Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 23-02-2021 and time 04:36:25 (Italy) in region 2 km W Muro Lucano (PZ)

A magnitude ML 1.7 earthquake occured in region: 2 km W Muro Lucano (PZ), on

  • 23-02-2021 03:36:25 (UTC)
  • 23-02-2021 04:36:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.75, 15.46 at 8 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
Muro Lucano PZ 2 5497 5497
Castelgrande PZ 4 943 6440
Bella PZ 7 5171 11611
Ricigliano SA 10 1144 12755
San Fele PZ 10 3004 15759
Pescopagano PZ 11 1910 17669
Rapone PZ 11 990 18659
San Gregorio Magno SA 12 4286 22945
Balvano PZ 12 1830 24775
Sant'Andrea di Conza AV 13 1539 26314
Ruvo del Monte PZ 13 1083 27397
Santomenna SA 13 443 27840
Laviano SA 13 1438 29278
Castelnuovo di Conza SA 14 619 29897
Romagnano al Monte SA 14 368 30265
Baragiano PZ 14 2671 32936
Colliano SA 14 3638 36574
Buccino SA 16 5047 41621
Conza della Campania AV 16 1373 42994
Valva SA 16 1643 44637
Calitri AV 17 4666 49303
Palomonte SA 17 3985 53288
Vietri di Potenza PZ 17 2832 56120
Cairano AV 18 326 56446
Salvitelle SA 18 560 57006
Ruoti PZ 19 3579 60585
Picerno PZ 20 5985 66570
Oliveto Citra SA 20 3802 70372

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km W of Potenza (67122 inhabitants)
43 Km E of Battipaglia (50786 inhabitants)
59 Km E of Avellino (54857 inhabitants)
60 Km E of Salerno (135261 inhabitants)
64 Km E of Cava de' Tirreni (53659 inhabitants)
68 Km SW of Cerignola (58396 inhabitants)
71 Km SE of Benevento (60091 inhabitants)
79 Km E of Scafati (50787 inhabitants)
79 Km S of Foggia (151991 inhabitants)
83 Km E of Castellammare di Stabia (66466 inhabitants)
88 Km SW of Andria (100440 inhabitants)
92 Km E of Torre del Greco (86275 inhabitants)
93 Km W of Altamura (70396 inhabitants)
93 Km E of Portici (55274 inhabitants)
93 Km SW of Barletta (94814 inhabitants)
94 Km E of Ercolano (53709 inhabitants)
94 Km E of Acerra (59573 inhabitants)
97 Km W of Matera (60436 inhabitants)
99 Km E of Afragola (65057 inhabitants)
99 Km SW of Trani (56217 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 1.7 2021-02-23
03:36:25		 40.75 15.46 8 2021-02-23
03:45:44		 Sala Sismica INGV-Roma 87397331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-23 03:36:25 ± 0.07
Latitude 40.75 ± 0.00
Longitude 15.46 ± 0.00
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87397331

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 344
Semi-minor axis of confidence ellipse (meter) 245
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 141
Circular confidence region, given by single value of horizontal uncertainty (meter) 350
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 34
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 37
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
Epicentral distance of station farthest from the epicenter (degree) 0.51171
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 26
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 87397331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-23 03:45:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2021-02-23T03:37:23.97 3.0 undecidable manual Sn -9.99 0
IV.SRES.HHZ. 2021-02-23T03:36:59.05 3.0 undecidable manual Pn -7.38 0
IV.AMUR.HHZ. 2021-02-23T03:36:56.04 3.0 undecidable manual Sn -0.03 0
IV.MIGL.HHZ. 2021-02-23T03:36:40.66 3.0 negative manual Pg 0.38 0
IV.ACER.HHZ. 2021-02-23T03:36:39.34 0.3 undecidable manual S 85 0.3678 50 0.35 66
IV.MRVN.HHZ. 2021-02-23T03:36:38.80 3.0 negative manual Pg 0.91 0
IV.SIRI.HHZ. 2021-02-23T03:36:37.64 3.0 undecidable manual Pg -0.53 0
IV.MTMR.EHZ. 2021-02-23T03:36:36.61 3.0 undecidable manual Sn -2.48 0
IV.SNAL.HHZ. 2021-02-23T03:36:35.52 0.3 undecidable manual S 312 0.2563 106 0.22 69
IV.PTRP.HHZ. 2021-02-23T03:36:35.92 0.3 undecidable manual P 117 0.5117 50 0.37 64
IX.PST3.HHZ.02 2021-02-23T03:36:35.50 0.6 undecidable manual S 221 0.2518 106 0.35 45
IV.MCEL.HHZ. 2021-02-23T03:36:35.20 0.6 undecidable manual P 149 0.5009 50 -0.16 44
IV.CMPR.HHZ. 2021-02-23T03:36:34.12 0.6 positive manual P 195 0.4506 50 -0.38 43
IV.SGO.HHZ. 2021-02-23T03:36:34.57 0.3 undecidable manual S 211 0.2239 108 0.45 66
IV.VULT.HHZ. 2021-02-23T03:36:34.71 0.3 undecidable manual S 30 0.2338 108 0.22 69
IV.MCRV.HHZ. 2021-02-23T03:36:33.74 0.3 undecidable manual S 278 0.2221 109 -0.31 68
IV.SLCN.HHZ. 2021-02-23T03:36:33.65 0.6 undecidable manual P 160 0.3858 50 0.25 45
IV.PALZ.HHZ. 2021-02-23T03:36:33.49 0.3 negative manual P 63 0.4245 50 -0.57 61
IV.ACER.HHZ. 2021-02-23T03:36:32.85 0.1 negative manual P 85 0.3678 50 -0.24 90
IV.CAFE.HHZ. 2021-02-23T03:36:32.09 0.6 undecidable manual P 329 0.3229 50 -0.23 45
IX.STN3.HHZ.02 2021-02-23T03:36:31.66 0.6 undecidable manual P 147 0.2662 106 0.49 43
IV.CDRU.HHZ. 2021-02-23T03:36:31.06 0.1 undecidable manual P 204 0.2878 105 -0.58 83
IX.AVG3.HNN.01 2021-02-23T03:36:30.13 0.6 undecidable manual P 87 0.2014 110 0.33 45
IX.COL3.HHE.02 2021-02-23T03:36:30.79 0.3 undecidable manual S 236 0.1178 122 0.4 68
IV.VULT.HHZ. 2021-02-23T03:36:30.48 1.0 undecidable manual P 30 0.2338 108 -0.01 24
IX.VDP3.HNE.01 2021-02-23T03:36:30.06 0.6 undecidable manual P 150 0.1709 114 0.9 37
IV.SNAL.HHZ. 2021-02-23T03:36:30.71 0.3 negative manual P 312 0.2563 106 -0.25 69
IX.CGG3.HNZ.01 2021-02-23T03:36:30.25 0.3 undecidable manual P 167 0.2158 109 0.14 71
IX.AND3.HNE.02 2021-02-23T03:36:30.13 0.1 undecidable manual P 332 0.2005 110 0.34 91
IV.SGO.HHZ. 2021-02-23T03:36:30.02 0.3 undecidable manual P 211 0.2239 108 -0.26 69
IX.PST3.HHZ.02 2021-02-23T03:36:30.78 0.3 undecidable manual P 221 0.2518 106 -0.09 71
IX.CLT3.HHN.02 2021-02-23T03:36:29.19 0.1 undecidable manual P 345 0.1556 116 0.32 92
IV.CAGG.EHZ. 2021-02-23T03:36:29.91 0.3 undecidable manual P 169 0.1996 111 0.15 71
IX.SFL3.HNN.01 2021-02-23T03:36:29.70 0.6 undecidable manual S 68 0.0971 128 -0.04 49
IV.MCRV.HHZ. 2021-02-23T03:36:29.84 0.3 undecidable manual P 278 0.2221 109 -0.4 67
IX.CSG3.HNE.01 2021-02-23T03:36:29.04 0.3 undecidable manual S 3 0.0657 139 0.2 72
IX.COL3.HHE.02 2021-02-23T03:36:28.28 0.1 undecidable manual P 236 0.1178 122 0.16 96
IX.SCL3.HNE.02 2021-02-23T03:36:28.86 0.3 undecidable manual S 146 0.0701 137 -0.1 73
IV.MRLC.HNN. 2021-02-23T03:36:27.72 0.3 undecidable manual S 81 0.0225 163 -0.31 71
IX.CSG3.HNE.01 2021-02-23T03:36:27.15 0.1 undecidable manual P 3 0.0657 139 -0.08 98
IX.SFL3.HNN.01 2021-02-23T03:36:27.66 0.1 undecidable manual P 68 0.0971 128 -0.09 98
IX.SCL3.HNE.02 2021-02-23T03:36:26.79 0.1 undecidable manual P 146 0.0701 137 -0.51 90
IV.MRLC.HNN. 2021-02-23T03:36:26.51 0.1 undecidable manual P 81 0.0225 163 -0.25 96
IX.VDS3.HNZ.01 2021-02-23T03:36:26.82 0.1 undecidable manual P 244 0.027 160 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCRV.HHN. ML:2.1 0.000808 0.22 AML other m 2021-02-23T03:36:35.84
IV.MCRV.HHE. ML:1.9 0.0004895 0.24 AML other m 2021-02-23T03:36:35.84
IV.SGO.HHN. ML:1.8 0.0003525 0.16 AML other m 2021-02-23T03:36:36.11
IV.SGO.HHE. ML:1.5 0.000178 0.4 AML other m 2021-02-23T03:36:37.44
IV.CAFE.HNN. ML:1.8 0.000226 0.6 AML other m 2021-02-23T03:36:38.20
IV.CDRU.HHN. ML:1.4 0.000107 0.88 AML other m 2021-02-23T03:36:38.78
IV.CDRU.HHE. ML:1.8 0.000264 0.1 AML other m 2021-02-23T03:36:38.32
IV.ACER.HHN. ML:1.9 0.000255 0.4 AML other m 2021-02-23T03:36:39.81
IV.ACER.HHE. ML:2 0.0003345 1.44 AML other m 2021-02-23T03:36:40.10
IV.ACER.HNE. ML:1.9 0.0002895 1.44 AML other m 2021-02-23T03:36:40.10
IV.SNAL.HHE. ML:1.6 0.00023 0.72 AML other m 2021-02-23T03:36:40.13
IV.SNAL.HNE. ML:1.6 0.0001965 0.72 AML other m 2021-02-23T03:36:40.14
IV.ACER.HNN. ML:2 0.000315 0.46 AML other m 2021-02-23T03:36:40.62
IV.VULT.HNE. ML:1.8 0.000334 1.6 AML other m 2021-02-23T03:36:42.09
IV.CAFE.HHN. ML:1.4 0.00010825 1 AML other m 2021-02-23T03:36:42.18
IV.CAFE.HHE. ML:1.6 0.000172 0.62 AML other m 2021-02-23T03:36:42.52
IV.VULT.HHN. ML:1.9 0.0004265 0.38 AML other m 2021-02-23T03:36:42.97
IV.VULT.HNN. ML:1.9 0.0004775 1.5 AML other m 2021-02-23T03:36:43.97
IV.VULT.HHE. ML:1.7 0.0002835 1 AML other m 2021-02-23T03:36:43.54
IX.STN3.HHE.02 ML:3.2 0.00737 0.64 AML other m 2021-02-23T03:36:43.94
IV.CAFE.HNE. ML:1.8 0.0002335 0.42 AML other m 2021-02-23T03:36:44.03
IV.SLCN.HHE. ML:1.7 0.0001715 1.56 AML other m 2021-02-23T03:36:45.07
IV.CMPR.HHN. ML:1.3 4.88E-5 0.5 AML other m 2021-02-23T03:36:45.52
IV.SNAL.HHN. ML:1.7 0.0002415 1 AML other m 2021-02-23T03:36:45.52
IV.SNAL.HNN. ML:1.7 0.000238 1 AML other m 2021-02-23T03:36:45.53
IX.STN3.HHN.02 ML:3.2 0.00717 0.42 AML other m 2021-02-23T03:36:46.16
IV.SLCN.HHN. ML:1.6 0.0001265 0.32 AML other m 2021-02-23T03:36:46.75
IV.CMPR.HHE. ML:1.4 6.43E-5 0.32 AML other m 2021-02-23T03:36:49.70
IV.MRVN.HHE. ML:1.5 5.555E-5 0.24 AML other m 2021-02-23T03:36:51.09
IV.MCEL.HHN. ML:1.4 6.68E-5 0.86 AML other m 2021-02-23T03:36:51.66
IV.MRVN.HHN. ML:1.5 4.94E-5 0.44 AML other m 2021-02-23T03:36:51.09
IV.SIRI.HNN. ML:2.1 0.0001895 0.42 AML other m 2021-02-23T03:36:53.60
IV.SIRI.HNE. ML:2.2 0.0002265 0.56 AML other m 2021-02-23T03:36:53.71
IV.PTRP.HHN. ML:1.3 4.73E-5 0.6 AML other m 2021-02-23T03:36:53.82
IV.MCEL.HHE. ML:1.3 4.34E-5 0.76 AML other m 2021-02-23T03:36:56.11
IV.SIRI.HHE. ML:1.5 4.935E-5 0.46 AML other m 2021-02-23T03:36:57.34
IV.SIRI.HHN. ML:1.4 4.17E-5 1.7 AML other m 2021-02-23T03:36:57.96
IV.PTRP.HHE. ML:1.3 4.45E-5 0.7 AML other m 2021-02-23T03:36:58.31
IV.AMUR.HHN. ML:1.5 3.68E-5 1.2 AML other m 2021-02-23T03:37:01.26
IV.AMUR.HHE. ML:1.4 2.71E-5 0.7 AML other m 2021-02-23T03:37:07.37
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