHN. 2021-09-19T11:36:13.32 0.1 undecidable manual S 29 0.2311 111 -0.21 94
IV.TB02.DHE.01 2021-09-19T11:36:12.77 0.1 undecidable manual S 311 0.2095 113 0.01 98
IV.ATSC.EHN. 2021-09-19T11:36:12.26 0.1 undecidable manual S 12 0.1952 114 0.03 98
IV.ASSB.HHZ. 2021-09-19T11:36:12.04 0.1 undecidable manual S 173 0.1925 115 -0.09 97
IV.TB01.DHE.01 2021-09-19T11:36:12.61 0.1 undecidable manual S 317 0.2041 113 0.07 97
IV.ATVO.HHZ. 2021-09-19T11:36:12.74 0.1 undecidable manual S 313 0.2194 112 -0.35 91
IV.ATLO.EHN. 2021-09-19T11:36:11.56 0.1 undecidable manual S 297 0.1808 116 -0.16 96
IV.ATPI.HNE. 2021-09-19T11:36:10.55 0.1 undecidable manual P 323 0.2725 50 0.33 91
IV.MML1.EHN. 2021-09-19T11:36:10.03 1.0 undecidable manual P 115 0.2779 50 -0.28 23
IV.ATVA.EHN. 2021-09-19T11:36:10.14 0.3 undecidable manual P 280 0.2536 50 0.23 70
IV.FRON.EHZ. 2021-09-19T11:36:10.43 0.1 undecidable manual P 14 0.2932 50 -0.14 94
IV.CESI.HHN. 2021-09-19T11:36:10.95 0.6 undecidable manual P 138 0.3049 50 0.17 47
IV.SSFR.HHN. 2021-09-19T11:36:09.49 0.1 undecidable manual P 29 0.2311 111 -0.01 98
IV.ATVO.HHZ. 2021-09-19T11:36:09.30 0.6 negative manual P 313 0.2194 112 0.06 48
IV.ATBU.EHE. 2021-09-19T11:36:09.85 0.1 undecidable manual P 347 0.2491 50 0.03 97
IV.TB02.DHE.01 2021-09-19T11:36:09.33 0.1 undecidable manual P 311 0.2095 113 0.28 93
IV.TB03.DH2.01 2021-09-19T11:36:09.93 0.1 undecidable manual P 317 0.2311 111 0.45 89
IV.SNTG.HHE. 2021-09-19T11:36:09.47 0.1 undecidable manual P 84 0.2284 111 0.04 97
IV.ASSB.HHZ. 2021-09-19T11:36:08.66 0.1 undecidable manual P 173 0.1925 115 -0.03 98
IV.TB01.DHE.01 2021-09-19T11:36:08.77 0.1 undecidable manual P 317 0.2041 113 -0.15 95
IV.ATLO.EHN. 2021-09-19T11:36:08.45 0.1 undecidable manual P 297 0.1808 116 0 99
IV.MURB.HHZ. 2021-09-19T11:36:08.64 0.1 undecidable manual S 291 0.0809 137 0.04 100
IV.ATSC.EHN. 2021-09-19T11:36:08.91 0.1 undecidable manual P 12 0.1952 114 0.16 95
IV.ATCC.EHZ. 2021-09-19T11:36:07.71 0.1 undecidable manual S 170 0.0495 151 -0.17 98
IV.ATCC.EHZ. 2021-09-19T11:36:06.31 0.1 undecidable manual P 170 0.0495 151 0.08 100
IV.MURB.HHZ. 2021-09-19T11:36:06.75 1.0 undecidable manual P 291 0.0809 137 0.1 25
IV.MMUR.HNZ. 2021-09-19T11:36:03.48 3.0 undecidable manual P -0.04 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATCC.EHN. ML:1.2 0.00024299155 0.1024 AML other m 2021-09-19T11:36:08.06
IV.ATCC.EHE. ML:1.2 0.00029159015 0.0832 AML other m 2021-09-19T11:36:07.88
IV.MURB.HHE. ML:1.5 0.000396 0.16 AML other m 2021-09-19T11:36:09.08
IV.MURB.HHN. ML:1.4 0.000312 0.22 AML other m 2021-09-19T11:36:09.86
IV.ASSB.HHE. ML:0.8 4.71E-5 0.18 AML other m 2021-09-19T11:36:12.43
IV.ASSB.HHN. ML:0.8 4.0135125E-5 0.1408 AML other m 2021-09-19T11:36:12.85
IV.MURB.HNE. ML:1.5 0.00039341395 0.1472 AML other m 2021-09-19T11:36:09.09
IV.MURB.HNN. ML:1.2 0.0002420345 0.1792 AML other m 2021-09-19T11:36:09.50
IV.ATVO.HHN. ML:0.2 1.0277395E-5 0.2816 AML other m 2021-09-19T11:36:15.66
IV.FRON.EHE. ML:0.5 1.5727435E-5 0.1408 AML other m 2021-09-19T11:36:15.48
IV.FRON.EHN. ML:0.7 2.167631E-5 0.0576 AML other m 2021-09-19T11:36:16.48
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