Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 26-02-2021 and time 11:52:11 (Italy) in region 4 km E Gangi (PA)

A magnitude ML 1.8 earthquake occured in region: 4 km E Gangi (PA), on

  • 26-02-2021 10:52:11 (UTC)
  • 26-02-2021 11:52:11 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.8130, 14.2430 at 7 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
Gangi PA 4 6811 6811
Geraci Siculo PA 9 1945 8756
Castel di Lucio ME 10 1294 10050
Sperlinga EN 11 805 10855
Petralia Soprana PA 12 3360 14215
San Mauro Castelverde PA 12 1701 15916
Petralia Sottana PA 13 2821 18737
Bompietro PA 14 1401 20138
Nicosia EN 16 13899 34037
Blufi PA 16 1029 35066
Mistretta ME 17 4791 39857
Alimena PA 17 2032 41889
Castellana Sicula PA 18 3411 45300
Pettineo ME 18 1350 46650
Tusa ME 19 2925 49575
Castelbuono PA 19 8943 58518
Motta d'Affermo ME 20 739 59257
Reitano ME 20 806 60063

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NE of Caltanissetta (63360 inhabitants)
71 Km E of Bagheria (55387 inhabitants)
81 Km NE of Agrigento (59770 inhabitants)
82 Km W of Catania (314555 inhabitants)
83 Km N of Gela (75827 inhabitants)
84 Km E of Palermo (674435 inhabitants)
84 Km W of Acireale (52622 inhabitants)
99 Km N of Vittoria (63339 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 1.8 2021-02-26
10:52:11		 37.8128 14.2428 7 2021-07-12
16:55:01		 Bollettino Sismico Italiano INGV 88000201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-26 10:52:11 ± 0.12
Latitude 37.8128 ± 0.0063
Longitude 14.2428 ± 0.0080
Depth (km) 7 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88000201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 758
Semi-minor axis of confidence ellipse (meter) 388
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 26
Circular confidence region, given by single value of horizontal uncertainty (meter) 760.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 89
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.10342
Epicentral distance of station farthest from the epicenter (degree) 0.79500
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:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 88000201
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-16 16:33:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IFIL.HHE. 2021-02-26T10:52:27.54 0.6 undecidable manual P 19 88.245 50 0.82 35
IV.MUCR.HHZ. 2021-02-26T10:52:22.48 0.3 undecidable manual P 65 60.7947 50 -0.01 69
IV.GIB.HHZ. 2021-02-26T10:52:21.07 0.6 undecidable manual S 316 27.3504 104 0.16 47
IV.GALF.HHZ. 2021-02-26T10:52:21.79 0.6 undecidable manual S 112 30.5472 102 -0.21 47
IV.PLLN.EHN. 2021-02-26T10:52:19.23 0.6 undecidable manual S 336 21.7671 107 0.18 48
IV.ALJA.HHZ. 2021-02-26T10:52:19.78 0.6 undecidable manual P 261 43.4232 50 -0.03 47
IV.RESU.HHZ. 2021-02-26T10:52:19.87 0.6 undecidable manual S 222 24.5532 105 -0.12 48
IV.CAGR.HHZ. 2021-02-26T10:52:18.51 0.3 undecidable manual P 133 30.9468 102 1.03 53
IV.MSFR.HHZ. 2021-02-26T10:52:18.77 0.3 undecidable manual P 51 39.1275 100 -0.33 67
IV.CSLB.HHZ. 2021-02-26T10:52:18.93 0.3 undecidable manual S 311 21.2676 108 0.04 74
IV.GALF.HHZ. 2021-02-26T10:52:17.28 0.3 undecidable manual P 112 30.5472 102 -0.13 71
IV.GIB.HHZ. 2021-02-26T10:52:16.38 0.3 undecidable manual P 316 27.3504 104 -0.4 67
IV.PETRA.HHZ. 2021-02-26T10:52:16.29 0.3 undecidable manual S 282 11.4774 120 0.54 67
IV.CSLB.HHZ. 2021-02-26T10:52:15.22 0.1 undecidable manual P 311 21.2676 108 -0.4 91
IV.RESU.HHZ. 2021-02-26T10:52:15.98 0.1 undecidable manual P 222 24.5532 105 -0.27 93
IV.PLLN.EHN. 2021-02-26T10:52:15.69 0.1 undecidable manual P 336 21.7671 107 -0.01 98
IV.PETRA.HHZ. 2021-02-26T10:52:13.83 0.1 undecidable manual P 282 11.4774 120 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHN. ML:2.0 0.00137192435 0.3008 AML other m 2021-02-26T10:52:16.84
IV.PETRA.HHE. ML:2.1 0.0017559315 0.2624 AML other m 2021-02-26T10:52:16.75
IV.CSLB.HHN. ML:1.3 0.0001406012 0.2624 AML other m 2021-02-26T10:52:20.98
IV.CSLB.HHE. ML:1.2 0.000107289965 0.48 AML other m 2021-02-26T10:52:21.21
IV.ESCV.HHE. ML:2.3 0.000554 0.24 AML other m 2021-02-26T10:52:21.20
IV.PLLN.EHE. ML:1.8 0.0004565332 0.5632 AML other m 2021-02-26T10:52:21.71
IV.PLLN.EHN. ML:1.8 0.0004385 0.26 AML other m 2021-02-26T10:52:22.63
IV.GIB.HHE. ML:1.7 0.00028500000000000004 0.52 AML other m 2021-02-26T10:52:23.27
IV.RESU.HHN. ML:1.9 0.0005045 0.88 AML other m 2021-02-26T10:52:24.49
IV.GIB.HHN. ML:1.9 0.0003976962 0.416 AML other m 2021-02-26T10:52:25.53
IV.MSFR.HHE. ML:1.3 0.00006540997 0.4608 AML other m 2021-02-26T10:52:26.50
IV.RESU.HHE. ML:1.7 0.00032954405 0.3584 AML other m 2021-02-26T10:52:28.48
IV.GALF.HNN. ML:1.4 0.000120442585 0.8064 AML other m 2021-02-26T10:52:29.07
IV.MSFR.HHN. ML:1.3 0.00007664507500000001 0.6016 AML other m 2021-02-26T10:52:30.22
IV.GALF.HHE. ML:2.0 0.00047650000000000004 0.7 AML other m 2021-02-26T10:52:30.64
IV.ALJA.HHE. ML:1.7 0.00014549999999999999 0.38 AML other m 2021-02-26T10:52:30.12
IV.ALJA.HHN. ML:1.4 0.0000877 0.38 AML other m 2021-02-26T10:52:30.13
IV.CAGR.HHN. ML:1.7 0.00023749905 0.5184 AML other m 2021-02-26T10:52:30.93
IV.GALF.HNE. ML:1.4 0.00011068317 0.8 AML other m 2021-02-26T10:52:31.23
IV.ESCV.HHN. ML:2.5 0.000781 0.2 AML other m 2021-02-26T10:52:33.65
IV.CAGR.HHE. ML:1.8 0.00029426830000000003 0.5248 AML other m 2021-02-26T10:52:35.00
IV.GALF.HHN. ML:1.9 0.0004189175 0.5632 AML other m 2021-02-26T10:52:35.77
IV.MUCR.HHN. ML:1.8 0.000136 0.24 AML other m 2021-02-26T10:52:36.84
IV.MUCR.HHE. ML:1.6 0.0000756193 0.4608 AML other m 2021-02-26T10:52:40.85
IV.IFIL.HHE. ML:2.5 0.00038547855000000005 0.3584 AML other m 2021-02-26T10:52:42.71
IV.IFIL.HHN. ML:2.1 0.00016071705 0.2432 AML other m 2021-02-26T10:52:42.80
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