Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 04-09-2023 and time 20:44:44 (Italy) in region 8 km SW Morano Calabro (CS)

A magnitude ML 2.1 earthquake occured in region: 8 km SW Morano Calabro (CS), on

  • 04-09-2023 18:44:44 (UTC)
  • 04-09-2023 20:44:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.8040, 16.0580 at 7 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
Morano Calabro CS 8 4576 4576
Lungro CS 9 2592 7168
Saracena CS 9 3828 10996
San Basile CS 9 1055 12051
Acquaformosa CS 9 1106 13157
San Donato di Ninea CS 10 1360 14517
Mormanno CS 11 3027 17544
Castrovillari CS 12 22240 39784
Orsomarso CS 13 1265 41049
Altomonte CS 13 4488 45537
Verbicaro CS 14 3056 48593
Firmo CS 14 2115 50708
Papasidero CS 15 734 51442
San Sosti CS 16 2185 53627
Laino Castello CS 16 848 54475
Rotonda PZ 17 3494 57969
Mottafollone CS 17 1236 59205
Santa Domenica Talao CS 17 1263 60468
Frascineto CS 18 2154 62622
Laino Borgo CS 18 1921 64543
Viggianello PZ 19 3025 67568
Grisolia CS 19 2249 69817
Buonvicino CS 20 2247 72064
Santa Maria del Cedro CS 20 4954 77018

Municipalities with at least 50000 inhabitants

An earthquake occurred to
59 Km N of Cosenza (67546 inhabitants)
95 Km N of Lamezia Terme (70714 inhabitants)
96 Km S of Potenza (67122 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 2.1 2023-09-04
18:44:44		 39.8037 16.0582 7 2023-09-04
18:50:04		 Sala Sismica INGV-Roma 120754961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-04 18:44:44 ± 0.14
Latitude 39.8037 ± 0.0081
Longitude 16.0582 ± 0.0105
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 120754961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 808
Semi-minor axis of confidence ellipse (meter) 757
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 92
Circular confidence region, given by single value of horizontal uncertainty (meter) 810.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.43
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.40559
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 10
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 120754961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-04 18:50:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IX.COL3.HHZ.02 2023-09-04T18:45:20.20 3.0 undecidable manual S 0.06 0
IV.SIRI.HHZ. 2023-09-04T18:45:00.97 0.3 undecidable manual S 339 45.0216 50 1.2 49
IV.SCHR.EHZ. 2023-09-04T18:44:59.61 0.3 undecidable manual S 2 43.9227 50 0.13 72
IV.CELI.HHZ. 2023-09-04T18:44:56.48 3.0 undecidable manual P 1.05 0
IV.SPS2.HHZ. 2023-09-04T18:44:56.47 3.0 negative manual P 0.51 0
IV.TDS.HHZ. 2023-09-04T18:44:55.48 0.3 undecidable manual S 124 28.6491 104 0.76 61
IV.MCEL.HHZ. 2023-09-04T18:44:55.31 3.0 positive manual P -0.13 0
IV.CET2.HHZ. 2023-09-04T18:44:55.52 0.3 undecidable manual S 196 31.746 103 -0.23 72
IV.MGR.HHZ. 2023-09-04T18:44:54.73 3.0 undecidable manual P 0.01 0
IV.SIRI.HHZ. 2023-09-04T18:44:52.99 0.1 undecidable manual P 339 45.0216 50 -0.31 92
IV.SCHR.EHZ. 2023-09-04T18:44:52.69 0.1 undecidable manual P 2 43.9227 50 -0.44 90
IV.GRIS.EHZ. 2023-09-04T18:44:51.50 0.3 undecidable manual S 248 18.87 111 0.05 76
IV.TDS.HHZ. 2023-09-04T18:44:50.33 0.1 undecidable manual P 124 28.6491 104 -0.05 100
IV.CET2.HHZ. 2023-09-04T18:44:50.93 0.1 positive manual P 196 31.746 103 -0.05 100
MN.CUC.HHZ. 2023-09-04T18:44:49.93 0.1 undecidable manual P 316 29.5482 104 -0.61 87
IV.SALB.HHZ. 2023-09-04T18:44:49.48 0.1 positive manual P 71 25.8519 106 -0.35 94
XE.T0702.HHZ. 2023-09-04T18:44:49.29 0.3 undecidable manual S 100
XE.MORMA.HHZ. 2023-09-04T18:44:49.12 0.3 undecidable manual S 315 10.3785 125 0.27 74
IV.GRIS.EHZ. 2023-09-04T18:44:48.70 0.1 positive manual P 248 18.87 111 0.21 98
XE.T0701.HHZ. 2023-09-04T18:44:48.49 0.1 positive manual P -0.07 1.55
XE.T0702.HHZ. 2023-09-04T18:44:47.48 0.1 undecidable manual P 100
XE.MORMA.HHZ. 2023-09-04T18:44:47.20 0.1 positive manual P 315 10.3785 125 0.21 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
XE.MORMA.HNN. ML:2.2 0.00215 0.9 AML other m 2023-09-04T18:44:49.45
XE.MORMA.HHN. ML:2.2 0.00239 0.2 AML other m 2023-09-04T18:44:49.46
XE.MORMA.HHE. ML:2.4 0.0038949999999999996 0.2 AML other m 2023-09-04T18:44:49.46
XE.MORMA.HNE. ML:2.5 0.00417 0.2 AML other m 2023-09-04T18:44:49.46
XE.T0701.HHN. ML:2.4 0.002115 0.24 AML other m 2023-09-04T18:44:54.49
XE.T0701.HNN. ML:2.1 0.000954 0.24 AML other m 2023-09-04T18:44:54.49
XE.T0701.HHE. ML:2.5 0.0023499999999999997 0.4 AML other m 2023-09-04T18:44:54.68
XE.T0701.HNE. ML:2.2 0.001265 0.42 AML other m 2023-09-04T18:44:54.69
IV.GRIS.EHN. ML:1.8 0.0005005000000000001 0.46 AML other m 2023-09-04T18:44:54.63
IV.SALB.HNN. ML:1.9 0.00045650000000000004 1.48 AML other m 2023-09-04T18:44:54.98
IV.SALB.HHN. ML:1.9 0.000498 0.7 AML other m 2023-09-04T18:44:55.53
IV.CET2.HHN. ML:2.5 0.0014249999999999998 1.64 AML other m 2023-09-04T18:44:55.95
IV.CET2.HHE. ML:2.5 0.001441 0.56 AML other m 2023-09-04T18:44:55.71
IV.SALB.HHE. ML:2.1 0.0008065 1.04 AML other m 2023-09-04T18:44:56.03
IV.SALB.HNE. ML:2.1 0.0007865 1.04 AML other m 2023-09-04T18:44:56.03
IV.TDS.HHN. ML:1.3 0.00011549999999999999 0.82 AML other m 2023-09-04T18:44:56.21
MN.CUC.HHN. ML:2.0 0.000491 1.54 AML other m 2023-09-04T18:44:57.17
MN.CUC.HNN. ML:2.0 0.00046899999999999996 1.56 AML other m 2023-09-04T18:44:57.95
IV.GRIS.EHE. ML:1.7 0.000461 1.46 AML other m 2023-09-04T18:44:57.23
IV.TDS.HHE. ML:1.3 0.0001119 0.28 AML other m 2023-09-04T18:44:57.36
IV.SCHR.EHN. ML:1.9 0.00026900000000000003 1.38 AML other m 2023-09-04T18:45:00.86
MN.CUC.HHE. ML:1.9 0.0004365 0.44 AML other m 2023-09-04T18:45:00.41
MN.CUC.HNE. ML:1.9 0.0004335 0.44 AML other m 2023-09-04T18:45:00.41
IV.SIRI.HHN. ML:2.2 0.00042400000000000006 1.68 AML other m 2023-09-04T18:45:03.07
IV.SIRI.HNN. ML:2.1 0.00040050000000000003 1.68 AML other m 2023-09-04T18:45:03.07
IV.SIRI.HHE. ML:2.1 0.00040800000000000005 1.06 AML other m 2023-09-04T18:45:03.45
IV.SIRI.HNE. ML:2.1 0.000393 1.06 AML other m 2023-09-04T18:45:03.98
IV.SCHR.EHE. ML:1.9 0.00026250000000000004 0.46 AML other m 2023-09-04T18:45:03.63
IV.SPS2.HHN. ML:1.4 0.0000526 0.28 AML other m 2023-09-04T18:45:05.16
IV.MCEL.HNE. ML:2.3 0.000422 0.54 AML other m 2023-09-04T18:45:06.48
IV.MCEL.HNN. ML:2.2 0.00028900000000000003 1.3 AML other m 2023-09-04T18:45:06.83
IV.MGR.HHE. ML:1.9 0.00019250000000000002 0.46 AML other m 2023-09-04T18:45:07.31
IV.MGR.HHN. ML:2.0 0.00021150000000000002 0.24 AML other m 2023-09-04T18:45:07.22
IV.MCEL.HHE. ML:1.8 0.000132 0.84 AML other m 2023-09-04T18:45:07.87
IV.SPS2.HHE. ML:1.4 0.0000493 0.26 AML other m 2023-09-04T18:45:09.30
IV.MCEL.HHN. ML:1.8 0.0001305 1.04 AML other m 2023-09-04T18:45:12.32
IV.MGR.HNE. ML:2.6 0.0010055 1.3 AML other m 2023-09-04T18:45:17.91
IV.MGR.HNN. ML:2.6 0.0009535 1.32 AML other m 2023-09-04T18:45:17.92
IX.COL3.HHN.02 ML:2.1 0.00008855 0.42 AML other m 2023-09-04T18:45:31.60
IX.COL3.HHE.02 ML:2.0 0.00007685 0.9 AML other m 2023-09-04T18:45:32.86
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
Waveforms Seismic signals in miniseed + resp format Download