Earthquake with magnitude of ML 2.1 on date 26-04-2018 and time 03:16:59 (Italy) in region Tirreno Meridionale (MARE)

A magnitude ML 2.1 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 26-04-2018 01:16:59 (UTC)
  • 26-04-2018 03:16:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.4300, 12.0680 at 10 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
60 Km NW of Trapani (68759 inhabitants)
77 Km NW of Marsala (83194 inhabitants)
98 Km NW of Mazara del Vallo (51718 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 2018-04-26
01:16:59
38.4297 12.068 10 2019-04-24
14:49:50
Bollettino Sismico Italiano INGV 66787911
Reviewed
Rev100
ML 1.7 2018-04-26
01:17:08
38.0332 12.5053 10 2018-04-26
01:43:37
Sala Sismica INGV-Roma 56109621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-04-26 01:16:59 ± 0.67
Latitude 38.4297 ± 0.0279
Longitude 12.0680 ± 0.0471
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 66787911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 4080
Semi-minor axis of confidence ellipse (meter) 3100
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 275
Circular confidence region, given by single value of horizontal uncertainty (meter) 4080.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 282
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.53
Epicentral distance of station closest to the epicenter (degree) 0.56567
Epicentral distance of station farthest from the epicenter (degree) 1.71591
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 66787911
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-03-22 11:00:27

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 56109621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-04-26 01:43:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CORL.HHZ. 2018-04-26T01:17:34.77 0.3 undecidable manual S 118 123.0879 50 -0.09 75
IV.MPG.SHE. 2018-04-26T01:17:33.59 0.6 undecidable manual S 104 116.2947 50 0.52 46
IV.PETRA.HHN. 2018-04-26T01:17:29.24 0.3 undecidable manual P 110 190.4649 38 -0.57 52
IV.CAVT.HHE. 2018-04-26T01:17:29.82 0.6 undecidable manual S 144 102.7194 50 0.4 49
IV.MCT.BHE. 2018-04-26T01:17:27.29 0.6 undecidable manual P 123 161.8158 50 1.48 26
IV.ALJA.HHZ. 2018-04-26T01:17:26.66 0.3 undecidable manual P 117 165.4122 50 0.3 63
IV.CSLB.HHZ. 2018-04-26T01:17:26.86 0.3 undecidable manual P 107 181.8846 38 -1.88 27
IV.MARS.EHZ. 2018-04-26T01:17:25.89 0.6 undecidable manual S 150 86.6466 50 0.74 45
MN.CLTB.HHN. 2018-04-26T01:17:22.13 0.3 undecidable manual P 133 137.862 50 0.02 74
IV.SOLUN.HHE. 2018-04-26T01:17:20.83 0.3 undecidable manual P 106 132.9669 50 -0.53 67
IV.CORL.HHZ. 2018-04-26T01:17:19.96 0.3 undecidable manual P 118 123.0879 50 0.12 75
IV.MPG.SHE. 2018-04-26T01:17:18.30 0.3 undecidable manual P 104 116.2947 50 -0.5 70
IV.CRJA.HHZ. 2018-04-26T01:17:18.02 0.3 undecidable manual P 130 107.4147 50 0.6 69
IV.MMGO.HHZ. 2018-04-26T01:17:18.57 0.3 undecidable manual P 137 116.3946 50 -0.24 74
IV.ERC.EHN. 2018-04-26T01:17:17.05 0.6 undecidable manual S 134 62.7927 50 -1.72 28
IV.USI.HHE. 2018-04-26T01:17:17.97 0.3 undecidable manual P 72 101.2209 50 1.5 45
IV.CAVT.HHE. 2018-04-26T01:17:16.58 0.6 undecidable manual P 144 102.7194 50 -0.12 52
IV.MARS.EHZ. 2018-04-26T01:17:14.69 0.1 undecidable manual P 150 86.6466 50 0.46 100
IV.ERC.EHN. 2018-04-26T01:17:09.29 0.3 undecidable manual P 134 62.7927 50 -1.25 56
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MARS.EHE. ML:2.1 0.0001585 0.66 AML other m 2018-04-26T01:17:31.73
IV.MARS.EHN. ML:2.2 0.000187 0.68 AML other m 2018-04-26T01:17:32.44
IV.MMGO.HHE. ML:1.8 0.0000427 0.54 AML other m 2018-04-26T01:17:33.91
IV.MMGO.HHN. ML:1.8 0.00005434999999999999 1.3 AML other m 2018-04-26T01:17:38.15
IV.CORL.HHE. ML:2.4 0.000186 0.6 AML other m 2018-04-26T01:17:43.99
IV.CORL.HHN. ML:2.3 0.00014050000000000003 1.28 AML other m 2018-04-26T01:17:44.16
IV.ALJA.HHE. ML:2.1 0.000054149999999999995 1.02 AML other m 2018-04-26T01:17:56.42
IV.ALJA.HHN. ML:2.2 0.000059149999999999994 1.08 AML other m 2018-04-26T01:17:56.41
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