Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 25-07-2021 and time 03:06:00 (Italy) in region 2 km SW Sepino (CB)

A magnitude ML 1.0 earthquake occured in region: 2 km SW Sepino (CB), on

  • 25-07-2021 01:06:00 (UTC)
  • 25-07-2021 03:06:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.3930, 14.6120 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
Sepino CB 2 1964 1964
Sassinoro BN 5 618 2582
Pietraroja BN 7 545 3127
Morcone BN 7 4932 8059
Guardiaregia CB 8 801 8860
San Giuliano del Sannio CB 8 1029 9889
Cercepiccola CB 9 681 10570
Santa Croce del Sannio BN 10 927 11497
Cusano Mutri BN 10 4091 15588
Campochiaro CB 11 646 16234
Vinchiaturo CB 12 3324 19558
Cercemaggiore CB 12 3777 23335
San Polo Matese CB 12 470 23805
Cerreto Sannita BN 13 3940 27745
Pontelandolfo BN 13 2167 29912
San Lorenzello BN 14 2227 32139
San Lupo BN 15 801 32940
Mirabello Sannitico CB 15 2180 35120
Guardia Sanframondi BN 15 5078 40198
Colle d'Anchise CB 15 807 41005
Campolattaro BN 15 1072 42077
Bojano CB 15 8058 50135
Baranello CB 16 2673 52808
San Lorenzo Maggiore BN 16 2154 54962
Ferrazzano CB 16 3344 58306
Casalduni BN 16 1378 59684
Castelpagano BN 16 1483 61167
Faicchio BN 17 3634 64801
Gildone CB 17 809 65610
Circello BN 17 2388 67998
Gioia Sannitica CE 17 3638 71636
Castelvenere BN 18 2562 74198
Busso CB 19 1273 75471
Colle Sannita BN 19 2431 77902
Campobasso CB 19 49431 127333
San Potito Sannitico CE 19 1925 129258
Castello del Matese CE 20 1494 130752
Spinete CB 20 1320 132072
San Salvatore Telesino BN 20 3999 136071
San Gregorio Matese CE 20 988 137059

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NW of Benevento (60091 inhabitants)
42 Km NE of Caserta (76326 inhabitants)
54 Km NE of Acerra (59573 inhabitants)
55 Km N of Avellino (54857 inhabitants)
58 Km NE of Aversa (53047 inhabitants)
58 Km NE of Afragola (65057 inhabitants)
60 Km NE of Casoria (77642 inhabitants)
62 Km NE of Giugliano in Campania (122974 inhabitants)
65 Km NE of Marano di Napoli (59874 inhabitants)
67 Km NE of Portici (55274 inhabitants)
68 Km NE of Napoli (974074 inhabitants)
69 Km NE of Ercolano (53709 inhabitants)
70 Km N of Torre del Greco (86275 inhabitants)
72 Km N of Scafati (50787 inhabitants)
72 Km W of San Severo (53905 inhabitants)
75 Km NE of Pozzuoli (81661 inhabitants)
77 Km N of Cava de' Tirreni (53659 inhabitants)
78 Km W of Foggia (151991 inhabitants)
78 Km N of Castellammare di Stabia (66466 inhabitants)
80 Km N of Salerno (135261 inhabitants)
93 Km NW of Battipaglia (50786 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 2021-07-25
01:06:00		 41.3927 14.6115 11 2021-12-29
11:12:14		 Bollettino Sismico Italiano INGV 93262821
Reviewed
Rev100 		ML 1.0 2021-07-25
01:06:00		 41.3917 14.6117 11 2021-07-25
01:15:55		 Sala Sismica INGV-Roma 93175501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-25 01:06:00 ± 0.08
Latitude 41.3927 ± 0.0045
Longitude 14.6115 ± 0.0072
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 93262821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 609
Semi-minor axis of confidence ellipse (meter) 468
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 256
Circular confidence region, given by single value of horizontal uncertainty (meter) 610.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.06835
Epicentral distance of station farthest from the epicenter (degree) 0.39390
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 93262821
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-10 15:07:14

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 93175501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-25 01:15:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PAOL.HHZ. 2021-07-25T01:06:14.32 0.6 undecidable manual S 185 40.2264 50 0.32 45
IV.PSB1.HHZ. 2021-07-25T01:06:10.27 0.6 undecidable manual S 138 25.0527 50 0.33 46
IV.VITU.HHZ. 2021-07-25T01:06:10.05 0.6 undecidable manual S 176 23.2545 50 0.58 43
IV.TST01.HHZ. 2021-07-25T01:06:09.00 0.6 undecidable manual P 335 43.7229 50 0.11 47
IV.BSSO.HHZ. 2021-07-25T01:06:08.10 0.6 undecidable manual S 355 17.0718 121 0.5 45
IV.TRIV.HHZ. 2021-07-25T01:06:08.60 0.1 undecidable manual P 353 41.8248 50 0 95
IV.SGG.HHZ. 2021-07-25T01:06:08.69 0.6 undecidable manual S 268 19.3695 118 0.4 46
IV.MIDA.HHE. 2021-07-25T01:06:07.97 0.3 undecidable manual P 313 40.5261 50 -0.44 65
IV.PAOL.HHZ. 2021-07-25T01:06:07.68 0.3 undecidable manual P 185 40.2264 50 -0.68 60
IV.VAGA.HHZ. 2021-07-25T01:06:06.97 0.3 undecidable manual P 275 31.5462 50 -0.04 72
IV.GATE.HHE. 2021-07-25T01:06:06.94 0.3 undecidable manual P 62 28.1496 50 0.44 68
IV.SGG.HHZ. 2021-07-25T01:06:05.05 0.1 undecidable manual P 268 19.3695 118 -0.01 100
IV.VITU.HHZ. 2021-07-25T01:06:05.72 0.3 undecidable manual P 176 23.2545 50 -0.02 74
IV.PTRJ.HHZ. 2021-07-25T01:06:05.15 0.6 undecidable manual S 245 7.5813 144 0.02 50
IV.PSB1.HHZ. 2021-07-25T01:06:05.96 0.1 undecidable manual P 138 25.0527 50 -0.06 97
IV.BSSO.HHZ. 2021-07-25T01:06:04.67 0.1 undecidable manual P 355 17.0718 121 0 100
IV.SACR.HHZ. 2021-07-25T01:06:04.95 0.3 undecidable manual S 86 7.881 143 -0.24 49
IV.PTRJ.HHZ. 2021-07-25T01:06:03.11 0.1 undecidable manual P 245 7.5813 144 -0.13 100
IV.SACR.HHZ. 2021-07-25T01:06:03.04 0.1 positive manual P 86 7.881 143 -0.23 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PTRJ.HNE. ML:1.4 0.0003330694 0.2496 AML other m 2021-07-25T01:06:05.66
IV.PTRJ.HHN. ML:1.0 0.00012561005 0.3 AML other m 2021-07-25T01:06:05.86
IV.PTRJ.HNN. ML:1.4 0.00033421810000000004 0.3696 AML other m 2021-07-25T01:06:05.70
IV.SACR.HHN. ML:1.0 0.000151487715 1.74 AML other m 2021-07-25T01:06:05.10
IV.SACR.HNN. ML:1.0 0.00015290414999999998 1.74 AML other m 2021-07-25T01:06:05.11
IV.SACR.HHE. ML:1.0 0.000131 0.5 AML other m 2021-07-25T01:06:06.23
IV.PTRJ.HHE. ML:-0.2 0.0000082543145 0.2 AML other m 2021-07-25T01:06:06.42
IV.BSSO.HNE. ML:1.0 0.00007543127 0.38 AML other m 2021-07-25T01:06:08.46
IV.BSSO.HHN. ML:1.1 0.0001043 1.08 AML other m 2021-07-25T01:06:08.64
IV.BSSO.HNN. ML:1.0 0.00007792012 0.22 AML other m 2021-07-25T01:06:08.65
IV.BSSO.HHE. ML:1.0 0.0000769 1.28 AML other m 2021-07-25T01:06:08.94
IV.SGG.HHN. ML:1.2 0.0001116 0.48 AML other m 2021-07-25T01:06:10.70
IV.VITU.HNN. ML:1.3 0.000131008595 1.44 AML other m 2021-07-25T01:06:11.23
IV.PSB1.HHE. ML:0.8 0.000039172405 0.16 AML other m 2021-07-25T01:06:11.80
IV.SGG.HHE. ML:1.0 0.00007225000000000001 0.64 AML other m 2021-07-25T01:06:12.83
IV.VITU.HHN. ML:1.2 0.00009850000000000001 0.34 AML other m 2021-07-25T01:06:13.29
IV.VITU.HHE. ML:1.2 0.00008915000000000001 0.34 AML other m 2021-07-25T01:06:13.15
IV.PAOL.HHE. ML:0.8 0.0000202 1.08 AML other m 2021-07-25T01:06:14.45
IV.PSB1.HHN. ML:0.7 0.0000313 0.44 AML other m 2021-07-25T01:06:14.64
IV.VAGA.HHN. ML:1.2 0.00008075 0.82 AML other m 2021-07-25T01:06:15.54
IV.VAGA.HHE. ML:0.8 0.00003185 0.78 AML other m 2021-07-25T01:06:15.22
IV.PAOL.HHN. ML:0.8 0.000019549999999999997 0.92 AML other m 2021-07-25T01:06:18.47
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