Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 16-01-2021 and time 18:51:52 (Italy) in region 3 km SW Francavilla in Sinni (PZ)

A magnitude ML 1.8 earthquake occured in region: 3 km SW Francavilla in Sinni (PZ), on

  • 16-01-2021 17:51:52 (UTC)
  • 16-01-2021 18:51:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.0690, 16.1750 at 22 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
Francavilla in Sinni PZ 3 4215 4215
Fardella PZ 5 627 4842
San Severino Lucano PZ 6 1563 6405
Episcopia PZ 7 1434 7839
Teana PZ 7 613 8452
Chiaromonte PZ 7 1965 10417
Calvera PZ 9 387 10804
Carbone PZ 11 638 11442
San Costantino Albanese PZ 12 729 12171
Viggianello PZ 13 3025 15196
Senise PZ 13 7115 22311
Noepoli PZ 13 878 23189
Castronuovo di Sant'Andrea PZ 14 1067 24256
Latronico PZ 14 4556 28812
San Paolo Albanese PZ 14 294 29106
Terranova di Pollino PZ 15 1208 30314
Cersosimo PZ 15 656 30970
San Chirico Raparo PZ 16 1084 32054
Roccanova PZ 17 1543 33597
Rotonda PZ 17 3494 37091
Castelluccio Superiore PZ 18 824 37915
Castelluccio Inferiore PZ 19 2131 40046
Castelsaraceno PZ 19 1384 41430
San Giorgio Lucano MT 19 1217 42647

Municipalities with at least 50000 inhabitants

An earthquake occurred to
71 Km SE of Potenza (67122 inhabitants)
76 Km SW of Matera (60436 inhabitants)
86 Km N of Cosenza (67546 inhabitants)
90 Km SW of Altamura (70396 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 1.8 2021-01-16
17:51:52		 40.0687 16.1747 23 2021-07-12
16:54:58		 Bollettino Sismico Italiano INGV 86976481
Reviewed
Rev100 		ML 1.8 2021-01-16
17:51:52		 40.0768 16.2012 25 2021-01-16
19:26:53		 Sala Sismica INGV-Roma 86308371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-16 17:51:52 ± 0.14
Latitude 40.0687 ± 0.0063
Longitude 16.1747 ± 0.0082
Depth (km) 23 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86976481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 669
Semi-minor axis of confidence ellipse (meter) 174
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 37
Circular confidence region, given by single value of horizontal uncertainty (meter) 670.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
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) 0.21134
Epicentral distance of station farthest from the epicenter (degree) 0.71316
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 86308371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-16 19:26:53

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 86976481
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-04 13:19:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GE.MATE.HHN. 2021-01-16T17:52:16.72 0.6 undecidable manual S 35 78.4659 100 0.39 42
IV.CET2.HHZ. 2021-01-16T17:52:12.94 0.6 undecidable manual S 197 62.7927 103 0.71 40
IV.PTRP.HHE. 2021-01-16T17:52:09.64 0.6 undecidable manual S 349 51.1155 106 0.42 43
IV.MGR.HHZ. 2021-01-16T17:52:09.56 0.6 undecidable manual S 278 53.2023 106 -0.21 46
IV.GRIS.EHE. 2021-01-16T17:52:08.40 0.6 undecidable manual S 217 45.5211 109 0.6 42
IV.TDS.HHE. 2021-01-16T17:52:08.95 1.0 undecidable manual S 163 47.4192 108 0.68 21
IV.MCEL.HHZ. 2021-01-16T17:52:07.18 0.3 undecidable manual S 312 42.5241 110 0.15 70
IV.CRAC.EHE. 2021-01-16T17:52:07.28 0.6 undecidable manual S 32 41.1255 111 0.6 42
GE.MATE.HHN. 2021-01-16T17:52:07.54 0.3 undecidable manual P 35 78.4659 100 1.21 45
IV.CELI.HHE. 2021-01-16T17:52:06.59 0.6 undecidable manual P 159 79.1652 100 0.14 45
MN.CUC.HHE. 2021-01-16T17:52:04.33 0.3 undecidable manual S 255 31.6461 118 -0.05 74
IV.CET2.HHZ. 2021-01-16T17:52:04.21 0.1 undecidable manual P 197 62.7927 103 0.25 90
IV.SIRI.HHZ. 2021-01-16T17:52:03.46 0.6 undecidable manual S 296 28.9488 121 -0.29 47
IV.SLCN.HHE. 2021-01-16T17:52:03.28 0.3 undecidable manual P 308 58.0974 104 0.01 71
IV.MMN.HHE. 2021-01-16T17:52:03.00 0.6 undecidable manual S 219 25.1526 125 0.09 49
IV.SALB.HHZ. 2021-01-16T17:52:02.37 0.3 undecidable manual S 146 25.752 124 -0.67 63
IV.ORI.HHZ. 2021-01-16T17:52:02.75 0.6 undecidable manual S 95 23.4543 127 0.2 48
IV.PTRP.HHE. 2021-01-16T17:52:02.00 0.1 undecidable manual P 349 51.1155 106 -0.23 92
IV.MGR.HHZ. 2021-01-16T17:52:02.25 0.3 undecidable manual P 278 53.2023 106 -0.29 68
IV.GRIS.EHE. 2021-01-16T17:52:01.96 0.3 undecidable manual P 217 45.5211 109 0.55 65
IV.TDS.HHE. 2021-01-16T17:52:01.36 0.3 undecidable manual P 163 47.4192 108 -0.32 67
IV.MCEL.HHZ. 2021-01-16T17:52:00.58 0.1 undecidable manual P 312 42.5241 110 -0.39 90
IV.CRAC.EHE. 2021-01-16T17:52:00.48 0.3 undecidable manual P 32 41.1255 111 -0.28 69
MN.CUC.HHE. 2021-01-16T17:51:59.39 0.1 undecidable manual P 255 31.6461 118 -0.04 99
IV.SALB.HHZ. 2021-01-16T17:51:58.00 0.1 undecidable manual P 146 25.752 124 -0.66 84
IV.MMN.HHE. 2021-01-16T17:51:58.83 0.3 undecidable manual P 219 25.1526 125 0.24 72
IV.SIRI.HHZ. 2021-01-16T17:51:58.60 0.1 undecidable manual P 296 28.9488 121 -0.47 91
IV.ORI.HHZ. 2021-01-16T17:51:58.34 0.1 undecidable manual P 95 23.4543 127 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SALB.HHN. ML:1.7 0.0002261826 1.8976 AML other m 2021-01-16T17:52:03.05
IV.SALB.HHE. ML:1.8 0.0002965 0.12 AML other m 2021-01-16T17:52:03.37
IV.ORI.HHE. ML:2.0 0.0004345 1.52 AML other m 2021-01-16T17:52:05.05
IV.SIRI.HHE. ML:1.6 0.00017497625 1.8208 AML other m 2021-01-16T17:52:06.06
IV.SIRI.HNN. ML:1.6 0.0001665558 0.2176 AML other m 2021-01-16T17:52:06.17
IV.SIRI.HHN. ML:1.6 0.0001703663 0.2176 AML other m 2021-01-16T17:52:06.17
IV.SIRI.HNE. ML:1.6 0.00016580205 1.8336 AML other m 2021-01-16T17:52:06.06
IV.ORI.HHN. ML:1.9 0.00037 0.34 AML other m 2021-01-16T17:52:07.52
IV.MCEL.HHN. ML:2.0 0.000266 0.34 AML other m 2021-01-16T17:52:07.44
IV.MCEL.HNN. ML:2.5 0.0008935 0.62 AML other m 2021-01-16T17:52:08.03
IV.MCEL.HHE. ML:1.8 0.0001955 0.16 AML other m 2021-01-16T17:52:08.29
IV.MCEL.HNE. ML:2.2 0.00045650000000000004 0.28 AML other m 2021-01-16T17:52:08.93
IV.CET2.HHE. ML:1.6 0.00006625302500000001 0.2176 AML other m 2021-01-16T17:52:13.10
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