Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 24-02-2021 and time 01:58:54 (UTC) in region 6 km NE Campoli Appennino (FR)

A magnitude ML 0.8 earthquake occured in region: 6 km NE Campoli Appennino (FR), on

  • 24-02-2021 01:58:54 (UTC)
  • 24-02-2021 02:58:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7810, 13.7210 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
Campoli Appennino FR 6 1725 1725
Pescosolido FR 6 1555 3280
Pescasseroli AQ 7 2203 5483
Opi AQ 9 420 5903
Posta Fibreno FR 10 1139 7042
Alvito FR 11 2713 9755
Sora FR 11 26144 35899
Broccostella FR 11 2741 38640
San Donato Val di Comino FR 11 2107 40747
Vicalvi FR 12 783 41530
Villavallelonga AQ 13 919 42449
Fontechiari FR 13 1303 43752
Balsorano AQ 13 3569 47321
Gallinaro FR 15 1269 48590
Bisegna AQ 16 223 48813
Collelongo AQ 16 1233 50046
Settefrati FR 16 728 50774
Isola del Liri FR 17 11715 62489
Casalvieri FR 17 2698 65187
Villetta Barrea AQ 17 653 65840
Lecce nei Marsi AQ 17 1702 67542
Arpino FR 17 7262 74804
San Vincenzo Valle Roveto AQ 17 2347 77151
Casalattico FR 18 574 77725
Castelliri FR 18 3454 81179
Civitella Alfedena AQ 18 296 81475
Scanno AQ 19 1847 83322
Atina FR 19 4316 87638
Picinisco FR 19 1218 88856
Gioia dei Marsi AQ 20 1989 90845
Villalago AQ 20 568 91413

Municipalities with at least 50000 inhabitants

An earthquake occurred to
69 Km SE of L'Aquila (69753 inhabitants)
73 Km SW of Chieti (51815 inhabitants)
76 Km E of Latina (125985 inhabitants)
79 Km E of Velletri (53303 inhabitants)
79 Km E of Tivoli (56533 inhabitants)
86 Km E of Guidonia Montecelio (88673 inhabitants)
86 Km SW of Pescara (121014 inhabitants)
89 Km SW of Montesilvano (53738 inhabitants)
91 Km E of Aprilia (73446 inhabitants)
94 Km NW of Caserta (76326 inhabitants)
98 Km S of Teramo (54892 inhabitants)
98 Km E of Anzio (54211 inhabitants)
99 Km NW of Aversa (53047 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 0.8 2021-02-24
01:58:54		 41.7813 13.7207 11 2021-02-24
03:17:45		 Sala Sismica INGV-Roma 87427811
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-24 01:58:54 ± 0.09
Latitude 41.7813 ± 0.0054
Longitude 13.7207 ± 0.0084
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87427811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 666
Semi-minor axis of confidence ellipse (meter) 566
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 104
Circular confidence region, given by single value of horizontal uncertainty (meter) 670.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.06385
Epicentral distance of station farthest from the epicenter (degree) 0.41279
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 87427811
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-24 03:17:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2021-02-24T01:59:08.67 0.3 undecidable manual S 238 45.8208 50 -0.44 65
IV.PTQR.HHZ. 2021-02-24T01:59:06.96 0.6 undecidable manual S 315 37.5291 50 0.06 48
IV.LIK.EHZ. 2021-02-24T01:59:06.21 0.6 undecidable manual S 203 33.9438 50 0.27 46
IV.MCI.EHZ. 2021-02-24T01:59:05.43 0.6 undecidable manual S 167 33.1446 50 -0.28 46
IV.CERA.HHZ. 2021-02-24T01:59:05.43 0.6 undecidable manual S 129 31.9458 50 0.03 49
IV.INTR.HHZ. 2021-02-24T01:59:04.60 0.6 undecidable manual S 31 29.748 50 -0.2 47
IV.GIUL.HHZ. 2021-02-24T01:59:02.40 0.6 undecidable manual P 238 45.8208 50 -0.46 43
IV.PTQR.HHZ. 2021-02-24T01:59:02.43 0.1 undecidable manual P 315 37.5291 50 0.85 76
IV.GUAR.HNZ. 2021-02-24T01:59:01.82 0.1 undecidable manual P 273 33.8439 50 0.82 77
IT.SULA.HNZ. 2021-02-24T01:59:01.27 0.1 undecidable manual P 26 36.2415 50 -0.1 95
IV.LIK.EHZ. 2021-02-24T01:59:01.00 0.1 undecidable manual P 203 33.9438 50 -0.03 97
IV.LRP.EHZ. 2021-02-24T01:59:01.32 0.6 undecidable manual S 217 18.5703 120 -0.41 46
IV.INTR.HHZ. 2021-02-24T01:59:00.19 0.1 undecidable manual P 31 29.748 50 -0.18 95
IT.SULP.HGZ. 2021-02-24T01:59:00.98 0.1 undecidable manual P 27 37.7289 50 -0.63 83
IV.MCI.EHZ. 2021-02-24T01:59:00.93 0.1 undecidable manual P 167 33.1446 50 0.04 97
IV.CERA.HHZ. 2021-02-24T01:59:00.95 0.1 undecidable manual P 129 31.9458 50 0.23 93
IV.VVLD.HHZ. 2021-02-24T01:58:59.71 0.6 undecidable manual S 321 12.6762 130 -0.34 47
IT.OPI.HGZ. 2021-02-24T01:58:59.26 0.3 undecidable manual S 93 9.0798 139 0.11 75
IV.LRP.EHZ. 2021-02-24T01:58:58.28 0.1 undecidable manual P 217 18.5703 120 -0.31 94
IV.POFI.HHZ. 2021-02-24T01:58:58.83 0.6 undecidable manual S 186 7.0929 146 0.09 50
IT.OPI.HGZ. 2021-02-24T01:58:57.32 0.1 undecidable manual P 93 9.0798 139 0.22 98
IV.VVLD.HHZ. 2021-02-24T01:58:57.55 0.1 undecidable manual P 321 12.6762 130 -0.07 100
IV.POFI.HHZ. 2021-02-24T01:58:57.06 0.1 negative manual P 186 7.0929 146 0.19 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.POFI.HHN. ML:0.8 0.00008535000000000001 1.62 AML other m 2021-02-24T01:58:58.11
IV.POFI.HHE. ML:0.8 0.0001009 0.98 AML other m 2021-02-24T01:58:59.87
IV.VVLD.HHE. ML:0.8 0.0000686 0.18 AML other m 2021-02-24T01:59:00.11
IV.VVLD.HHN. ML:0.8 0.0000694 0.6 AML other m 2021-02-24T01:59:00.32
IV.LRP.EHE. ML:1.0 0.0000741 0.78 AML other m 2021-02-24T01:59:01.65
IV.LRP.EHN. ML:0.4 0.000022449999999999997 0.18 AML other m 2021-02-24T01:59:01.83
IV.POFI.HNE. ML:0.9 0.00012536041 0.28 AML other m 2021-02-24T01:58:59.73
IV.POFI.HNN. ML:0.9 0.000110904565 0.32 AML other m 2021-02-24T01:58:58.93
IV.VVLD.HNE. ML:1.0 0.0001120145 1.0688 AML other m 2021-02-24T01:59:02.16
IV.VVLD.HNN. ML:1.0 0.00011201450499999999 0.4096 AML other m 2021-02-24T01:59:00.33
IV.INTR.HHE. ML:0.6 0.0000218059635 0.24 AML other m 2021-02-24T01:59:04.94
IV.INTR.HHN. ML:0.7 0.0000266555085 0.12 AML other m 2021-02-24T01:59:07.41
IV.GIUL.HHE. ML:0.7 0.0000157633085 0.2 AML other m 2021-02-24T01:59:09.15
IV.GIUL.HHN. ML:1.0 0.000029013955 0.2208 AML other m 2021-02-24T01:59:09.34
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