Earthquake with magnitude of ML 1.3 on date 21-01-2020 and time 23:38:44 (Italy) in region 4 km SE San Pietro Avellana (IS)

A magnitude ML 1.3 earthquake occured in region: 4 km SE San Pietro Avellana (IS), on

  • 21-01-2020 22:38:44 (UTC)
  • 21-01-2020 23:38:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.76, 14.2 at 15 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
San Pietro Avellana IS 4 503 503
Vastogirardi IS 5 704 1207
Roccasicura IS 7 550 1757
Rionero Sannitico IS 7 1118 2875
Forlì del Sannio IS 7 675 3550
Castel di Sangro AQ 8 6538 10088
Carovilli IS 9 1359 11447
Capracotta IS 10 903 12350
Ateleta AQ 11 1181 13531
Acquaviva d'Isernia IS 11 425 13956
Castel del Giudice IS 11 346 14302
Montenero Val Cocchiara IS 12 538 14840
Miranda IS 13 1047 15887
Scontrone AQ 14 574 16461
Roccaraso AQ 14 1627 18088
Alfedena AQ 14 864 18952
Pescolanciano IS 14 855 19807
Cerro al Volturno IS 14 1281 21088
Sant'Angelo del Pesco IS 14 364 21452
Agnone IS 15 5139 26591
Pescopennataro IS 15 285 26876
Pietrabbondante IS 15 759 27635
Castelverrino IS 16 115 27750
Gamberale CH 16 320 28070
Castel San Vincenzo IS 17 516 28586
Rivisondoli AQ 17 700 29286
Pizzone IS 17 329 29615
Sessano del Molise IS 17 727 30342
Barrea AQ 18 726 31068
Poggio Sannita IS 18 702 31770
Chiauci IS 18 233 32003
Pesche IS 18 1661 33664
Fornelli IS 18 1909 35573
Rocchetta a Volturno IS 18 1113 36686
Pizzoferrato CH 18 1130 37816
Pescocostanzo AQ 18 1128 38944
Isernia IS 19 21842 60786
Civitanova del Sannio IS 20 945 61731
Belmonte del Sannio IS 20 768 62499
Borrello CH 20 354 62853
Colli a Volturno IS 20 1349 64202
Quadri CH 20 815 65017
Rosello CH 20 237 65254
Scapoli IS 20 680 65934

Municipalities with at least 50000 inhabitants

An earthquake occurred to
66 Km S of Chieti (51815 inhabitants)
77 Km N of Caserta (76326 inhabitants)
78 Km S of Pescara (121014 inhabitants)
84 Km S of Montesilvano (53738 inhabitants)
85 Km NW of Benevento (60091 inhabitants)
88 Km N of Aversa (53047 inhabitants)
92 Km N of Acerra (59573 inhabitants)
93 Km N of Giugliano in Campania (122974 inhabitants)
93 Km SE of L'Aquila (69753 inhabitants)
94 Km N of Afragola (65057 inhabitants)
95 Km N of Casoria (77642 inhabitants)
96 Km N of Marano di Napoli (59874 inhabitants)
98 Km W of San Severo (53905 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
Rev 100 ML 1.3 2020-01-21
22:38:44
41.76 14.2 15 2020-01-21
22:50:17
Sala Sismica INGV-Roma 75709271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-21 22:38:44 ± 0.1
Latitude 41.76 ± 0.00
Longitude 14.20 ± 0.01
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 75709271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 665
Semi-minor axis of confidence ellipse (meter) 632
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) 670
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 165
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
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
Epicentral distance of station farthest from the epicenter (degree) 0.36872
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 75709271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-21 22:50:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.INTR.HHZ. 2020-01-21T22:38:56.56 0.3 undecidable manual S 319 0.3345 100 0.09 70
IV.LPEL.HHZ. 2020-01-21T22:38:54.87 0.3 undecidable manual S 357 0.286 103 -0.19 71
IV.CERA.HHZ. 2020-01-21T22:38:53.08 0.3 undecidable manual S 220 0.214 109 0.08 73
IV.POFI.HHZ. 2020-01-21T22:38:51.41 0.6 positive manual P 263 0.3687 99 -0.37 44
IV.VAGA.HNZ. 2020-01-21T22:38:51.41 0.6 undecidable manual P 176 0.3462 99 0.01 48
IV.INTR.HHZ. 2020-01-21T22:38:51.17 0.6 negative manual P 319 0.3345 100 -0.03 48
IV.TRIV.HHZ. 2020-01-21T22:38:50.32 3.0 undecidable manual P 0
IV.LPEL.HHZ. 2020-01-21T22:38:50.61 0.6 undecidable manual P 357 0.286 103 0.22 46
IV.MIDA.HHZ. 2020-01-21T22:38:50.42 0.1 undecidable manual S 162 0.125 128 -0.25 95
IV.CERA.HHZ. 2020-01-21T22:38:49.20 0.1 undecidable manual P 220 0.214 109 0.01 99
IV.RNI2.HHZ. 2020-01-21T22:38:49.56 0.3 undecidable manual S 213 0.0692 148 0 76
IV.MIDA.HHZ. 2020-01-21T22:38:48.07 0.1 positive manual P 162 0.125 128 0.22 97
IV.RNI2.HHZ. 2020-01-21T22:38:47.27 0.1 undecidable manual P 213 0.0692 148 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RNI2.HNE. ML:1.4 0.0002315 0.48 AML other m 2020-01-21T22:38:50.30
IV.RNI2.HHE. ML:1.4 0.00023 0.72 AML other m 2020-01-21T22:38:50.42
IV.RNI2.HHN. ML:1.4 0.0002485 0.72 AML other m 2020-01-21T22:38:50.48
IV.RNI2.HNN. ML:1.4 0.0002405 0.72 AML other m 2020-01-21T22:38:50.48
IV.MIDA.HHE. ML:1.2 0.000135 1.72 AML other m 2020-01-21T22:38:52.86
IV.MIDA.HHN. ML:1.3 0.00015 0.78 AML other m 2020-01-21T22:38:52.07
IV.LPEL.HHN. ML:1.3 7.865E-5 1.54 AML other m 2020-01-21T22:38:56.81
IV.LPEL.HHE. ML:1.2 6.92E-5 1.48 AML other m 2020-01-21T22:38:56.24
IV.INTR.HHE. ML:1.2 5.83E-5 1.48 AML other m 2020-01-21T22:38:57.85
IV.INTR.HHN. ML:1.5 0.0001058 0.6 AML other m 2020-01-21T22:38:57.27
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