Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 23-05-2021 and time 15:37:32 (Italy) in region 5 km E Valfabbrica (PG)

A magnitude ML 1.4 earthquake occured in region: 5 km E Valfabbrica (PG), on

  • 23-05-2021 13:37:32 (UTC)
  • 23-05-2021 15:37:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1420, 12.6550 at 11 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
Valfabbrica PG 5 3389 3389
Assisi PG 8 28299 31688
Nocera Umbra PG 12 5839 37527
Bastia Umbra PG 12 21874 59401
Valtopina PG 12 1398 60799
Gualdo Tadino PG 15 15208 76007
Spello PG 17 8645 84652
Cannara PG 17 4305 88957
Fossato di Vico PG 19 2840 91797
Bettona PG 20 4367 96164

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km N of Foligno (57155 inhabitants)
22 Km E of Perugia (166134 inhabitants)
65 Km N of Terni (111501 inhabitants)
72 Km SE of Arezzo (99543 inhabitants)
84 Km SW of Fano (60888 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
88 Km S of Pesaro (94582 inhabitants)
92 Km NE of Viterbo (67173 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 1.4 2021-05-23
13:37:32		 43.1417 12.6547 11 2021-05-23
13:56:30		 Sala Sismica INGV-Roma 90415171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-23 13:37:32 ± 0.06
Latitude 43.1417 ± 0.0036
Longitude 12.6547 ± 0.0062
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 90415171

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 510
Semi-minor axis of confidence ellipse (meter) 310
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 234
Circular confidence region, given by single value of horizontal uncertainty (meter) 510.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 136
Number of associated phases, regardless of their use for origin computation 53
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.47394
Number of stations at which the event was observed 41
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 90415171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-23 13:56:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
SL.KOGS.BHZ. 2021-05-23T13:39:27.02 3.0 undecidable manual Sn -0.76 0
IV.PTRP.HHZ. 2021-05-23T13:39:24.16 3.0 undecidable manual Sg 8.13 0
IV.QLNO.HHZ. 2021-05-23T13:39:20.30 3.0 undecidable manual Sg 13.22 0
IV.VARE.HHZ. 2021-05-23T13:39:17.19 3.0 undecidable manual Sn -3.21 0
IV.HLNI.HHZ. 2021-05-23T13:39:01.81 3.0 negative manual Pn -1.54 0
IV.EFIU.HHZ. 2021-05-23T13:39:01.87 3.0 undecidable manual Pn 3.18 0
IX.MNT3.HHZ.02 2021-05-23T13:39:00.22 3.0 undecidable manual Sg 2.66 0
IV.FREG.EHZ. 2021-05-23T13:38:55.84 3.0 undecidable manual Sn 0.22 0
IV.CRTO.HHZ. 2021-05-23T13:38:54.07 3.0 undecidable manual Sg 2.05 0
IV.GIZZ.HHZ. 2021-05-23T13:38:45.02 3.0 negative manual Pn -3.51 0
IT.GLNS.HNZ. 2021-05-23T13:38:36.65 3.0 undecidable manual Sg -0.83 0
IV.AGLI.HHZ. 2021-05-23T13:38:32.70 3.0 undecidable manual Pg 7.44 0
IX.MNT3.HHZ.02 2021-05-23T13:38:23.50 3.0 negative manual Pg 3.21 0
IV.SGG.HHZ. 2021-05-23T13:38:13.94 3.0 undecidable manual Pg 3.57 0
IV.RIBO.EHZ.01 2021-05-23T13:38:12.29 3.0 undecidable manual S -2.78 0
IV.LRP.EHZ. 2021-05-23T13:38:02.88 3.0 positive manual Pg -0.28 0
IV.CPGN.EHZ. 2021-05-23T13:37:56.60 3.0 undecidable manual S -1.9 0
IV.FIR.HHZ. 2021-05-23T13:37:53.47 3.0 undecidable manual P -2.74 0
IV.CAFI.HHZ. 2021-05-23T13:37:51.51 3.0 undecidable manual S -1.35 0
IV.GAVE.EHZ. 2021-05-23T13:37:49.88 3.0 undecidable manual S -3.03 0
IV.MC2.EHZ. 2021-05-23T13:37:49.80 3.0 undecidable manual S -1.76 0
IV.PIEI.HHZ. 2021-05-23T13:37:46.84 0.6 undecidable manual S 348 44.7219 50 0.09 48
IV.SSFR.HHZ. 2021-05-23T13:37:43.76 0.6 undecidable manual S 17 34.2435 50 -0.19 48
IV.CAFI.HHZ. 2021-05-23T13:37:43.41 3.0 negative manual P -0.53 0
IV.NARO.HHZ. 2021-05-23T13:37:42.04 3.0 undecidable manual P -0.25 0
IV.BADI.EHZ. 2021-05-23T13:37:42.67 0.6 undecidable manual P 321 52.6029 50 0.84 38
IV.CESI.HHZ. 2021-05-23T13:37:41.72 0.6 undecidable manual S 127 25.3524 50 0.16 49
IV.NRCA.HHZ. 2021-05-23T13:37:41.90 3.0 positive manual P -1.44 0
IV.ATFO.HHZ. 2021-05-23T13:37:41.79 0.6 undecidable manual S 345 25.8519 50 0.09 50
IV.CING.HHZ. 2021-05-23T13:37:41.99 3.0 negative manual P -0.64 0
IV.ATLO.EHZ. 2021-05-23T13:37:41.89 0.6 undecidable manual S 314 27.75 50 -0.32 47
IV.MGAB.HHZ. 2021-05-23T13:37:41.92 3.0 undecidable manual P -0.91 0
IV.MML1.HNZ. 2021-05-23T13:37:41.81 0.6 undecidable manual S 97 25.8519 50 0.11 49
IV.EL6.EHZ. 2021-05-23T13:37:40.33 3.0 negative manual P -0.49 0
IV.PIEI.HHZ. 2021-05-23T13:37:40.76 1.0 undecidable manual P 348 44.7219 50 0.14 24
IV.FRON.EHZ. 2021-05-23T13:37:40.24 0.6 positive manual P 8 42.1245 50 0.02 49
IV.ARVD.HHZ. 2021-05-23T13:37:40.79 0.1 negative manual P 30 45.8208 50 0 98
IV.CSP1.EHZ. 2021-05-23T13:37:40.71 3.0 undecidable manual P -1.21 0
IV.MURB.HHZ. 2021-05-23T13:37:39.51 0.6 undecidable manual S 322 17.0718 122 0.25 49
IV.FOSV.EHZ. 2021-05-23T13:37:39.73 0.6 undecidable manual S 27 19.0698 119 -0.11 50
IV.FDMO.HHZ. 2021-05-23T13:37:39.40 3.0 positive manual P -1.03 0
IV.SSFR.HHZ. 2021-05-23T13:37:38.95 0.1 positive manual P 17 34.2435 50 -0.06 98
IV.ATVO.HHZ. 2021-05-23T13:37:38.76 0.6 negative manual P 323 33.3444 50 -0.11 49
IV.ATLO.EHZ. 2021-05-23T13:37:37.72 0.1 undecidable manual P 314 27.75 50 -0.29 95
IV.ASSB.HHZ. 2021-05-23T13:37:37.43 0.6 undecidable manual S 178 10.9779 134 -0.16 50
IV.MML1.HNZ. 2021-05-23T13:37:37.66 0.1 undecidable manual P 97 25.8519 50 -0.05 100
IV.CESI.HHZ. 2021-05-23T13:37:37.61 0.6 negative manual P 127 25.3524 50 -0.02 50
IV.ATFO.HHZ. 2021-05-23T13:37:37.89 0.6 positive manual P 345 25.8519 50 0.18 49
IV.ATCC.EHZ. 2021-05-23T13:37:36.33 0.6 undecidable manual S 346 4.995 155 -0.03 52
IV.FOSV.EHZ. 2021-05-23T13:37:36.58 0.6 undecidable manual P 27 19.0698 119 -0.06 50
IV.MURB.HHZ. 2021-05-23T13:37:36.36 1.0 undecidable manual P 322 17.0718 122 0.06 25
IV.ASSB.HHZ. 2021-05-23T13:37:35.45 1.0 undecidable manual P 178 10.9779 134 0.11 25
IV.ATCC.EHZ. 2021-05-23T13:37:34.75 1.0 undecidable manual P 346 4.995 155 0.12 26
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHN. ML:1.7 0.0006437732 0.0832 AML other m 2021-05-23T13:37:37.59
IV.ASSB.HHE. ML:1.6 0.000539 0.16 AML other m 2021-05-23T13:37:38.82
IV.FOSV.EHN. ML:1.4 0.00020072830500000003 0.1024 AML other m 2021-05-23T13:37:40.03
IV.FOSV.EHE. ML:1.4 0.000196826335 0.1216 AML other m 2021-05-23T13:37:39.92
IV.MURB.HHN. ML:1.5 0.000262 0.16 AML other m 2021-05-23T13:37:40.36
IV.MURB.HHE. ML:1.7 0.00040242095 0.1984 AML other m 2021-05-23T13:37:40.35
IV.ATFO.HHN. ML:1.1 0.00007680000000000001 1.12 AML other m 2021-05-23T13:37:41.85
IV.CESI.HHE. ML:1.3 0.00010832719 0.064 AML other m 2021-05-23T13:37:42.31
IV.CESI.HHN. ML:1.2 0.000085941925 0.096 AML other m 2021-05-23T13:37:42.18
IV.ATFO.HHE. ML:1.2 0.000084092875 0.16 AML other m 2021-05-23T13:37:42.61
IV.SSFR.HHE. ML:1.7 0.00021793305 0.2432 AML other m 2021-05-23T13:37:44.44
IV.FDMO.HHE. ML:1.3 0.00008022222500000001 0.1344 AML other m 2021-05-23T13:37:45.44
IV.FDMO.HHN. ML:1.3 0.000071491575 0.1984 AML other m 2021-05-23T13:37:45.44
IV.SSFR.HHN. ML:1.7 0.0002124312 0.224 AML other m 2021-05-23T13:37:44.11
IV.FRON.EHE. ML:1.6 0.0001185 0.16 AML other m 2021-05-23T13:37:47.15
IV.FRON.EHN. ML:1.5 0.000097127165 0.1152 AML other m 2021-05-23T13:37:47.32
IV.PIEI.HHN. ML:1.1 0.00003543093 0.1408 AML other m 2021-05-23T13:37:47.99
IV.PIEI.HHE. ML:1.3 0.00005300000000000001 0.16 AML other m 2021-05-23T13:37:48.17
IV.NRCA.HHN. ML:1.2 0.00004360192 0.1216 AML other m 2021-05-23T13:37:49.00
IV.MGAB.HHE. ML:1.2 0.00004039669 0.16 AML other m 2021-05-23T13:37:51.44
IV.MGAB.HHN. ML:1.5 0.00007345 0.26 AML other m 2021-05-23T13:37:51.25
IV.NRCA.HHE. ML:1.1 0.00003452037 0.1024 AML other m 2021-05-23T13:37:49.47
IV.MURB.HNE. ML:1.7 0.00041531625 0.1728 AML other m 2021-05-23T13:37:40.37
IV.MURB.HNN. ML:1.5 0.0002755646 0.16 AML other m 2021-05-23T13:37:40.28
IV.CESI.HNE. ML:1.3 0.000103630525 0.5376 AML other m 2021-05-23T13:37:49.69
IV.CESI.HNN. ML:1.3 0.00010571114500000001 0.672 AML other m 2021-05-23T13:37:41.10
IV.ATVO.HHE. ML:0.8 0.000031585585 0.1216 AML other m 2021-05-23T13:37:44.97
IV.ATVO.HHN. ML:0.8 0.000031139665 0.3392 AML other m 2021-05-23T13:37:51.60
IV.SSFR.HNE. ML:1.8 0.0002632949 0.16 AML other m 2021-05-23T13:37:44.88
IV.SSFR.HNN. ML:1.7 0.00020950145000000003 0.1344 AML other m 2021-05-23T13:37:45.50
IV.EL6.EHE. ML:1.7 0.0001536881 0.1024 AML other m 2021-05-23T13:37:46.96
IV.EL6.EHN. ML:1.5 0.00009705909849999999 0.1792 AML other m 2021-05-23T13:37:46.89
IV.CSP1.EHE. ML:1.5 0.00010155276 0.2176 AML other m 2021-05-23T13:37:48.26
IV.CSP1.EHN. ML:1.7 0.00015680105 0.256 AML other m 2021-05-23T13:37:48.30
IV.ARVD.HHE. ML:1.2 0.000044907495 0.1408 AML other m 2021-05-23T13:37:47.67
IV.ARVD.HHN. ML:1.1 0.000036544045 0.1216 AML other m 2021-05-23T13:37:47.88
IV.NRCA.HNE. ML:1.6 0.00011680573999999999 0.6208 AML other m 2021-05-23T13:37:53.73
IV.NRCA.HNN. ML:1.8 0.00017220619999999998 0.96 AML other m 2021-05-23T13:38:02.17
IV.MGAB.HNE. ML:1.7 0.000119734065 0.6784 AML other m 2021-05-23T13:37:53.71
IV.MGAB.HNN. ML:1.7 0.00013531690000000003 0.9408 AML other m 2021-05-23T13:37:58.57
IV.NARO.HHE. ML:0.9 0.000018445225000000003 0.0832 AML other m 2021-05-23T13:37:50.04
IV.NARO.HHN. ML:0.8 0.000017331658899999998 0.064 AML other m 2021-05-23T13:37:54.23
IV.BADI.EHE. ML:1.0 0.000025235209999999996 0.1792 AML other m 2021-05-23T13:37:50.52
IV.BADI.EHN. ML:1.0 0.000023824902500000003 0.16 AML other m 2021-05-23T13:37:50.85
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