Earthquake with magnitude of ML 1.0 on date 25-07-2021 and time 04:30:51 (Italy) in region 1 km SE Sepino (CB)

A magnitude ML 1.0 earthquake occured in region: 1 km SE Sepino (CB), on

  • 25-07-2021 02:30:51 (UTC)
  • 25-07-2021 04:30:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.396, 14.627 at 10 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
Sepino CB 2 1964 1964
Sassinoro BN 4 618 2582
Morcone BN 7 4932 7514
San Giuliano del Sannio CB 7 1029 8543
Cercepiccola CB 8 681 9224
Pietraroja BN 8 545 9769
Guardiaregia CB 8 801 10570
Santa Croce del Sannio BN 9 927 11497
Cercemaggiore CB 11 3777 15274
Vinchiaturo CB 11 3324 18598
Cusano Mutri BN 12 4091 22689
Campochiaro CB 12 646 23335
Pontelandolfo BN 13 2167 25502
San Polo Matese CB 13 470 25972
Cerreto Sannita BN 14 3940 29912
Mirabello Sannitico CB 14 2180 32092
Campolattaro BN 15 1072 33164
San Lupo BN 15 801 33965
San Lorenzello BN 15 2227 36192
Castelpagano BN 15 1483 37675
Guardia Sanframondi BN 16 5078 42753
Colle d'Anchise CB 16 807 43560
Ferrazzano CB 16 3344 46904
Baranello CB 16 2673 49577
Circello BN 16 2388 51965
Gildone CB 16 809 52774
Casalduni BN 16 1378 54152
San Lorenzo Maggiore BN 16 2154 56306
Bojano CB 16 8058 64364
Colle Sannita BN 18 2431 66795
Faicchio BN 18 3634 70429
Campobasso CB 18 49431 119860
Gioia Sannitica CE 19 3638 123498
Busso CB 19 1273 124771
Castelvenere BN 19 2562 127333
Jelsi CB 20 1781 129114
Reino BN 20 1210 130324

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NW of Benevento (60091 inhabitants)
43 Km NE of Caserta (76326 inhabitants)
54 Km NE of Acerra (59573 inhabitants)
55 Km N of Avellino (54857 inhabitants)
59 Km NE of Aversa (53047 inhabitants)
59 Km NE of Afragola (65057 inhabitants)
61 Km NE of Casoria (77642 inhabitants)
63 Km NE of Giugliano in Campania (122974 inhabitants)
66 Km NE of Marano di Napoli (59874 inhabitants)
67 Km NE of Portici (55274 inhabitants)
69 Km NE of Ercolano (53709 inhabitants)
69 Km NE of Napoli (974074 inhabitants)
71 Km W of San Severo (53905 inhabitants)
71 Km NE of Torre del Greco (86275 inhabitants)
72 Km N of Scafati (50787 inhabitants)
76 Km NE of Pozzuoli (81661 inhabitants)
77 Km W of Foggia (151991 inhabitants)
77 Km N of Cava de' Tirreni (53659 inhabitants)
79 Km N of Castellammare di Stabia (66466 inhabitants)
81 Km N of Salerno (135261 inhabitants)
93 Km NW of Battipaglia (50786 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 1.0 2021-07-25
02:30:51
41.3957 14.6268 10 2021-07-25
02:35:08
Sala Sismica INGV-Roma 93176941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-25 02:30:51 ± 0.11
Latitude 41.3957 ± 0.0054
Longitude 14.6268 ± 0.0084
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93176941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 612
Semi-minor axis of confidence ellipse (meter) 600
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 123
Circular confidence region, given by single value of horizontal uncertainty (meter) 610
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 77
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.38851
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 93176941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-25 02:35:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PIGN.HHZ. 2021-07-25T02:31:05.77 0.6 undecidable manual S 240 0.3885 50 0.14 48
IV.TRIV.HHZ. 2021-07-25T02:31:05.11 0.6 undecidable manual S 351 0.375 50 -0.13 49
IV.COLB.HHZ. 2021-07-25T02:31:04.82 3.0 undecidable manual P 0.07 0
IV.VAGA.HHZ. 2021-07-25T02:31:03.59 0.3 undecidable manual S 274 0.295 50 0.73 62
IV.VITU.HHZ. 2021-07-25T02:31:00.69 0.3 undecidable manual S 179 0.2122 112 0.49 70
IV.SGG.HHZ. 2021-07-25T02:30:59.56 0.3 undecidable manual S 267 0.1862 115 0.28 73
IV.TRIV.HHZ. 2021-07-25T02:30:59.02 0.6 positive manual P 351 0.375 50 -0.35 46
IV.PIGN.HHZ. 2021-07-25T02:30:59.20 0.3 undecidable manual P 240 0.3885 50 -0.4 69
IV.BSSO.HHZ. 2021-07-25T02:30:58.63 0.3 undecidable manual S 351 0.1529 120 0.5 71
IV.VAGA.HHZ. 2021-07-25T02:30:57.64 0.6 undecidable manual P 274 0.295 50 -0.36 47
IV.GATE.HHZ. 2021-07-25T02:30:57.36 0.3 undecidable manual P 61 0.2428 110 0.27 72
IV.PSB1.HHZ. 2021-07-25T02:30:56.66 0.6 undecidable manual P 141 0.2203 112 0.03 51
IV.VITU.HHZ. 2021-07-25T02:30:56.26 0.3 undecidable manual P 179 0.2122 112 -0.2 74
IV.BSSO.HHZ. 2021-07-25T02:30:55.05 0.1 negative manual P 351 0.1529 120 -0.22 99
IV.SACR.HHZ. 2021-07-25T02:30:55.76 0.3 undecidable manual S 88 0.0594 146 0.34 74
IV.SGG.HHZ. 2021-07-25T02:30:55.63 0.3 undecidable manual P 267 0.1862 115 -0.3 73
IV.PTRJ.HHZ. 2021-07-25T02:30:55.73 0.3 undecidable manual S 247 0.08 138 -0.19 76
IV.PTRJ.HHZ. 2021-07-25T02:30:53.71 0.3 undecidable manual P 247 0.08 138 -0.28 74
IV.SACR.HHZ. 2021-07-25T02:30:53.44 0.1 positive manual P 88 0.0594 146 -0.26 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SACR.HHN. ML:1 0.0001485 0.82 AML other m 2021-07-25T02:30:56.48
IV.SACR.HHE. ML:0.9 0.0001325 0.3 AML other m 2021-07-25T02:30:56.60
IV.BSSO.HHN. ML:1 9.715E-5 1 AML other m 2021-07-25T02:30:58.96
IV.BSSO.HHE. ML:1.1 0.000118 0.66 AML other m 2021-07-25T02:30:59.27
IV.SGG.HHE. ML:1 7.65E-5 1.46 AML other m 2021-07-25T02:31:01.10
IV.SGG.HHN. ML:1.1 9.65E-5 0.44 AML other m 2021-07-25T02:31:01.03
IV.VITU.HHE. ML:1.2 9.565E-5 1 AML other m 2021-07-25T02:31:01.13
IV.VITU.HHN. ML:1.3 0.000119 0.34 AML other m 2021-07-25T02:31:03.46
IV.VAGA.HHE. ML:1 3.76E-5 1.22 AML other m 2021-07-25T02:31:04.65
IV.VAGA.HHN. ML:1.3 8.215E-5 0.42 AML other m 2021-07-25T02:31:06.15
IV.TRIV.HHN. ML:0.8 2.02E-5 0.68 AML other m 2021-07-25T02:31:09.10
IV.TRIV.HHE. ML:0.8 2.035E-5 1.18 AML other m 2021-07-25T02:31:16.40
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