Earthquake with magnitude of ML 1.4 on date 04-08-2021 and time 08:09:10 (Italy) in region 3 km S Vastogirardi (IS)

A magnitude ML 1.4 earthquake occured in region: 3 km S Vastogirardi (IS), on

  • 04-08-2021 06:09:10 (UTC)
  • 04-08-2021 08:09:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.749, 14.25 at 18 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
Vastogirardi IS 3 704 704
Carovilli IS 5 1359 2063
Roccasicura IS 6 550 2613
San Pietro Avellana IS 7 503 3116
Forlì del Sannio IS 8 675 3791
Capracotta IS 10 903 4694
Rionero Sannitico IS 10 1118 5812
Pescolanciano IS 11 855 6667
Pietrabbondante IS 12 759 7426
Miranda IS 12 1047 8473
Agnone IS 12 5139 13612
Acquaviva d'Isernia IS 12 425 14037
Castel del Giudice IS 12 346 14383
Castel di Sangro AQ 12 6538 20921
Castelverrino IS 13 115 21036
Ateleta AQ 13 1181 22217
Chiauci IS 14 233 22450
Poggio Sannita IS 14 702 23152
Sessano del Molise IS 14 727 23879
Pescopennataro IS 15 285 24164
Sant'Angelo del Pesco IS 15 364 24528
Pesche IS 16 1661 26189
Civitanova del Sannio IS 16 945 27134
Montenero Val Cocchiara IS 16 538 27672
Cerro al Volturno IS 16 1281 28953
Belmonte del Sannio IS 17 768 29721
Scontrone AQ 18 574 30295
Gamberale CH 18 320 30615
Alfedena AQ 18 864 31479
Roccaraso AQ 18 1627 33106
Isernia IS 18 21842 54948
Bagnoli del Trigno IS 18 735 55683
Fornelli IS 18 1909 57592
Carpinone IS 19 1157 58749
Castel San Vincenzo IS 19 516 59265
Rosello CH 19 237 59502
Pizzoferrato CH 19 1130 60632
Rocchetta a Volturno IS 19 1113 61745
Pettoranello del Molise IS 20 460 62205
Borrello CH 20 354 62559
Pizzone IS 20 329 62888
Quadri CH 20 815 63703

Municipalities with at least 50000 inhabitants

An earthquake occurred to
67 Km S of Chieti (51815 inhabitants)
75 Km N of Caserta (76326 inhabitants)
80 Km S of Pescara (121014 inhabitants)
82 Km NW of Benevento (60091 inhabitants)
86 Km S of Montesilvano (53738 inhabitants)
86 Km N of Aversa (53047 inhabitants)
90 Km N of Acerra (59573 inhabitants)
91 Km N of Giugliano in Campania (122974 inhabitants)
92 Km N of Afragola (65057 inhabitants)
94 Km N of Casoria (77642 inhabitants)
94 Km W of San Severo (53905 inhabitants)
95 Km N of Marano di Napoli (59874 inhabitants)
97 Km SE of L'Aquila (69753 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.4 2021-08-04
06:09:10
41.7493 14.2505 18 2021-08-04
06:19:06
Sala Sismica INGV-Roma 93653351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-04 06:09:10 ± 0.14
Latitude 41.7493 ± 0.0054
Longitude 14.2505 ± 0.0108
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93653351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 817
Semi-minor axis of confidence ellipse (meter) 374
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 271
Circular confidence region, given by single value of horizontal uncertainty (meter) 820
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.48204
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 93653351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-04 06:19:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ECTS.HHZ. 2021-08-04T06:11:10.14 3.0 undecidable manual Sg 9.22 0
IV.IMOL.HNZ. 2021-08-04T06:10:46.88 3.0 undecidable manual Sg 4.26 0
IV.FIR.HHZ. 2021-08-04T06:10:46.25 3.0 undecidable manual Sg 8.54 0
IV.GIZZ.HHZ. 2021-08-04T06:10:43.80 3.0 undecidable manual Sg 1.66 0
IV.EUCT.HNZ. 2021-08-04T06:10:31.00 3.0 undecidable manual Pn 2.46 0
IV.MMGO.HHZ. 2021-08-04T06:10:27.10 3.0 undecidable manual Pg 10.44 0
IV.APEC.HHZ. 2021-08-04T06:10:20.13 3.0 undecidable manual Sg 0.37 0
SL.LJU.BHZ. 2021-08-04T06:10:11.67 3.0 undecidable manual Pn -6.38 0
IV.GIZZ.HHZ. 2021-08-04T06:10:07.18 3.0 negative manual Pg 4.76 0
IV.TOLF.HHZ. 2021-08-04T06:10:02.81 3.0 undecidable manual Sn -3.39 0
IV.APEC.HHZ. 2021-08-04T06:09:54.52 3.0 negative manual Pg 4.67 0
IV.IMTC.HHZ. 2021-08-04T06:09:47.35 3.0 undecidable manual S -3.04 0
IV.VCEL.EHZ. 2021-08-04T06:09:33.98 3.0 undecidable manual S -4.56 0
IV.VVLD.HHZ. 2021-08-04T06:09:27.49 0.6 undecidable manual S 285 0.482 100 -0.21 46
IV.INTR.HHZ. 2021-08-04T06:09:24.51 0.6 undecidable manual S 316 0.3669 104 0.16 47
IV.PTRJ.HHZ. 2021-08-04T06:09:24.62 3.0 undecidable manual S -4.72 0
IV.VAGA.HHZ. 2021-08-04T06:09:23.79 0.6 undecidable manual S 182 0.3336 106 0.39 45
IV.LPEL.HHZ. 2021-08-04T06:09:22.87 0.6 undecidable manual S 350 0.3013 108 0.39 46
IV.CERA.HHZ. 2021-08-04T06:09:20.82 0.6 undecidable manual S 229 0.2302 115 0.31 47
IV.VVLD.HHZ. 2021-08-04T06:09:20.15 0.1 undecidable manual P 285 0.482 100 -0.4 88
IV.VAGA.HHZ. 2021-08-04T06:09:18.08 0.1 undecidable manual P 182 0.3336 106 0.01 98
IV.INTR.HHZ. 2021-08-04T06:09:18.56 0.1 undecidable manual P 316 0.3669 104 -0.06 97
IV.TST01.HHZ. 2021-08-04T06:09:17.45 0.6 undecidable manual S 90 0.1016 142 -0.04 51
IV.RNI2.HHZ. 2021-08-04T06:09:17.35 0.6 undecidable manual S 238 0.0863 147 0.13 51
IV.LPEL.HHZ. 2021-08-04T06:09:17.62 0.3 negative manual P 350 0.3013 108 0.08 73
IV.MIDA.HHZ. 2021-08-04T06:09:16.87 0.6 undecidable manual S 179 0.107 140 -0.72 42
IV.CERA.HHZ. 2021-08-04T06:09:16.50 0.6 undecidable manual P 229 0.2302 115 0.1 49
IV.RNI2.HHZ. 2021-08-04T06:09:14.68 0.1 undecidable manual P 238 0.0863 147 0.18 100
IV.TST01.HHZ. 2021-08-04T06:09:14.74 1.0 undecidable manual P 90 0.1016 142 0.09 25
IV.MIDA.HHZ. 2021-08-04T06:09:14.60 0.1 positive manual P 179 0.107 140 -0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MIDA.HHE. ML:1.7 0.0004125 1.26 AML other m 2021-08-04T06:09:18.14
IV.MIDA.HHN. ML:1.8 0.0004935 0.38 AML other m 2021-08-04T06:09:18.33
IV.TST01.HHE. ML:1.2 0.000113 0.7 AML other m 2021-08-04T06:09:18.73
IV.TST01.HHN. ML:1.2 0.0001375 0.64 AML other m 2021-08-04T06:09:19.34
IV.LPEL.HHN. ML:1.3 7.09E-5 1.26 AML other m 2021-08-04T06:09:23.96
IV.LPEL.HHE. ML:1.4 8.485E-5 0.42 AML other m 2021-08-04T06:09:23.62
IV.VAGA.HHE. ML:0.9 2.285E-5 1.2 AML other m 2021-08-04T06:09:25.15
IV.INTR.HHE. ML:1.4 7.865E-5 0.54 AML other m 2021-08-04T06:09:25.45
IV.VAGA.HHN. ML:1.2 6.12E-5 0.4 AML other m 2021-08-04T06:09:25.68
IV.INTR.HHN. ML:1.5 0.00010265 1.18 AML other m 2021-08-04T06:09:26.09
IV.VVLD.HHN. ML:1.4 5.565E-5 0.18 AML other m 2021-08-04T06:09:27.68
IV.VVLD.HHE. ML:1.4 6.15E-5 0.34 AML other m 2021-08-04T06:09:27.60
IV.IMOL.HNN. ML:4.6 0.003005 0.06 AML other m 2021-08-04T06:10:03.79
IV.IMOL.HNE. ML:4.5 0.002705 0.06 AML other m 2021-08-04T06:10:04.76
IV.TOLF.HHN. ML:2.1 4.52E-5 0.78 AML other m 2021-08-04T06:10:21.92
IV.TOLF.HHE. ML:2.6 0.000118 1.14 AML other m 2021-08-04T06:10:38.67
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