Earthquake with magnitude of ML 1.0 on date 26-12-2021 and time 02:28:10 (Italy) in region 5 km E Atella (PZ)

A magnitude ML 1.0 earthquake occured in region: 5 km E Atella (PZ), on

  • 26-12-2021 01:28:10 (UTC)
  • 26-12-2021 02:28:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.8590, 15.7090 at 26 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Atella PZ 5 3827 3827
Filiano PZ 5 2926 6753
Ripacandida PZ 6 1744 8497
Rionero in Vulture PZ 8 13230 21727
Ginestra PZ 8 747 22474
Barile PZ 10 2785 25259
Maschito PZ 12 1670 26929
Forenza PZ 13 2122 29051
Rapolla PZ 14 4432 33483
Ruvo del Monte PZ 14 1083 34566
Avigliano PZ 14 11577 46143
San Fele PZ 15 3004 49147
Venosa PZ 15 11863 61010
Melfi PZ 16 17767 78777
Ruoti PZ 16 3579 82356
Rapone PZ 18 990 83346
Bella PZ 18 5171 88517
Pietragalla PZ 19 4160 92677

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Potenza (67122 inhabitants)
48 Km SW of Cerignola (58396 inhabitants)
64 Km SW of Andria (100440 inhabitants)
67 Km E of Battipaglia (50786 inhabitants)
69 Km S of Foggia (151991 inhabitants)
70 Km SW of Barletta (94814 inhabitants)
71 Km W of Altamura (70396 inhabitants)
75 Km SW of Trani (56217 inhabitants)
77 Km E of Avellino (54857 inhabitants)
78 Km W of Matera (60436 inhabitants)
79 Km SW of Bisceglie (55422 inhabitants)
82 Km E of Salerno (135261 inhabitants)
83 Km E of Benevento (60091 inhabitants)
84 Km W of Molfetta (59874 inhabitants)
86 Km E of Cava de' Tirreni (53659 inhabitants)
87 Km S of Manfredonia (57279 inhabitants)
87 Km W of Bitonto (55540 inhabitants)
96 Km S of San Severo (53905 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 2021-12-26
01:28:10
40.8592 15.7088 26 2022-03-30
13:04:42
Bollettino Sismico Italiano INGV 102282241
Reviewed
Rev100
ML 1.4 2021-12-26
01:28:10
40.9188 15.6715 10 2021-12-26
01:37:13
Sala Sismica INGV-Roma 98987051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-26 01:28:10 ± 0.21
Latitude 40.8592 ± 0.0081
Longitude 15.7088 ± 0.0095
Depth (km) 26 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 102282241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 938
Semi-minor axis of confidence ellipse (meter) 200
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 147
Circular confidence region, given by single value of horizontal uncertainty (meter) 940.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.13130
Epicentral distance of station farthest from the epicenter (degree) 0.76173
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.6
Num. used stations 4
Type of magnitude ML
Reference to an origin 98987051
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-26 01:37:13

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 102282241
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-23 10:52:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OT.OT07.EHE. 2021-12-26T01:28:36.14 0.6 undecidable manual S 1 84.5487 101 0.29 42
IV.CDRU.HNZ. 2021-12-26T01:28:27.95 0.6 undecidable manual S 220 53.3022 109 0.17 47
OT.OT07.EHE. 2021-12-26T01:28:25.76 0.3 undecidable manual P 1 84.5487 101 0.65 56
IV.MRVN.HHN. 2021-12-26T01:28:25.89 0.1 undecidable manual S 61 46.5201 112 -0.21 95
IV.SNAL.HNE. 2021-12-26T01:28:24.40 0.6 undecidable manual S 280 42.5241 115 -0.72 41
IX.PGN3.HHN. 2021-12-26T01:28:23.34 0.6 undecidable manual S 167 32.6451 122 0.54 45
IV.MCEL.HHN. 2021-12-26T01:28:21.18 0.3 undecidable manual P 172 59.7957 107 -0.23 68
IV.PALZ.HHZ. 2021-12-26T01:28:20.55 0.6 undecidable manual S 66 23.0547 133 -0.21 49
IV.CDRU.HNZ. 2021-12-26T01:28:20.42 0.3 undecidable manual P 220 53.3022 109 -0.03 72
IV.ACER.HHZ. 2021-12-26T01:28:20.46 0.3 undecidable manual S 112 21.1677 136 0.06 76
IV.MRLC.HHZ. 2021-12-26T01:28:20.55 0.6 undecidable manual S 238 21.6672 135 0.05 51
IX.RDM3.HHZ.02 2021-12-26T01:28:19.64 0.6 undecidable manual S 277 14.5743 147 0.34 48
IV.MRVN.HHN. 2021-12-26T01:28:19.34 0.1 undecidable manual P 61 46.5201 112 -0.14 96
IV.SNAL.HNE. 2021-12-26T01:28:19.78 0.3 undecidable manual P 280 42.5241 115 0.86 56
IX.SNR3.EHZ.02 2021-12-26T01:28:18.28 0.3 undecidable manual P 253 45.4212 113 -1.05 53
IX.PGN3.HHN. 2021-12-26T01:28:17.91 0.3 undecidable manual P 167 32.6451 122 0.34 70
IV.ACER.HHZ. 2021-12-26T01:28:16.30 0.1 undecidable manual P 112 21.1677 136 0.11 100
IV.MRLC.HHZ. 2021-12-26T01:28:16.09 0.3 undecidable manual P 238 21.6672 135 -0.16 74
IX.RDM3.HHZ.02 2021-12-26T01:28:15.62 0.6 undecidable manual P 277 14.5743 147 0.07 51
IV.PALZ.HHZ. 2021-12-26T01:28:15.97 0.3 undecidable manual P 66 23.0547 133 -0.43 71
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ACER.HHE. ML:1.1 0.000061782095 0.38 AML other m 2021-12-26T01:28:21.21
IV.ACER.HHN. ML:0.8 0.000027991180499999997 0.14 AML other m 2021-12-26T01:28:21.36
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