Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 04-08-2021 and time 14:18:27 (Italy) in region 3 km SW Sassinoro (BN)

A magnitude ML 1.4 earthquake occured in region: 3 km SW Sassinoro (BN), on

  • 04-08-2021 12:18:27 (UTC)
  • 04-08-2021 14:18:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.3580, 14.6320 at 11 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
Sassinoro BN 3 618 618
Morcone BN 3 4932 5550
Sepino CB 6 1964 7514
Pietraroja BN 7 545 8059
Pontelandolfo BN 9 2167 10226
Santa Croce del Sannio BN 9 927 11153
Cerreto Sannita BN 10 3940 15093
Cusano Mutri BN 11 4091 19184
San Lupo BN 11 801 19985
San Giuliano del Sannio CB 11 1029 21014
Campolattaro BN 11 1072 22086
Guardiaregia CB 12 801 22887
Guardia Sanframondi BN 12 5078 27965
San Lorenzello BN 12 2227 30192
Cercepiccola CB 12 681 30873
San Lorenzo Maggiore BN 12 2154 33027
Casalduni BN 12 1378 34405
Cercemaggiore CB 14 3777 38182
Campochiaro CB 15 646 38828
Circello BN 15 2388 41216
Castelvenere BN 15 2562 43778
Faicchio BN 15 3634 47412
Castelpagano BN 16 1483 48895
Vinchiaturo CB 16 3324 52219
San Polo Matese CB 16 470 52689
Fragneto Monforte BN 17 1840 54529
Ponte BN 17 2580 57109
Colle Sannita BN 17 2431 59540
Fragneto l'Abate BN 17 1049 60589
Gioia Sannitica CE 17 3638 64227
Telese Terme BN 17 7486 71713
Reino BN 18 1210 72923
San Salvatore Telesino BN 18 3999 76922
Mirabello Sannitico CB 18 2180 79102
Paupisi BN 18 1633 80735
Gildone CB 19 809 81544
Solopaca BN 19 3820 85364
Torrecuso BN 19 3407 88771
Colle d'Anchise CB 19 807 89578
Bojano CB 19 8058 97636
Ferrazzano CB 20 3344 100980
Baranello CB 20 2673 103653

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NW of Benevento (60091 inhabitants)
40 Km NE of Caserta (76326 inhabitants)
51 Km NE of Acerra (59573 inhabitants)
51 Km N of Avellino (54857 inhabitants)
55 Km NE of Afragola (65057 inhabitants)
56 Km NE of Aversa (53047 inhabitants)
58 Km NE of Casoria (77642 inhabitants)
60 Km NE of Giugliano in Campania (122974 inhabitants)
63 Km NE of Marano di Napoli (59874 inhabitants)
64 Km NE of Portici (55274 inhabitants)
65 Km NE of Ercolano (53709 inhabitants)
66 Km NE of Napoli (974074 inhabitants)
67 Km NE of Torre del Greco (86275 inhabitants)
68 Km N of Scafati (50787 inhabitants)
72 Km SW of San Severo (53905 inhabitants)
73 Km NE of Pozzuoli (81661 inhabitants)
73 Km N of Cava de' Tirreni (53659 inhabitants)
75 Km N of Castellammare di Stabia (66466 inhabitants)
76 Km N of Salerno (135261 inhabitants)
77 Km W of Foggia (151991 inhabitants)
88 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 1.4 2021-08-04
12:18:27		 41.3578 14.6325 11 2021-12-29
11:12:41		 Bollettino Sismico Italiano INGV 97117391
Reviewed
Rev100 		ML 1.4 2021-08-04
12:18:26		 41.358 14.6367 11 2021-08-04
12:23:28		 Sala Sismica INGV-Roma 93669641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-04 12:18:27 ± 0.15
Latitude 41.3578 ± 0.0054
Longitude 14.6325 ± 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 97117391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 632
Semi-minor axis of confidence ellipse (meter) 163
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 40
Circular confidence region, given by single value of horizontal uncertainty (meter) 630.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 94
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
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) 0.06745
Epicentral distance of station farthest from the epicenter (degree) 0.25990
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 93669641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-04 12:23:28

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 97117391
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-31 20:42:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SGG.HHZ. 2021-08-04T12:18:35.57 0.3 undecidable manual S 279 21.3675 116 0.31 73
IV.BSSO.HHZ. 2021-08-04T12:18:35.38 0.6 undecidable manual S 351 21.1677 117 0.18 50
IV.PSB1.HHZ. 2021-08-04T12:18:35.33 0.6 undecidable manual S 135 21.0678 117 0.15 50
IV.VITU.HHZ. 2021-08-04T12:18:34.45 0.6 undecidable manual S 181 19.3695 119 -0.21 50
IV.GATE.HNN. 2021-08-04T12:18:33.22 0.3 undecidable manual P 53 28.8489 50 0.3 72
IV.BSSO.HHZ. 2021-08-04T12:18:31.43 0.1 undecidable manual P 351 21.1677 117 -0.3 97
IV.PTRJ.HHE. 2021-08-04T12:18:31.78 0.6 undecidable manual S 275 8.6802 141 0.04 53
IV.PSB1.HHZ. 2021-08-04T12:18:31.51 0.1 undecidable manual P 135 21.0678 117 -0.21 99
IV.SACR.HHZ. 2021-08-04T12:18:31.80 0.3 undecidable manual S 54 7.4814 145 0.3 75
IV.SGG.HHZ. 2021-08-04T12:18:31.51 0.1 undecidable manual P 279 21.3675 116 -0.26 98
IV.VITU.HHZ. 2021-08-04T12:18:31.80 0.3 undecidable manual P 181 19.3695 119 0.38 72
IV.PTRJ.HHE. 2021-08-04T12:18:29.75 0.3 undecidable manual P 275 8.6802 141 0.01 79
IV.SACR.HHZ. 2021-08-04T12:18:29.31 0.1 undecidable manual P 54 7.4814 145 -0.29 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SACR.HNE. ML:1.4 0.000354 0.66 AML other m 2021-08-04T12:18:32.16
IV.SACR.HHE. ML:1.4 0.0003205 0.66 AML other m 2021-08-04T12:18:32.16
IV.SACR.HNN. ML:1.3 0.00026450000000000003 1.56 AML other m 2021-08-04T12:18:32.20
IV.SACR.HHN. ML:1.3 0.00028100000000000005 0.26 AML other m 2021-08-04T12:18:32.85
IV.BSSO.HHE. ML:1.7 0.000317 0.46 AML other m 2021-08-04T12:18:35.83
IV.PSB1.HHE. ML:1.3 0.00015 0.64 AML other m 2021-08-04T12:18:36.64
IV.VITU.HHE. ML:1.6 0.000325 0.42 AML other m 2021-08-04T12:18:36.18
IV.VITU.HHN. ML:1.7 0.0003845 0.92 AML other m 2021-08-04T12:18:36.93
IV.SGG.HHN. ML:1.6 0.000259 0.34 AML other m 2021-08-04T12:18:37.43
IV.BSSO.HHN. ML:1.3 0.00014700000000000002 0.38 AML other m 2021-08-04T12:18:38.75
IV.SGG.HHE. ML:1.5 0.0002085 0.42 AML other m 2021-08-04T12:18:38.76
IV.PSB1.HHN. ML:1.2 0.00010495 0.9 AML other m 2021-08-04T12:18:39.99
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