Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 28-02-2024 and time 18:48:37 (UTC) in region 2 km W Spello (PG)

A magnitude ML 1.2 earthquake occured in region: 2 km W Spello (PG), on

  • 28-02-2024 18:48:37 (UTC)
  • 28-02-2024 19:48:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9900, 12.6450 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
Spello PG 2 8645 8645
Cannara PG 5 4305 12950
Foligno PG 6 57155 70105
Bevagna PG 7 5081 75186
Assisi PG 9 28299 103485
Montefalco PG 11 5679 109164
Gualdo Cattaneo PG 11 6155 115319
Bastia Umbra PG 12 21874 137193
Valtopina PG 12 1398 138591
Bettona PG 13 4367 142958
Trevi PG 15 8469 151427
Torgiano PG 18 6725 158152
Giano dell'Umbria PG 18 3846 161998
Nocera Umbra PG 18 5839 167837
Deruta PG 18 9669 177506
Castel Ritaldi PG 19 3278 180784
Valfabbrica PG 19 3389 184173
Collazzone PG 20 3473 187646

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km NW of Foligno (57155 inhabitants)
25 Km SE of Perugia (166134 inhabitants)
48 Km N of Terni (111501 inhabitants)
77 Km NE of Viterbo (67173 inhabitants)
81 Km SE of Arezzo (99543 inhabitants)
94 Km NW of L'Aquila (69753 inhabitants)
94 Km W of Teramo (54892 inhabitants)
100 Km SW of Ancona (100861 inhabitants)
100 Km SW of Fano (60888 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 1.2 2024-02-28
18:48:37		 42.9897 12.6447 10 2024-02-28
18:56:14		 Sala Sismica INGV-Roma 125601851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-02-28 18:48:37 ± 0.06
Latitude 42.9897 ± 0.0027
Longitude 12.6447 ± 0.0061
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 125601851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 463
Semi-minor axis of confidence ellipse (meter) 129
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 289
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.05396
Epicentral distance of station farthest from the epicenter (degree) 0.50722
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 125601851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-02-28 18:56:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2024-02-28T18:48:48.26 0.3 undecidable manual P 100 56.2992 50 0 93
IV.SSFR.HHZ. 2024-02-28T18:48:47.95 0.3 undecidable manual P 13 50.8158 50 0.54 83
IT.GNU.HGZ. 2024-02-28T18:48:46.19 0.3 undecidable manual S 196 21.4674 114 0.03 99
IV.CESI.HHZ. 2024-02-28T18:48:46.29 0.3 undecidable manual S 85 21.1677 115 0.23 95
IV.MOMA.HNZ. 2024-02-28T18:48:46.01 0.3 undecidable manual S 196 21.4674 114 -0.15 96
IV.ATCC.EHZ. 2024-02-28T18:48:46.19 0.3 undecidable manual S 359 21.6672 114 -0.04 98
IV.MGAB.HHZ. 2024-02-28T18:48:46.36 0.3 undecidable manual P 259 44.1225 50 -0.02 95
IV.SNTG.HHZ. 2024-02-28T18:48:45.28 0.3 undecidable manual P 39 37.9287 50 -0.15 93
IV.FDMO.HHZ. 2024-02-28T18:48:45.04 0.3 undecidable manual P 82 36.2415 50 -0.14 94
IV.NRCA.HHZ. 2024-02-28T18:48:45.82 0.3 undecidable manual P 114 41.9247 50 -0.22 91
IV.MML1.EHZ. 2024-02-28T18:48:44.03 0.3 undecidable manual P 62 29.8479 50 -0.15 95
IT.GNU.HGZ. 2024-02-28T18:48:42.85 0.3 undecidable manual P 196 21.4674 114 0.15 96
IV.CESI.HHZ. 2024-02-28T18:48:42.66 0.3 undecidable manual P 85 21.1677 115 0.01 99
IV.MOMA.HNZ. 2024-02-28T18:48:42.82 0.3 undecidable manual P 196 21.4674 114 0.12 97
IV.ATCC.EHZ. 2024-02-28T18:48:42.72 0.3 undecidable manual P 359 21.6672 114 -0.02 99
IV.ASSB.HHZ. 2024-02-28T18:48:41.69 0.3 undecidable manual S 11 5.994 148 -0.24 97
IV.ASSB.HHZ. 2024-02-28T18:48:40.35 0.3 undecidable manual P 11 5.994 148 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHE. ML:1.7 0.0007765 1.7 AML other m 2024-02-28T18:48:41.94
IV.ASSB.HHN. ML:1.5 0.0005574999999999999 0.9 AML other m 2024-02-28T18:48:42.76
IV.CESI.HHE. ML:1.0 0.00007685 0.42 AML other m 2024-02-28T18:48:47.17
IV.CESI.HHN. ML:1.2 0.0000995 0.8 AML other m 2024-02-28T18:48:47.00
IV.ATCC.EHE. ML:1.2 0.00010829217 0.1536 AML other m 2024-02-28T18:48:46.43
IV.ATCC.EHN. ML:1.2 0.00011340030000000001 0.2688 AML other m 2024-02-28T18:48:46.36
IV.MML1.EHE. ML:1.0 0.000057167205 0.1024 AML other m 2024-02-28T18:48:49.75
IV.MML1.EHN. ML:1.0 0.000049487935 0.1792 AML other m 2024-02-28T18:48:49.64
IV.FDMO.HHE. ML:1.0 0.000040168935 0.2048 AML other m 2024-02-28T18:48:51.71
IV.FDMO.HHN. ML:1.0 0.0000338591915 0.1664 AML other m 2024-02-28T18:48:51.55
IV.SNTG.HHE. ML:0.9 0.000029578935 0.1408 AML other m 2024-02-28T18:48:51.77
IV.SNTG.HHN. ML:1.0 0.00003784219 0.128 AML other m 2024-02-28T18:48:52.04
IV.NRCA.HHE. ML:1.1 0.00003864211 0.1152 AML other m 2024-02-28T18:48:53.41
IV.NRCA.HHN. ML:1.1 0.00003969104 0.128 AML other m 2024-02-28T18:48:52.77
IV.SSFR.HHN. ML:1.4 0.000058416035 0.1536 AML other m 2024-02-28T18:48:56.04
IV.SSFR.HNE. ML:1.7 0.000142454375 0.1408 AML other m 2024-02-28T18:48:56.03
IV.MMO1.EHE. ML:1.3 0.000045802560000000005 1.4976 AML other m 2024-02-28T18:48:57.90
IV.MMO1.EHN. ML:1.2 0.00003897162499999999 0.192 AML other m 2024-02-28T18:48:57.09
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