Earthquake with magnitude of ML 2.1 on date 21-07-2019 and time 09:56:59 (UTC) in region 5 km E Menfi (AG)

A magnitude ML 2.1 earthquake occured in region: 5 km E Menfi (AG), on

  • 21-07-2019 09:56:59 (UTC)
  • 21-07-2019 11:56:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.6030, 13.0200 at 9 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Menfi AG 5 12592 12592
Sambuca di Sicilia AG 10 5877 18469
Santa Margherita di Belice AG 10 6363 24832
Montevago AG 12 3006 27838
Sciacca AG 12 40928 68766
Salaparuta TP 17 1696 70462
Partanna TP 18 10607 81069
Caltabellotta AG 18 3681 84750
Poggioreale TP 18 1494 86244

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Mazara del Vallo (51718 inhabitants)
56 Km E of Marsala (83194 inhabitants)
60 Km NW of Agrigento (59770 inhabitants)
64 Km SE of Trapani (68759 inhabitants)
65 Km SW of Palermo (674435 inhabitants)
68 Km SW of Bagheria (55387 inhabitants)
93 Km W 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 2019-07-21
09:56:59
37.6032 13.0203 9 2019-11-13
14:31:00
Bollettino Sismico Italiano INGV 71939281
Reviewed
Rev100
ML 2.2 2019-07-21
09:56:59
37.605 13.025 9 2019-07-21
10:12:25
Sala Sismica INGV-Roma 70765291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-21 09:56:59 ± 0.34
Latitude 37.6032 ± 0.0153
Longitude 13.0203 ± 0.0170
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 71939281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1865
Semi-minor axis of confidence ellipse (meter) 1179
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 321
Circular confidence region, given by single value of horizontal uncertainty (meter) 1860.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 167
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.06835
Epicentral distance of station farthest from the epicenter (degree) 0.87054
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 71939281
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-27 12:03:32

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 70765291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-21 10:12:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CLTA.HHZ. 2019-07-21T09:57:18.98 0.3 undecidable manual P 120 96.6255 50 3.12 0
IV.FAVR.HHZ. 2019-07-21T09:57:15.79 0.3 undecidable manual P 123 68.0763 50 4.32 0
IV.ERC.EHN. 2019-07-21T09:57:14.41 0.6 undecidable manual P 322 61.2942 50 3.99 0
IV.MBFT.HHZ. 2019-07-21T09:57:11.97 0.6 undecidable manual S 351 38.5281 50 -0.51 28
IV.CAVT.HHZ. 2019-07-21T09:57:08.73 0.6 undecidable manual S 290 24.753 110 0.31 48
IV.CRJA.HHZ. 2019-07-21T09:57:08.14 0.6 undecidable manual S 356 22.0668 112 0.58 44
IV.CORL.HHZ. 2019-07-21T09:57:07.25 0.1 undecidable manual P 38 40.7259 50 0 44
IV.MFNL.HHZ. 2019-07-21T09:57:07.42 0.6 undecidable manual S 338 22.5552 112 -0.28 48
IV.MARS.EHZ. 2019-07-21T09:57:07.69 0.1 negative manual P 293 43.3233 50 0.04 25
IV.MBFT.HHZ. 2019-07-21T09:57:06.48 0.1 undecidable manual P 351 38.5281 50 -0.42 57
IV.CAVT.HHZ. 2019-07-21T09:57:04.63 0.1 negative manual P 290 24.753 110 0.07 100
IV.CRJA.HHZ. 2019-07-21T09:57:04.41 0.1 undecidable manual P 356 22.0668 112 0.35 94
IV.MFNL.HHZ. 2019-07-21T09:57:04.50 0.1 undecidable manual P 338 22.5552 112 0.35 94
IV.MMGO.HHZ. 2019-07-21T09:57:02.61 0.3 undecidable manual S 330 7.5813 140 -0.76 62
IV.MMGO.HHZ. 2019-07-21T09:57:01.49 0.1 undecidable manual P 330 7.5813 140 -0.16 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRJA.HHN. ML:2.4 0.0016899999999999999 1.02 AML other m 2019-07-21T09:57:08.28
IV.CRJA.HHE. ML:2.6 0.002705 0.5 AML other m 2019-07-21T09:57:08.71
IV.CAVT.HHN. ML:2.4 0.001745 0.12 AML other m 2019-07-21T09:57:09.10
IV.MFNL.HHN. ML:2.2 0.00115 1.4 AML other m 2019-07-21T09:57:10.96
IV.CAVT.HHE. ML:2.3 0.001265 0.34 AML other m 2019-07-21T09:57:10.95
IV.MFNL.HHE. ML:2.3 0.0014399999999999999 1.2 AML other m 2019-07-21T09:57:12.93
IV.MBFT.HHE. ML:2.1 0.000492 0.46 AML other m 2019-07-21T09:57:12.75
IV.MBFT.HHN. ML:2.2 0.0006585 1.56 AML other m 2019-07-21T09:57:12.21
IV.CORL.HHE. ML:1.8 0.00023899999999999998 1.64 AML other m 2019-07-21T09:57:17.03
IV.MARS.EHN. ML:1.7 0.000158 0.36 AML other m 2019-07-21T09:57:19.46
IV.CORL.HHN. ML:2.0 0.000298 0.7 AML other m 2019-07-21T09:57:21.22
IV.MARS.EHE. ML:1.8 0.0001805 0.6 AML other m 2019-07-21T09:57:23.94
IV.FAVR.HHN. ML:1.8 0.0001057 0.62 AML other m 2019-07-21T09:57:32.57
IV.FAVR.HHE. ML:1.4 0.00004685 1.12 AML other m 2019-07-21T09:57:33.58
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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