Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 21-12-2023 and time 19:37:34 (Italy) in region 6 km SE Acri (CS)

A magnitude ML 1.3 earthquake occured in region: 6 km SE Acri (CS), on

  • 21-12-2023 18:37:34 (UTC)
  • 21-12-2023 19:37:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 39.4480, 16.4320 at 10 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
Acri CS 6 20858 20858
Luzzi CS 12 9396 30254
Rose CS 13 4373 34627
Santa Sofia d'Epiro CS 14 2628 37255
Bisignano CS 14 10203 47458
San Demetrio Corone CS 15 3559 51017
San Giorgio Albanese CS 15 1432 52449
San Cosmo Albanese CS 15 591 53040
San Pietro in Guarano CS 15 3663 56703
Longobucco CS 15 3183 59886
Vaccarizzo Albanese CS 16 1125 61011
Castiglione Cosentino CS 16 2896 63907
Celico CS 17 2802 66709
Lappano CS 17 941 67650
Rovito CS 18 3158 70808
Corigliano Calabro CS 18 40427 111235
Spezzano della Sila CS 18 4541 115776
Spezzano Piccolo CS 19 2079 117855
Zumpano CS 19 2570 120425

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NE of Cosenza (67546 inhabitants)
53 Km N of Lamezia Terme (70714 inhabitants)
62 Km N of Catanzaro (90612 inhabitants)
72 Km NW 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 1.3 2023-12-21
18:37:34		 39.4478 16.4318 10 2023-12-21
18:47:12		 Sala Sismica INGV-Roma 124183061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-21 18:37:34 ± 0.11
Latitude 39.4478 ± 0.0081
Longitude 16.4318 ± 0.0082
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124183061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 865
Semi-minor axis of confidence ellipse (meter) 583
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 195
Circular confidence region, given by single value of horizontal uncertainty (meter) 870.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.07464
Epicentral distance of station farthest from the epicenter (degree) 0.53330
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 124183061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-21 18:47:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SERS.HHZ. 2023-12-21T18:37:50.80 0.6 undecidable manual S 154 50.7159 50 -0.15 45
IV.CET2.HHZ. 2023-12-21T18:37:48.52 0.6 undecidable manual S 283 41.8248 50 -0.05 47
IV.PIPA.HHZ. 2023-12-21T18:37:46.17 0.6 undecidable manual S 83 33.1446 50 -0.08 47
IY.MCDA.HHZ.00 2023-12-21T18:37:45.95 0.3 negative manual P 143 58.8966 50 0.61 59
IV.GRIS.EHZ. 2023-12-21T18:37:45.33 0.6 undecidable manual P 303 59.1963 50 -0.06 45
IV.SERS.HHZ. 2023-12-21T18:37:44.12 0.6 undecidable manual P 154 50.7159 50 0.03 46
XE.SHEVA.HNZ. 2023-12-21T18:37:44.37 0.6 undecidable manual P 331 46.62 50 0.92 35
IV.LADO.EHZ. 2023-12-21T18:37:44.24 0.6 undecidable manual P 111 50.3163 50 0.22 44
IV.SALB.HHZ. 2023-12-21T18:37:43.72 0.6 negative manual P 351 48.2184 50 0.03 46
IV.CET2.HHZ. 2023-12-21T18:37:42.49 0.1 positive manual P 283 41.8248 50 -0.22 90
IV.SPS2.HHZ. 2023-12-21T18:37:42.09 0.6 undecidable manual S 205 19.1697 118 -0.09 48
XE.T0702.HHZ. 2023-12-21T18:37:42.64 1.0 positive manual P 316 42.5241 50 -0.17 23
IV.PIPA.HHZ. 2023-12-21T18:37:40.80 0.3 undecidable manual P 83 33.1446 50 -0.58 63
IV.SPS2.HHZ. 2023-12-21T18:37:39.02 1.0 undecidable manual P 205 19.1697 118 0 25
IV.CELI.HNZ. 2023-12-21T18:37:39.21 0.6 undecidable manual S 127 8.2806 140 0.01 50
IV.CELI.HNZ. 2023-12-21T18:37:37.30 0.1 undecidable manual P 127 8.2806 140 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PIPA.HHE. ML:1.5 0.000134 0.28 AML other m 2023-12-21T18:37:49.11
IV.PIPA.HHN. ML:1.3 0.00009604999999999999 0.62 AML other m 2023-12-21T18:37:50.02
IV.PIPA.HNE. ML:1.6 0.0001705662 0.3072 AML other m 2023-12-21T18:37:49.11
IV.PIPA.HNN. ML:1.6 0.0001625761 0.6016 AML other m 2023-12-21T18:37:53.64
IV.CET2.HHE. ML:1.2 0.000056810260000000005 0.7424 AML other m 2023-12-21T18:37:54.64
IV.CET2.HHN. ML:1.4 0.00008093918999999999 0.3584 AML other m 2023-12-21T18:37:51.33
XE.T0702.HHE. ML:0.5 0.000007849948050000001 44.6848 AML other m 2023-12-21T18:37:42.23
XE.T0702.HHN. ML:0.7 0.00001641478 1.216 AML other m 2023-12-21T18:38:03.51
XE.T0702.HNE. ML:1.0 0.000032084365 0.8576 AML other m 2023-12-21T18:38:02.00
XE.T0702.HNN. ML:1.2 0.000057299745 1.2672 AML other m 2023-12-21T18:38:02.41
IV.SALB.HHE. ML:1.0 0.00003073327 0.256 AML other m 2023-12-21T18:37:54.08
IV.SALB.HHN. ML:0.7 0.000017456360000000002 0.2944 AML other m 2023-12-21T18:37:54.53
IV.SALB.HNE. ML:1.2 0.000044938549999999993 1.1008 AML other m 2023-12-21T18:37:43.10
IV.SALB.HNN. ML:1.0 0.000029166144999999998 0.4992 AML other m 2023-12-21T18:37:54.28
IV.SERS.HHE. ML:1.1 0.00003017111 0.5248 AML other m 2023-12-21T18:37:53.80
IV.SERS.HHN. ML:1.0 0.000025334685 0.3072 AML other m 2023-12-21T18:37:55.97
IV.SERS.HNE. ML:1.2 0.00004578683 1.0368 AML other m 2023-12-21T18:37:43.76
IV.SERS.HNN. ML:1.1 0.00003593911 0.6016 AML other m 2023-12-21T18:37:53.52
IV.LADO.EHE. ML:1.2 0.000041742755 0.512 AML other m 2023-12-21T18:37:50.85
IV.LADO.EHN. ML:1.3 0.000048886115 0.3456 AML other m 2023-12-21T18:37:54.65
IV.GRIS.HNE. ML:1.8 0.00013328345 0.5888 AML other m 2023-12-21T18:37:50.12
IV.GRIS.HNN. ML:2.0 0.0001877936 0.96 AML other m 2023-12-21T18:37:51.99
IV.GRIS.EHE. ML:1.4 0.00004981732 1.3184 AML other m 2023-12-21T18:38:08.53
IV.GRIS.EHN. ML:1.3 0.00004191884 1.3184 AML other m 2023-12-21T18:38:08.87
IY.MCDA.HHE.00 ML:1.4 0.00006042508 1.0112 AML other m 2023-12-21T18:38:10.39
IY.MCDA.HHN.00 ML:1.6 0.000076810565 0.8448 AML other m 2023-12-21T18:37:51.33
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