Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 21-02-2024 and time 14:22:55 (UTC) in region 2 km NE Spoleto (PG)

A magnitude ML 1.7 earthquake occured in region: 2 km NE Spoleto (PG), on

  • 21-02-2024 14:22:55 (UTC)
  • 21-02-2024 15:22:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7510, 12.7600 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.

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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
Spoleto PG 2 38218 38218
Sant'Anatolia di Narco PG 7 564 38782
Scheggino PG 7 461 39243
Campello sul Clitunno PG 8 2442 41685
Vallo di Nera PG 9 364 42049
Castel Ritaldi PG 11 3278 45327
Trevi PG 14 8469 53796
Ferentillo TR 15 1913 55709
Cerreto di Spoleto PG 15 1075 56784
Poggiodomo PG 15 117 56901
Montefranco TR 17 1276 58177
Giano dell'Umbria PG 18 3846 62023
Montefalco PG 18 5679 67702
Arrone TR 19 2763 70465
Acquasparta TR 19 4778 75243
Monteleone di Spoleto PG 19 599 75842
Massa Martana PG 20 3770 79612
Polino TR 20 233 79845

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NE of Terni (111501 inhabitants)
23 Km S of Foligno (57155 inhabitants)
50 Km SE of Perugia (166134 inhabitants)
65 Km NE of Viterbo (67173 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
78 Km W of Teramo (54892 inhabitants)
83 Km N of Guidonia Montecelio (88673 inhabitants)
88 Km N of Tivoli (56533 inhabitants)
98 Km N of Roma (2864731 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 1.7 2024-02-21
14:22:55		 42.7507 12.7598 10 2024-02-21
14:32:28		 Sala Sismica INGV-Roma 125424021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-02-21 14:22:55 ± 0.06
Latitude 42.7507 ± 0.0036
Longitude 12.7598 ± 0.0049
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 125424021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 380
Semi-minor axis of confidence ellipse (meter) 360
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 214
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 22
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) 0.47124
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 34
Type of magnitude ML
Reference to an origin 125424021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-02-21 14:32:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SIRI.HNZ. 2024-02-21T14:24:42.31 3.0 undecidable manual Sg 7.98 0
GU.RNCA.HHZ. 2024-02-21T14:24:32.53 3.0 undecidable manual Sn 2.34 0
IV.PCN.HNZ. 2024-02-21T14:24:31.82 3.0 undecidable manual Sg 4.25 0
IV.CDRU.HHZ. 2024-02-21T14:24:30.06 3.0 undecidable manual Sg 8.19 0
CH.PLONS.HHZ. 2024-02-21T14:24:27.39 3.0 undecidable manual Pg 15.96 0
GE.MATE.HHZ. 2024-02-21T14:24:00.32 3.0 undecidable manual Pg 7.02 0
IV.VAGA.HHZ. 2024-02-21T14:23:50.95 3.0 undecidable manual Sg -0.93 0
IV.IMOL.EHZ. 2024-02-21T14:23:48.90 3.0 undecidable manual Sn -4.01 0
IV.IMOL.HNZ. 2024-02-21T14:23:29.16 3.0 negative manual Pg 1.05 0
IV.SFI.EHZ. 2024-02-21T14:23:23.66 3.0 negative manual P 1.46 0
IV.ARVD.HHZ. 2024-02-21T14:23:22.15 3.0 undecidable manual S -1.63 0
IV.GUMA.HHZ. 2024-02-21T14:23:14.77 3.0 undecidable manual S 0.43 0
IV.CSP1.EHZ. 2024-02-21T14:23:12.30 0.6 undecidable manual S 44 52.3032 50 0.53 42
IV.SSFR.HNZ. 2024-02-21T14:23:10.85 3.0 undecidable manual P 0.3 0
IV.FDMO.HHZ. 2024-02-21T14:23:09.03 0.6 undecidable manual S 40 41.4252 50 0.18 46
IV.TERO.HHZ. 2024-02-21T14:23:07.95 3.0 undecidable manual P -1.4 0
IV.SRES.HHZ. 2024-02-21T14:23:07.34 3.0 negative manual P -2.34 0
IV.ASSB.HHZ. 2024-02-21T14:23:07.01 0.6 undecidable manual S 346 33.4443 50 0.29 46
IV.LNSS.HHZ. 2024-02-21T14:23:05.04 0.3 undecidable manual S 126 28.1496 50 -0.28 69
IV.NRCA.HHZ. 2024-02-21T14:23:05.91 0.3 undecidable manual S 72 30.2475 50 0.02 73
IV.CESI.HHZ. 2024-02-21T14:23:05.95 0.3 undecidable manual S 23 30.5472 50 -0.01 73
IV.CSP1.EHZ. 2024-02-21T14:23:04.73 0.3 undecidable manual P 44 52.3032 50 0.03 70
IV.SMA1.EHZ. 2024-02-21T14:23:04.33 3.0 positive manual P -0.81 0
IV.MMO1.EHZ. 2024-02-21T14:23:04.12 3.0 negative manual P -0.52 0
IV.RM33.EHZ. 2024-02-21T14:23:03.84 3.0 negative manual P -1.19 0
IV.FDMO.HHZ. 2024-02-21T14:23:03.25 0.1 undecidable manual P 40 41.4252 50 0.24 91
IV.MML1.EHZ. 2024-02-21T14:23:03.38 3.0 negative manual P -0.48 0
IV.ARRO.EHE. 2024-02-21T14:23:03.02 0.6 undecidable manual S 179 19.0698 117 0.59 43
IV.CESX.HHE. 2024-02-21T14:23:02.83 0.6 undecidable manual S 222 21.1677 115 -0.28 47
IV.ASSB.HHZ. 2024-02-21T14:23:01.58 0.1 undecidable manual P 346 33.4443 50 -0.2 93
IV.NRCA.HHZ. 2024-02-21T14:23:01.08 0.1 undecidable manual P 72 30.2475 50 -0.22 93
IV.MOMA.HHZ. 2024-02-21T14:23:01.54 0.3 undecidable manual S 291 16.5723 120 -0.14 73
IV.CESI.HHZ. 2024-02-21T14:23:01.23 0.1 undecidable manual P 23 30.5472 50 -0.11 95
IV.LNSS.HHZ. 2024-02-21T14:23:00.77 0.1 undecidable manual P 126 28.1496 50 -0.2 94
IV.GAVE.EHZ. 2024-02-21T14:23:00.45 0.3 undecidable manual S 121 12.6762 127 -0.12 73
ZO.PDN12.EHE. 2024-02-21T14:23:00.99 0.6 undecidable manual S 59 14.9739 123 -0.22 48
IV.ARRO.EHE. 2024-02-21T14:22:59.55 0.3 undecidable manual P 179 19.0698 117 0.25 71
IV.CESX.HHE. 2024-02-21T14:22:59.91 0.3 undecidable manual P 222 21.1677 115 0.22 71
IV.MOMA.HHZ. 2024-02-21T14:22:58.79 0.1 undecidable manual P 291 16.5723 120 -0.08 98
ZO.PDN12.EHE. 2024-02-21T14:22:58.69 0.1 undecidable manual P 59 14.9739 123 0.09 98
IV.GAVE.EHZ. 2024-02-21T14:22:58.25 0.1 undecidable manual P 121 12.6762 127 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:2.2 0.00181 0.84 AML other m 2024-02-21T14:23:01.36
IV.GAVE.HNE. ML:2.2 0.001702887 0.2624 AML other m 2024-02-21T14:23:01.36
IV.GAVE.EHN. ML:2.1 0.0012833187500000001 0.2048 AML other m 2024-02-21T14:23:01.82
IV.GAVE.HNN. ML:1.6 0.0004334571 0.2048 AML other m 2024-02-21T14:23:01.82
IV.MOMA.HHN. ML:1.6 0.0003485 0.26 AML other m 2024-02-21T14:23:02.06
IV.MOMA.HNE. ML:1.8 0.0004965 0.22 AML other m 2024-02-21T14:23:02.68
IV.MOMA.HHE. ML:1.6 0.0003875 0.22 AML other m 2024-02-21T14:23:02.57
IV.MOMA.HNN. ML:1.6 0.00035 0.5 AML other m 2024-02-21T14:23:02.95
IV.LNSS.HHE. ML:2.0 0.0005385 0.6 AML other m 2024-02-21T14:23:05.51
IV.CESI.HHN. ML:1.9 0.0003785 1.16 AML other m 2024-02-21T14:23:06.08
IV.CESI.HHE. ML:1.6 0.00018129645 0.2176 AML other m 2024-02-21T14:23:06.20
IV.NRCA.HHN. ML:1.6 0.00020750000000000003 0.1 AML other m 2024-02-21T14:23:07.13
IV.LNSS.HHN. ML:2.0 0.0005405 0.4 AML other m 2024-02-21T14:23:07.18
IV.ASSB.HHE. ML:1.4 0.00011649999999999999 0.22 AML other m 2024-02-21T14:23:07.50
IV.NRCA.HHE. ML:1.7 0.000246 0.14 AML other m 2024-02-21T14:23:07.55
IV.ASSB.HHN. ML:1.6 0.00017449999999999999 0.22 AML other m 2024-02-21T14:23:07.52
IV.FDMO.HHN. ML:1.5 0.00010570000000000001 0.36 AML other m 2024-02-21T14:23:10.39
IV.MML1.EHE. ML:1.6 0.000125 1.72 AML other m 2024-02-21T14:23:10.98
IV.RM33.HNN. ML:1.8 0.00016314999999999998 0.5 AML other m 2024-02-21T14:23:11.32
IV.FDMO.HHE. ML:1.5 0.0001168 0.46 AML other m 2024-02-21T14:23:11.64
IV.RM33.EHE. ML:1.6 0.0001115 0.14 AML other m 2024-02-21T14:23:11.88
IV.RM33.HNE. ML:1.9 0.000225 0.84 AML other m 2024-02-21T14:23:11.54
IV.SMA1.EHE. ML:1.7 0.0001365 1.4 AML other m 2024-02-21T14:23:12.87
IV.CSP1.EHE. ML:1.9 0.00017890345000000002 0.2944 AML other m 2024-02-21T14:23:12.84
IV.RM33.EHN. ML:1.6 0.000127 0.42 AML other m 2024-02-21T14:23:13.50
IV.SMA1.EHN. ML:1.7 0.00013000000000000002 1.06 AML other m 2024-02-21T14:23:13.41
IV.CSP1.EHN. ML:1.8 0.00017463020000000001 0.3584 AML other m 2024-02-21T14:23:12.77
IV.MML1.EHN. ML:1.4 0.0000698 0.28 AML other m 2024-02-21T14:23:13.97
IV.MMO1.EHE. ML:1.6 0.0001105 0.9 AML other m 2024-02-21T14:23:14.45
IV.MMO1.EHN. ML:1.6 0.00009385 0.22 AML other m 2024-02-21T14:23:14.25
IV.TERO.HHN. ML:1.3 0.00003205 1.04 AML other m 2024-02-21T14:23:18.08
IV.GUMA.HHN. ML:1.8 0.000135 0.4 AML other m 2024-02-21T14:23:19.49
IV.TERO.HHE. ML:1.4 0.000041599999999999995 0.44 AML other m 2024-02-21T14:23:20.35
IV.CESI.HNE. ML:1.5 0.00015992396 0.2304 AML other m 2024-02-21T14:23:06.21
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