Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 11-09-2021 and time 06:55:58 (UTC) in region Costa Calabra nord occidentale (Cosenza)

A magnitude ML 1.8 earthquake occured in region: Costa Calabra nord occidentale (Cosenza), on

  • 11-09-2021 06:55:58 (UTC)
  • 11-09-2021 08:55:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.4550, 15.9790 at 58 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
Guardia Piemontese CS 2 1911 1911
Acquappesa CS 5 1907 3818
Fuscaldo CS 6 8140 11958
Cetraro CS 8 10128 22086
Rota Greca CS 12 1156 23242
San Martino di Finita CS 12 1100 24342
Paola CS 12 16013 40355
San Benedetto Ullano CS 13 1555 41910
Cerzeto CS 13 1373 43283
Lattarico CS 14 4013 47296
Fagnano Castello CS 14 3885 51181
Mongrassano CS 14 1607 52788
Torano Castello CS 15 4614 57402
Bonifati CS 16 2858 60260
Cervicati CS 16 829 61089
Montalto Uffugo CS 16 19669 80758
San Marco Argentano CS 17 7424 88182
Santa Caterina Albanese CS 17 1222 89404
San Lucido CS 17 6047 95451
Sangineto CS 18 1338 96789
Malvito CS 18 1795 98584
San Vincenzo La Costa CS 18 2195 100779
Sant'Agata di Esaro CS 19 1890 102669
San Fili CS 19 2719 105388

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of Cosenza (67546 inhabitants)
61 Km NW of Lamezia Terme (70714 inhabitants)
81 Km NW 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 1.8 2021-09-11
06:55:58		 39.4553 15.9793 58 2022-03-30
13:04:11		 Bollettino Sismico Italiano INGV 96546331
Reviewed
Rev100 		ML 1.9 2021-09-11
06:55:57		 39.3333 15.857 60 2021-09-11
07:05:46		 Sala Sismica INGV-Roma 95292391
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-11 06:55:58 ± 0.18
Latitude 39.4553 ± 0.0099
Longitude 15.9793 ± 0.0186
Depth (km) 58 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96546331

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1554
Semi-minor axis of confidence ellipse (meter) 700
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 62
Circular confidence region, given by single value of horizontal uncertainty (meter) 1550.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.24556
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 95292391
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-11 07:05:46

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 96546331
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-07 15:00:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2021-09-11T06:57:54.25 3.0 undecidable manual Sg 11.42 0
IV.MIDA.HHZ. 2021-09-11T06:57:19.33 3.0 undecidable manual Sg 11.34 0
IV.RIBO.EHZ.01 2021-09-11T06:57:14.05 3.0 positive manual Pn 0.86 0
IV.CSNT.HHZ. 2021-09-11T06:57:14.25 3.0 positive manual Pn -2.11 0
IV.OFFI.HHZ. 2021-09-11T06:57:04.54 3.0 undecidable manual Pg 8.44 0
IV.MDAR.HNZ. 2021-09-11T06:57:04.25 3.0 undecidable manual Pn 2.36 0
HL.VLS.HHZ. 2021-09-11T06:57:02.79 3.0 undecidable manual Pg 7.38 0
IV.RMP.HHZ. 2021-09-11T06:56:53.06 3.0 undecidable manual Pn 2.83 0
IT.LRNO.HNZ. 2021-09-11T06:56:45.68 3.0 undecidable manual Pg 8.85 0
IV.AMUR.HHZ. 2021-09-11T06:56:41.42 3.0 undecidable manual Sn -0.71 0
IX.SNR3.EHZ.02 2021-09-11T06:56:38.06 3.0 undecidable manual Sn -2.31 0
IV.MTSN.HNN. 2021-09-11T06:56:26.80 0.6 undecidable manual S 348 92.0412 111 -0.03 45
IV.MGR.HHZ. 2021-09-11T06:56:25.24 0.3 undecidable manual S 335 83.9493 113 0.03 68
IV.SIRI.HHZ. 2021-09-11T06:56:24.22 0.6 undecidable manual S 353 81.1521 114 -0.45 42
IV.MSRU.HHE. 2021-09-11T06:56:20.67 0.3 undecidable manual P 197 138.2616 102 0.1 61
IV.PLAC.HHE. 2021-09-11T06:56:19.21 0.3 undecidable manual P 160 118.3926 105 1.05 46
IV.GIZZ.HHN. 2021-09-11T06:56:19.14 0.6 undecidable manual S 160 56.2992 127 -0.89 37
IV.CELI.HHZ. 2021-09-11T06:56:18.98 0.3 undecidable manual S 97 45.7209 134 0.69 61
IV.MMN.HHE. 2021-09-11T06:56:18.60 0.6 undecidable manual S 1 48.3183 132 -0.1 48
IV.GRIS.EHZ. 2021-09-11T06:56:16.73 0.6 undecidable manual S 341 33.4443 144 0.19 48
IV.SPS2.HHE. 2021-09-11T06:56:16.41 0.6 undecidable manual S 120 35.8419 142 -0.45 46
IV.TDS.HHZ. 2021-09-11T06:56:16.99 0.6 undecidable manual S 53 38.1285 140 -0.18 48
IV.CAR1.HHZ. 2021-09-11T06:56:15.80 0.6 undecidable manual S 138 29.9478 147 -0.32 48
IV.MTSN.HNN. 2021-09-11T06:56:14.97 0.3 undecidable manual P 348 92.0412 111 -0.06 67
IV.LADO.EHE. 2021-09-11T06:56:14.38 0.3 undecidable manual P 102 87.8454 112 -0.17 66
IV.CET2.HHZ. 2021-09-11T06:56:14.60 0.6 undecidable manual S 345 8.3805 170 0.18 50
IV.MGR.HHZ. 2021-09-11T06:56:14.00 0.1 undecidable manual P 335 83.9493 113 -0.1 89
IV.SELL.HHZ. 2021-09-11T06:56:13.66 0.3 undecidable manual P 133 76.4679 116 0.4 64
IV.SIRI.HHZ. 2021-09-11T06:56:13.52 0.3 undecidable manual P 353 81.1521 114 -0.26 65
IV.PIPA.HHZ. 2021-09-11T06:56:13.30 0.3 undecidable manual P 87 71.6727 118 0.57 62
IV.MMN.HHE. 2021-09-11T06:56:11.16 0.3 undecidable manual P 1 48.3183 132 0.82 58
IV.GIZZ.HHN. 2021-09-11T06:56:10.55 0.1 undecidable manual P 160 56.2992 127 -0.56 85
IV.CELI.HHZ. 2021-09-11T06:56:10.11 0.1 undecidable manual P 97 45.7209 134 0.01 98
IV.SPS2.HHE. 2021-09-11T06:56:09.03 0.3 undecidable manual P 120 35.8419 142 -0.24 71
IV.TDS.HHZ. 2021-09-11T06:56:09.28 0.3 undecidable manual P 53 38.1285 140 -0.18 72
IV.GRIS.EHZ. 2021-09-11T06:56:09.07 0.1 undecidable manual P 341 33.4443 144 -0.02 100
IV.CAR1.HHZ. 2021-09-11T06:56:08.50 0.3 undecidable manual P 138 29.9478 147 -0.35 71
IV.CET2.HHZ. 2021-09-11T06:56:08.10 0.1 negative manual P 345 8.3805 170 0.23 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAR1.HHE. ML:1.5 0.00005985 0.14 AML other m 2021-09-11T06:56:08.64
IV.CET2.HHE. ML:2.4 0.00048550000000000004 0.16 AML other m 2021-09-11T06:56:14.81
IV.CET2.HHN. ML:2.6 0.000853 0.46 AML other m 2021-09-11T06:56:14.97
IV.CAR1.HHN. ML:1.8 0.0001105 0.74 AML other m 2021-09-11T06:56:16.61
IV.GRIS.EHN. ML:2.0 0.00017099999999999998 1.24 AML other m 2021-09-11T06:56:16.87
IV.GRIS.EHE. ML:2.0 0.00016549999999999998 1.06 AML other m 2021-09-11T06:56:16.40
IV.CELI.HHN. ML:1.5 0.0000497 0.64 AML other m 2021-09-11T06:56:21.37
IV.CELI.HHE. ML:1.4 0.000034699999999999996 0.4 AML other m 2021-09-11T06:56:21.68
IV.MGR.HHN. ML:1.7 0.000047799999999999996 1.16 AML other m 2021-09-11T06:56:26.05
IV.SIRI.HHE. ML:1.6 0.00003875 1.12 AML other m 2021-09-11T06:56:26.69
IV.MGR.HHE. ML:1.8 0.000056 0.14 AML other m 2021-09-11T06:56:26.38
IV.SIRI.HHN. ML:1.8 0.00006520000000000001 0.24 AML other m 2021-09-11T06:56:30.13
IX.SNR3.EHE.02 ML:2.1 0.000053150000000000004 0.08 AML other m 2021-09-11T06:57:03.87
IX.SNR3.EHN.02 ML:2.3 0.00008060000000000001 0.44 AML other m 2021-09-11T06:57:04.46
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