Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 18-03-2020 and time 20:31:46 (Italy) in region San Leucio del Sannio (BN)

A magnitude ML 1.0 earthquake occured in region: San Leucio del Sannio (BN), on

  • 18-03-2020 19:31:46 (UTC)
  • 18-03-2020 20:31:46 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.0730, 14.7560 at 20 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
San Leucio del Sannio BN 0 3106 3106
Ceppaloni BN 3 3415 6521
Sant'Angelo a Cupolo BN 4 4325 10846
Chianche AV 4 475 11321
Arpaise BN 5 761 12082
Apollosa BN 5 2658 14740
Petruro Irpino AV 6 349 15089
San Nicola Manfredi BN 6 3722 18811
Torrioni AV 7 549 19360
San Martino Sannita BN 7 1230 20590
Roccabascerana AV 7 2354 22944
Benevento BN 7 60091 83035
Altavilla Irpina AV 8 4196 87231
Pannarano BN 8 2130 89361
San Giorgio del Sannio BN 8 10022 99383
San Nazzaro BN 9 884 100267
Tufo AV 9 889 101156
Castelpoto BN 9 1254 102410
Pietrastornina AV 9 1553 103963
San Martino Valle Caudina AV 9 4884 108847
Montefusco AV 9 1338 110185
Calvi BN 9 2682 112867
Santa Paolina AV 10 1256 114123
Montesarchio BN 10 13500 127623
Sant'Angelo a Scala AV 11 730 128353
Campoli del Monte Taburno BN 11 1546 129899
Grottolella AV 11 1869 131768
Bonea BN 12 1448 133216
Prata di Principato Ultra AV 12 2944 136160
Foglianise BN 12 3385 139545
Pietradefusi AV 12 2348 141893
Tocco Caudio BN 12 1508 143401
Pratola Serra AV 13 3764 147165
Cervinara AV 13 9658 156823
Cautano BN 13 2044 158867
Capriglia Irpina AV 13 2398 161265
Montefredane AV 13 2297 163562
Summonte AV 14 1583 165145
Venticano AV 14 2537 167682
Rotondi AV 14 3591 171273
Torrecuso BN 14 3407 174680
Vitulano BN 14 2944 177624
Torre Le Nocelle AV 14 1324 178948
Montemiletto AV 14 5313 184261
Ospedaletto d'Alpinolo AV 15 2145 186406
Paolisi BN 15 2072 188478
Paduli BN 15 3978 192456
Bucciano BN 16 2100 194556
Apice BN 16 5686 200242
Paupisi BN 16 1633 201875
Pietrelcina BN 16 3114 204989
Montefalcione AV 16 3359 208348
Airola BN 16 8195 216543
Manocalzati AV 17 3160 219703
Ponte BN 17 2580 222283
Quadrelle AV 17 1865 224148
Mercogliano AV 17 12267 236415
Sirignano AV 17 2933 239348
Moiano BN 18 4094 243442
Arpaia BN 18 1992 245434
Mugnano del Cardinale AV 18 5373 250807
Candida AV 18 1147 251954
Baiano AV 18 4718 256672
Avellino AV 18 54857 311529
Avella AV 18 7890 319419
Taurasi AV 19 2377 321796
Atripalda AV 19 11020 332816
Sperone AV 19 3706 336522
Pesco Sannita BN 19 1972 338494
San Potito Ultra AV 19 1558 340052
Sant'Arcangelo Trimonte BN 19 573 340625
Lapio AV 19 1572 342197
Forchia BN 19 1235 343432
Parolise AV 19 663 344095
Fragneto Monforte BN 19 1840 345935
Roccarainola NA 20 7082 353017

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km SW of Benevento (60091 inhabitants)
18 Km N of Avellino (54857 inhabitants)
35 Km E of Acerra (59573 inhabitants)
36 Km E of Caserta (76326 inhabitants)
41 Km E of Afragola (65057 inhabitants)
41 Km NE of Scafati (50787 inhabitants)
42 Km N of Cava de' Tirreni (53659 inhabitants)
43 Km E of Casoria (77642 inhabitants)
44 Km NE of Portici (55274 inhabitants)
44 Km N of Salerno (135261 inhabitants)
45 Km NE of Ercolano (53709 inhabitants)
46 Km NE of Torre del Greco (86275 inhabitants)
47 Km E of Aversa (53047 inhabitants)
48 Km NE of Castellammare di Stabia (66466 inhabitants)
49 Km E of Giugliano in Campania (122974 inhabitants)
50 Km NE of Napoli (974074 inhabitants)
51 Km E of Marano di Napoli (59874 inhabitants)
55 Km NW of Battipaglia (50786 inhabitants)
61 Km E of Pozzuoli (81661 inhabitants)
79 Km SW of Foggia (151991 inhabitants)
86 Km SW of San Severo (53905 inhabitants)
99 Km W of Cerignola (58396 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 1.0 2020-03-18
19:31:46		 41.0732 14.7562 20 2020-07-18
21:08:27		 Bollettino Sismico Italiano INGV 77471241
Reviewed
Rev100 		ML 0.8 2020-03-18
19:31:46		 41.0165 14.7072 9 2020-03-18
19:42:47		 Sala Sismica INGV-Roma 77359991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-18 19:31:46 ± 0.42
Latitude 41.0732 ± 0.0153
Longitude 14.7562 ± 0.0203
Depth (km) 20 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 77471241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1910
Semi-minor axis of confidence ellipse (meter) 1179
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 236
Circular confidence region, given by single value of horizontal uncertainty (meter) 1910.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.45
Epicentral distance of station closest to the epicenter (degree) 0.05756
Epicentral distance of station farthest from the epicenter (degree) 0.42538
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 77471241
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-22 16:45:29

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 77359991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-18 19:42:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MCRV.HHN. 2020-03-18T19:32:02.27 0.6 undecidable manual S 133 47.2194 104 0.5 61
IX.MNT3.HHZ.02 2020-03-18T19:31:57.81 0.3 undecidable manual S 141 33.5442 111 -0.47 90
IV.MTMR.EHZ. 2020-03-18T19:31:56.67 0.6 undecidable manual S 130 26.8509 117 0.03 68
IV.PAOL.HHZ. 2020-03-18T19:31:55.05 0.6 undecidable manual S 254 16.4724 134 0.67 58
IV.MCRV.HHN. 2020-03-18T19:31:55.12 0.3 undecidable manual P 133 47.2194 104 -0.17 95
IV.MRB1.HNE. 2020-03-18T19:31:55.53 0.3 undecidable manual S 73 18.5703 130 0.74 87
IV.VITU.HHZ. 2020-03-18T19:31:53.46 0.3 undecidable manual S 319 16.1727 134 -0.85 83
IX.BENI.HNE.01 2020-03-18T19:31:52.17 0.6 undecidable manual S 12 6.3936 159 -0.7 60
IV.MTMR.EHZ. 2020-03-18T19:31:52.04 0.3 undecidable manual P 130 26.8509 117 -0.28 96
IX.MNT3.HHZ.02 2020-03-18T19:31:52.98 0.3 undecidable manual P 141 33.5442 111 -0.29 95
IV.MRB1.HNE. 2020-03-18T19:31:51.58 0.3 undecidable manual P 73 18.5703 130 0.32 99
IV.PSB1.HHE. 2020-03-18T19:31:51.47 0.3 undecidable manual P 15 17.2716 132 0.36 98
IV.PAOL.HHZ. 2020-03-18T19:31:51.92 0.3 undecidable manual P 254 16.4724 134 0.91 81
IV.VITU.HHZ. 2020-03-18T19:31:50.73 0.3 undecidable manual P 319 16.1727 134 -0.25 100
IX.BENI.HNE.01 2020-03-18T19:31:49.84 0.3 undecidable manual P 12 6.3936 159 -0.3 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VITU.HHE. ML:1.0 0.0000713 0.72 AML other m 2020-03-18T19:31:55.67
IV.PAOL.HHN. ML:1.0 0.0000703 0.28 AML other m 2020-03-18T19:31:55.97
IV.VITU.HHN. ML:1.0 0.0000605 0.32 AML other m 2020-03-18T19:31:56.31
IV.PAOL.HHE. ML:0.8 0.00004124999999999999 0.46 AML other m 2020-03-18T19:31:58.34
IX.MNT3.HHE.02 ML:0.8 0.00002625 1.58 AML other m 2020-03-18T19:31:59.82
IX.MNT3.HHN.02 ML:1.0 0.0000337 0.5 AML other m 2020-03-18T19:32:00.77
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