Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 09-05-2021 and time 03:58:20 (UTC) in region Costa Siciliana nord orientale (Messina)

A magnitude ML 1.8 earthquake occured in region: Costa Siciliana nord orientale (Messina), on

  • 09-05-2021 03:58:20 (UTC)
  • 09-05-2021 05:58:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.3800, 15.3660 at 112 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
Villafranca Tirrena ME 17 8584 8584
Spadafora ME 18 5021 13605
Venetico ME 18 3911 17516

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Messina (238439 inhabitants)
39 Km NW of Reggio di Calabria (183035 inhabitants)
87 Km N of Acireale (52622 inhabitants)
101 Km N 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 1.8 2021-05-09
03:58:20		 38.3803 15.3663 113 2021-12-29
11:12:05		 Bollettino Sismico Italiano INGV 91308251
Reviewed
Rev100 		ML 1.8 2021-05-09
03:58:19		 38.4655 15.4528 116 2021-05-09
04:05:24		 Sala Sismica INGV-Roma 89931691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-09 03:58:20 ± 0.26
Latitude 38.3803 ± 0.0153
Longitude 15.3663 ± 0.0172
Depth (km) 113 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91308251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1588
Semi-minor axis of confidence ellipse (meter) 1253
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 150
Circular confidence region, given by single value of horizontal uncertainty (meter) 1590.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.15199
Epicentral distance of station farthest from the epicenter (degree) 1.35438
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 89931691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-09 04:05:24

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 91308251
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-08-08 22:39:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CELI.HHE. 2021-05-09T03:59:05.39 0.6 undecidable manual S 41 150.3384 122 0.66 34
IV.SERS.HNN. 2021-05-09T03:59:03.08 0.6 undecidable manual S 57 135.5643 125 0.99 31
IV.SELL.HHZ. 2021-05-09T03:59:02.21 0.6 undecidable manual S 58 128.0718 127 1.43 25
IV.SPS2.HHE. 2021-05-09T03:59:01.35 0.6 undecidable manual S 39 131.3685 126 -0.01 42
IV.GIZZ.HHZ. 2021-05-09T03:58:55.86 0.6 undecidable manual S 47 98.6235 135 -0.12 44
IV.PLAC.HHZ. 2021-05-09T03:58:55.38 0.6 undecidable manual S 85 93.5397 137 0.18 44
IV.SOI.EHZ. 2021-05-09T03:58:51.90 0.6 undecidable manual S 119 68.9754 146 0.03 48
IV.MTTG.HHZ. 2021-05-09T03:58:50.84 0.6 undecidable manual S 145 50.9157 153 0.94 37
IV.JOPP.HHZ. 2021-05-09T03:58:49.61 0.6 undecidable manual S 61 51.6039 153 -0.35 46
MN.CEL.HHZ. 2021-05-09T03:58:49.77 0.6 undecidable manual S 106 47.8188 155 0.17 48
IV.MSRU.HHE. 2021-05-09T03:58:47.74 0.6 undecidable manual S 136 17.871 170 0.09 51
IV.SICLA.EHE. 2021-05-09T03:58:47.62 0.6 undecidable manual S 114 33.2445 162 -0.83 40
IV.CELI.HHE. 2021-05-09T03:58:46.06 0.3 undecidable manual P 41 150.3384 122 0.12 59
IV.CET2.HHZ. 2021-05-09T03:58:44.48 0.3 undecidable manual P 22 137.1627 125 -0.09 61
IV.SERS.HNN. 2021-05-09T03:58:44.37 0.1 undecidable manual P 57 135.5643 125 -0.05 83
IV.SELL.HHZ. 2021-05-09T03:58:43.76 0.6 undecidable manual P 58 128.0718 127 0.1 42
IV.SPS2.HHE. 2021-05-09T03:58:43.65 0.6 undecidable manual P 39 131.3685 126 -0.34 39
IV.GIZZ.HHZ. 2021-05-09T03:58:40.73 0.3 undecidable manual P 47 98.6235 135 -0.16 66
IV.PLAC.HHZ. 2021-05-09T03:58:40.25 0.3 undecidable manual P 85 93.5397 137 -0.19 66
IV.EPIT.HHZ. 2021-05-09T03:58:39.16 0.3 undecidable manual P 203 68.6757 146 0.67 60
IV.IFIL.HHZ. 2021-05-09T03:58:38.87 0.3 undecidable manual P 287 71.6727 144 0.16 69
IV.SOI.EHZ. 2021-05-09T03:58:38.19 0.1 positive manual P 119 68.9754 146 -0.32 89
IV.NOV.HHE. 2021-05-09T03:58:37.68 0.1 undecidable manual P 207 43.9227 157 0.67 84
IV.JOPP.HHZ. 2021-05-09T03:58:37.03 0.1 positive manual P 61 51.6039 153 -0.38 91
IV.AIO.HHZ. 2021-05-09T03:58:37.60 0.3 undecidable manual P 194 46.8198 155 0.45 68
IV.MTTG.HHZ. 2021-05-09T03:58:37.34 0.1 positive manual P 145 50.9157 153 -0.04 98
IV.IVUG.HHZ. 2021-05-09T03:58:36.63 0.1 undecidable manual P 273 33.1446 162 0.1 100
IV.MPNC.HHZ. 2021-05-09T03:58:36.06 0.3 undecidable manual P 183 25.9518 166 -0.22 74
IV.SICLA.EHE. 2021-05-09T03:58:36.09 0.1 undecidable manual P 114 33.2445 162 -0.45 93
IV.IVPL.HHZ. 2021-05-09T03:58:36.68 0.1 positive manual P 269 33.5442 162 0.13 99
MN.CEL.HHZ. 2021-05-09T03:58:36.84 0.3 undecidable manual P 106 47.8188 155 -0.36 69
IV.MSRU.HHE. 2021-05-09T03:58:35.62 0.1 undecidable manual P 136 17.871 170 -0.46 96
IV.MILZ.HHZ. 2021-05-09T03:58:35.80 0.1 undecidable manual P 224 16.872 171 -0.25 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTTG.HHE. ML:1.7 0.0000369 1.48 AML other m 2021-05-09T03:58:51.15
MN.CEL.HHN. ML:1.9 0.0000554 0.46 AML other m 2021-05-09T03:58:52.35
IV.SOI.EHE. ML:1.6 0.00002685 1.58 AML other m 2021-05-09T03:58:52.90
MN.CEL.HHE. ML:1.7 0.000036750000000000006 0.42 AML other m 2021-05-09T03:58:53.47
IV.SOI.EHN. ML:1.7 0.00002755 0.9 AML other m 2021-05-09T03:58:53.49
IV.MTTG.HHN. ML:1.9 0.0000553 0.74 AML other m 2021-05-09T03:58:54.18
IV.PLAC.HHE. ML:1.9 0.00004455 0.64 AML other m 2021-05-09T03:58:56.21
IV.PLAC.HHN. ML:2.0 0.000051699999999999996 0.34 AML other m 2021-05-09T03:58:56.55
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