Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 21-09-2018 and time 23:21:27 (UTC) in region 2 km NW Militello in Val di Catania (CT)

A magnitude ML 2.1 earthquake occured in region: 2 km NW Militello in Val di Catania (CT), on

  • 21-09-2018 23:21:27 (UTC)
  • 22-09-2018 01:21:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.2880, 14.7790 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
Militello in Val di Catania CT 2 7443 7443
Palagonia CT 5 16608 24051
Scordia CT 6 17095 41146
Mineo CT 8 5159 46305
Francofonte SR 11 12800 59105
Ramacca CT 13 10894 69999
Vizzini CT 14 6241 76240
Grammichele CT 15 13418 89658
Licodia Eubea CT 16 3081 92739
Buccheri SR 19 1999 94738
Lentini SR 20 24085 118823

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km SW of Catania (314555 inhabitants)
40 Km N of Ragusa (73313 inhabitants)
43 Km NE of Vittoria (63339 inhabitants)
48 Km N of Modica (54633 inhabitants)
50 Km SW of Acireale (52622 inhabitants)
52 Km NW of Siracusa (122291 inhabitants)
53 Km NE of Gela (75827 inhabitants)
67 Km E of Caltanissetta (63360 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 2.1 2018-09-21
23:21:27		 37.2877 14.7787 10 2019-06-04
09:16:05		 Bollettino Sismico Italiano INGV 64569001
Reviewed
Rev100 		ML 2.1 2018-09-21
23:21:27		 37.2798 14.7873 10 2018-09-21
23:31:00		 Sala Sismica INGV-Roma 61191421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-21 23:21:27 ± 0.08
Latitude 37.2877 ± 0.0045
Longitude 14.7787 ± 0.0057
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 64569001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 360
Semi-minor axis of confidence ellipse (meter) 348
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 300
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 54
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.09623
Epicentral distance of station farthest from the epicenter (degree) 1.75008
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 31
Type of magnitude ML
Reference to an origin 64569001
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-01-07 10:30:21

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 61191421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-21 23:31:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PLAC.HHZ. 2018-09-21T23:21:58.08 0.3 undecidable manual P 48 194.2611 38 -0.53 42
IV.JOPP.HHZ. 2018-09-21T23:21:55.74 0.6 undecidable manual P 33 175.491 50 -0.5 31
IV.IACL.HHZ. 2018-09-21T23:21:50.63 0.6 undecidable manual P 345 143.0457 50 -0.61 34
IV.SOI.EHZ. 2018-09-21T23:21:50.52 0.3 undecidable manual P 52 141.8469 50 -0.54 53
IV.MSRU.HHZ. 2018-09-21T23:21:49.04 0.3 undecidable manual P 30 125.7741 50 0.46 56
IV.IVPL.HHZ. 2018-09-21T23:21:47.86 0.3 undecidable manual P 8 122.0889 50 -0.14 60
IV.MTTG.HHZ. 2018-09-21T23:21:46.98 0.3 undecidable manual P 45 113.2977 50 0.31 59
IV.CROCE.HHZ. 2018-09-21T23:21:44.97 0.6 undecidable manual S 203 54.9006 50 -0.05 47
IV.GALF.HHZ. 2018-09-21T23:21:43.88 0.6 undecidable manual S 338 50.5161 50 0.05 47
IV.AGST.EHZ. 2018-09-21T23:21:41.27 0.3 undecidable manual S 95 39.7269 50 0.31 68
IV.CLTA.HHZ. 2018-09-21T23:21:41.06 0.3 undecidable manual P 259 73.5708 50 0.53 61
MN.VAE.HHZ. 2018-09-21T23:21:41.62 0.3 undecidable manual S 298 42.5241 50 -0.1 71
IV.RAFF.HHZ. 2018-09-21T23:21:40.71 0.6 undecidable manual S 259 37.4292 50 0.35 45
IV.ESML.HHZ. 2018-09-21T23:21:40.35 0.3 undecidable manual S 14 37.7289 50 -0.07 72
IV.HMDC.HHZ. 2018-09-21T23:21:40.35 0.6 undecidable manual S 179 36.4413 50 0.26 46
IV.HPAC.HHZ. 2018-09-21T23:21:39.70 0.6 undecidable manual P 160 68.1762 50 0 46
IV.HAGA.HHZ. 2018-09-21T23:21:39.53 0.3 undecidable manual S 90 33.2445 50 0.31 69
IV.EPZF.HHZ. 2018-09-21T23:21:38.33 0.6 undecidable manual P 7 59.8956 50 -0.1 46
IV.SSY.HHZ. 2018-09-21T23:21:38.78 0.3 undecidable manual S 119 29.748 50 0.47 67
IV.EPOZ.HHZ. 2018-09-21T23:21:38.25 0.6 undecidable manual P 40 55.7997 50 0.45 43
IV.CROCE.HHZ. 2018-09-21T23:21:37.20 0.3 undecidable manual P 203 54.9006 50 -0.46 64
IV.GALF.HHZ. 2018-09-21T23:21:37.46 0.3 undecidable manual P 338 50.5161 50 0.48 64
MN.VAE.HHZ. 2018-09-21T23:21:36.05 0.6 undecidable manual P 298 42.5241 50 0.29 45
IV.ESML.HHZ. 2018-09-21T23:21:35.48 0.6 undecidable manual P 14 37.7289 50 0.47 44
IV.HMDC.HHZ. 2018-09-21T23:21:34.45 0.3 undecidable manual P 179 36.4413 50 -0.36 68
IV.RAFF.HHZ. 2018-09-21T23:21:34.69 0.1 undecidable manual P 259 37.4292 50 -0.28 92
IV.AGST.EHZ. 2018-09-21T23:21:34.93 0.1 positive manual P 95 39.7269 50 -0.39 89
IV.HAGA.HHZ. 2018-09-21T23:21:33.86 0.1 undecidable manual P 90 33.2445 50 -0.45 89
IV.HVZN.HHZ. 2018-09-21T23:21:33.74 0.3 undecidable manual S 205 13.3755 126 0.39 70
IV.SSY.HHZ. 2018-09-21T23:21:33.70 0.1 undecidable manual P 119 29.748 50 -0.08 97
IV.HLNI.HHZ. 2018-09-21T23:21:32.80 0.3 undecidable manual S 51 10.6782 133 0.18 74
IV.HLNI.HHZ. 2018-09-21T23:21:30.41 0.1 positive manual P 51 10.6782 133 -0.1 100
IV.HVZN.HHZ. 2018-09-21T23:21:30.79 0.1 undecidable manual P 205 13.3755 126 -0.14 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HAGA.HHN. ML:2.0 0.00046703805 0.0512 AML other m 2018-09-21T23:21:40.63
IV.HAGA.HHE. ML:2.0 0.00048073795 0.1152 AML other m 2018-09-21T23:21:39.94
IV.HMDC.HHN. ML:2.0 0.0003998718 0.1152 AML other m 2018-09-21T23:21:41.80
IV.HMDC.HHE. ML:2.1 0.00044559285 0.2304 AML other m 2018-09-21T23:21:41.26
IV.RAFF.HHN. ML:2.1 0.00051060525 0.1792 AML other m 2018-09-21T23:21:42.31
IV.RAFF.HHE. ML:2.1 0.0005440662499999999 0.448 AML other m 2018-09-21T23:21:41.59
IV.AGST.EHN. ML:2.3 0.0007156344 0.1536 AML other m 2018-09-21T23:21:43.79
IV.AGST.EHE. ML:2.6 0.001287782 0.32 AML other m 2018-09-21T23:21:41.64
IV.ESML.HHN. ML:2.0 0.0003392985 0.3968 AML other m 2018-09-21T23:21:42.92
IV.ESML.HHE. ML:2.0 0.0003286781 0.1792 AML other m 2018-09-21T23:21:44.67
IV.CROCE.HHN. ML:1.8 0.00016496994999999997 0.1408 AML other m 2018-09-21T23:21:45.86
IV.CROCE.HHE. ML:1.9 0.0002014677 0.1792 AML other m 2018-09-21T23:21:45.26
IV.GALF.HHE. ML:1.8 0.0001531706 0.4608 AML other m 2018-09-21T23:21:46.85
IV.GALF.HHN. ML:2.0 0.00026024295 0.5376 AML other m 2018-09-21T23:21:47.48
IV.EPOZ.HHE. ML:2.2 0.00039923605 0.192 AML other m 2018-09-21T23:21:53.04
IV.EPOZ.HHN. ML:2.6 0.0008388656 0.2304 AML other m 2018-09-21T23:21:49.20
IV.HPAC.HHE. ML:2.3 0.0003138497 0.256 AML other m 2018-09-21T23:21:52.06
IV.HPAC.HHN. ML:2.4 0.0004143508 0.2048 AML other m 2018-09-21T23:21:51.55
IV.CLTA.HHE. ML:1.6 0.000071525645 0.4608 AML other m 2018-09-21T23:21:57.96
IV.MTTG.HHN. ML:2.2 0.00011916185 0.576 AML other m 2018-09-21T23:22:03.36
IV.MTTG.HHE. ML:2.2 0.000135724965 0.5504 AML other m 2018-09-21T23:22:05.30
IV.IVPL.HHE. ML:2.3 0.00014938299999999998 0.448 AML other m 2018-09-21T23:22:10.69
IV.IVPL.HHN. ML:2.2 0.0001238449 0.2176 AML other m 2018-09-21T23:22:07.63
IV.MSRU.HHN. ML:2.5 0.00024193345 0.4864 AML other m 2018-09-21T23:22:06.05
IV.MSRU.HHE. ML:2.4 0.0001738792 0.2816 AML other m 2018-09-21T23:22:08.63
IV.SOI.EHE. ML:1.7 0.000032296254999999995 0.5248 AML other m 2018-09-21T23:22:10.61
IV.SOI.EHN. ML:2.0 0.00006176243 0.5632 AML other m 2018-09-21T23:22:10.67
IV.JOPP.HHE. ML:2.1 0.00004282943 0.32 AML other m 2018-09-21T23:22:16.35
IV.JOPP.HHN. ML:2.3 0.000082224405 0.3968 AML other m 2018-09-21T23:22:16.19
IV.PLAC.HHN. ML:2.0 0.0000295 0.62 AML other m 2018-09-21T23:22:27.53
IV.PLAC.HHE. ML:1.9 0.000025119775 0.5632 AML other m 2018-09-21T23:22:29.65
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
Waveforms Seismic signals in miniseed + resp format Download