Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 22-12-2021 and time 07:01:12 (Italy) in region 2 km S Squillace (CZ)

A magnitude ML 1.0 earthquake occured in region: 2 km S Squillace (CZ), on

  • 22-12-2021 06:01:12 (UTC)
  • 22-12-2021 07:01:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.7680, 16.5180 at 18 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
Squillace CZ 2 3608 3608
Montauro CZ 2 1732 5340
Stalettì CZ 2 2433 7773
Gasperina CZ 3 2160 9933
Vallefiorita CZ 5 1771 11704
Montepaone CZ 5 5282 16986
Palermiti CZ 6 1213 18199
Amaroni CZ 7 1855 20054
Borgia CZ 7 7611 27665
San Floro CZ 8 716 28381
Petrizzi CZ 8 1131 29512
Centrache CZ 9 401 29913
Soverato CZ 9 9204 39117
Olivadi CZ 10 529 39646
Girifalco CZ 10 5945 45591
Cenadi CZ 11 563 46154
Gagliato CZ 11 505 46659
Satriano CZ 11 3448 50107
San Vito sullo Ionio CZ 11 1811 51918
Argusto CZ 12 522 52440
Cortale CZ 12 2117 54557
Chiaravalle Centrale CZ 13 5759 60316
Caraffa di Catanzaro CZ 13 1866 62182
Davoli CZ 13 5607 67789
San Sostene CZ 15 1370 69159
Jacurso CZ 15 624 69783
Sant'Andrea Apostolo dello Ionio CZ 16 1937 71720
Settingiano CZ 16 3124 74844
Maida CZ 17 4566 79410
Catanzaro CZ 17 90612 170022
San Pietro a Maida CZ 17 4200 174222
Polia VV 18 1023 175245
Torre di Ruggiero CZ 18 1033 176278
Cardinale CZ 18 2188 178466
Marcellinara CZ 18 2285 180751
Curinga CZ 19 6779 187530
Isca sullo Ionio CZ 19 1633 189163
Filadelfia VV 20 5384 194547
Tiriolo CZ 20 3870 198417
Amato CZ 20 835 199252

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km SW of Catanzaro (90612 inhabitants)
29 Km SE of Lamezia Terme (70714 inhabitants)
63 Km SE of Cosenza (67546 inhabitants)
63 Km SW of Crotone (62178 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 1.0 2021-12-22
06:01:12		 38.768 16.5182 18 2021-12-22
06:11:30		 Sala Sismica INGV-Roma 98807781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-22 06:01:12 ± 0.08
Latitude 38.7680 ± 0.0054
Longitude 16.5182 ± 0.0069
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98807781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 730
Semi-minor axis of confidence ellipse (meter) 160
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 129
Circular confidence region, given by single value of horizontal uncertainty (meter) 730.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 165
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.09353
Epicentral distance of station farthest from the epicenter (degree) 0.63402
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 98807781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-22 06:11:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.JOPP.HHZ. 2021-12-22T06:01:30.79 0.3 undecidable manual S 252 57.5979 99 0 71
IV.PLAC.HHZ. 2021-12-22T06:01:25.04 0.3 undecidable manual S 191 36.0417 106 -0.11 73
IV.CELI.HHZ. 2021-12-22T06:01:25.32 0.3 undecidable manual P 359 70.374 97 0.18 67
IV.SERS.HHZ. 2021-12-22T06:01:24.61 0.3 undecidable manual S 26 33.1446 108 0.2 72
IV.CAR1.HHZ. 2021-12-22T06:01:23.22 0.6 undecidable manual P 334 59.9955 98 -0.33 44
IV.JOPP.HHZ. 2021-12-22T06:01:23.29 0.3 undecidable manual P 252 57.5979 99 0.1 70
MN.TIP.HHZ. 2021-12-22T06:01:21.73 0.3 undecidable manual P 24 50.1165 100 -0.32 68
IV.PLAC.HHZ. 2021-12-22T06:01:20.02 0.1 undecidable manual P 191 36.0417 106 0.09 97
IV.GRI.EHZ. 2021-12-22T06:01:19.15 0.3 undecidable manual S 305 10.3785 145 -0.2 75
IV.SERS.HHZ. 2021-12-22T06:01:19.52 0.1 undecidable manual P 26 33.1446 108 0.01 99
IV.GRI.EHZ. 2021-12-22T06:01:16.73 0.1 undecidable manual P 305 10.3785 145 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GRI.EHN. ML:1.2 0.0001455 0.26 AML other m 2021-12-22T06:01:19.92
IV.GRI.EHE. ML:1.2 0.000147 1.28 AML other m 2021-12-22T06:01:20.08
IV.PLAC.HHN. ML:1.0 0.000037140565 0.2784 AML other m 2021-12-22T06:01:25.47
IV.PLAC.HHE. ML:1.1 0.000046678455 0.2592 AML other m 2021-12-22T06:01:26.30
IV.SERS.HHE. ML:0.6 0.000014168285 0.1792 AML other m 2021-12-22T06:01:26.45
IV.SERS.HHN. ML:0.6 0.00001637328 0.2016 AML other m 2021-12-22T06:01:24.78
IV.SERS.HNE. ML:0.7 0.000018671546 0.16 AML other m 2021-12-22T06:01:24.86
IV.SERS.HNN. ML:0.6 0.000012909694 0.2016 AML other m 2021-12-22T06:01:24.78
IV.PLAC.HNE. ML:1.2 0.000055863539999999994 0.3104 AML other m 2021-12-22T06:01:26.30
IV.PLAC.HNN. ML:1.0 0.00004015165 0.2912 AML other m 2021-12-22T06:01:25.48
IV.CAR1.HNE. ML:1.3 0.000041555575 0.352 AML other m 2021-12-22T06:01:36.65
IV.CAR1.HNN. ML:1.5 0.00006591421000000001 0.3904 AML other m 2021-12-22T06:01:36.23
IV.CAR1.HHE. ML:1.3 0.000040425495 0.3392 AML other m 2021-12-22T06:01:34.82
IV.CAR1.HHN. ML:1.4 0.000051488634999999996 0.4416 AML other m 2021-12-22T06:01:36.22
IV.JOPP.HHE. ML:1.0 0.00001962996065 0.1792 AML other m 2021-12-22T06:01:32.00
IV.JOPP.HHN. ML:0.9 0.000016873321 0.2016 AML other m 2021-12-22T06:01:33.05
IV.JOPP.HNE. ML:1.0 0.0000210965045 0.2304 AML other m 2021-12-22T06:01:32.40
IV.JOPP.HNN. ML:1.0 0.00002232827 0.2208 AML other m 2021-12-22T06:01:32.05
IV.CELI.HNE. ML:0.5 0.000006930014 0.08 AML other m 2021-12-22T06:01:33.49
IV.CELI.HHE. ML:0.8 0.000007851243099999998 0.08 AML other m 2021-12-22T06:01:33.49
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