Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 23-05-2021 and time 14:53:00 (UTC) in region 2 km NE Cerreto di Spoleto (PG)

A magnitude ML 1.5 earthquake occured in region: 2 km NE Cerreto di Spoleto (PG), on

  • 23-05-2021 14:53:00 (UTC)
  • 23-05-2021 16:53:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8310, 12.9390 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
Cerreto di Spoleto PG 2 1075 1075
Sellano PG 7 1079 2154
Vallo di Nera PG 9 364 2518
Preci PG 10 724 3242
Campello sul Clitunno PG 13 2442 5684
Poggiodomo PG 13 117 5801
Norcia PG 13 4957 10758
Sant'Anatolia di Narco PG 14 564 11322
Cascia PG 14 3217 14539
Scheggino PG 16 461 15000
Trevi PG 16 8469 23469
Visso MC 17 1107 24576
Castelsantangelo sul Nera MC 19 281 24857
Monte Cavallo MC 19 145 25002
Spoleto PG 20 38218 63220
Monteleone di Spoleto PG 20 599 63819

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km SE of Foligno (57155 inhabitants)
38 Km NE of Terni (111501 inhabitants)
54 Km SE of Perugia (166134 inhabitants)
65 Km NW of L'Aquila (69753 inhabitants)
65 Km W of Teramo (54892 inhabitants)
82 Km NE of Viterbo (67173 inhabitants)
94 Km N of Guidonia Montecelio (88673 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
99 Km SW of Ancona (100861 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 1.5 2021-05-23
14:53:00		 42.8312 12.939 10 2021-12-29
11:12:02		 Bollettino Sismico Italiano INGV 90665681
Reviewed
Rev100 		ML 1.5 2021-05-23
14:53:00		 42.8307 12.9408 9 2021-05-23
15:23:20		 Sala Sismica INGV-Roma 90417921
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-23 14:53:00 ± 0.04
Latitude 42.8312 ± 0.0018
Longitude 12.9390 ± 0.0037
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 90665681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 248
Semi-minor axis of confidence ellipse (meter) 138
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 99
Circular confidence region, given by single value of horizontal uncertainty (meter) 250.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 45
Number of associated phases, regardless of their use for origin computation 48
Number of defining phases 48
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.12860
Epicentral distance of station farthest from the epicenter (degree) 0.52700
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 90417921
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-23 15:23:20

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 36
Type of magnitude ML
Reference to an origin 90665681
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-31 15:30:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-05-23T14:53:19.03 0.1 undecidable manual S 13 56.7987 50 0.33 87
IV.MURB.HHZ. 2021-05-23T14:53:19.87 0.1 undecidable manual S 325 58.497 50 0.71 77
IV.MF5.EHZ. 2021-05-23T14:53:16.27 0.1 undecidable manual S 67 45.7209 50 0.52 85
IV.ATCC.EHZ. 2021-05-23T14:53:16.12 0.1 undecidable manual S 328 46.1205 50 0.26 90
IV.SMA1.EHN. 2021-05-23T14:53:14.61 0.6 undecidable manual S 124 39.2274 50 0.61 42
IV.RM33.EHZ. 2021-05-23T14:53:14.80 0.1 undecidable manual S 148 42.2244 50 0 96
IV.CSP1.EHZ. 2021-05-23T14:53:13.21 0.1 undecidable manual S 37 36.1416 50 0.04 96
IV.CESX.HHZ. 2021-05-23T14:53:13.69 0.1 undecidable manual S 229 37.8288 50 0.05 96
IV.PF6.EHN. 2021-05-23T14:53:13.92 0.6 undecidable manual S 31 39.8268 50 -0.25 46
IV.ASSB.HHZ. 2021-05-23T14:53:12.02 0.1 undecidable manual S 316 32.745 50 -0.24 93
IV.SEF1.HNN. 2021-05-23T14:53:12.74 0.6 undecidable manual S 1 35.0427 50 -0.15 47
IV.MML1.HNE. 2021-05-23T14:53:11.63 0.6 undecidable manual S 5 31.4463 50 -0.3 46
IV.ARRO.EHZ. 2021-05-23T14:53:11.60 0.6 undecidable manual S 207 31.3464 50 -0.29 46
IV.MMO1.EHZ. 2021-05-23T14:53:11.91 0.3 undecidable manual S 76 32.4453 50 -0.28 69
IV.MOMA.HHZ. 2021-05-23T14:53:11.71 0.1 undecidable manual S 264 30.1476 50 0.12 96
IV.MURB.HHZ. 2021-05-23T14:53:11.38 0.1 negative manual P 325 58.497 50 0.01 93
IV.LNSS.HHZ. 2021-05-23T14:53:10.25 0.1 undecidable manual S 162 26.6511 110 -0.29 93
IV.EL6.EHZ. 2021-05-23T14:53:10.89 0.6 undecidable manual P 13 56.7987 50 -0.22 45
IV.ATCC.EHZ. 2021-05-23T14:53:09.25 0.6 undecidable manual P 328 46.1205 50 -0.21 46
IT.FOPC.HGZ. 2021-05-23T14:53:09.97 0.6 undecidable manual S 309 24.5532 111 0.1 49
IV.MF5.EHZ. 2021-05-23T14:53:09.68 0.6 undecidable manual P 67 45.7209 50 0.28 45
IV.FDMO.HHZ. 2021-05-23T14:53:09.94 0.1 undecidable manual S 28 25.752 110 -0.32 93
IV.MC2.EHZ. 2021-05-23T14:53:09.40 0.6 undecidable manual S 66 22.1556 113 0.3 47
IV.FEMA.HNZ. 2021-05-23T14:53:08.01 0.6 undecidable manual S 32 17.0718 119 0.5 45
IV.PF6.EHN. 2021-05-23T14:53:08.22 0.6 undecidable manual P 31 39.8268 50 -0.27 46
IV.CESI.HHZ. 2021-05-23T14:53:08.26 0.1 undecidable manual S 352 19.4694 116 0.01 100
IV.SMA1.EHN. 2021-05-23T14:53:08.42 0.6 undecidable manual P 124 39.2274 50 0.03 48
IV.RM33.EHZ. 2021-05-23T14:53:08.81 0.6 undecidable manual P 148 42.2244 50 -0.05 48
IV.GAVE.EHZ. 2021-05-23T14:53:07.35 0.1 undecidable manual S 193 15.873 121 0.22 96
IV.MOMA.HHZ. 2021-05-23T14:53:07.32 0.6 undecidable manual P 264 30.1476 50 0.32 46
IV.CSP1.EHZ. 2021-05-23T14:53:07.68 0.1 positive manual P 37 36.1416 50 -0.23 93
IT.MTCL.HGZ. 2021-05-23T14:53:07.83 0.6 undecidable manual S 15 18.7701 117 -0.18 48
IV.ASSB.HHZ. 2021-05-23T14:53:07.08 0.6 undecidable manual P 316 32.745 50 -0.31 46
IV.CESX.HHZ. 2021-05-23T14:53:07.87 0.1 positive manual P 229 37.8288 50 -0.31 91
IV.ARRO.EHZ. 2021-05-23T14:53:07.04 0.1 undecidable manual P 207 31.3464 50 -0.14 95
IV.MMO1.EHZ. 2021-05-23T14:53:07.12 0.3 undecidable manual P 76 32.4453 50 -0.22 70
IV.SEF1.HNN. 2021-05-23T14:53:07.50 0.6 undecidable manual P 1 35.0427 50 -0.25 46
IV.FDMO.HHZ. 2021-05-23T14:53:06.03 0.1 positive manual P 28 25.752 110 -0.2 95
IV.LNSS.HHZ. 2021-05-23T14:53:06.31 0.1 positive manual P 162 26.6511 110 -0.08 97
IV.MML1.HNE. 2021-05-23T14:53:06.91 0.1 undecidable manual P 5 31.4463 50 -0.28 92
IV.NRCA.HHZ. 2021-05-23T14:53:06.72 0.1 undecidable manual S 89 14.2746 124 0.05 100
IV.MC2.EHZ. 2021-05-23T14:53:05.58 0.1 undecidable manual P 66 22.1556 113 0.02 99
IV.CESI.HHZ. 2021-05-23T14:53:05.17 0.1 positive manual P 352 19.4694 116 0.1 98
IT.FOPC.HGZ. 2021-05-23T14:53:05.83 1.0 undecidable manual P 309 24.5532 111 -0.18 24
IV.NRCA.HHZ. 2021-05-23T14:53:04.29 0.1 negative manual P 89 14.2746 124 0.13 98
IV.GAVE.EHZ. 2021-05-23T14:53:04.75 0.1 positive manual P 193 15.873 121 0.32 94
IV.FEMA.HNZ. 2021-05-23T14:53:04.73 0.1 undecidable manual P 32 17.0718 119 0.09 99
IT.MTCL.HGZ. 2021-05-23T14:53:04.87 0.1 undecidable manual P 15 18.7701 117 -0.06 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2.1 0.0013369999999999999 0.14 AML other m 2021-05-23T14:53:06.77
IV.NRCA.HNN. ML:2.0 0.0011855 0.1 AML other m 2021-05-23T14:53:06.77
IV.NRCA.HHE. ML:2.0 0.000946 0.4 AML other m 2021-05-23T14:53:06.98
IV.NRCA.HNE. ML:2.0 0.0009115 0.4 AML other m 2021-05-23T14:53:06.98
IV.GAVE.EHE. ML:2.0 0.0008935 0.12 AML other m 2021-05-23T14:53:07.70
IV.GAVE.EHN. ML:1.8 0.0006145 0.34 AML other m 2021-05-23T14:53:07.92
IV.CESI.HHN. ML:1.7 0.0003745 0.28 AML other m 2021-05-23T14:53:08.40
IV.CESI.HHE. ML:1.3 0.00016499999999999997 0.32 AML other m 2021-05-23T14:53:08.56
IV.FDMO.HHN. ML:1.2 0.0000847 0.12 AML other m 2021-05-23T14:53:10.23
IV.FDMO.HHE. ML:1.6 0.0002275 0.16 AML other m 2021-05-23T14:53:10.30
IV.LNSS.HHE. ML:1.9 0.00047850000000000003 0.34 AML other m 2021-05-23T14:53:10.41
IV.LNSS.HHN. ML:1.6 0.00023449999999999998 0.12 AML other m 2021-05-23T14:53:10.48
IV.MOMA.HHE. ML:1.4 0.00012145 1.02 AML other m 2021-05-23T14:53:12.73
IV.ASSB.HHN. ML:1.3 0.00008790000000000001 0.36 AML other m 2021-05-23T14:53:12.10
IV.MOMA.HHN. ML:1.2 0.00007264999999999999 0.16 AML other m 2021-05-23T14:53:12.65
IV.ASSB.HHE. ML:1.2 0.00006505 1.04 AML other m 2021-05-23T14:53:12.98
IV.CESX.HHE. ML:1.1 0.000051750000000000004 0.42 AML other m 2021-05-23T14:53:14.73
IV.CESX.HHN. ML:1.0 0.000038900000000000004 0.42 AML other m 2021-05-23T14:53:16.00
IV.ATCC.EHN. ML:1.4 0.00007155 1.42 AML other m 2021-05-23T14:53:16.87
IV.ATCC.EHE. ML:1.4 0.00006709999999999999 1.2 AML other m 2021-05-23T14:53:16.38
IV.GAVE.HNN. ML:1.4 0.0002082359 0.192 AML other m 2021-05-23T14:53:07.91
IV.CESI.HNN. ML:1.6 0.0002932264 0.288 AML other m 2021-05-23T14:53:08.40
IV.CESI.HNE. ML:1.3 0.00015519275 0.1152 AML other m 2021-05-23T14:53:09.49
IV.LNSS.HNE. ML:1.8 0.0003285893 0.0896 AML other m 2021-05-23T14:53:10.42
IV.LNSS.HNN. ML:1.6 0.00024840839999999996 0.1408 AML other m 2021-05-23T14:53:10.49
IV.MOMA.HNE. ML:1.4 0.00011966621999999999 0.1792 AML other m 2021-05-23T14:53:12.74
IV.MOMA.HNN. ML:1.2 0.000085630925 0.48 AML other m 2021-05-23T14:53:12.18
IV.CSP1.EHE. ML:1.4 0.00009197937000000001 0.1216 AML other m 2021-05-23T14:53:13.55
IV.CSP1.EHN. ML:1.4 0.00010767933 0.1216 AML other m 2021-05-23T14:53:13.51
IV.RM33.EHE. ML:1.1 0.000041097435 0.2816 AML other m 2021-05-23T14:53:15.14
IV.RM33.HNN. ML:1.4 0.000074494825 1.4016 AML other m 2021-05-23T14:53:15.27
IV.RM33.EHN. ML:1.2 0.00004763294 0.1856 AML other m 2021-05-23T14:53:15.28
IV.EL6.EHN. ML:1.4 0.00006153729499999999 0.2176 AML other m 2021-05-23T14:53:19.54
IV.EL6.EHE. ML:1.5 0.0000699684905 0.1216 AML other m 2021-05-23T14:53:20.75
IV.MURB.HHN. ML:1.3 0.000040992635 0.3584 AML other m 2021-05-23T14:53:24.15
IV.MURB.HHE. ML:1.3 0.00004716588 0.1792 AML other m 2021-05-23T14:53:21.71
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