Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 20-09-2021 and time 16:07:06 (Italy) in region Costa Calabra nord occidentale (Cosenza)

A magnitude ML 1.5 earthquake occured in region: Costa Calabra nord occidentale (Cosenza), on

  • 20-09-2021 14:07:06 (UTC)
  • 20-09-2021 16:07:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.1190, 15.9440 at 48 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
Amantea CS 12 13975 13975
Belmonte Calabro CS 13 2003 15978
San Pietro in Amantea CS 15 505 16483
Longobardi CS 15 2312 18795
Serra d'Aiello CS 16 458 19253
Fiumefreddo Bruzio CS 17 2994 22247
Lago CS 19 2624 24871
Cleto CS 19 1301 26172
Aiello Calabro CS 19 1729 27901

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km SW of Cosenza (67546 inhabitants)
36 Km W of Lamezia Terme (70714 inhabitants)
61 Km W of Catanzaro (90612 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 1.5 2021-09-20
14:07:06		 39.1188 15.9443 49 2022-03-30
13:04:30		 Bollettino Sismico Italiano INGV 99742351
Reviewed
Rev100 		ML 1.6 2021-09-20
14:07:06		 39.1242 15.9358 50 2021-09-20
14:21:04		 Sala Sismica INGV-Roma 95666581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-20 14:07:06 ± 0.09
Latitude 39.1188 ± 0.0045
Longitude 15.9443 ± 0.0070
Depth (km) 49 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99742351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 605
Semi-minor axis of confidence ellipse (meter) 346
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 270
Circular confidence region, given by single value of horizontal uncertainty (meter) 610.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.24641
Epicentral distance of station farthest from the epicenter (degree) 1.06210
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 99742351
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-13 13:02:48

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 95666581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-20 14:21:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MGR.HHZ. 2021-09-20T14:07:39.63 0.3 undecidable manual S 344 117.8931 98 0.28 60
IV.MSRU.HHE. 2021-09-20T14:07:35.86 0.6 undecidable manual S 202 102.12 100 -0.14 43
IV.PLAC.HHZ. 2021-09-20T14:07:32.57 0.3 undecidable manual S 150 85.6476 104 0.04 67
MN.TIP.HHZ. 2021-09-20T14:07:29.46 0.3 undecidable manual S 84 70.374 109 0.1 69
IV.GRIS.EHZ. 2021-09-20T14:07:28.81 0.6 undecidable manual S 354 69.375 109 -0.36 43
IV.CELI.HHZ. 2021-09-20T14:07:27.14 0.3 undecidable manual S 57 57.7977 116 0.28 68
IV.SELL.HHE. 2021-09-20T14:07:27.88 0.3 undecidable manual S 104 60.7947 114 0.44 65
IV.SERS.HHZ. 2021-09-20T14:07:27.84 0.3 undecidable manual S 98 64.7907 112 -0.39 64
IV.JOPP.HHZ. 2021-09-20T14:07:26.81 0.3 undecidable manual S 185 56.9985 116 0.1 69
IV.MGR.HHZ. 2021-09-20T14:07:25.75 0.6 undecidable manual P 344 117.8931 98 0.26 40
IV.CET2.HHZ. 2021-09-20T14:07:24.12 0.3 undecidable manual S 1 45.5211 125 -0.44 66
IV.MSRU.HHE. 2021-09-20T14:07:23.77 1.0 undecidable manual P 202 102.12 100 0.22 21
IV.CAR1.HHZ. 2021-09-20T14:07:22.00 0.3 undecidable manual S 57 27.3504 143 0.27 72
IV.PLAC.HHZ. 2021-09-20T14:07:21.63 0.3 undecidable manual P 150 85.6476 104 0.08 66
MN.TIP.HHZ. 2021-09-20T14:07:19.33 0.1 undecidable manual P 84 70.374 109 -0.39 85
IV.GRIS.EHZ. 2021-09-20T14:07:19.57 0.6 undecidable manual P 354 69.375 109 -0.04 46
IV.SELL.HHE. 2021-09-20T14:07:18.71 0.1 undecidable manual P 104 60.7947 114 0.1 92
IV.SERS.HHZ. 2021-09-20T14:07:18.90 0.1 undecidable manual P 98 64.7907 112 -0.17 91
IV.JOPP.HHZ. 2021-09-20T14:07:18.01 0.3 undecidable manual P 185 56.9985 116 -0.17 69
IV.CELI.HHZ. 2021-09-20T14:07:18.21 0.3 undecidable manual P 57 57.7977 116 -0.06 70
IV.CET2.HHZ. 2021-09-20T14:07:17.17 0.1 undecidable manual P 1 45.5211 125 0.23 93
IV.GRI.EHN. 2021-09-20T14:07:17.44 1.0 undecidable manual P 129 52.6029 119 -0.26 23
IV.CAR1.HHZ. 2021-09-20T14:07:15.35 0.1 undecidable manual P 57 27.3504 143 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAR1.HNE. ML:2.2 0.00036313665 0.2752 AML other m 2021-09-20T14:07:22.52
IV.CAR1.HNN. ML:1.9 0.00019735289999999999 0.2496 AML other m 2021-09-20T14:07:23.52
IV.CAR1.HHE. ML:1.8 0.0001384987 0.2176 AML other m 2021-09-20T14:07:23.54
IV.CAR1.HHN. ML:2.1 0.00026489975 0.2368 AML other m 2021-09-20T14:07:23.52
IV.CET2.HHN. ML:1.8 0.00012191168999999999 0.16 AML other m 2021-09-20T14:07:25.73
IV.CET2.HHE. ML:1.5 0.00005554991 0.064 AML other m 2021-09-20T14:07:26.26
IV.CELI.HHE. ML:1.4 0.00003831086 0.2368 AML other m 2021-09-20T14:07:27.74
IV.CELI.HHN. ML:1.4 0.00003500055 0.2624 AML other m 2021-09-20T14:07:27.55
IV.JOPP.HHE. ML:1.3 0.0000312 1 AML other m 2021-09-20T14:07:28.58
IV.JOPP.HHN. ML:1.6 0.0000656 0.22 AML other m 2021-09-20T14:07:28.66
IV.SERS.HHN. ML:1.3 0.0000259973655 0.384 AML other m 2021-09-20T14:07:29.46
IV.GRIS.EHE. ML:1.3 0.000024881424999999997 0.2176 AML other m 2021-09-20T14:07:30.12
IV.GRIS.EHN. ML:1.3 0.00002287988 0.16 AML other m 2021-09-20T14:07:33.26
IV.SERS.HHE. ML:1.2 0.00001940124 0.3968 AML other m 2021-09-20T14:07:33.30
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