Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 12-01-2021 and time 12:40:41 (Italy) in region 2 km N San Pietro Avellana (IS)

A magnitude ML 1.4 earthquake occured in region: 2 km N San Pietro Avellana (IS), on

  • 12-01-2021 11:40:41 (UTC)
  • 12-01-2021 12:40:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.8090, 14.1850 at 11 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.

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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
San Pietro Avellana IS 2 503 503
Ateleta AQ 5 1181 1684
Castel del Giudice IS 7 346 2030
Castel di Sangro AQ 7 6538 8568
Capracotta IS 7 903 9471
Vastogirardi IS 7 704 10175
Roccaraso AQ 10 1627 11802
Sant'Angelo del Pesco IS 10 364 12166
Gamberale CH 11 320 12486
Rionero Sannitico IS 11 1118 13604
Pescopennataro IS 12 285 13889
Rivisondoli AQ 12 700 14589
Forlì del Sannio IS 13 675 15264
Roccasicura IS 13 550 15814
Pescocostanzo AQ 13 1128 16942
Pizzoferrato CH 13 1130 18072
Scontrone AQ 14 574 18646
Carovilli IS 14 1359 20005
Montenero Val Cocchiara IS 14 538 20543
Alfedena AQ 15 864 21407
Agnone IS 15 5139 26546
Acquaviva d'Isernia IS 15 425 26971
Quadri CH 16 815 27786
Borrello CH 16 354 28140
Barrea AQ 17 726 28866
Rosello CH 17 237 29103
Pietrabbondante IS 18 759 29862
Civitaluparella CH 18 351 30213
Castelverrino IS 18 115 30328
Cerro al Volturno IS 18 1281 31609
Fallo CH 19 139 31748
Miranda IS 19 1047 32795
Pescolanciano IS 19 855 33650
Poggio Sannita IS 19 702 34352
Roio del Sangro CH 19 103 34455
Montenerodomo CH 20 690 35145
Castel San Vincenzo IS 20 516 35661
Belmonte del Sannio IS 20 768 36429
Palena CH 20 1392 37821
Pizzone IS 20 329 38150

Municipalities with at least 50000 inhabitants

An earthquake occurred to
60 Km S of Chieti (51815 inhabitants)
73 Km S of Pescara (121014 inhabitants)
79 Km S of Montesilvano (53738 inhabitants)
83 Km N of Caserta (76326 inhabitants)
89 Km SE of L'Aquila (69753 inhabitants)
90 Km NW of Benevento (60091 inhabitants)
93 Km N of Aversa (53047 inhabitants)
97 Km N of Acerra (59573 inhabitants)
98 Km N of Giugliano in Campania (122974 inhabitants)
99 Km N of Afragola (65057 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
Reviewed
Rev100 		ML 1.4 2021-01-12
11:40:41		 41.809 14.1852 11 2021-01-12
11:51:14		 Sala Sismica INGV-Roma 86201541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-12 11:40:41 ± 0.12
Latitude 41.8090 ± 0.0063
Longitude 14.1852 ± 0.0097
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86201541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 770
Semi-minor axis of confidence ellipse (meter) 657
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 121
Circular confidence region, given by single value of horizontal uncertainty (meter) 770.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.51801
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 86201541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-12 11:51:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.PZZ.HHZ. 2021-01-12T11:42:28.66 3.0 undecidable manual Pg 21.27 0
IV.NDIM.HNZ. 2021-01-12T11:42:25.39 3.0 undecidable manual Sn -1.96 0
IV.CADC.HNZ. 2021-01-12T11:42:10.10 3.0 positive manual Pg 18.530001 0
IV.RIBO.EHZ.01 2021-01-12T11:42:08.06 3.0 undecidable manual Sg 12.7 0
IV.NDIM.HHZ. 2021-01-12T11:41:56.42 3.0 negative manual Pg 15.63 0
IV.SSP9.EHZ. 2021-01-12T11:41:53.38 3.0 undecidable manual Sg 4.53 0
IV.PII.HHZ. 2021-01-12T11:41:44.67 3.0 negative manual Pg 12.04 0
IV.COR1.EHZ. 2021-01-12T11:41:39.94 3.0 undecidable manual Sn -1.43 0
IV.CMPR.HHZ. 2021-01-12T11:41:32.29 3.0 undecidable manual Sn -1.12 0
IV.RIBO.EHZ.01 2021-01-12T11:41:27.75 3.0 undecidable manual Pg 4.93 0
IV.APEC.HHZ. 2021-01-12T11:41:23.79 3.0 positive manual Pg 6.62 0
IV.MC2.EHZ. 2021-01-12T11:41:23.58 3.0 undecidable manual S -0.86 0
IV.SCHR.EHZ. 2021-01-12T11:41:16.46 3.0 undecidable manual Pn -0.05 0
IV.LRP.EHZ. 2021-01-12T11:40:58.31 0.3 undecidable manual S 250 52.7028 50 0.35 67
IV.POFI.HNZ. 2021-01-12T11:40:54.62 0.3 undecidable manual S 256 40.4262 50 -0.07 72
IV.INTR.HHZ. 2021-01-12T11:40:52.54 0.3 undecidable manual S 314 32.2455 50 0.03 74
IV.T0110.HHZ. 2021-01-12T11:40:51.61 0.3 undecidable manual P 324 57.498 50 -0.06 70
IV.LPEL.HHZ. 2021-01-12T11:40:51.35 0.6 undecidable manual S 360 26.3514 50 0.42 46
IT.OPI.HGZ. 2021-01-12T11:40:51.50 0.3 undecidable manual S 263 29.5482 50 -0.29 70
IV.CERA.HHZ. 2021-01-12T11:40:51.12 0.3 undecidable manual S 211 27.1506 50 -0.03 75
IV.LRP.EHZ. 2021-01-12T11:40:51.02 0.1 undecidable manual P 250 52.7028 50 0.09 94
IV.VAGA.HNZ. 2021-01-12T11:40:49.90 0.1 undecidable manual P 175 43.8228 50 0.34 91
IV.POFI.HNZ. 2021-01-12T11:40:48.92 0.1 undecidable manual P 256 40.4262 50 -0.12 96
IV.MIDA.HHZ. 2021-01-12T11:40:48.42 0.3 undecidable manual S 163 19.3695 119 -0.56 67
IV.RNI2.HHZ. 2021-01-12T11:40:47.62 0.3 undecidable manual S 193 12.0768 131 0.75 63
IT.OPI.HGZ. 2021-01-12T11:40:47.16 0.1 undecidable manual P 263 29.5482 50 -0.2 96
IV.CERA.HHZ. 2021-01-12T11:40:47.00 0.1 undecidable manual P 211 27.1506 50 0 100
IV.INTR.HHZ. 2021-01-12T11:40:47.44 0.3 undecidable manual P 314 32.2455 50 -0.34 69
IV.TRIV.HHZ. 2021-01-12T11:40:47.68 0.3 undecidable manual P 99 30.5472 50 0.17 72
IV.LPEL.HHZ. 2021-01-12T11:40:46.85 0.3 undecidable manual P 360 26.3514 50 -0.02 75
IV.MIDA.HHZ. 2021-01-12T11:40:45.29 0.1 undecidable manual P 163 19.3695 119 -0.45 92
IV.RNI2.HHZ. 2021-01-12T11:40:44.72 0.1 undecidable manual P 193 12.0768 131 0.2 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MIDA.HHE. ML:1.4 0.0001835 0.28 AML other m 2021-01-12T11:40:49.37
IV.MIDA.HHN. ML:1.5 0.00022700000000000002 0.52 AML other m 2021-01-12T11:40:49.68
IV.MIDA.HNE. ML:1.5 0.00021300000000000003 0.52 AML other m 2021-01-12T11:40:49.68
IV.RNI2.HHN. ML:1.5 0.00035 1.54 AML other m 2021-01-12T11:40:50.20
IV.MIDA.HNN. ML:1.5 0.000225 0.84 AML other m 2021-01-12T11:40:51.30
IV.RNI2.HHE. ML:1.5 0.00036899999999999997 0.68 AML other m 2021-01-12T11:40:51.43
IV.LPEL.HHN. ML:1.3 0.0000997 0.16 AML other m 2021-01-12T11:40:52.48
IV.INTR.HHE. ML:1.6 0.00017749999999999998 0.8 AML other m 2021-01-12T11:40:53.21
IV.INTR.HHN. ML:1.6 0.0001595 0.68 AML other m 2021-01-12T11:40:53.60
IV.LPEL.HHE. ML:1.3 0.000111 0.52 AML other m 2021-01-12T11:40:54.04
IV.CERA.HHN. ML:1.2 0.00007764999999999999 0.62 AML other m 2021-01-12T11:40:55.69
IV.VVLD.HHN. ML:1.4 0.00006805 0.88 AML other m 2021-01-12T11:40:56.97
IV.VVLD.HHE. ML:1.3 0.000058700000000000004 0.84 AML other m 2021-01-12T11:40:57.32
IV.LRP.EHN. ML:1.1 0.0000316 0.26 AML other m 2021-01-12T11:40:58.29
IV.LRP.EHE. ML:1.5 0.0000678 0.26 AML other m 2021-01-12T11:40:58.65
IV.CERA.HHE. ML:1.2 0.0000889 0.42 AML other m 2021-01-12T11:41:02.25
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