Earthquake with magnitude of ML 1.9 on date 19-07-2021 and time 20:17:58 (Italy) in region 5 km SW Guardiaregia (CB)

A magnitude ML 1.9 earthquake occured in region: 5 km SW Guardiaregia (CB), on

  • 19-07-2021 18:17:58 (UTC)
  • 19-07-2021 20:17:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.392, 14.521 at 8 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
Guardiaregia CB 5 801 801
Pietraroja BN 6 545 1346
Cusano Mutri BN 6 4091 5437
Campochiaro CB 7 646 6083
San Polo Matese CB 8 470 6553
Sepino CB 8 1964 8517
Bojano CB 11 8058 16575
Sassinoro BN 12 618 17193
Gioia Sannitica CE 12 3638 20831
San Potito Sannitico CE 12 1925 22756
Castello del Matese CE 12 1494 24250
San Giuliano del Sannio CB 12 1029 25279
San Gregorio Matese CE 12 988 26267
Cerreto Sannita BN 12 3940 30207
Vinchiaturo CB 13 3324 33531
Piedimonte Matese CE 13 11297 44828
San Lorenzello BN 13 2227 47055
Faicchio BN 13 3634 50689
Colle d'Anchise CB 13 807 51496
Morcone BN 13 4932 56428
Cercepiccola CB 15 681 57109
San Massimo CB 15 855 57964
Baranello CB 15 2673 60637
Guardia Sanframondi BN 16 5078 65715
Alife CE 17 7616 73331
Spinete CB 17 1320 74651
San Salvatore Telesino BN 17 3999 78650
San Lupo BN 17 801 79451
Castelvenere BN 18 2562 82013
Santa Croce del Sannio BN 18 927 82940
San Lorenzo Maggiore BN 18 2154 85094
Cantalupo nel Sannio IS 18 739 85833
Roccamandolfi IS 18 938 86771
Pontelandolfo BN 18 2167 88938
Cercemaggiore CB 19 3777 92715
Busso CB 19 1273 93988
Mirabello Sannitico CB 19 2180 96168
Telese Terme BN 19 7486 103654
Puglianello BN 20 1349 105003
Ferrazzano CB 20 3344 108347

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NW of Benevento (60091 inhabitants)
39 Km NE of Caserta (76326 inhabitants)
51 Km N of Acerra (59573 inhabitants)
53 Km NE of Aversa (53047 inhabitants)
55 Km NE of Afragola (65057 inhabitants)
57 Km NE of Casoria (77642 inhabitants)
58 Km NW of Avellino (54857 inhabitants)
58 Km NE of Giugliano in Campania (122974 inhabitants)
61 Km NE of Marano di Napoli (59874 inhabitants)
65 Km N of Portici (55274 inhabitants)
65 Km NE of Napoli (974074 inhabitants)
66 Km N of Ercolano (53709 inhabitants)
69 Km N of Torre del Greco (86275 inhabitants)
70 Km NE of Pozzuoli (81661 inhabitants)
72 Km N of Scafati (50787 inhabitants)
78 Km N of Castellammare di Stabia (66466 inhabitants)
78 Km N of Cava de' Tirreni (53659 inhabitants)
79 Km W of San Severo (53905 inhabitants)
82 Km N of Salerno (135261 inhabitants)
86 Km W of Foggia (151991 inhabitants)
95 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 1.9 2021-07-19
18:17:58
41.3922 14.5213 8 2021-07-19
18:29:03
Sala Sismica INGV-Roma 92962401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-19 18:17:58 ± 0.13
Latitude 41.3922 ± 0.0081
Longitude 14.5213 ± 0.0120
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 92962401

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 933
Semi-minor axis of confidence ellipse (meter) 761
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 242
Circular confidence region, given by single value of horizontal uncertainty (meter) 930
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 14
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) 0.41549
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 92962401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-19 18:29:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SGO.HHZ. 2021-07-19T18:18:19.44 3.0 undecidable manual P -0.24 0
IV.POFI.HHZ. 2021-07-19T18:18:13.00 3.0 undecidable manual P -0.82 0
IV.TRIV.HHZ. 2021-07-19T18:18:12.74 1.0 undecidable manual S 3 0.375 50 -0.26 25
IV.VITU.HHZ. 2021-07-19T18:18:08.19 0.6 undecidable manual S 159 0.2239 108 0.29 50
IV.RNI2.HHZ. 2021-07-19T18:18:07.30 0.6 undecidable manual P 319 0.4155 50 -0.41 47
IV.SACR.HHZ. 2021-07-19T18:18:06.08 1.0 undecidable manual S 88 0.1385 118 1.23 18
IV.BSSO.HHZ. 2021-07-19T18:18:06.40 1.0 undecidable manual S 19 0.1628 114 0.7 23
IV.TRIV.HHZ. 2021-07-19T18:18:06.96 0.3 undecidable manual P 3 0.375 50 -0.04 77
IV.PIGN.HHZ. 2021-07-19T18:18:06.73 0.6 undecidable manual P 233 0.3202 50 0.65 44
IV.VAGA.HHZ. 2021-07-19T18:18:04.12 0.3 undecidable manual P 276 0.2167 109 0.22 77
IV.VITU.HHZ. 2021-07-19T18:18:03.80 0.3 undecidable manual P 159 0.2239 108 -0.26 76
IV.SACR.HHZ. 2021-07-19T18:18:02.16 0.3 undecidable manual P 88 0.1385 118 -0.14 79
IV.BSSO.HHZ. 2021-07-19T18:18:02.80 0.3 undecidable manual P 19 0.1628 114 0.01 81
IV.PTRJ.HHZ. 2021-07-19T18:18:01.95 0.6 undecidable manual S 169 0.0288 159 0.09 54
IV.SGG.HHZ. 2021-07-19T18:18:01.79 0.3 undecidable manual P 267 0.107 125 0.1 80
IV.PTRJ.HHZ. 2021-07-19T18:18:00.07 0.1 undecidable manual P 169 0.0288 159 -0.5 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SGG.HHN. ML:2 0.001225 0.44 AML other m 2021-07-19T18:18:05.80
IV.SGG.HNE. ML:2.2 0.00202 0.48 AML other m 2021-07-19T18:18:07.29
IV.SGG.HHE. ML:2.1 0.001745 1.6 AML other m 2021-07-19T18:18:07.05
IV.SGG.HNN. ML:2 0.001315 1.02 AML other m 2021-07-19T18:18:08.31
IV.SACR.HNE. ML:0 0.0009355 0.92 AML other m 2021-07-19T18:18:08.92
IV.SACR.HHE. ML:0 0.000919 0.88 AML other m 2021-07-19T18:18:08.90
IV.BSSO.HNN. ML:0 0.0007275 0.54 AML other m 2021-07-19T18:18:09.72
IV.BSSO.HHN. ML:0 0.0007535 0.54 AML other m 2021-07-19T18:18:09.72
IV.VITU.HHN. ML:2.1 0.000748 0.46 AML other m 2021-07-19T18:18:10.59
IV.SACR.HNN. ML:0 0.0009965 0.82 AML other m 2021-07-19T18:18:10.02
IV.SACR.HHN. ML:0 0.0010755 0.82 AML other m 2021-07-19T18:18:10.02
IV.VAGA.HHE. ML:1.8 0.0004 1.2 AML other m 2021-07-19T18:18:10.67
IV.VAGA.HNE. ML:2 0.0006705 0.84 AML other m 2021-07-19T18:18:10.49
IV.VAGA.HNN. ML:2.1 0.0007655 1.36 AML other m 2021-07-19T18:18:10.93
IV.BSSO.HHE. ML:0 0.0007275 1.64 AML other m 2021-07-19T18:18:10.12
IV.BSSO.HNE. ML:0 0.000702 1.64 AML other m 2021-07-19T18:18:10.12
IV.VITU.HHE. ML:2 0.0005635 0.32 AML other m 2021-07-19T18:18:11.15
IV.VAGA.HHN. ML:2.1 0.000808 0.34 AML other m 2021-07-19T18:18:14.46
IV.PIGN.HHE. ML:0 0.00012255 1.48 AML other m 2021-07-19T18:18:19.01
IV.TRIV.HHE. ML:1.6 0.0001462 0.44 AML other m 2021-07-19T18:18:20.40
IV.TRIV.HNE. ML:1.6 0.00014175 0.52 AML other m 2021-07-19T18:18:20.40
IV.RNI2.HHE. ML:1.6 0.00012145 0.62 AML other m 2021-07-19T18:18:20.35
IV.TRIV.HHN. ML:1.8 0.0001945 0.72 AML other m 2021-07-19T18:18:21.56
IV.TRIV.HNN. ML:1.8 0.0001825 0.7 AML other m 2021-07-19T18:18:21.58
IV.PIGN.HHN. ML:0 9.24E-5 0.5 AML other m 2021-07-19T18:18:21.71
IV.RNI2.HHN. ML:1.8 0.0001685 0.66 AML other m 2021-07-19T18:18:23.79
IV.POFI.HHN. ML:1.2 2.585E-5 0.98 AML other m 2021-07-19T18:18:31.58
IV.POFI.HHE. ML:1.2 2.54E-5 1.34 AML other m 2021-07-19T18:18:40.30
IV.PTRJ.HHE. ML:0 5.1835535E-5 0.4864 AML other m 2021-07-19T18:18:02.80
IV.PTRJ.HHN. ML:0 0.010755509 0.2816 AML other m 2021-07-19T18:18:01.49
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