Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 21-12-2021 and time 21:01:06 (Italy) in region Costa Ionica Catanzarese (Catanzaro)

A magnitude ML 1.3 earthquake occured in region: Costa Ionica Catanzarese (Catanzaro), on

  • 21-12-2021 20:01:06 (UTC)
  • 21-12-2021 21:01:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.7490, 16.6020 at 8 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
Stalettì CZ 6 2433 2433
Montauro CZ 8 1732 4165
Soverato CZ 8 9204 13369
Gasperina CZ 8 2160 15529
Squillace CZ 8 3608 19137
Montepaone CZ 9 5282 24419
Borgia CZ 12 7611 32030
Petrizzi CZ 12 1131 33161
San Floro CZ 12 716 33877
Vallefiorita CZ 12 1771 35648
Palermiti CZ 13 1213 36861
Satriano CZ 14 3448 40309
Amaroni CZ 14 1855 42164
Gagliato CZ 14 505 42669
Davoli CZ 15 5607 48276
Centrache CZ 15 401 48677
Sant'Andrea Apostolo dello Ionio CZ 15 1937 50614
San Sostene CZ 16 1370 51984
Olivadi CZ 16 529 52513
Argusto CZ 16 522 53035
Cenadi CZ 17 563 53598
San Vito sullo Ionio CZ 17 1811 55409
Girifalco CZ 17 5945 61354
Catanzaro CZ 18 90612 151966
Chiaravalle Centrale CZ 18 5759 157725
Caraffa di Catanzaro CZ 18 1866 159591
Isca sullo Ionio CZ 18 1633 161224
Cortale CZ 20 2117 163341
Settingiano CZ 20 3124 166465

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km S of Catanzaro (90612 inhabitants)
35 Km SE of Lamezia Terme (70714 inhabitants)
59 Km SW of Crotone (62178 inhabitants)
68 Km SE of Cosenza (67546 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 1.3 2021-12-21
20:01:06		 38.7488 16.6025 8 2021-12-21
20:05:13		 Sala Sismica INGV-Roma 98797621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-21 20:01:06 ± 0.27
Latitude 38.7488 ± 0.0072
Longitude 16.6025 ± 0.0173
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98797621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1432
Semi-minor axis of confidence ellipse (meter) 614
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 279
Circular confidence region, given by single value of horizontal uncertainty (meter) 1430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 187
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.16008
Epicentral distance of station farthest from the epicenter (degree) 0.65740
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 98797621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-21 20:05:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CELI.HHZ. 2021-12-21T20:01:29.54 0.3 undecidable manual S 354 72.9714 50 0.7 58
IV.CAR1.HHZ. 2021-12-21T20:01:26.65 0.3 undecidable manual S 329 65.3901 50 -0.15 71
MN.TIP.HHZ. 2021-12-21T20:01:22.33 0.1 undecidable manual S 16 49.617 50 -0.28 94
IV.PLAC.HHZ. 2021-12-21T20:01:19.03 0.6 undecidable manual S 203 36.1416 50 0.03 50
IV.CELI.HHZ. 2021-12-21T20:01:19.14 0.3 undecidable manual P 354 72.9714 50 -0.18 69
IV.SERS.HHZ. 2021-12-21T20:01:18.31 0.6 undecidable manual S 13 32.745 104 0.28 48
IV.CAR1.HHZ. 2021-12-21T20:01:17.54 0.6 undecidable manual P 329 65.3901 50 -0.6 42
MN.TIP.HHZ. 2021-12-21T20:01:15.56 1.0 positive manual P 16 49.617 50 -0.16 24
IV.GRI.EHZ. 2021-12-21T20:01:13.11 0.6 undecidable manual S 297 17.7711 115 -0.02 52
IV.SERS.HHZ. 2021-12-21T20:01:13.23 0.1 positive manual P 13 32.745 104 0.15 100
IV.PLAC.HHZ. 2021-12-21T20:01:13.75 0.6 positive manual P 203 36.1416 50 0.11 49
IV.GRI.EHZ. 2021-12-21T20:01:10.40 0.6 undecidable manual P 297 17.7711 115 0.15 52
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GRI.EHN. ML:1.3 0.00016649999999999998 0.28 AML other m 2021-12-21T20:01:13.48
IV.GRI.EHE. ML:1.3 0.00019 0.7 AML other m 2021-12-21T20:01:13.42
IV.PLAC.HHN. ML:1.2 0.00006065 1.2 AML other m 2021-12-21T20:01:19.16
IV.PLAC.HHE. ML:1.3 0.00007549999999999999 0.76 AML other m 2021-12-21T20:01:19.29
IV.SERS.HHN. ML:0.9 0.00003485 0.42 AML other m 2021-12-21T20:01:19.71
IV.SERS.HHE. ML:0.8 0.00002355 0.84 AML other m 2021-12-21T20:01:25.92
IV.CAR1.HHN. ML:1.6 0.00007865 1.34 AML other m 2021-12-21T20:01:29.91
IV.CAR1.HHE. ML:1.6 0.0000746 0.46 AML other m 2021-12-21T20:01:29.52
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