Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 27-03-2021 and time 13:16:03 (UTC) in region 4 km NW Carovilli (IS)

A magnitude ML 1.0 earthquake occured in region: 4 km NW Carovilli (IS), on

  • 27-03-2021 13:16:03 (UTC)
  • 27-03-2021 14:16:03 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7320, 14.2580 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
Carovilli IS 4 1359 1359
Roccasicura IS 4 550 1909
Vastogirardi IS 5 704 2613
Forlì del Sannio IS 8 675 3288
Pescolanciano IS 9 855 4143
San Pietro Avellana IS 9 503 4646
Miranda IS 10 1047 5693
Rionero Sannitico IS 10 1118 6811
Pietrabbondante IS 11 759 7570
Acquaviva d'Isernia IS 11 425 7995
Capracotta IS 12 903 8898
Sessano del Molise IS 12 727 9625
Chiauci IS 12 233 9858
Agnone IS 12 5139 14997
Castelverrino IS 12 115 15112
Pesche IS 13 1661 16773
Castel di Sangro AQ 14 6538 23311
Castel del Giudice IS 14 346 23657
Poggio Sannita IS 14 702 24359
Civitanova del Sannio IS 14 945 25304
Ateleta AQ 15 1181 26485
Cerro al Volturno IS 15 1281 27766
Montenero Val Cocchiara IS 16 538 28304
Isernia IS 16 21842 50146
Carpinone IS 16 1157 51303
Pescopennataro IS 17 285 51588
Fornelli IS 17 1909 53497
Bagnoli del Trigno IS 17 735 54232
Sant'Angelo del Pesco IS 17 364 54596
Belmonte del Sannio IS 17 768 55364
Pettoranello del Molise IS 18 460 55824
Scontrone AQ 18 574 56398
Castel San Vincenzo IS 18 516 56914
Alfedena AQ 19 864 57778
Rocchetta a Volturno IS 19 1113 58891
Duronia CB 19 405 59296
Colli a Volturno IS 19 1349 60645
Roccaraso AQ 20 1627 62272
Pizzone IS 20 329 62601
Gamberale CH 20 320 62921

Municipalities with at least 50000 inhabitants

An earthquake occurred to
69 Km S of Chieti (51815 inhabitants)
73 Km N of Caserta (76326 inhabitants)
80 Km NW of Benevento (60091 inhabitants)
82 Km S of Pescara (121014 inhabitants)
84 Km N of Aversa (53047 inhabitants)
88 Km S of Montesilvano (53738 inhabitants)
88 Km N of Acerra (59573 inhabitants)
89 Km N of Giugliano in Campania (122974 inhabitants)
90 Km N of Afragola (65057 inhabitants)
92 Km N of Casoria (77642 inhabitants)
93 Km N of Marano di Napoli (59874 inhabitants)
93 Km W of San Severo (53905 inhabitants)
99 Km SE of L'Aquila (69753 inhabitants)
99 Km N of Napoli (974074 inhabitants)
99 Km N of Pozzuoli (81661 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 1.0 2021-03-27
13:16:03		 41.7317 14.2583 19 2021-07-12
16:55:06		 Bollettino Sismico Italiano INGV 89088721
Reviewed
Rev100 		ML 1.4 2021-03-27
13:16:03		 41.7202 14.2578 16 2021-03-27
13:23:59		 Sala Sismica INGV-Roma 88515971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-27 13:16:03 ± 0.08
Latitude 41.7317 ± 0.0036
Longitude 14.2583 ± 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 89088721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 370
Semi-minor axis of confidence ellipse (meter) 31
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 207
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 90
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.49283
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 89088721
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-14 09:42:33

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 88515971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-27 13:23:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ERC.EHZ. 2021-03-27T13:17:58.71 3.0 undecidable manual Sg 8.17 0
IV.FIR.HHZ. 2021-03-27T13:17:40.38 3.0 undecidable manual Sg 11.49 0
IV.ZONE.HHZ. 2021-03-27T13:17:35.27 3.0 negative manual Pg 16.41 0
GU.GRAM.HHZ. 2021-03-27T13:17:22.74 3.0 positive manual Pg 16 0
IV.CADC.EHZ. 2021-03-27T13:17:15.69 3.0 undecidable manual Pn 0.14 0
IV.VISG.HHZ. 2021-03-27T13:17:01.96 3.0 negative manual Pg 7.88 0
IV.ARVD.HHZ. 2021-03-27T13:16:39.14 3.0 undecidable manual Pg 1.7 0
IV.PTRP.HHZ. 2021-03-27T13:16:32.67 3.0 negative manual Pg -0.98 0
IV.VVLD.HHZ. 2021-03-27T13:16:20.73 0.3 undecidable manual S 286 54.7008 100 -0.16 69
IV.INTR.HHZ. 2021-03-27T13:16:17.83 0.3 undecidable manual S 317 42.624 104 0.09 72
IV.VAGA.HHZ. 2021-03-27T13:16:15.96 0.6 undecidable manual S 183 35.1426 108 0.14 48
IV.LPEL.HHZ. 2021-03-27T13:16:15.86 0.3 undecidable manual S 350 35.5422 108 -0.05 73
IV.CERA.HHZ. 2021-03-27T13:16:13.36 0.3 undecidable manual S 233 24.8529 118 0.09 75
IV.TRIV.HHZ. 2021-03-27T13:16:13.32 0.3 undecidable manual S 81 24.4533 118 0.13 73
IV.VVLD.HHZ. 2021-03-27T13:16:13.29 0.3 undecidable manual P 286 54.7008 100 -0.31 67
IV.MCI.EHE. 2021-03-27T13:16:12.36 1.0 undecidable manual P 234 45.5211 103 0.14 24
IV.SGG.HHN. 2021-03-27T13:16:11.49 0.3 undecidable manual P 165 39.5271 106 0.16 71
IV.INTR.HHZ. 2021-03-27T13:16:11.79 0.3 undecidable manual P 317 42.624 104 0 73
IV.PTRJ.HNZ. 2021-03-27T13:16:11.93 0.6 undecidable manual P 151 46.5201 103 -0.44 44
IV.LPEL.HHZ. 2021-03-27T13:16:10.90 0.3 undecidable manual P 350 35.5422 108 0.17 72
IV.MIDA.HHZ. 2021-03-27T13:16:10.17 0.3 undecidable manual S 182 9.9789 147 -0.12 75
IV.BSSO.HHE. 2021-03-27T13:16:10.90 0.3 undecidable manual P 126 34.6431 108 0.3 69
IV.RNI2.HHZ. 2021-03-27T13:16:10.46 0.3 undecidable manual S 250 9.2796 149 0.26 74
IV.TST01.HHZ. 2021-03-27T13:16:10.54 3.0 undecidable manual S 80 10.7781 145 0.12 50
IV.VAGA.HHZ. 2021-03-27T13:16:10.63 0.3 undecidable manual P 183 35.1426 108 -0.04 74
IV.CERA.HHZ. 2021-03-27T13:16:09.14 0.3 undecidable manual P 233 24.8529 118 -0.06 75
IV.TRIV.HHZ. 2021-03-27T13:16:09.05 0.3 undecidable manual P 81 24.4533 118 -0.11 74
IV.RNI2.HHZ. 2021-03-27T13:16:07.61 0.1 positive manual P 250 9.2796 149 0.18 100
IV.TST01.HHZ. 2021-03-27T13:16:07.33 3.0 undecidable manual P 80 10.7781 145 -0.23 99
IV.MIDA.HHZ. 2021-03-27T13:16:07.29 0.1 positive manual P 182 9.9789 147 -0.19 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIV.HHE. ML:0.8 0.000035041585 0.64 AML other m 2021-03-27T13:16:13.14
IV.TRIV.HHN. ML:1.0 0.000052259689999999996 0.7424 AML other m 2021-03-27T13:16:13.56
IV.LPEL.HHN. ML:0.8 0.00002638529 0.9408 AML other m 2021-03-27T13:16:15.82
IV.VAGA.HHE. ML:0.8 0.000027121449999999998 0.3968 AML other m 2021-03-27T13:16:16.20
IV.VAGA.HHN. ML:0.9 0.000030321649999999998 0.4608 AML other m 2021-03-27T13:16:16.02
IV.INTR.HHE. ML:0.0 0.000035429395 0.1216 AML other m 2021-03-27T13:16:18.34
IV.INTR.HHN. ML:0.0 0.00003494125500000001 2.4192 AML other m 2021-03-27T13:16:18.55
IV.VVLD.HHN. ML:1.0 0.000021001555000000003 0.9984 AML other m 2021-03-27T13:16:21.09
IV.VVLD.HHE. ML:1.4 0.00005964999999999999 0.38 AML other m 2021-03-27T13:16:21.30
IV.CERA.HHE. ML:1.0 0.0000451 0.36 AML other m 2021-03-27T13:16:22.61
IV.CERA.HHN. ML:0.0 0.000029394694999999998 0.8 AML other m 2021-03-27T13:16:13.36
IV.MIDA.HNE. ML:0.0 0.0005655981 0.1792 AML other m 2021-03-27T13:16:10.20
IV.MIDA.HHN. ML:0.0 0.0006580816499999999 0.1792 AML other m 2021-03-27T13:16:10.20
IV.CERA.HNN. ML:0.8 0.000035895925000000005 0.8 AML other m 2021-03-27T13:16:13.36
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