Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 23-05-2020 and time 01:51:21 (Italy) in region 1 km W San Marco la Catola (FG)

A magnitude ML 1.5 earthquake occured in region: 1 km W San Marco la Catola (FG), on

  • 22-05-2020 23:51:21 (UTC)
  • 23-05-2020 01:51:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.5280, 14.9980 at 24 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
San Marco la Catola FG 1 1012 1012
Celenza Valfortore FG 4 1598 2610
Volturara Appula FG 6 430 3040
Tufara CB 7 925 3965
Gambatesa CB 7 1464 5429
Carlantino FG 8 980 6409
Motta Montecorvino FG 10 730 7139
Macchia Valfortore CB 10 576 7715
Castelvetere in Val Fortore BN 11 1240 8955
Pietramontecorvino FG 11 2721 11676
Castelnuovo della Daunia FG 12 1445 13121
Volturino FG 12 1743 14864
Pietracatella CB 12 1375 16239
Casalvecchio di Puglia FG 12 1877 18116
San Bartolomeo in Galdo BN 13 4867 22983
Casalnuovo Monterotaro FG 13 1556 24539
Riccia CB 14 5262 29801
Baselice BN 15 2397 32198
Sant'Elia a Pianisi CB 15 1818 34016
Alberona FG 15 985 35001
Colletorto CB 15 1938 36939
Jelsi CB 17 1781 38720
San Giuliano di Puglia CB 18 1042 39762
Monacilioni CB 18 523 40285
Roseto Valfortore FG 19 1074 41359
Foiano di Val Fortore BN 20 1410 42769

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km SW of San Severo (53905 inhabitants)
46 Km W of Foggia (151991 inhabitants)
48 Km NE of Benevento (60091 inhabitants)
70 Km N of Avellino (54857 inhabitants)
75 Km NE of Caserta (76326 inhabitants)
78 Km W of Manfredonia (57279 inhabitants)
81 Km W of Cerignola (58396 inhabitants)
83 Km NE of Acerra (59573 inhabitants)
88 Km NE of Afragola (65057 inhabitants)
90 Km NE of Aversa (53047 inhabitants)
91 Km NE of Casoria (77642 inhabitants)
94 Km NE of Giugliano in Campania (122974 inhabitants)
95 Km NE of Portici (55274 inhabitants)
95 Km N of Cava de' Tirreni (53659 inhabitants)
95 Km NE of Scafati (50787 inhabitants)
96 Km N of Salerno (135261 inhabitants)
97 Km NE of Ercolano (53709 inhabitants)
97 Km NE of Marano di Napoli (59874 inhabitants)
98 Km NE of Torre del Greco (86275 inhabitants)
99 Km NE of Napoli (974074 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 2020-05-22
23:51:21		 41.5277 14.9983 25 2020-11-19
12:36:47		 Bollettino Sismico Italiano INGV 79787211
Reviewed
Rev100 		ML 1.5 2020-05-22
23:51:21		 41.5287 15.0103 22 2020-05-22
23:59:59		 Sala Sismica INGV-Roma 79465091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-22 23:51:21 ± 0.12
Latitude 41.5277 ± 0.0063
Longitude 14.9983 ± 0.0072
Depth (km) 25 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79787211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 593
Semi-minor axis of confidence ellipse (meter) 521
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 163
Circular confidence region, given by single value of horizontal uncertainty (meter) 590.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 52
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 26
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) 0.94878
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 79787211
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-10 23:21:37

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 79465091
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-22 23:59:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VIVA.HHZ. 2020-05-22T23:51:53.42 3.0 positive manual Pg 3.54 0
OT.OT13.EHZ. 2020-05-22T23:51:39.82 0.3 undecidable manual P 68 105.3168 98 0.87 47
IV.SGG.HHZ. 2020-05-22T23:51:38.29 0.6 undecidable manual S 253 53.8017 108 -0.24 43
OT.OT05.EHZ. 2020-05-22T23:51:37.35 0.3 undecidable manual S 74 52.2033 108 -0.77 57
IV.PIGN.HHZ. 2020-05-22T23:51:35.30 0.6 undecidable manual P 242 77.2671 102 0.62 38
IV.MSAG.HHZ. 2020-05-22T23:51:35.12 0.3 undecidable manual P 75 78.2661 102 0.28 62
IV.BSSO.HHZ. 2020-05-22T23:51:34.06 0.6 undecidable manual S 274 33.6441 119 0.48 44
IV.PSB1.HNN. 2020-05-22T23:51:34.56 0.3 undecidable manual S 205 37.2294 117 0.15 70
IV.SGRT.HHZ. 2020-05-22T23:51:33.26 0.3 undecidable manual P 68 66.6777 104 0.16 65
IV.SNAL.HHZ. 2020-05-22T23:51:33.17 0.3 undecidable manual P 165 69.0753 103 -0.28 63
IV.SACR.HHZ. 2020-05-22T23:51:32.35 0.6 undecidable manual S 239 28.3494 125 -0.02 47
OT.OT11.EHZ. 2020-05-22T23:51:32.60 0.3 undecidable manual S 93 28.0497 125 0.3 68
IV.SGTA.HHZ. 2020-05-22T23:51:31.20 0.1 undecidable manual P 145 53.2023 108 0.11 90
IV.MELA.HHZ. 2020-05-22T23:51:31.07 0.3 undecidable manual S 28 22.4553 132 -0.07 72
IV.SGG.HHZ. 2020-05-22T23:51:30.60 0.3 undecidable manual P 253 53.8017 108 -0.58 60
IV.TRIV.HHZ. 2020-05-22T23:51:30.29 0.3 undecidable manual P 306 45.621 111 0.29 66
OT.OT05.EHZ. 2020-05-22T23:51:30.36 0.1 undecidable manual P 74 52.2033 108 -0.59 82
IV.CIGN.HHZ. 2020-05-22T23:51:29.96 0.3 undecidable manual S 331 16.0728 143 -0.02 73
IT.LRNO.HNE. 2020-05-22T23:51:28.19 0.3 undecidable manual P 348 31.6461 121 0.13 70
IV.BSSO.HHZ. 2020-05-22T23:51:28.30 0.1 undecidable manual P 274 33.6441 119 -0.03 95
IV.PSB1.HNN. 2020-05-22T23:51:28.78 0.1 undecidable manual P 205 37.2294 117 -0.03 94
IV.GATE.HHZ. 2020-05-22T23:51:28.98 0.3 undecidable manual S 258 7.4814 161 0.08 75
IV.SACR.HHZ. 2020-05-22T23:51:27.46 0.1 positive manual P 239 28.3494 125 -0.17 93
OT.OT11.EHZ. 2020-05-22T23:51:27.62 0.1 undecidable manual P 93 28.0497 125 0.03 96
IV.MELA.HHZ. 2020-05-22T23:51:26.83 0.1 positive manual P 28 22.4553 132 -0.09 96
IV.CIGN.HHZ. 2020-05-22T23:51:26.27 0.1 undecidable manual P 331 16.0728 143 0.03 98
IV.GATE.HHZ. 2020-05-22T23:51:25.64 0.1 undecidable manual P 258 7.4814 161 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GATE.HHE. ML:1.6 0.0002285 0.5 AML other m 2020-05-22T23:51:30.67
IV.CIGN.HHN. ML:1.2 0.0000918 1.54 AML other m 2020-05-22T23:51:30.04
IV.GATE.HNE. ML:1.6 0.000261 0.66 AML other m 2020-05-22T23:51:30.58
IV.MELA.HHE. ML:1.8 0.0002535 0.38 AML other m 2020-05-22T23:51:31.35
IV.MELA.HNE. ML:1.8 0.000264 0.56 AML other m 2020-05-22T23:51:31.35
IV.GATE.HNN. ML:1.7 0.000343 0.42 AML other m 2020-05-22T23:51:31.78
IV.GATE.HHN. ML:1.7 0.000338 0.42 AML other m 2020-05-22T23:51:31.78
IV.SACR.HNN. ML:1.1 0.000049626735 0.256 AML other m 2020-05-22T23:51:32.59
IV.SACR.HHE. ML:1.4 0.0000887 0.74 AML other m 2020-05-22T23:51:32.86
IV.SACR.HNE. ML:1.2 0.00006930119999999999 0.256 AML other m 2020-05-22T23:51:32.86
IV.SACR.HHN. ML:1.2 0.0000531 0.72 AML other m 2020-05-22T23:51:33.55
IV.MELA.HHN. ML:1.7 0.000224 1.16 AML other m 2020-05-22T23:51:34.09
IV.MELA.HNN. ML:1.8 0.00030000000000000003 1.16 AML other m 2020-05-22T23:51:34.09
IV.BSSO.HNE. ML:1.3 0.00007004231999999999 0.3456 AML other m 2020-05-22T23:51:34.44
IV.BSSO.HHN. ML:1.3 0.00006805 0.58 AML other m 2020-05-22T23:51:34.67
IV.BSSO.HNN. ML:1.3 0.00006603142000000001 1.7312 AML other m 2020-05-22T23:51:35.96
IV.BSSO.HHE. ML:1.3 0.0000644 0.76 AML other m 2020-05-22T23:51:35.74
IV.CIGN.HHE. ML:1.0 0.000059800000000000003 0.5 AML other m 2020-05-22T23:51:37.48
IV.SGG.HHE. ML:1.1 0.0000259 0.3 AML other m 2020-05-22T23:51:44.14
IV.SGG.HHN. ML:1.2 0.000031899999999999996 0.42 AML other m 2020-05-22T23:51:44.46
IV.SGRT.HHN. ML:1.9 0.00012515 0.3 AML other m 2020-05-22T23:51:45.50
IV.SGRT.HHE. ML:1.8 0.0001046 0.54 AML other m 2020-05-22T23:51:45.49
IV.MSAG.HNN. ML:2.1 0.00017022885 0.2944 AML other m 2020-05-22T23:51:48.61
IV.MSAG.HHN. ML:1.8 0.00007535 0.44 AML other m 2020-05-22T23:51:48.62
IV.MSAG.HNE. ML:1.8 0.000094881775 0.272 AML other m 2020-05-22T23:51:48.71
IV.MSAG.HHE. ML:1.4 0.00003685 0.42 AML other m 2020-05-22T23:51:51.31
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