Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 28-06-2021 and time 23:49:44 (UTC) in region 2 km N Palagonia (CT)

A magnitude ML 1.2 earthquake occured in region: 2 km N Palagonia (CT), on

  • 28-06-2021 23:49:44 (UTC)
  • 29-06-2021 01:49:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.3480, 14.7390 at 20 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
Palagonia CT 2 16608 16608
Ramacca CT 6 10894 27502
Militello in Val di Catania CT 9 7443 34945
Mineo CT 10 5159 40104
Scordia CT 11 17095 57199
Grammichele CT 17 13418 70617
Francofonte SR 18 12800 83417
Castel di Iudica CT 18 4625 88042

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km SW of Catania (314555 inhabitants)
47 Km N of Ragusa (73313 inhabitants)
48 Km NE of Vittoria (63339 inhabitants)
48 Km SW of Acireale (52622 inhabitants)
53 Km NE of Gela (75827 inhabitants)
54 Km N of Modica (54633 inhabitants)
59 Km NW of Siracusa (122291 inhabitants)
62 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 1.2 2021-06-28
23:49:44		 37.3482 14.7393 20 2021-12-29
11:12:22		 Bollettino Sismico Italiano INGV 94568891
Reviewed
Rev100 		ML 1.7 2021-06-28
23:49:44		 37.3665 14.7148 21 2021-06-29
00:00:26		 Sala Sismica INGV-Roma 92012391
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-28 23:49:44 ± 0.18
Latitude 37.3482 ± 0.0099
Longitude 14.7393 ± 0.0079
Depth (km) 20 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 94568891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1119
Semi-minor axis of confidence ellipse (meter) 358
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 171
Circular confidence region, given by single value of horizontal uncertainty (meter) 1120.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 172
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.68169
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 17
Type of magnitude ML
Reference to an origin 94568891
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-14 14:59:16

ML:1.7

Field Value
Value 1.7
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 92012391
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-06-29 00:00:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIZZ.HHZ. 2021-06-28T23:50:45.88 3.0 undecidable manual Sg 3 0
IV.MMGO.HHZ. 2021-06-28T23:50:09.59 3.0 undecidable manual P 0.38 0
IV.HPAC.HHZ. 2021-06-28T23:50:07.58 0.6 undecidable manual S 160 75.6687 98 0.13 45
IV.HAVL.HHZ. 2021-06-28T23:50:02.16 0.3 undecidable manual S 142 54.8007 102 0.21 69
IV.HMDC.HHZ. 2021-06-28T23:49:59.29 0.6 undecidable manual S 175 43.3233 106 0.31 46
IV.RAFF.HHZ. 2021-06-28T23:49:58.05 0.6 undecidable manual S 247 36.0417 110 0.91 39
IV.ACATE.HNE. 2021-06-28T23:49:58.34 0.6 undecidable manual S 210 41.7249 107 -0.22 46
IV.HPAC.HHZ. 2021-06-28T23:49:57.49 0.1 undecidable manual P 160 75.6687 98 -0.31 87
IV.HAGA.HHZ. 2021-06-28T23:49:57.86 0.6 undecidable manual S 101 37.3293 109 0.41 45
IV.SSY.HHZ. 2021-06-28T23:49:57.94 0.6 undecidable manual S 125 36.3414 110 0.75 40
IV.CLTA.HHN. 2021-06-28T23:49:57.47 0.3 undecidable manual P 253 71.7726 99 0.26 67
IV.CPTP.HHZ. 2021-06-28T23:49:55.03 0.3 undecidable manual P 278 51.3153 103 0.93 55
IV.HCRL.HHZ. 2021-06-28T23:49:55.23 0.6 undecidable manual S 106 26.8509 118 0.34 46
IV.HAVL.HHZ. 2021-06-28T23:49:54.32 0.3 undecidable manual P 142 54.8007 102 -0.3 68
IV.HVZN.HHZ. 2021-06-28T23:49:53.28 0.6 undecidable manual S 186 18.9699 130 0.15 50
IV.HMDC.HHZ. 2021-06-28T23:49:52.59 0.6 undecidable manual P 175 43.3233 106 -0.32 46
IV.ACATE.HNE. 2021-06-28T23:49:52.39 0.3 undecidable manual P 210 41.7249 107 -0.28 69
IV.HLNI.HHZ. 2021-06-28T23:49:51.67 0.3 undecidable manual S 90 11.6772 145 -0.14 77
IV.SSY.HHZ. 2021-06-28T23:49:51.94 0.1 undecidable manual P 125 36.3414 110 0.06 97
IV.RAFF.HHZ. 2021-06-28T23:49:51.47 0.1 undecidable manual P 247 36.0417 110 -0.38 91
IV.HAGA.HHZ. 2021-06-28T23:49:51.88 0.1 undecidable manual P 101 37.3293 109 -0.14 98
IV.HCRL.HHZ. 2021-06-28T23:49:50.38 0.1 undecidable manual P 106 26.8509 118 -0.16 99
IT.LNT.HGZ. 2021-06-28T23:49:50.77 1.0 undecidable manual P 106 24.1536 122 0.59 22
IV.HVZN.HHZ. 2021-06-28T23:49:49.10 0.1 undecidable manual P 186 18.9699 130 -0.43 93
IV.HLNI.HHZ. 2021-06-28T23:49:48.53 0.1 undecidable manual P 90 11.6772 145 -0.24 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HLNI.HHE. ML:1.4 0.00017094999999999998 0.1 AML other m 2021-06-28T23:49:51.80
IV.HLNI.HHN. ML:1.3 0.000154 0.1 AML other m 2021-06-28T23:49:51.80
IV.HVZN.HHN. ML:1.1 0.000069515885 0.2816 AML other m 2021-06-28T23:49:54.50
IV.HVZN.HNN. ML:1.1 0.000070317715 0.2816 AML other m 2021-06-28T23:49:54.50
IV.HCRL.HHN. ML:1.2 0.00007664632 0.1408 AML other m 2021-06-28T23:49:55.51
IV.HCRL.HHE. ML:1.0 0.000039149984999999995 0.0768 AML other m 2021-06-28T23:49:56.19
IV.HVZN.HNE. ML:1.0 0.000055246935000000004 0.384 AML other m 2021-06-28T23:49:56.72
IV.HVZN.HHE. ML:1.0 0.000056247175 0.384 AML other m 2021-06-28T23:49:56.72
IV.SSY.HHE. ML:1.8 0.0002445817 0.0768 AML other m 2021-06-28T23:49:58.03
IV.HAGA.HHE. ML:0.9 0.00002292092 0.1536 AML other m 2021-06-28T23:49:58.21
IV.RAFF.HHN. ML:1.0 0.00003291616 0.3328 AML other m 2021-06-28T23:49:58.46
IV.SSY.HHN. ML:2.3 0.0006553702 0.1152 AML other m 2021-06-28T23:49:59.17
IV.HAGA.HHN. ML:0.6 0.000017478413999999997 0.1152 AML other m 2021-06-28T23:50:00.20
IV.HMDC.HHE. ML:1.1 0.000032914855 0.1024 AML other m 2021-06-28T23:50:03.12
IV.HAVL.HHN. ML:1.5 0.000063767135 0.1408 AML other m 2021-06-28T23:50:03.54
IV.HAVL.HHE. ML:1.3 0.000041953555 0.2304 AML other m 2021-06-28T23:50:03.68
IV.HMDC.HHN. ML:1.0 0.00002980564 0.128 AML other m 2021-06-28T23:50:03.81
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