Earthquake with magnitude of ML 0.8 on date 22-02-2019 and time 21:57:10 (Italy) in region 1 km NW Sortino (SR)

A magnitude ML 0.8 earthquake occured in region: 1 km NW Sortino (SR), on

  • 22-02-2019 20:57:10 (UTC)
  • 22-02-2019 21:57:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.1700, 15.0230 at 9 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Sortino SR 1 8690 8690
Ferla SR 9 2523 11213
Melilli SR 9 13621 24834
Cassaro SR 10 821 25655
Solarino SR 11 8091 33746
Carlentini SR 12 17798 51544
Lentini SR 13 24085 75629
Francofonte SR 14 12800 88429
Priolo Gargallo SR 15 12091 100520
Floridia SR 15 22762 123282
Canicattini Bagni SR 15 7109 130391
Buscemi SR 15 1051 131442
Palazzolo Acreide SR 16 8808 140250
Buccheri SR 16 1999 142249
Augusta SR 19 36305 178554

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km W of Siracusa (122291 inhabitants)
38 Km S of Catania (314555 inhabitants)
38 Km NE of Ragusa (73313 inhabitants)
42 Km NE of Modica (54633 inhabitants)
50 Km NE of Vittoria (63339 inhabitants)
51 Km S of Acireale (52622 inhabitants)
69 Km E of Gela (75827 inhabitants)
92 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
Reviewed
Rev100
ML 0.8 2019-02-22
20:57:10
37.1703 15.0228 9 2019-02-22
21:05:00
Sala Sismica INGV-Roma 65794201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-22 20:57:10 ± 0.16
Latitude 37.1703 ± 0.0045
Longitude 15.0228 ± 0.0045
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 65794201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 406
Semi-minor axis of confidence ellipse (meter) 354
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 47
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 219
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.08
Epicentral distance of station closest to the epicenter (degree) 0.04227
Epicentral distance of station farthest from the epicenter (degree) 0.21494
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 65794201
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-22 21:05:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HLNI.HHZ. 2019-02-22T20:57:19.38 0.6 undecidable manual S 326 23.8539 110 0.07 48
IV.HAGA.HHZ. 2019-02-22T20:57:17.20 0.3 undecidable manual S 42 17.2716 117 -0.01 74
IV.HLNI.HHZ. 2019-02-22T20:57:15.47 0.6 undecidable manual P 326 23.8539 110 -0.13 48
IV.HAGA.HHZ. 2019-02-22T20:57:14.40 0.6 undecidable manual P 42 17.2716 117 0.02 49
IV.SSY.HHZ. 2019-02-22T20:57:13.88 0.3 undecidable manual S 107 4.6953 151 -0.04 75
IV.SSY.HHZ. 2019-02-22T20:57:12.53 0.1 undecidable manual P 107 4.6953 151 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HLNI.HHE. ML:0.9 0.000051493700000000005 1.2032 AML other m 2019-02-22T20:57:19.01
IV.HLNI.HHN. ML:0.7 0.00003148531 1.2032 AML other m 2019-02-22T20:57:19.65
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