Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 25-09-2021 and time 22:41:14 (Italy) in region Costa Ionica Crotonese (Crotone)

A magnitude ML 1.6 earthquake occured in region: Costa Ionica Crotonese (Crotone), on

  • 25-09-2021 20:41:14 (UTC)
  • 25-09-2021 22:41:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.2310, 17.1810 at 10 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
Strongoli KR 12 6571 6571
Cirò Marina KR 16 14902 21473
Rocca di Neto KR 16 5687 27160
Melissa KR 16 3549 30709
Crotone KR 17 62178 92887
San Nicola dell'Alto KR 19 856 93743
Casabona KR 19 2718 96461
Carfizzi KR 20 661 97122
Cirò KR 20 2936 100058

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km N of Crotone (62178 inhabitants)
62 Km NE of Catanzaro (90612 inhabitants)
80 Km E of Lamezia Terme (70714 inhabitants)
80 Km E 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
Bulletin
Rev1000 		ML 1.6 2021-09-25
20:41:14		 39.2312 17.1812 11 2022-03-30
13:04:39		 Bollettino Sismico Italiano INGV 101395691
Reviewed
Rev100 		ML 1.4 2021-09-25
20:41:16		 39.2728 16.9117 10 2021-09-25
20:50:54		 Sala Sismica INGV-Roma 95878601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-25 20:41:14 ± 0.52
Latitude 39.2312 ± 0.0153
Longitude 17.1812 ± 0.0302
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 101395691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2611
Semi-minor axis of confidence ellipse (meter) 1674
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 283
Circular confidence region, given by single value of horizontal uncertainty (meter) 2610.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 288
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.77971
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 95878601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-25 20:50:54

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 101395691
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-23 22:29:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2021-09-25T20:42:47.25 3.0 negative manual Pg 14.88 0
IV.ESCV.HHZ. 2021-09-25T20:42:24.47 3.0 undecidable manual Sg 0.69 0
AC.VLO.HHZ. 2021-09-25T20:42:14.29 3.0 undecidable manual Sn -1.04 0
OT.OT11.EHZ. 2021-09-25T20:42:04.91 3.0 negative manual Pg 8.89 0
MN.KEK.HHZ. 2021-09-25T20:41:48.05 3.0 negative manual Pn 1.15 0
IV.SERS.HHZ. 2021-09-25T20:41:30.16 0.6 undecidable manual S 243 47.619 50 0.73 40
IV.SELL.HHZ. 2021-09-25T20:41:30.59 0.6 undecidable manual S 240 55.0005 50 -0.81 38
IV.CAR1.HHN. 2021-09-25T20:41:29.21 0.6 undecidable manual P 272 83.3499 50 0.73 37
IV.TDS.HHZ. 2021-09-25T20:41:29.69 0.3 undecidable manual P 304 86.5467 50 0.72 56
IV.PIPA.HHZ. 2021-09-25T20:41:28.03 0.6 undecidable manual S 312 42.1245 50 0.06 48
MN.TIP.HHZ. 2021-09-25T20:41:26.59 0.6 undecidable manual S 261 36.8298 50 0.05 49
IV.SELL.HHZ. 2021-09-25T20:41:24.23 0.6 undecidable manual P 240 55.0005 50 0.12 47
IV.CELI.HHZ. 2021-09-25T20:41:24.70 0.1 undecidable manual P 288 60.7947 50 -0.29 89
IV.SERS.HHZ. 2021-09-25T20:41:22.95 0.3 undecidable manual P 243 47.619 50 -0.01 73
MN.TIP.HHZ. 2021-09-25T20:41:21.07 0.1 undecidable manual P 261 36.8298 50 -0.23 94
IV.PIPA.HHZ. 2021-09-25T20:41:21.63 0.3 undecidable manual P 312 42.1245 50 -0.49 66
IV.LADO.EHZ. 2021-09-25T20:41:21.36 0.3 undecidable manual S 289 18.2706 120 -0.1 75
IV.LADO.EHZ. 2021-09-25T20:41:18.48 0.1 positive manual P 289 18.2706 120 0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LADO.EHN. ML:2.0 0.0007190401499999999 1.5776 AML other m 2021-09-25T20:41:25.95
IV.LADO.EHE. ML:2.2 0.001285 0.26 AML other m 2021-09-25T20:41:25.34
MN.TIP.HHN. ML:1.4 0.00008936977999999999 0.2816 AML other m 2021-09-25T20:41:27.82
IV.PIPA.HHN. ML:1.7 0.000151 0.26 AML other m 2021-09-25T20:41:28.35
MN.TIP.HNE. ML:1.5 0.00011568787499999999 0.4736 AML other m 2021-09-25T20:41:29.58
MN.TIP.HHE. ML:1.4 0.00009130339500000001 0.3968 AML other m 2021-09-25T20:41:29.90
MN.TIP.HNN. ML:1.5 0.00011145 0.42 AML other m 2021-09-25T20:41:29.82
IV.PIPA.HHE. ML:1.8 0.000232 0.34 AML other m 2021-09-25T20:41:30.58
IV.PIPA.HNE. ML:1.8 0.00021423560000000003 0.32 AML other m 2021-09-25T20:41:30.58
IV.SERS.HNN. ML:1.5 0.00009527484999999999 0.7936 AML other m 2021-09-25T20:41:30.57
IV.CELI.HHE. ML:1.2 0.00003485687499999999 0.4224 AML other m 2021-09-25T20:41:33.84
IV.SERS.HHE. ML:1.5 0.00009615 0.38 AML other m 2021-09-25T20:41:34.86
IV.SERS.HHN. ML:1.5 0.0000892 0.6 AML other m 2021-09-25T20:41:34.82
IV.SERS.HNE. ML:1.5 0.000082857415 0.6144 AML other m 2021-09-25T20:41:34.82
IV.SELL.HNE. ML:1.9 0.00019791750000000002 1.232 AML other m 2021-09-25T20:41:36.89
IV.PIPA.HNN. ML:1.7 0.0001538147 1.3984 AML other m 2021-09-25T20:41:37.06
IV.SELL.HHN. ML:1.4 0.000065402955 0.4992 AML other m 2021-09-25T20:41:38.07
IV.SELL.HNN. ML:2.0 0.00022649999999999998 0.5 AML other m 2021-09-25T20:41:38.07
IV.SELL.HHE. ML:1.4 0.000062798545 1.3984 AML other m 2021-09-25T20:41:38.87
IV.CELI.HHN. ML:1.4 0.000045333095 0.4608 AML other m 2021-09-25T20:41:43.64
IV.CELI.HNE. ML:1.4 0.000047756996000000006 0.64 AML other m 2021-09-25T20:41:45.41
IV.CELI.HNN. ML:1.5 0.000058135505000000006 1.4752 AML other m 2021-09-25T20:41:45.11
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