Earthquake with magnitude of ML 1.8 on date 18-09-2020 and time 21:27:45 (Italy) in region 2 km S San Marco la Catola (FG)

A magnitude ML 1.8 earthquake occured in region: 2 km S San Marco la Catola (FG), on

  • 18-09-2020 19:27:45 (UTC)
  • 18-09-2020 21:27:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.51, 15 at 30 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.

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 2 1012 1012
Volturara Appula FG 4 430 1442
Tufara CB 6 925 2367
Celenza Valfortore FG 6 1598 3965
Gambatesa CB 7 1464 5429
Castelvetere in Val Fortore BN 9 1240 6669
Motta Montecorvino FG 9 730 7399
Carlantino FG 10 980 8379
Volturino FG 11 1743 10122
San Bartolomeo in Galdo BN 11 4867 14989
Pietramontecorvino FG 11 2721 17710
Macchia Valfortore CB 12 576 18286
Baselice BN 13 2397 20683
Castelnuovo della Daunia FG 13 1445 22128
Casalvecchio di Puglia FG 13 1877 24005
Alberona FG 13 985 24990
Pietracatella CB 14 1375 26365
Riccia CB 14 5262 31627
Casalnuovo Monterotaro FG 15 1556 33183
Sant'Elia a Pianisi CB 16 1818 35001
Jelsi CB 17 1781 36782
Roseto Valfortore FG 17 1074 37856
Colletorto CB 17 1938 39794
Foiano di Val Fortore BN 18 1410 41204
Monacilioni CB 20 523 41727
San Giuliano di Puglia CB 20 1042 42769

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km SW of San Severo (53905 inhabitants)
45 Km W of Foggia (151991 inhabitants)
46 Km NE of Benevento (60091 inhabitants)
68 Km N of Avellino (54857 inhabitants)
74 Km NE of Caserta (76326 inhabitants)
77 Km W of Manfredonia (57279 inhabitants)
80 Km W of Cerignola (58396 inhabitants)
82 Km NE of Acerra (59573 inhabitants)
87 Km NE of Afragola (65057 inhabitants)
89 Km NE of Aversa (53047 inhabitants)
90 Km NE of Casoria (77642 inhabitants)
93 Km NE of Giugliano in Campania (122974 inhabitants)
93 Km N of Cava de' Tirreni (53659 inhabitants)
94 Km NE of Scafati (50787 inhabitants)
94 Km NE of Portici (55274 inhabitants)
95 Km N of Salerno (135261 inhabitants)
95 Km NE of Ercolano (53709 inhabitants)
96 Km NE of Marano di Napoli (59874 inhabitants)
96 Km NE of Torre del Greco (86275 inhabitants)
98 Km NE of Napoli (974074 inhabitants)
100 Km N of Battipaglia (50786 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.8 2020-09-18
19:27:45
41.51 15 30 2020-09-18
19:38:24
Sala Sismica INGV-Roma 83014061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-18 19:27:45 ± 0.27
Latitude 41.51 ± 0.01
Longitude 15.00 ± 0.01
Depth (km) 30 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83014061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1124
Semi-minor axis of confidence ellipse (meter) 1004
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 151
Circular confidence region, given by single value of horizontal uncertainty (meter) 1120
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 18
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
Epicentral distance of station farthest from the epicenter (degree) 0.60434
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 83014061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-18 19:38:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CAVE.HHZ. 2020-09-18T19:29:43.03 3.0 undecidable manual Sn 1.76 0
IV.PII.HHZ. 2020-09-18T19:29:33.45 3.0 undecidable manual Sn 3.84 0
IV.MTGR.HHZ. 2020-09-18T19:29:30.89 3.0 undecidable manual Sn -0.36 0
IV.SARZ.HHZ. 2020-09-18T19:29:28.56 3.0 negative manual Pg 22.450001 0
IV.ECTS.HHZ. 2020-09-18T19:29:24.36 3.0 undecidable manual Sn 1.94 0
IV.EUCT.HNZ. 2020-09-18T19:29:23.33 3.0 positive manual Pg 16.18 0
GU.RNCA.HHZ. 2020-09-18T19:29:14.05 3.0 undecidable manual Pn 11.24 0
IV.MAGA.HHZ. 2020-09-18T19:29:10.98 3.0 positive manual Pn 8.4 0
IV.TREG.HNZ. 2020-09-18T19:29:09.42 3.0 undecidable manual Pg 12.7 0
IV.MBAL.EHZ. 2020-09-18T19:29:03.55 3.0 positive manual Pn 3.17 0
IV.MTGR.HHZ. 2020-09-18T19:28:54.54 3.0 undecidable manual Pg 9.49 0
IV.NRCA.HNZ. 2020-09-18T19:28:39.15 3.0 undecidable manual Sn -0.46 0
IV.LMD.HHZ. 2020-09-18T19:28:39.85 3.0 undecidable manual Pn 1.8 0
IV.SSP9.EHZ. 2020-09-18T19:28:34.96 3.0 negative manual Pn 4.77 0
IV.NRCA.HHZ. 2020-09-18T19:28:25.77 3.0 undecidable manual Pg 9.73 0
IV.MSAG.HHZ. 2020-09-18T19:28:12.51 3.0 undecidable manual S 0
IV.SGRT.HHZ. 2020-09-18T19:28:07.11 0.6 undecidable manual S 66 0.6043 109 0.29 44
IX.STN3.HHZ.02 2020-09-18T19:28:04.81 3.0 undecidable manual P -0.77 0
IV.APRC.HHZ. 2020-09-18T19:28:02.89 0.6 undecidable manual S 58 0.473 115 -0.3 45
IV.MSAG.HHZ. 2020-09-18T19:28:01.70 3.0 undecidable manual P 0
IV.PTRJ.HNZ. 2020-09-18T19:28:00.92 3.0 undecidable manual S 0.11 0
IV.BSSO.HHZ. 2020-09-18T19:27:59.12 0.6 undecidable manual S 277 0.3085 127 0.11 48
IV.SGRT.HHZ. 2020-09-18T19:27:58.67 0.6 undecidable manual P 66 0.6043 109 0.84 37
IV.PSB1.HHZ. 2020-09-18T19:27:58.97 0.6 undecidable manual S 207 0.3211 126 -0.32 46
OT.OT11.EHN. 2020-09-18T19:27:57.28 0.6 undecidable manual S 89 0.2482 134 -0.35 46
IV.SACR.HHZ. 2020-09-18T19:27:57.31 0.6 undecidable manual S 243 0.25 133 -0.36 46
IV.MELA.HHZ. 2020-09-18T19:27:56.68 0.6 undecidable manual S 25 0.2167 138 -0.3 47
IV.GATE.HHZ. 2020-09-18T19:27:55.51 0.6 undecidable manual S 273 0.0701 164 0.67 43
IV.APRC.HHZ. 2020-09-18T19:27:55.69 1.0 undecidable manual P 58 0.473 115 -0.06 23
OT.OT05.EHZ. 2020-09-18T19:27:55.17 0.1 undecidable manual P 71 0.4721 115 -0.56 83
IV.PSB1.HHZ. 2020-09-18T19:27:53.46 0.1 undecidable manual P 207 0.3211 126 -0.03 97
IV.BSSO.HHZ. 2020-09-18T19:27:53.57 0.1 undecidable manual P 277 0.3085 127 0.24 93
OT.OT11.EHN. 2020-09-18T19:27:53.26 0.1 undecidable manual P 89 0.2482 134 0.72 82
IV.SACR.HHZ. 2020-09-18T19:27:52.46 0.1 positive manual P 243 0.25 133 -0.09 97
IV.MELA.HHZ. 2020-09-18T19:27:52.16 0.1 undecidable manual P 25 0.2167 138 0 100
IV.CIGN.HHE. 2020-09-18T19:27:51.52 0.3 undecidable manual P 333 0.1619 146 -0.06 75
IV.GATE.HHZ. 2020-09-18T19:27:50.67 0.1 undecidable manual P 273 0.0701 164 -0.25 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SGRT.HHE. ML:0 7.0504885E-5 0.2048 AML other m 2020-09-18T19:28:10.63
IV.SGRT.HHN. ML:2 0.0001375 1.46 AML other m 2020-09-18T19:28:09.25
IV.GATE.HHE. ML:2 0.0005536765 0.4736 AML other m 2020-09-18T19:27:56.35
IV.GATE.HHN. ML:2 0.00047097155 0.3584 AML other m 2020-09-18T19:27:56.59
IV.GATE.HNE. ML:2 0.0005843832 0.4736 AML other m 2020-09-18T19:27:56.35
IV.GATE.HNN. ML:2 0.0005075012 0.3712 AML other m 2020-09-18T19:27:56.59
IV.MELA.HHE. ML:1.7 0.000194965475 0.2688 AML other m 2020-09-18T19:27:57.18
IV.MELA.HHN. ML:2 0.00037253335 0.4608 AML other m 2020-09-18T19:27:56.93
IV.MELA.HNE. ML:1.8 0.00022378555 0.256 AML other m 2020-09-18T19:27:57.19
IV.MELA.HNN. ML:2 0.00036704845 0.4736 AML other m 2020-09-18T19:27:56.93
IV.SACR.HHE. ML:1.5 0.000102704845 0.4096 AML other m 2020-09-18T19:27:57.47
IV.SACR.HHN. ML:1.4 8.7432115E-5 0.2816 AML other m 2020-09-18T19:27:57.88
IV.SACR.HNN. ML:1.4 8.1011665E-5 0.3072 AML other m 2020-09-18T19:27:57.89
IV.PSB1.HHE. ML:1.2 4.311898E-5 0.2432 AML other m 2020-09-18T19:27:59.08
IV.BSSO.HHN. ML:1.4 7.619105E-5 0.2816 AML other m 2020-09-18T19:28:00.20
OT.OT05.EHE. ML:1.5 6.33079805E-5 0.1792 AML other m 2020-09-18T19:28:05.42
OT.OT05.EHN. ML:1.5 5.818186E-5 0.1792 AML other m 2020-09-18T19:28:06.55
IV.APRC.HNE. ML:1.8 0.0001281491 0.3072 AML other m 2020-09-18T19:28:05.33
IV.APRC.HHE. ML:1.8 0.00011902966 0.256 AML other m 2020-09-18T19:28:05.33
IV.APRC.HHN. ML:1.7 0.00010964542 0.2688 AML other m 2020-09-18T19:28:06.76
IV.MSAG.HHE. ML:1.5 3.9899735E-5 0.2816 AML other m 2020-09-18T19:28:13.54
IV.MSAG.HHN. ML:1.8 9.1846085E-5 0.2432 AML other m 2020-09-18T19:28:13.63
IV.MSAG.HNE. ML:1.9 0.000108521065 0.2816 AML other m 2020-09-18T19:28:13.54
IV.MSAG.HNN. ML:2.2 0.00020870825 0.2432 AML other m 2020-09-18T19:28:13.63
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download