Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 21-03-2023 and time 07:30:17 (Italy) in region 5 km NW Potenza (PZ)

A magnitude ML 1.1 earthquake occured in region: 5 km NW Potenza (PZ), on

  • 21-03-2023 06:30:17 (UTC)
  • 21-03-2023 07:30:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.6680, 15.7540 at 21 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
Potenza PZ 5 67122 67122
Avigliano PZ 8 11577 78699
Ruoti PZ 9 3579 82278
Picerno PZ 11 5985 88263
Pignola PZ 11 6962 95225
Tito PZ 11 7332 102557
Baragiano PZ 14 2671 105228
Pietragalla PZ 14 4160 109388
Vaglio Basilicata PZ 14 2047 111435
Cancellara PZ 16 1309 112744
Filiano PZ 16 2926 115670
Satriano di Lucania PZ 17 2374 118044
Brindisi Montagna PZ 17 908 118952
Abriola PZ 18 1531 120483

Municipalities with at least 50000 inhabitants

An earthquake occurred to
5 Km NW of Potenza (67122 inhabitants)
65 Km E of Battipaglia (50786 inhabitants)
68 Km S of Cerignola (58396 inhabitants)
70 Km W of Altamura (70396 inhabitants)
71 Km W of Matera (60436 inhabitants)
77 Km SW of Andria (100440 inhabitants)
84 Km E of Salerno (135261 inhabitants)
85 Km SW of Barletta (94814 inhabitants)
85 Km E of Avellino (54857 inhabitants)
88 Km SW of Trani (56217 inhabitants)
88 Km E of Cava de' Tirreni (53659 inhabitants)
90 Km SW of Bisceglie (55422 inhabitants)
90 Km S of Foggia (151991 inhabitants)
93 Km SW of Molfetta (59874 inhabitants)
93 Km SW of Bitonto (55540 inhabitants)
97 Km SE of Benevento (60091 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 1.1 2023-03-21
06:30:17		 40.6685 15.7542 21 2024-03-01
17:18:19		 Bollettino Sismico Italiano INGV 124160881
Reviewed
Rev100 		ML 1.0 2023-03-21
06:30:18		 40.6527 15.7705 9 2023-03-21
06:37:32		 Sala Sismica INGV-Roma 115585381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-21 06:30:17 ± 0.36
Latitude 40.6685 ± 0.0135
Longitude 15.7542 ± 0.0142
Depth (km) 21 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 124160881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1381
Semi-minor axis of confidence ellipse (meter) 928
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 217
Circular confidence region, given by single value of horizontal uncertainty (meter) 1380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 112
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.10072
Epicentral distance of station farthest from the epicenter (degree) 0.34534
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 115585381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-21 06:37:32

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 124160881
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-12-20 12:24:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MCEL.HHZ. 2023-03-21T06:30:30.58 0.6 undecidable manual S 174 38.3283 110 -0.14 54
IV.PTRP.HHZ. 2023-03-21T06:30:29.71 0.6 undecidable manual S 122 30.5472 116 0.9 42
IX.SRN3.HHE.02 2023-03-21T06:30:29.29 0.6 undecidable manual S 231 32.1456 115 0.11 56
IX.STN3.EHZ.02 2023-03-21T06:30:26.30 0.6 undecidable manual S 209 17.6712 134 0.35 54
IV.ACER.HHZ. 2023-03-21T06:30:26.31 0.6 undecidable manual S 50 20.5683 129 -0.23 56
IV.MRLC.HHZ. 2023-03-21T06:30:26.60 0.6 undecidable manual S 294 24.3534 123 -0.76 45
IX.BEL3.HNE.01 2023-03-21T06:30:25.82 0.6 undecidable manual S 298 11.1777 148 0.98 44
IV.MCEL.HHZ. 2023-03-21T06:30:24.84 0.3 undecidable manual P 174 38.3283 110 -0.31 79
IX.PGN3.HHZ.02 2023-03-21T06:30:24.04 0.6 undecidable manual S 161 11.2776 147 -0.82 46
IV.PTRP.HHZ. 2023-03-21T06:30:24.32 0.3 undecidable manual P 122 30.5472 116 0.27 79
IX.SRN3.HHE.02 2023-03-21T06:30:24.29 0.3 undecidable manual P 231 32.1456 115 0.02 85
IV.MRLC.HHZ. 2023-03-21T06:30:23.73 0.3 undecidable manual P 294 24.3534 123 0.52 77
IV.ACER.HHZ. 2023-03-21T06:30:22.58 0.3 undecidable manual P 50 20.5683 129 -0.16 84
IX.STN3.EHZ.02 2023-03-21T06:30:22.79 0.3 undecidable manual P 209 17.6712 134 0.39 80
IX.BEL3.HNE.01 2023-03-21T06:30:21.62 0.3 undecidable manual P 298 11.1777 148 -0.14 85
IX.PGN3.HHZ.02 2023-03-21T06:30:21.13 0.1 undecidable manual P 161 11.2776 147 -0.64 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IX.PGN3.HNE.01 ML:1.7 0.0003254829 0.144 AML other m 2023-03-21T06:30:22.13
IV.MRLC.HHE. ML:0.7 0.000024508099999999997 0.5408 AML other m 2023-03-21T06:30:23.49
IX.PGN3.HHE.02 ML:1.1 0.00009520000000000001 0.2 AML other m 2023-03-21T06:30:24.59
IX.PGN3.HHN.02 ML:1.1 0.000085620855 0.32 AML other m 2023-03-21T06:30:24.89
IV.MCEL.HNN. ML:1.3 0.000058399599999999996 1.2416 AML other m 2023-03-21T06:30:26.76
IV.ACER.HHN. ML:1.2 0.000074405955 1.8208 AML other m 2023-03-21T06:30:26.97
IV.ACER.HNN. ML:1.6 0.0002132598 0.7584 AML other m 2023-03-21T06:30:26.59
IV.ACER.HHE. ML:1.1 0.00007175000000000001 0.64 AML other m 2023-03-21T06:30:27.01
IX.PGN3.HNN.01 ML:1.6 0.00030958445 1.056 AML other m 2023-03-21T06:30:28.00
IV.ACER.HNE. ML:1.3 0.00009820314500000001 0.2176 AML other m 2023-03-21T06:30:29.28
IV.MRLC.HNE. ML:0.6 0.000021606174999999998 0.16 AML other m 2023-03-21T06:30:29.48
IV.MRLC.HHN. ML:0.8 0.00003001916 0.6208 AML other m 2023-03-21T06:30:30.62
IV.PTRP.HHN. ML:1.0 0.00003766771 0.4192 AML other m 2023-03-21T06:30:31.10
IV.MRLC.HNN. ML:0.9 0.000036544445000000005 1.0016 AML other m 2023-03-21T06:30:37.14
IV.PTRP.HHE. ML:0.9 0.000030199825 0.0192 AML other m 2023-03-21T06:30:41.23
IV.MCEL.HNE. ML:1.4 0.00007767376 0.3776 AML other m 2023-03-21T06:30:42.96
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