Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 16-05-2021 and time 14:26:55 (Italy) in region 5 km E Pico (FR)

A magnitude ML 1.8 earthquake occured in region: 5 km E Pico (FR), on

  • 16-05-2021 12:26:55 (UTC)
  • 16-05-2021 14:26:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.4340, 13.6120 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
Pico FR 5 2888 2888
Pontecorvo FR 5 13242 16130
Esperia FR 8 3828 19958
Campodimele LT 8 622 20580
San Giovanni Incarico FR 9 3336 23916
Aquino FR 10 5370 29286
Pastena FR 11 1462 30748
Falvaterra FR 11 554 31302
Lenola LT 13 4189 35491
Castrocielo FR 13 3965 39456
San Giorgio a Liri FR 13 3164 42620
Castelnuovo Parano FR 14 883 43503
Piedimonte San Germano FR 14 6535 50038
Colfelice FR 14 1932 51970
Roccasecca FR 14 7365 59335
Ausonia FR 14 2619 61954
Colle San Magno FR 15 699 62653
Ceprano FR 15 8897 71550
Pignataro Interamna FR 15 2595 74145
Villa Santa Lucia FR 16 2632 76777
Coreno Ausonio FR 17 1644 78421
Itri LT 17 10677 89098
Vallecorsa FR 17 2643 91741
Rocca d'Arce FR 17 959 92700
Fondi LT 17 39809 132509
Spigno Saturnia LT 18 2961 135470
Arce FR 18 5756 141226
Vallemaio FR 18 937 142163
Sant'Apollinare FR 19 1919 144082
Castro dei Volsci FR 19 4781 148863
Santopadre FR 19 1357 150220
Terelle FR 19 422 150642
Cassino FR 19 36142 186784
Formia LT 20 38127 224911

Municipalities with at least 50000 inhabitants

An earthquake occurred to
59 Km E of Latina (125985 inhabitants)
71 Km NW of Aversa (53047 inhabitants)
72 Km NW of Caserta (76326 inhabitants)
75 Km NW of Giugliano in Campania (122974 inhabitants)
75 Km E of Velletri (53303 inhabitants)
77 Km NW of Pozzuoli (81661 inhabitants)
77 Km NW of Marano di Napoli (59874 inhabitants)
82 Km NW of Afragola (65057 inhabitants)
82 Km NW of Casoria (77642 inhabitants)
82 Km E of Anzio (54211 inhabitants)
82 Km E of Aprilia (73446 inhabitants)
84 Km NW of Acerra (59573 inhabitants)
85 Km NW of Napoli (974074 inhabitants)
90 Km SE of Tivoli (56533 inhabitants)
92 Km NW of Portici (55274 inhabitants)
93 Km NW of Ercolano (53709 inhabitants)
96 Km NW of Torre del Greco (86275 inhabitants)
96 Km E of Pomezia (62966 inhabitants)
97 Km SE of Guidonia Montecelio (88673 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 1.8 2021-05-16
12:26:55		 41.4342 13.6122 10 2021-12-29
11:12:37		 Bollettino Sismico Italiano INGV 96550691
Reviewed
Rev100 		ML 1.8 2021-05-16
12:26:55		 41.4337 13.609 10 2021-05-16
12:37:50		 Sala Sismica INGV-Roma 90163731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-16 12:26:55 ± 0.12
Latitude 41.4342 ± 0.0063
Longitude 13.6122 ± 0.0060
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96550691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 675
Semi-minor axis of confidence ellipse (meter) 516
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 14
Circular confidence region, given by single value of horizontal uncertainty (meter) 680.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.65471
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 96550691
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-14 14:37:07

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 90163731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-16 12:37:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MTGR.HHZ. 2021-05-16T12:28:35.39 3.0 undecidable manual Sg 7.2 0
AC.VLO.HHZ. 2021-05-16T12:28:34.45 3.0 undecidable manual Sg 3.93 0
IV.ESAL.HHZ. 2021-05-16T12:28:22.73 3.0 undecidable manual Sg -1.03 0
IV.ZEN8.EHZ. 2021-05-16T12:28:19.51 3.0 undecidable manual Pg 11.95 0
ST.RONC.EHZ. 2021-05-16T12:28:18.97 3.0 undecidable manual Pg 6.92 0
IV.SBPO.HNZ. 2021-05-16T12:28:07.79 3.0 negative manual Pg 7.84 0
IV.TEOL.HHZ. 2021-05-16T12:28:03.40 3.0 undecidable manual Pg 3.86 0
IV.LADO.EHZ. 2021-05-16T12:27:57.16 3.0 undecidable manual Sg -5.49 0
IV.ATMI.HHZ. 2021-05-16T12:27:37.36 3.0 negative manual Pg 4.14 0
IV.CPGN.EHZ. 2021-05-16T12:27:33.56 3.0 undecidable manual Pn -4.41 0
IV.BARO.EHZ. 2021-05-16T12:27:22.58 3.0 undecidable manual Pn -2.96 0
IV.LATB.EHZ. 2021-05-16T12:27:13.07 0.6 undecidable manual S 277 54.4011 50 -0.11 48
IV.PIGN.HHZ. 2021-05-16T12:27:13.12 0.6 undecidable manual S 119 54.0015 50 0.07 48
IV.VVLD.HHZ. 2021-05-16T12:27:11.19 0.6 undecidable manual S 1 48.3183 50 -0.35 46
IT.OPI.HGE. 2021-05-16T12:27:10.14 0.3 undecidable manual S 25 42.0246 50 0.27 71
IV.CERA.HNE. 2021-05-16T12:27:09.49 0.6 undecidable manual S 62 38.3283 50 0.61 43
IV.VENT.EHZ. 2021-05-16T12:27:08.68 0.6 undecidable manual P 193 72.6717 50 -0.01 47
IV.GIUL.HHZ. 2021-05-16T12:27:08.06 0.6 undecidable manual S 295 32.745 50 0.67 43
IV.SGG.HHZ. 2021-05-16T12:27:08.09 0.6 undecidable manual P 94 63.9915 50 0.74 39
IV.POFI.HHZ. 2021-05-16T12:27:07.30 0.3 undecidable manual S 15 32.4453 50 -0.02 76
IV.RNI2.HHN. 2021-05-16T12:27:06.52 0.6 undecidable manual P 56 53.9016 50 0.74 40
IV.MIDA.HHN. 2021-05-16T12:27:06.08 0.6 undecidable manual P 66 58.0974 50 -0.35 45
IV.PIGN.HHZ. 2021-05-16T12:27:05.50 0.3 undecidable manual P 119 54.0015 50 -0.3 69
IV.LATB.EHZ. 2021-05-16T12:27:05.56 0.3 undecidable manual P 277 54.4011 50 -0.31 69
IV.VAGA.HNE. 2021-05-16T12:27:05.88 0.6 undecidable manual P 92 51.8037 50 0.41 45
IV.LRP.EHE. 2021-05-16T12:27:04.79 0.3 undecidable manual S 355 23.6541 112 0.01 77
IT.OPI.HGE. 2021-05-16T12:27:04.10 0.6 undecidable manual P 25 42.0246 50 0.14 49
IV.VVLD.HHZ. 2021-05-16T12:27:04.42 0.1 undecidable manual P 1 48.3183 50 -0.51 89
IV.CERA.HNE. 2021-05-16T12:27:03.35 0.3 undecidable manual P 62 38.3283 50 -0.04 75
IV.POFI.HHZ. 2021-05-16T12:27:02.16 0.3 undecidable manual P 15 32.4453 50 -0.33 71
IV.MCI.EHZ. 2021-05-16T12:27:02.71 0.3 undecidable manual S 69 17.871 119 -0.23 75
IV.GIUL.HHZ. 2021-05-16T12:27:02.45 0.1 undecidable manual P 295 32.745 50 -0.08 100
IV.LIK.EHE.01 2021-05-16T12:27:00.88 0.6 undecidable manual S 329 8.4804 139 0.51 47
IV.LRP.EHE. 2021-05-16T12:27:00.87 0.1 undecidable manual P 355 23.6541 112 -0.15 100
IV.MCI.EHZ. 2021-05-16T12:26:59.76 0.1 undecidable manual P 69 17.871 119 -0.2 100
IV.LIK.EHE.01 2021-05-16T12:26:58.77 0.1 undecidable manual P 329 8.4804 139 0.3 100
IV.PZUN.HHZ. 2021-05-16T12:26:57.66 3.0 undecidable manual P -9.3 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCI.EHN. ML:2.4 0.00188 0.2 AML other m 2021-05-16T12:27:04.49
IV.MCI.EHE. ML:2.4 0.0019450000000000001 0.18 AML other m 2021-05-16T12:27:04.65
IV.POFI.HHE. ML:1.6 0.000187 0.24 AML other m 2021-05-16T12:27:08.72
IV.POFI.HHN. ML:1.5 0.00015150000000000002 1.58 AML other m 2021-05-16T12:27:09.90
IV.VVLD.HHE. ML:1.9 0.0002155 0.4 AML other m 2021-05-16T12:27:13.25
IV.VVLD.HNE. ML:1.9 0.00020602415000000002 0.4992 AML other m 2021-05-16T12:27:13.51
IV.VVLD.HHN. ML:1.8 0.00015900000000000002 1.16 AML other m 2021-05-16T12:27:14.05
IV.PIGN.HHE. ML:1.8 0.000141 0.3 AML other m 2021-05-16T12:27:15.29
IV.VVLD.HNN. ML:1.8 0.00019648955000000002 0.8704 AML other m 2021-05-16T12:27:16.30
IV.PIGN.HHN. ML:1.6 0.00009445 0.92 AML other m 2021-05-16T12:27:17.16
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