Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 14-09-2021 and time 03:33:03 (Italy) in region 7 km NE Assisi (PG)

A magnitude ML 1.1 earthquake occured in region: 7 km NE Assisi (PG), on

  • 14-09-2021 01:33:03 (UTC)
  • 14-09-2021 03:33:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1070, 12.6900 at 8 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.

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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
Assisi PG 7 28299 28299
Valtopina PG 7 1398 29697
Nocera Umbra PG 8 5839 35536
Valfabbrica PG 9 3389 38925
Bastia Umbra PG 12 21874 60799
Spello PG 13 8645 69444
Cannara PG 15 4305 73749
Gualdo Tadino PG 16 15208 88957
Foligno PG 17 57155 146112
Bettona PG 20 4367 150479

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km N of Foligno (57155 inhabitants)
24 Km E of Perugia (166134 inhabitants)
61 Km N of Terni (111501 inhabitants)
77 Km SE of Arezzo (99543 inhabitants)
86 Km SW of Fano (60888 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
90 Km NE of Viterbo (67173 inhabitants)
91 Km S of Pesaro (94582 inhabitants)
97 Km NW of Teramo (54892 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
Reviewed
Rev100 		ML 1.1 2021-09-14
01:33:03		 43.1067 12.6898 9 2021-09-14
01:37:49		 Sala Sismica INGV-Roma 95399461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-14 01:33:03 ± 0.06
Latitude 43.1067 ± 0.0027
Longitude 12.6898 ± 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 95399461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 390
Semi-minor axis of confidence ellipse (meter) 132
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 230
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.50992
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 95399461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-14 01:37:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TST02.HHZ. 2021-09-14T01:33:54.26 3.0 undecidable manual Sn -1.22 0
IV.SACS.HHZ. 2021-09-14T01:33:25.90 3.0 undecidable manual S -0.35 0
IV.BLLA.EHZ. 2021-09-14T01:33:24.84 3.0 positive manual P 0.97 0
IV.NARO.HHZ. 2021-09-14T01:33:22.29 0.6 undecidable manual S 351 56.5989 50 0.83 36
IV.APEC.HHZ. 2021-09-14T01:33:21.60 0.6 undecidable manual S 337 54.6009 50 0.67 39
IV.ATPI.EHZ. 2021-09-14T01:33:18.12 0.3 undecidable manual S 329 44.622 50 -0.15 69
IV.NRCA.HHZ. 2021-09-14T01:33:18.45 0.6 undecidable manual S 131 45.9207 50 -0.14 46
IV.FRON.EHZ. 2021-09-14T01:33:18.33 0.3 undecidable manual S 4 45.7209 50 -0.22 68
IV.EL6.EHZ. 2021-09-14T01:33:17.71 0.6 undecidable manual S 53 41.4252 50 0.3 45
IV.ATVO.HHZ. 2021-09-14T01:33:16.40 0.3 undecidable manual S 323 38.1285 50 -0.14 70
IV.SSFR.HHZ. 2021-09-14T01:33:16.00 0.6 undecidable manual S 12 37.3293 50 -0.31 45
IV.PARC.HHZ. 2021-09-14T01:33:16.29 3.0 positive manual P 0.05 0
IV.CAFI.HHZ. 2021-09-14T01:33:15.30 3.0 undecidable manual P 0.14 0
IV.MOMA.HHZ. 2021-09-14T01:33:15.88 0.6 undecidable manual S 196 34.9428 50 0.2 46
IV.FDMO.HHZ. 2021-09-14T01:33:14.97 0.3 undecidable manual S 103 33.1446 50 -0.22 69
IV.ATFO.HHZ. 2021-09-14T01:33:14.47 0.6 undecidable manual S 342 30.3474 106 0.2 47
IV.MMO1.EHZ. 2021-09-14T01:33:13.72 3.0 positive manual P -0.21 0
IV.MGAB.HHZ. 2021-09-14T01:33:13.07 3.0 undecidable manual P -0.11 0
IV.APEC.HHZ. 2021-09-14T01:33:13.88 0.6 undecidable manual P 337 54.6009 50 0.39 43
IV.NARO.HHZ. 2021-09-14T01:33:13.95 0.6 positive manual P 351 56.5989 50 0.16 45
IV.NRCA.HHZ. 2021-09-14T01:33:12.20 0.6 undecidable manual P 131 45.9207 50 0.06 47
IV.FRON.EHZ. 2021-09-14T01:33:12.18 0.6 undecidable manual P 4 45.7209 50 0.07 47
IV.SNTG.HHZ. 2021-09-14T01:33:12.75 0.6 undecidable manual S 51 26.1516 108 -0.11 48
IV.CING.HHZ. 2021-09-14T01:33:12.77 3.0 undecidable manual P -0.14 0
IV.ARVD.HHZ. 2021-09-14T01:33:12.18 1.0 undecidable manual P 25 47.9187 50 -0.28 22
IV.CESI.HHZ. 2021-09-14T01:33:11.74 0.6 undecidable manual S 123 20.7681 112 0.63 42
IV.MML1.EHZ. 2021-09-14T01:33:11.91 0.6 undecidable manual S 88 22.8549 110 0.12 48
IV.ATPI.EHZ. 2021-09-14T01:33:11.77 1.0 undecidable manual P 329 44.622 50 -0.19 23
IV.EL6.EHZ. 2021-09-14T01:33:11.27 0.6 positive manual P 53 41.4252 50 -0.19 46
IV.CSP1.EHZ. 2021-09-14T01:33:11.36 3.0 positive manual P -0.08 0
IV.MURB.HHZ. 2021-09-14T01:33:11.58 0.6 undecidable manual S 322 21.867 111 0.1 48
IV.SSFR.HHZ. 2021-09-14T01:33:10.59 0.6 negative manual P 12 37.3293 50 -0.23 46
IV.MOMA.HHZ. 2021-09-14T01:33:10.66 0.6 undecidable manual P 196 34.9428 50 0.2 46
IV.ATVO.HHZ. 2021-09-14T01:33:10.56 0.6 negative manual P 323 38.1285 50 -0.39 44
IV.ATFO.HHZ. 2021-09-14T01:33:09.66 0.6 negative manual P 342 30.3474 106 0.01 48
IV.FDMO.HHZ. 2021-09-14T01:33:09.86 0.6 positive manual P 103 33.1446 50 -0.32 45
IV.SNTG.HHZ. 2021-09-14T01:33:08.72 0.1 positive manual P 51 26.1516 108 -0.11 96
IV.MURB.HHZ. 2021-09-14T01:33:08.01 0.1 negative manual P 322 21.867 111 -0.02 98
IV.CESI.HHZ. 2021-09-14T01:33:08.07 0.6 undecidable manual P 123 20.7681 112 0.25 47
IV.MML1.EHZ. 2021-09-14T01:33:08.22 0.1 positive manual P 88 22.8549 110 0.01 98
IV.ATCC.EHZ. 2021-09-14T01:33:07.67 0.6 undecidable manual S 335 9.5793 132 -0.11 49
IV.ASSB.HHZ. 2021-09-14T01:33:06.91 0.6 undecidable manual S 200 7.5813 139 -0.37 47
IV.ATCC.EHZ. 2021-09-14T01:33:05.89 0.6 undecidable manual P 335 9.5793 132 -0.01 50
IV.ASSB.HHZ. 2021-09-14T01:33:05.56 0.1 positive manual P 200 7.5813 139 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATCC.EHE. ML:1.5 0.00047299999999999995 1.08 AML other m 2021-09-14T01:33:08.18
IV.ATCC.EHN. ML:1.6 0.0005525 1.32 AML other m 2021-09-14T01:33:08.87
IV.ASSB.HHN. ML:1.7 0.000812 0.36 AML other m 2021-09-14T01:33:08.56
IV.ASSB.HHE. ML:1.6 0.0006025000000000001 0.76 AML other m 2021-09-14T01:33:08.79
IV.MML1.EHN. ML:1.4 0.000179 0.2 AML other m 2021-09-14T01:33:12.22
IV.MML1.EHE. ML:1.4 0.000153 0.2 AML other m 2021-09-14T01:33:12.23
IV.MURB.HHE. ML:1.7 0.000361 0.22 AML other m 2021-09-14T01:33:12.62
IV.SNTG.HHE. ML:1.1 0.00007 0.3 AML other m 2021-09-14T01:33:13.02
IV.MURB.HHN. ML:1.6 0.000266 0.16 AML other m 2021-09-14T01:33:13.32
IV.SNTG.HHN. ML:1.1 0.00007209999999999999 0.34 AML other m 2021-09-14T01:33:13.87
IV.CESI.HHE. ML:1.0 0.0000665 1 AML other m 2021-09-14T01:33:14.18
IV.ATFO.HHE. ML:1.0 0.00004355000000000001 0.98 AML other m 2021-09-14T01:33:14.32
IV.ATFO.HHN. ML:0.9 0.000036 0.84 AML other m 2021-09-14T01:33:15.08
IV.FDMO.HHE. ML:1.0 0.0000423 0.5 AML other m 2021-09-14T01:33:15.12
IV.FDMO.HHN. ML:1.2 0.00006535 0.18 AML other m 2021-09-14T01:33:15.29
IV.SSFR.HHN. ML:1.6 0.00013700000000000002 0.28 AML other m 2021-09-14T01:33:16.58
IV.SSFR.HHE. ML:1.7 0.00017449999999999999 0.22 AML other m 2021-09-14T01:33:16.69
IV.CESI.HHN. ML:1.0 0.000072 0.78 AML other m 2021-09-14T01:33:16.90
IV.MOMA.HHN. ML:0.9 0.00003295 0.2 AML other m 2021-09-14T01:33:17.14
IV.ATVO.HHE. ML:1.0 0.000041349999999999995 0.72 AML other m 2021-09-14T01:33:17.04
IV.MOMA.HHE. ML:1.0 0.000045350000000000005 0.96 AML other m 2021-09-14T01:33:18.85
IV.ATVO.HHN. ML:1.0 0.0000402 1.02 AML other m 2021-09-14T01:33:18.82
IV.CSP1.EHN. ML:1.5 0.0001095 1.08 AML other m 2021-09-14T01:33:19.78
IV.FRON.EHE. ML:1.1 0.00003325 1.56 AML other m 2021-09-14T01:33:19.86
IV.ATPI.EHN. ML:0.9 0.000023199999999999998 0.84 AML other m 2021-09-14T01:33:20.21
IV.CSP1.EHE. ML:1.5 0.0000933 1.48 AML other m 2021-09-14T01:33:20.96
IV.ARVD.HHE. ML:1.0 0.000024299999999999998 1.44 AML other m 2021-09-14T01:33:20.98
IV.FRON.EHN. ML:1.1 0.0000422 0.8 AML other m 2021-09-14T01:33:20.03
IV.CING.HHN. ML:1.1 0.0000317 0.14 AML other m 2021-09-14T01:33:20.57
IV.CING.HHE. ML:1.2 0.000041 0.56 AML other m 2021-09-14T01:33:20.55
IV.ATPI.EHE. ML:0.8 0.0000195 1.5 AML other m 2021-09-14T01:33:20.22
IV.ARVD.HHN. ML:0.9 0.000018200000000000002 0.34 AML other m 2021-09-14T01:33:21.08
IV.NRCA.HHE. ML:1.1 0.0000387 0.14 AML other m 2021-09-14T01:33:21.43
IV.NRCA.HHN. ML:1.1 0.000042 0.12 AML other m 2021-09-14T01:33:21.88
IV.NARO.HHE. ML:1.0 0.000021014999999999998 1.32 AML other m 2021-09-14T01:33:22.14
IV.MGAB.HHN. ML:1.2 0.00003915 0.46 AML other m 2021-09-14T01:33:22.45
IV.MGAB.HHE. ML:1.1 0.00003245 1.7 AML other m 2021-09-14T01:33:23.89
IV.APEC.HHN. ML:1.0 0.000027199999999999997 0.18 AML other m 2021-09-14T01:33:23.23
IV.NARO.HHN. ML:0.6 0.000011455 1.14 AML other m 2021-09-14T01:33:23.99
IV.APEC.HHE. ML:0.9 0.000019549999999999997 0.56 AML other m 2021-09-14T01:33:24.59
IV.CAFI.HHN. ML:0.9 0.0000155 0.94 AML other m 2021-09-14T01:33:25.71
IV.PARC.HHN. ML:0.8 0.000010950000000000002 0.42 AML other m 2021-09-14T01:33:27.28
IV.PARC.HHE. ML:0.8 0.000012199999999999998 0.86 AML other m 2021-09-14T01:33:30.44
IV.CAFI.HHE. ML:0.9 0.0000133 0.42 AML other m 2021-09-14T01:33:30.55
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