Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 19-10-2021 and time 03:13:20 (Italy) in region 2 km W Vastogirardi (IS)

A magnitude ML 1.4 earthquake occured in region: 2 km W Vastogirardi (IS), on

  • 19-10-2021 01:13:20 (UTC)
  • 19-10-2021 03:13:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.7710, 14.2320 at 19 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
Vastogirardi IS 2 704 704
San Pietro Avellana IS 4 503 1207
Capracotta IS 8 903 2110
Roccasicura IS 8 550 2660
Carovilli IS 8 1359 4019
Forlì del Sannio IS 9 675 4694
Castel del Giudice IS 9 346 5040
Ateleta AQ 10 1181 6221
Rionero Sannitico IS 10 1118 7339
Castel di Sangro AQ 10 6538 13877
Agnone IS 12 5139 19016
Sant'Angelo del Pesco IS 13 364 19380
Acquaviva d'Isernia IS 13 425 19805
Pescopennataro IS 13 285 20090
Pietrabbondante IS 13 759 20849
Pescolanciano IS 13 855 21704
Castelverrino IS 14 115 21819
Miranda IS 14 1047 22866
Montenero Val Cocchiara IS 15 538 23404
Roccaraso AQ 15 1627 25031
Gamberale CH 15 320 25351
Poggio Sannita IS 15 702 26053
Scontrone AQ 16 574 26627
Chiauci IS 16 233 26860
Cerro al Volturno IS 17 1281 28141
Alfedena AQ 17 864 29005
Sessano del Molise IS 17 727 29732
Pizzoferrato CH 17 1130 30862
Belmonte del Sannio IS 17 768 31630
Rosello CH 18 237 31867
Rivisondoli AQ 18 700 32567
Borrello CH 18 354 32921
Quadri CH 18 815 33736
Pesche IS 18 1661 35397
Civitanova del Sannio IS 18 945 36342
Castel San Vincenzo IS 19 516 36858
Pescocostanzo AQ 19 1128 37986
Roio del Sangro CH 20 103 38089
Fornelli IS 20 1909 39998
Pizzone IS 20 329 40327
Barrea AQ 20 726 41053

Municipalities with at least 50000 inhabitants

An earthquake occurred to
65 Km S of Chieti (51815 inhabitants)
77 Km S of Pescara (121014 inhabitants)
78 Km N of Caserta (76326 inhabitants)
83 Km S of Montesilvano (53738 inhabitants)
85 Km NW of Benevento (60091 inhabitants)
89 Km N of Aversa (53047 inhabitants)
92 Km N of Acerra (59573 inhabitants)
94 Km N of Giugliano in Campania (122974 inhabitants)
94 Km SE of L'Aquila (69753 inhabitants)
95 Km N of Afragola (65057 inhabitants)
96 Km W of San Severo (53905 inhabitants)
96 Km N of Casoria (77642 inhabitants)
97 Km N of Marano di Napoli (59874 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 2021-10-19
01:13:20		 41.7713 14.2317 19 2022-03-30
13:04:13		 Bollettino Sismico Italiano INGV 97003991
Reviewed
Rev100 		ML 1.4 2021-10-19
01:13:21		 41.7742 14.2323 18 2021-10-19
01:18:06		 Sala Sismica INGV-Roma 96744651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-19 01:13:20 ± 0.06
Latitude 41.7713 ± 0.0027
Longitude 14.2317 ± 0.0036
Depth (km) 19 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 97003991

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 325
Semi-minor axis of confidence ellipse (meter) 153
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 230
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.08993
Epicentral distance of station farthest from the epicenter (degree) 0.49732
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 96744651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-19 01:18:06

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 97003991
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-26 14:49:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LRP.EHZ. 2021-10-19T01:13:38.51 0.3 undecidable manual S 256 55.2003 101 0.19 68
IV.VVLD.HHZ. 2021-10-19T01:13:37.20 0.3 undecidable manual S 282 51.5151 102 -0.15 70
IV.POFI.HHZ. 2021-10-19T01:13:35.34 0.3 undecidable manual S 262 43.4232 105 0.08 71
IT.SULA.HNZ. 2021-10-19T01:13:35.23 0.3 undecidable manual S 322 42.4242 105 0.23 68
IT.SULP.HGN. 2021-10-19T01:13:35.33 0.3 undecidable manual S 324 42.9237 105 0.2 69
IV.INTR.HHZ. 2021-10-19T01:13:34.01 0.3 undecidable manual S 315 37.9287 108 0.15 70
IT.OPI.HGZ. 2021-10-19T01:13:32.49 0.6 undecidable manual S 271 33.2445 111 -0.18 47
IV.CERA.HHZ. 2021-10-19T01:13:31.17 0.3 undecidable manual S 223 26.1516 118 0.23 71
IV.LPEL.HHZ. 2021-10-19T01:13:31.76 0.3 undecidable manual S 353 30.8469 113 -0.31 70
IV.LRP.EHZ. 2021-10-19T01:13:30.95 0.3 undecidable manual P 256 55.2003 101 -0.02 71
IV.TST02.HHZ. 2021-10-19T01:13:30.57 0.3 undecidable manual S 28 24.9528 119 -0.09 73
IV.VVLD.HHZ. 2021-10-19T01:13:30.20 0.1 undecidable manual P 282 51.5151 102 -0.21 91
IT.SULP.HGN. 2021-10-19T01:13:29.17 0.3 undecidable manual P 324 42.9237 105 0.04 71
IV.SGG.HHN. 2021-10-19T01:13:29.40 0.3 undecidable manual P 164 44.4222 104 0.05 72
IV.MCI.EHE. 2021-10-19T01:13:29.63 0.6 undecidable manual P 228 46.62 104 -0.05 47
IV.POFI.HHZ. 2021-10-19T01:13:29.06 0.3 undecidable manual P 262 43.4232 105 -0.14 70
IV.INTR.HHZ. 2021-10-19T01:13:28.42 0.1 undecidable manual P 315 37.9287 108 0.03 96
IV.BSSO.HHE. 2021-10-19T01:13:28.82 0.3 undecidable manual P 130 39.0276 107 0.26 69
IV.VAGA.HHZ. 2021-10-19T01:13:28.66 0.1 undecidable manual P 180 39.5271 107 0.04 96
IV.MIDA.HHZ. 2021-10-19T01:13:28.13 0.3 undecidable manual S 173 14.4744 137 -0.31 70
IT.SULA.HNZ. 2021-10-19T01:13:28.77 0.1 undecidable manual P 322 42.4242 105 -0.28 92
IV.TST01.HHZ. 2021-10-19T01:13:28.51 0.3 undecidable manual S 101 13.0758 140 0.31 72
IV.RNI2.HHZ. 2021-10-19T01:13:27.65 0.3 undecidable manual S 221 9.9789 148 -0.07 75
IT.OPI.HGZ. 2021-10-19T01:13:27.63 0.1 undecidable manual P 271 33.2445 111 -0.07 97
IV.LPEL.HHZ. 2021-10-19T01:13:27.53 0.3 undecidable manual P 353 30.8469 113 0.17 71
IV.TST02.HHZ. 2021-10-19T01:13:26.57 0.3 undecidable manual P 28 24.9528 119 0.03 74
IV.CERA.HHZ. 2021-10-19T01:13:26.48 0.3 undecidable manual P 223 26.1516 118 -0.23 71
IV.MIDA.HHZ. 2021-10-19T01:13:25.23 0.1 positive manual P 173 14.4744 137 -0.04 100
IV.TST01.HHZ. 2021-10-19T01:13:25.17 0.3 undecidable manual P 101 13.0758 140 0.05 76
IV.RNI2.HHZ. 2021-10-19T01:13:24.91 0.3 undecidable manual P 221 9.9789 148 0.06 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RNI2.HHE. ML:1.3 0.000142 1.6 AML other m 2021-10-19T01:13:27.84
IV.RNI2.HHN. ML:1.7 0.000378 0.28 AML other m 2021-10-19T01:13:28.26
IV.MIDA.HHN. ML:1.9 0.000507 0.42 AML other m 2021-10-19T01:13:28.62
IV.TST01.HHN. ML:1.1 0.0000935 0.64 AML other m 2021-10-19T01:13:28.53
IV.MIDA.HHE. ML:1.6 0.0002915 1.66 AML other m 2021-10-19T01:13:29.14
IV.TST01.HHE. ML:1.0 0.0000675 0.4 AML other m 2021-10-19T01:13:30.58
IV.TST02.HHN. ML:1.4 0.00013700000000000002 1.6 AML other m 2021-10-19T01:13:31.05
IV.TST02.HHE. ML:1.6 0.000206 0.46 AML other m 2021-10-19T01:13:31.99
IV.LPEL.HHN. ML:1.4 0.0001085 0.12 AML other m 2021-10-19T01:13:33.48
IV.LPEL.HHE. ML:1.6 0.000153 0.1 AML other m 2021-10-19T01:13:33.72
IV.INTR.HHE. ML:1.3 0.00005989999999999999 0.48 AML other m 2021-10-19T01:13:34.73
IV.INTR.HHN. ML:1.3 0.0000586 0.5 AML other m 2021-10-19T01:13:35.50
IV.VVLD.HHE. ML:1.3 0.000047799999999999996 0.32 AML other m 2021-10-19T01:13:37.47
IV.VVLD.HHN. ML:1.3 0.00004815 0.18 AML other m 2021-10-19T01:13:37.73
IV.VAGA.HHN. ML:1.3 0.00006245 0.42 AML other m 2021-10-19T01:13:38.71
IV.VAGA.HHE. ML:0.9 0.000023100000000000002 0.74 AML other m 2021-10-19T01:13:41.58
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