Earthquake with magnitude of ML 1.8 on date 22-01-2021 and time 14:01:55 (Italy) in region 2 km N Castel di Sangro (AQ)

A magnitude ML 1.8 earthquake occured in region: 2 km N Castel di Sangro (AQ), on

  • 22-01-2021 13:01:55 (UTC)
  • 22-01-2021 14:01:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.81, 14.1 at 12 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
Castel di Sangro AQ 2 6538 6538
Roccaraso AQ 5 1627 8165
San Pietro Avellana IS 7 503 8668
Rivisondoli AQ 8 700 9368
Scontrone AQ 9 574 9942
Ateleta AQ 10 1181 11123
Pescocostanzo AQ 10 1128 12251
Alfedena AQ 10 864 13115
Montenero Val Cocchiara IS 11 538 13653
Barrea AQ 11 726 14379
Rionero Sannitico IS 11 1118 15497
Castel del Giudice IS 12 346 15843
Vastogirardi IS 14 704 16547
Capracotta IS 14 903 17450
Gamberale CH 14 320 17770
Forlì del Sannio IS 14 675 18445
Civitella Alfedena AQ 14 296 18741
Villetta Barrea AQ 15 653 19394
Sant'Angelo del Pesco IS 15 364 19758
Acquaviva d'Isernia IS 15 425 20183
Roccasicura IS 16 550 20733
Pizzone IS 17 329 21062
Cerro al Volturno IS 17 1281 22343
Pizzoferrato CH 17 1130 23473
Castel San Vincenzo IS 17 516 23989
Rocca Pia AQ 18 178 24167
Pescopennataro IS 18 285 24452
Carovilli IS 19 1359 25811
Palena CH 20 1392 27203

Municipalities with at least 50000 inhabitants

An earthquake occurred to
61 Km S of Chieti (51815 inhabitants)
74 Km S of Pescara (121014 inhabitants)
79 Km S of Montesilvano (53738 inhabitants)
84 Km N of Caserta (76326 inhabitants)
84 Km SE of L'Aquila (69753 inhabitants)
93 Km N of Aversa (53047 inhabitants)
94 Km NW of Benevento (60091 inhabitants)
98 Km N of Giugliano in Campania (122974 inhabitants)
98 Km N of Acerra (59573 inhabitants)
100 Km N of Afragola (65057 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 1.8 2021-01-22
13:01:55
41.81 14.1 13 2021-01-22
13:18:10
Sala Sismica INGV-Roma 86454691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-22 13:01:55 ± 0.06
Latitude 41.81 ± 0.00
Longitude 14.10 ± 0.00
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86454691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 428
Semi-minor axis of confidence ellipse (meter) 106
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 262
Circular confidence region, given by single value of horizontal uncertainty (meter) 430
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.61873
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 20
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 86454691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-22 13:18:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HPAC.HHZ. 2021-01-22T13:03:24.62 3.0 undecidable manual Pg 8.91 0
IV.CAGR.HHZ. 2021-01-22T13:03:11.28 3.0 undecidable manual Pg 8.65 0
IV.HCRL.HHZ. 2021-01-22T13:03:08.22 3.0 positive manual Pn 0.3 0
IV.CAVT.HHZ. 2021-01-22T13:03:04.92 3.0 positive manual Pn 1.56 0
IV.APEC.HHZ. 2021-01-22T13:03:03.63 3.0 undecidable manual Sg 2.31 0
IV.GIZZ.HHZ. 2021-01-22T13:02:51.28 3.0 undecidable manual Pg 1.55 0
IV.RIBO.EHZ.01 2021-01-22T13:02:43.25 3.0 undecidable manual Pg 4.7 0
IV.SGRT.HHZ. 2021-01-22T13:02:37.03 3.0 undecidable manual S -3.82 0
TV.SF04.EHZ. 2021-01-22T13:02:34.70 3.0 undecidable manual Pg 2.39 0
IV.GAVE.HNZ. 2021-01-22T13:02:33.45 3.0 undecidable manual S -6.31 0
IX.CSG3.HNZ.01 2021-01-22T13:02:23.01 3.0 undecidable manual Pg -1.58 0
IV.T0110.HHZ. 2021-01-22T13:02:12.83 0.6 undecidable manual S 330 0.4865 92 0.44 43
IV.LRP.EHZ. 2021-01-22T13:02:10.88 0.6 undecidable manual S 248 0.4173 92 0.54 44
IV.VVLD.HHZ. 2021-01-22T13:02:08.71 0.6 undecidable manual S 280 0.3633 93 -0.01 48
IT.SULP.HGE. 2021-01-22T13:02:07.61 0.3 undecidable manual S 335 0.3067 94 0.55 65
IV.POFI.HHZ. 2021-01-22T13:02:07.11 0.6 undecidable manual S 253 0.3058 94 0.09 49
IT.SULA.HNZ. 2021-01-22T13:02:07.53 0.6 undecidable manual S 332 0.3004 94 0.67 41
IV.VCEL.EHE. 2021-01-22T13:02:07.56 0.3 undecidable manual P 342 0.6187 91 0.06 69
IV.FAGN.HHZ. 2021-01-22T13:02:06.83 0.3 undecidable manual P 320 0.5989 91 -0.34 65
IV.PTQR.HHZ. 2021-01-22T13:02:06.36 0.3 undecidable manual P 293 0.5648 92 -0.23 67
IV.LPEL.HHZ. 2021-01-22T13:02:05.10 0.6 undecidable manual S 14 0.2464 95 -0.17 49
IV.SGG.HNE. 2021-01-22T13:02:05.11 0.6 undecidable manual P 154 0.4685 92 0.18 46
IV.INTR.HHZ. 2021-01-22T13:02:05.48 0.3 undecidable manual S 324 0.2518 95 0.04 74
IT.OPI.HGN. 2021-01-22T13:02:04.01 0.6 undecidable manual S 261 0.2059 98 -0.08 49
IV.T0110.HHZ. 2021-01-22T13:02:04.99 0.1 undecidable manual P 330 0.4865 92 -0.26 91
IV.CERA.HHE. 2021-01-22T13:02:04.65 0.6 undecidable manual S 197 0.2185 97 0.18 49
IV.BSSO.HHE. 2021-01-22T13:02:04.78 0.3 undecidable manual P 125 0.4497 92 0.17 70
IV.VAGA.HHE. 2021-01-22T13:02:03.82 0.3 undecidable manual P 166 0.4038 92 -0.01 72
IV.MCI.EHZ. 2021-01-22T13:02:03.78 0.3 undecidable manual P 215 0.3831 93 0.3 69
IV.MIDA.HHZ. 2021-01-22T13:02:03.68 0.6 undecidable manual S 146 0.1996 98 -0.23 48
IV.LRP.EHZ. 2021-01-22T13:02:03.86 0.1 undecidable manual P 248 0.4173 92 -0.21 92
IT.SULA.HNZ. 2021-01-22T13:02:02.00 0.1 undecidable manual P 332 0.3004 94 -0.06 98
IV.VVLD.HHZ. 2021-01-22T13:02:02.76 0.1 undecidable manual P 280 0.3633 93 -0.37 90
IT.SULP.HGE. 2021-01-22T13:02:02.06 0.1 undecidable manual P 335 0.3067 94 -0.12 97
IV.TRIV.HHZ. 2021-01-22T13:02:02.73 0.1 undecidable manual P 97 0.3354 93 0.07 97
IV.INTR.HHZ. 2021-01-22T13:02:01.11 0.1 positive manual P 324 0.2518 95 -0.13 97
IV.RNI2.HHZ. 2021-01-22T13:02:01.46 0.6 undecidable manual S 161 0.1106 120 0.08 51
IV.LPEL.HHZ. 2021-01-22T13:02:01.24 0.3 undecidable manual P 14 0.2464 95 0.09 73
IV.POFI.HHZ. 2021-01-22T13:02:01.99 0.1 positive manual P 253 0.3058 94 -0.16 95
IT.OPI.HGN. 2021-01-22T13:02:00.27 0.1 undecidable manual P 261 0.2059 98 -0.19 97
IV.CERA.HHE. 2021-01-22T13:02:00.89 0.3 undecidable manual P 197 0.2185 97 0.21 73
IV.MIDA.HHZ. 2021-01-22T13:02:00.20 0.1 positive manual P 146 0.1996 98 -0.15 98
IV.RNI2.HHZ. 2021-01-22T13:01:59.04 0.1 undecidable manual P 161 0.1106 120 0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RNI2.HHN. ML:1.8 0.00064841595 0.1216 AML other m 2021-01-22T13:02:02.81
IV.RNI2.HNN. ML:1.8 0.00060061535 0.1216 AML other m 2021-01-22T13:02:02.81
IV.MIDA.HNE. ML:1.9 0.00056118735 0.1216 AML other m 2021-01-22T13:02:05.20
IV.MIDA.HHN. ML:2 0.0006267526 0.1216 AML other m 2021-01-22T13:02:05.20
IV.MIDA.HHE. ML:1.9 0.0004847723 0.0832 AML other m 2021-01-22T13:02:04.18
IV.MIDA.HNN. ML:1.8 0.0004235141 0.0832 AML other m 2021-01-22T13:02:04.18
IV.INTR.HHE. ML:1.9 0.0003808046 0.1792 AML other m 2021-01-22T13:02:05.76
IV.INTR.HNE. ML:1.8 0.0003519214 0.16 AML other m 2021-01-22T13:02:05.77
IV.LPEL.HHN. ML:1.8 0.000344 0.14 AML other m 2021-01-22T13:02:06.63
IV.INTR.HHN. ML:2 0.00051920995 0.1216 AML other m 2021-01-22T13:02:06.35
IV.RNI2.HHE. ML:1.6 0.00042027795 0.1216 AML other m 2021-01-22T13:02:03.24
IV.RNI2.HNE. ML:1.6 0.00038250275 0.1408 AML other m 2021-01-22T13:02:03.41
IV.INTR.HNN. ML:2 0.0004720541 0.1216 AML other m 2021-01-22T13:02:06.35
IV.LPEL.HHE. ML:1.7 0.0002851534 0.1024 AML other m 2021-01-22T13:02:07.87
IV.VVLD.HHN. ML:1.7 0.00017288295 0.16 AML other m 2021-01-22T13:02:09.06
IV.VVLD.HHE. ML:1.6 0.0001246087 0.256 AML other m 2021-01-22T13:02:11.01
IV.T0110.HHN. ML:1.8 0.0001641888 0.2368 AML other m 2021-01-22T13:02:18.15
IV.T0110.HHE. ML:1.9 0.00019 1.02 AML other m 2021-01-22T13:02:14.33
IV.FAGN.HHN. ML:1.8 0.00012652665 0.32 AML other m 2021-01-22T13:02:19.99
IV.FAGN.HHE. ML:2 0.000176 0.62 AML other m 2021-01-22T13:02:21.52
IV.LPEL.HNE. ML:1.7 0.00026171345 0.0896 AML other m 2021-01-22T13:02:07.87
IV.LPEL.HNN. ML:1.8 0.0003195783 0.128 AML other m 2021-01-22T13:02:06.63
IV.POFI.HHE. ML:1.2 7.1802825E-5 0.1792 AML other m 2021-01-22T13:02:07.85
IV.POFI.HHN. ML:1.3 7.4999E-5 0.2368 AML other m 2021-01-22T13:02:07.40
IV.VVLD.HNE. ML:1.6 0.00013824679 0.2624 AML other m 2021-01-22T13:02:11.02
IV.VVLD.HNN. ML:1.7 0.0001529496 0.1536 AML other m 2021-01-22T13:02:09.06
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download