Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 23-07-2015 and time 04:18:40 (UTC) in region Stretto di Messina (Reggio di Calabria, Messina)

A magnitude ML 1.5 earthquake occured in region: Stretto di Messina (Reggio di Calabria, Messina), on

  • 23-07-2015 04:18:40 (UTC)
  • 23-07-2015 06:18:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.2340, 15.6280 at 23 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
Villa San Giovanni RC 2 13784 13784
Campo Calabro RC 3 4536 18320
Fiumara RC 6 1018 19338
Messina ME 8 238439 257777
Scilla RC 8 4964 262741
San Roberto RC 10 1750 264491
Calanna RC 10 934 265425
Laganadi RC 12 413 265838
Sant'Alessio in Aspromonte RC 13 343 266181
Reggio di Calabria RC 14 183035 449216
Santo Stefano in Aspromonte RC 16 1263 450479
Bagnara Calabra RC 16 10255 460734
Villafranca Tirrena ME 17 8584 469318
Saponara ME 18 3988 473306
Rometta ME 20 6650 479956

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km NE of Messina (238439 inhabitants)
14 Km N of Reggio di Calabria (183035 inhabitants)
80 Km NE of Acireale (52622 inhabitants)
94 Km NE of Catania (314555 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 1.5 2015-07-23
04:18:40		 38.2343 15.6283 23 2016-01-08
08:53:02		 Bollettino Sismico Italiano INGV 20481741
Reviewed
Rev100 		ML 1.5 2015-07-23
04:18:40		 38.227 15.6278 23 2015-07-23
04:58:34		 Sala Sismica INGV-Roma 20455371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2015-07-23 04:18:40 ± 0.1
Latitude 38.2343 ± 0.0036
Longitude 15.6283 ± 0.0034
Depth (km) 23 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 20481741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 409
Semi-minor axis of confidence ellipse (meter) 56
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 348
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) 101
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.09893
Epicentral distance of station farthest from the epicenter (degree) 0.52790
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 20481741
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-11-18 10:52:14

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 20455371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2015-07-23 04:58:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.AIO.HHE. 2015-07-23T04:18:55.01 0.3 undecidable manual S 230 45.2214 110 -0.25 69
IV.JOPP.HHN. 2015-07-23T04:18:55.58 0.3 undecidable manual S 28 47.0196 109 -0.12 70
IV.MCSR.HHZ. 2015-07-23T04:18:53.86 0.3 undecidable manual S 242 39.5271 113 0.01 73
IV.SOI.EHZ. 2015-07-23T04:18:53.75 0.3 undecidable manual S 116 41.2254 112 -0.52 66
IV.MILZ.HHZ. 2015-07-23T04:18:52.44 0.3 undecidable manual S 277 34.8429 117 -0.27 69
IV.MTTG.HHZ. 2015-07-23T04:18:50.53 0.6 undecidable manual S 166 26.4513 125 -0.25 48
IV.MPNC.HHZ. 2015-07-23T04:18:50.46 0.3 undecidable manual S 248 25.9518 126 -0.21 71
IV.IVPL.HHZ. 2015-07-23T04:18:50.88 0.6 undecidable manual P 286 58.5969 105 0.03 47
IV.GMB.BHZ. 2015-07-23T04:18:49.43 0.3 undecidable manual S 113 18.9699 136 0.17 73
IV.AIO.HHE. 2015-07-23T04:18:49.25 0.1 undecidable manual P 230 45.2214 110 0.38 89
IV.NOV.HHZ. 2015-07-23T04:18:49.48 0.1 undecidable manual P 242 48.618 108 0.1 93
IV.MCSR.HHZ. 2015-07-23T04:18:48.05 0.1 undecidable manual P 242 39.5271 113 -0.01 97
IV.MSRU.HHZ. 2015-07-23T04:18:48.07 0.3 undecidable manual S 287 10.9779 152 0.09 76
IV.SOI.EHZ. 2015-07-23T04:18:48.21 0.1 undecidable manual P 116 41.2254 112 -0.09 95
IV.JOPP.HHN. 2015-07-23T04:18:48.98 0.1 undecidable manual P 28 47.0196 109 -0.15 93
IV.MSCL.HHZ. 2015-07-23T04:18:48.46 0.3 undecidable manual S 91 14.0748 145 0.04 76
IV.MILZ.HHZ. 2015-07-23T04:18:47.34 0.1 undecidable manual P 277 34.8429 117 -0.06 96
IV.MTTG.HHZ. 2015-07-23T04:18:46.43 0.1 undecidable manual P 166 26.4513 125 0.14 96
IV.MPNC.HHZ. 2015-07-23T04:18:46.23 0.1 undecidable manual P 248 25.9518 126 0 99
IV.GMB.BHZ. 2015-07-23T04:18:45.64 0.1 positive manual P 113 18.9699 136 0.23 96
IV.MSCL.HHZ. 2015-07-23T04:18:45.15 0.1 positive manual P 91 14.0748 145 0.22 97
IV.MSRU.HHZ. 2015-07-23T04:18:44.79 0.1 negative manual P 287 10.9779 152 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GMB.BHE. ML:1.6 0.00022 1.16 AML other m 2015-07-23T04:18:49.74
IV.GMB.BHN. ML:1.5 0.000165 0.52 AML other m 2015-07-23T04:18:49.84
IV.MCSR.HHE. ML:1.7 0.00014800000000000002 0.3 AML other m 2015-07-23T04:18:54.88
IV.MCSR.HHN. ML:1.8 0.00021050000000000002 0.32 AML other m 2015-07-23T04:18:55.24
IV.MILZ.HHN. ML:1.6 0.00015050000000000003 0.36 AML other m 2015-07-23T04:18:52.76
IV.MILZ.HHE. ML:1.3 0.0000658 0.3 AML other m 2015-07-23T04:18:54.04
IV.MPNC.HHE. ML:1.8 0.00029549999999999997 0.22 AML other m 2015-07-23T04:18:50.81
IV.MPNC.HHN. ML:1.9 0.0003085 1.06 AML other m 2015-07-23T04:18:50.79
IV.MSCL.HHN. ML:1.8 0.000397 0.48 AML other m 2015-07-23T04:18:48.85
IV.MSCL.HHE. ML:1.6 0.000209 0.86 AML other m 2015-07-23T04:18:48.88
IV.MSRU.HHN. ML:1.4 0.00015150000000000002 0.12 AML other m 2015-07-23T04:18:48.10
IV.MSRU.HHE. ML:1.4 0.00015999999999999999 0.26 AML other m 2015-07-23T04:18:49.02
IV.MTTG.HHE. ML:1.1 0.00005640000000000001 0.42 AML other m 2015-07-23T04:18:52.80
IV.MTTG.HHN. ML:1.1 0.0000544 0.56 AML other m 2015-07-23T04:18:51.37
IV.NOV.HHN. ML:1.2 0.00003265 1.56 AML other m 2015-07-23T04:18:58.31
IV.NOV.HHE. ML:1.3 0.0000452 1 AML other m 2015-07-23T04:18:57.83
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download