Earthquake with magnitude of ML 1.1 on date 20-09-2023 and time 04:30:21 (UTC) in region 3 km W Rotonda (PZ)

A magnitude ML 1.1 earthquake occured in region: 3 km W Rotonda (PZ), on

  • 20-09-2023 04:30:21 (UTC)
  • 20-09-2023 06:30:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.9510, 16.0060 at 10 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
Rotonda PZ 3 3494 3494
Laino Borgo CS 3 1921 5415
Laino Castello CS 3 848 6263
Castelluccio Inferiore PZ 7 2131 8394
Mormanno CS 7 3027 11421
Castelluccio Superiore PZ 7 824 12245
Viggianello PZ 8 3025 15270
Papasidero CS 12 734 16004
San Severino Lucano PZ 14 1563 17567
Latronico PZ 15 4556 22123
Aieta CS 16 823 22946
Episcopia PZ 16 1434 24380
Morano Calabro CS 16 4576 28956
Lauria PZ 18 12919 41875
Orsomarso CS 19 1265 43140
Santa Domenica Talao CS 19 1263 44403

Municipalities with at least 50000 inhabitants

An earthquake occurred to
76 Km N of Cosenza (67546 inhabitants)
79 Km S of Potenza (67122 inhabitants)
94 Km SW of Matera (60436 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
Reviewed
Rev100
ML 1.1 2023-09-20
04:30:21
39.9507 16.0058 10 2023-09-20
04:41:33
Sala Sismica INGV-Roma 121259891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-20 04:30:21 ± 0.12
Latitude 39.9507 ± 0.0054
Longitude 16.0058 ± 0.0047
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121259891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 492
Semi-minor axis of confidence ellipse (meter) 410
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 38
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.25451
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 121259891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-20 04:41:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIPA.HHZ. 2023-09-20T04:30:43.30 3.0 undecidable manual S -0.13 0
IV.SPS2.HHZ. 2023-09-20T04:30:42.36 3.0 undecidable manual S 0.24 0
IV.ACER.HHZ. 2023-09-20T04:30:36.78 3.0 positive manual P 0.67 0
MN.CUC.HHZ. 2023-09-20T04:30:27.95 0.6 undecidable manual S 287 16.872 120 0.09 49
XE.T0701.HHZ. 2023-09-20T04:30:26.18 0.6 undecidable manual S 67 10.1787 134 0.2 48
XE.T0702.HHZ. 2023-09-20T04:30:26.69 1.0 negative manual P 165 26.3514 110 -0.03 24
IV.SIRI.HNE. 2023-09-20T04:30:26.87 0.6 undecidable manual P 335 28.2495 50 -0.17 47
MN.CUC.HHZ. 2023-09-20T04:30:25.16 0.6 undecidable manual P 287 16.872 120 0.16 48
XE.MORMA.HHZ. 2023-09-20T04:30:25.80 0.6 undecidable manual S 198 9.3795 136 0.01 50
XE.CNESE.HHE. 2023-09-20T04:30:25.59 0.1 undecidable manual S 133 9.1797 137 -0.14 97
XE.CNESE.HHE. 2023-09-20T04:30:23.91 0.1 undecidable manual P 133 9.1797 137 0.14 97
IV.MMN.HHN. 2023-09-20T04:30:23.44 0.1 undecidable manual P 191 6.7932 145 -0.03 100
XE.T0701.HHZ. 2023-09-20T04:30:23.95 0.6 positive manual P 67 10.1787 134 0.03 50
XE.MORMA.HHZ. 2023-09-20T04:30:23.98 0.1 positive manual P 198 9.3795 136 0.17 97
XE.LAICA.HNE. 2023-09-20T04:30:22.83 0.1 undecidable manual P 265 2.5974 165 -0.29 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
XE.MORMA.HHN. ML:0.8 0.0000948 0.12 AML other m 2023-09-20T04:30:26.23
XE.MORMA.HHE. ML:1.2 0.00021999999999999998 0.16 AML other m 2023-09-20T04:30:26.16
XE.T0701.HHN. ML:1.0 0.000122 0.14 AML other m 2023-09-20T04:30:26.27
XE.T0701.HHE. ML:1.0 0.00011665 0.14 AML other m 2023-09-20T04:30:26.33
MN.CUC.HHN. ML:0.6 0.00003585 0.6 AML other m 2023-09-20T04:30:29.62
MN.CUC.HHE. ML:0.8 0.000051500000000000005 1 AML other m 2023-09-20T04:30:30.57
IV.SPS2.HHN. ML:1.2 0.000017849999999999997 0.84 AML other m 2023-09-20T04:30:54.65
IV.SPS2.HHE. ML:1.2 0.00002145 0.44 AML other m 2023-09-20T04:30:55.76
IV.PIPA.HHE. ML:1.6 0.0000435 0.42 AML other m 2023-09-20T04:30:56.55
IV.PIPA.HHN. ML:1.4 0.0000324 1.42 AML other m 2023-09-20T04:30:57.20
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