Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 16-04-2021 and time 06:33:29 (UTC) in region Stretto di Messina (Reggio di Calabria, Messina)

A magnitude ML 1.8 earthquake occured in region: Stretto di Messina (Reggio di Calabria, Messina), on

  • 16-04-2021 06:33:29 (UTC)
  • 16-04-2021 08:33:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.2990, 15.5770 at 55 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 10 13784 13784
Campo Calabro RC 12 4536 18320
Messina ME 12 238439 256759
Scilla RC 13 4964 261723
Fiumara RC 14 1018 262741
Villafranca Tirrena ME 14 8584 271325
Saponara ME 17 3988 275313
San Roberto RC 17 1750 277063
Calanna RC 18 934 277997
Spadafora ME 20 5021 283018
Bagnara Calabra RC 20 10255 293273
Rometta ME 20 6650 299923
Laganadi RC 20 413 300336

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km N of Messina (238439 inhabitants)
22 Km N of Reggio di Calabria (183035 inhabitants)
84 Km NE of Acireale (52622 inhabitants)
98 Km NE of Catania (314555 inhabitants)
99 Km SW of Lamezia Terme (70714 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 2021-04-16
06:33:29		 38.2988 15.5768 55 2021-07-12
16:55:07		 Bollettino Sismico Italiano INGV 89348751
Reviewed
Rev100 		ML 1.8 2021-04-16
06:33:29		 38.3023 15.5698 56 2021-04-16
06:44:09		 Sala Sismica INGV-Roma 89135531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-16 06:33:29 ± 0.16
Latitude 38.2988 ± 0.0099
Longitude 15.5768 ± 0.0092
Depth (km) 55 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89348751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 875
Semi-minor axis of confidence ellipse (meter) 814
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 338
Circular confidence region, given by single value of horizontal uncertainty (meter) 880.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.69158
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 89348751
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-22 05:46:30

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 89135531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-16 06:44:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MTGR.HHZ. 2021-04-16T06:34:30.99 3.0 undecidable manual Sn -0.62 0
IV.PIPA.HHZ. 2021-04-16T06:34:15.12 3.0 undecidable manual Sn 0.24 0
IV.AIO.HHZ. 2021-04-16T06:33:49.31 0.6 undecidable manual S 220 47.1195 130 0.65 40
IV.SOI.EHZ. 2021-04-16T06:33:48.73 0.1 undecidable manual S 121 48.618 129 -0.17 90
IV.JOPP.HHZ. 2021-04-16T06:33:48.48 0.3 undecidable manual S 38 43.4232 133 0.42 65
IV.MTTG.HHZ. 2021-04-16T06:33:47.51 0.6 undecidable manual S 162 34.5432 141 0.77 39
IV.SPS2.HHZ. 2021-04-16T06:33:47.77 3.0 undecidable manual Pn -2.31 0
IV.MILZ.HHZ. 2021-04-16T06:33:46.07 0.3 undecidable manual S 264 30.2475 145 -0.11 71
IV.MPNC.HHZ. 2021-04-16T06:33:45.77 0.6 undecidable manual S 229 25.8519 149 0.1 48
MN.CEL.HHZ. 2021-04-16T06:33:45.74 0.6 undecidable manual S 99 27.9498 147 -0.17 47
IV.SICLA.EHZ. 2021-04-16T06:33:44.61 0.3 undecidable manual S 111 12.876 164 0.06 75
IV.MSRU.HHZ. 2021-04-16T06:33:44.27 0.3 undecidable manual S 237 7.0929 171 -0.01 75
IV.PLAC.HHZ. 2021-04-16T06:33:43.96 0.1 undecidable manual P 77 76.7676 113 0.22 85
IV.IVUG.HHZ. 2021-04-16T06:33:41.09 0.1 undecidable manual P 282 52.503 126 -0.02 93
IV.JOPP.HHZ. 2021-04-16T06:33:40.37 0.1 undecidable manual P 38 43.4232 133 0.14 92
IV.AIO.HHZ. 2021-04-16T06:33:40.66 0.1 undecidable manual P 220 47.1195 130 0.08 93
IV.SOI.EHZ. 2021-04-16T06:33:40.36 0.1 undecidable manual P 121 48.618 129 -0.36 87
IV.MTTG.HHZ. 2021-04-16T06:33:39.46 0.1 undecidable manual P 162 34.5432 141 -0.01 96
MN.CEL.HHZ. 2021-04-16T06:33:38.94 0.1 undecidable manual P 99 27.9498 147 -0.05 97
IV.MSRU.HHZ. 2021-04-16T06:33:38.00 0.1 positive manual P 237 7.0929 171 -0.05 100
IV.MILZ.HHZ. 2021-04-16T06:33:38.92 0.1 undecidable manual P 264 30.2475 145 -0.23 93
IV.SICLA.EHZ. 2021-04-16T06:33:38.15 0.1 undecidable manual P 111 12.876 164 -0.06 99
IV.MPNC.HHZ. 2021-04-16T06:33:38.53 0.1 undecidable manual P 229 25.8519 149 -0.32 92
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SICLA.EHN. ML:2.2 0.000323 0.12 AML other m 2021-04-16T06:33:44.81
IV.MSRU.HHN. ML:2.0 0.0002667359 0.2784 AML other m 2021-04-16T06:33:45.56
IV.MILZ.HHN. ML:1.9 0.00014782165 0.0992 AML other m 2021-04-16T06:33:46.29
IV.MSRU.HHE. ML:2.1 0.0002793697 0.24 AML other m 2021-04-16T06:33:46.44
IV.MILZ.HHE. ML:2.1 0.00023902829999999998 0.2592 AML other m 2021-04-16T06:33:46.69
IV.SICLA.EHE. ML:2.0 0.000256 0.3 AML other m 2021-04-16T06:33:46.72
IV.MPNC.HHE. ML:2.0 0.00020600000000000002 0.36 AML other m 2021-04-16T06:33:46.72
IV.MPNC.HHN. ML:2.0 0.0002165 0.24 AML other m 2021-04-16T06:33:47.25
MN.CEL.HHN. ML:1.9 0.000151 0.32 AML other m 2021-04-16T06:33:48.42
MN.CEL.HNN. ML:1.8 0.00014496475 0.3008 AML other m 2021-04-16T06:33:48.52
IV.JOPP.HHN. ML:1.7 0.00009075 0.18 AML other m 2021-04-16T06:33:49.32
MN.CEL.HNE. ML:1.8 0.00013156048 0.4192 AML other m 2021-04-16T06:33:49.91
IV.MTTG.HHN. ML:2.1 0.0002155 1.28 AML other m 2021-04-16T06:33:49.09
IV.JOPP.HHE. ML:1.7 0.000083843745 0.1376 AML other m 2021-04-16T06:33:49.85
MN.CEL.HHE. ML:1.7 0.00009748445 1.76 AML other m 2021-04-16T06:33:50.90
IV.SOI.EHE. ML:1.4 0.00004180549 0.3776 AML other m 2021-04-16T06:33:50.72
IV.MTTG.HHE. ML:2.1 0.00024349999999999998 0.52 AML other m 2021-04-16T06:33:50.61
IV.AIO.HHE. ML:1.5 0.00005503345 0.2784 AML other m 2021-04-16T06:33:51.15
IV.AIO.HHN. ML:1.6 0.00006400800500000001 0.24 AML other m 2021-04-16T06:33:52.51
IV.SOI.EHN. ML:1.5 0.000051084674999999994 1.7024 AML other m 2021-04-16T06:33:52.12
IV.PLAC.HHE. ML:1.6 0.000039766565000000004 0.4192 AML other m 2021-04-16T06:33:57.91
IV.PLAC.HNN. ML:1.6 0.000045129645000000006 0.8 AML other m 2021-04-16T06:34:05.58
IV.PLAC.HHN. ML:1.4 0.000030492930000000003 1.0592 AML other m 2021-04-16T06:34:05.19
IV.PLAC.HNE. ML:1.7 0.00005239525 0.8608 AML other m 2021-04-16T06:34:08.54
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