Earthquake with magnitude of ML 1.5 on date 18-01-2021 and time 03:10:22 (Italy) in region 6 km N Sperlinga (EN)

A magnitude ML 1.5 earthquake occured in region: 6 km N Sperlinga (EN), on

  • 18-01-2021 02:10:22 (UTC)
  • 18-01-2021 03:10:22 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.82, 14.35 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
Sperlinga EN 7 805 805
Castel di Lucio ME 8 1294 2099
Nicosia EN 10 13899 15998
Capizzi ME 12 3176 19174
Mistretta ME 12 4791 23965
Gangi PA 13 6811 30776
Cerami EN 14 2006 32782
Reitano ME 17 806 33588
Pettineo ME 17 1350 34938
San Mauro Castelverde PA 17 1701 36639
Geraci Siculo PA 17 1945 38584
Motta d'Affermo ME 18 739 39323

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km NE of Caltanissetta (63360 inhabitants)
74 Km NW of Catania (314555 inhabitants)
76 Km W of Acireale (52622 inhabitants)
79 Km E of Bagheria (55387 inhabitants)
85 Km N of Gela (75827 inhabitants)
88 Km NE of Agrigento (59770 inhabitants)
92 Km E of Palermo (674435 inhabitants)
99 Km N of Vittoria (63339 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.5 2021-01-18
02:10:22
37.82 14.35 9 2021-01-18
02:21:35
Sala Sismica INGV-Roma 86342711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-18 02:10:22 ± 0.22
Latitude 37.82 ± 0.03
Longitude 14.35 ± 0.02
Depth (km) 9 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86342711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3664
Semi-minor axis of confidence ellipse (meter) 1095
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 208
Circular confidence region, given by single value of horizontal uncertainty (meter) 3660
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 124
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.55
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.71406
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 86342711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-18 02:21:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MTGR.HHZ. 2021-01-18T02:10:39.76 3.0 negative manual Pn -0.01 0
IV.AIO.HHZ. 2021-01-18T02:10:36.46 0.3 undecidable manual P 78 0.7141 50 -0.37 63
IV.CSLB.HHZ. 2021-01-18T02:10:33.90 0.3 undecidable manual S 297 0.2545 108 0.62 65
IV.MUCR.HHZ. 2021-01-18T02:10:32.97 0.1 undecidable manual P 62 0.4694 50 0.32 90
IV.GALF.HHZ. 2021-01-18T02:10:32.30 0.1 undecidable manual S 123 0.2068 112 0.76 82
IV.PETRA.HHZ. 2021-01-18T02:10:31.04 0.3 undecidable manual S 273 0.1835 114 0.32 71
IV.GIB.HHE. 2021-01-18T02:10:30.48 0.6 undecidable manual P 303 0.3031 50 0.68 42
IV.CAGR.HHE. 2021-01-18T02:10:28.52 0.3 undecidable manual P 149 0.2347 109 0.02 75
IV.CSLB.HHZ. 2021-01-18T02:10:28.25 0.1 undecidable manual P 297 0.2545 108 -0.67 85
IV.PLLN.EHZ. 2021-01-18T02:10:28.42 0.1 undecidable manual P 316 0.2329 110 -0.04 100
IV.PETRA.HHZ. 2021-01-18T02:10:27.11 0.1 undecidable manual P 273 0.1835 114 -0.33 95
IV.GALF.HHZ. 2021-01-18T02:10:27.06 0.1 undecidable manual P 123 0.2068 112 -0.86 79
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHN. ML:2.5 0.00211 1.64 AML other m 2021-01-18T02:10:34.02
IV.CSLB.HHN. ML:1.4 0.0001176 1.58 AML other m 2021-01-18T02:10:35.03
IV.PETRA.HHN. ML:1.8 0.000412 0.62 AML other m 2021-01-18T02:10:35.73
IV.CSLB.HHE. ML:1.3 0.000105 0.9 AML other m 2021-01-18T02:10:35.28
IV.PETRA.HHE. ML:1.7 0.000398 0.5 AML other m 2021-01-18T02:10:36.31
IV.GALF.HHE. ML:2.4 0.00158 0.6 AML other m 2021-01-18T02:10:37.11
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download