Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 27-03-2021 and time 18:42:13 (Italy) in region Adriatico Centrale (MARE)

A magnitude ML 2.4 earthquake occured in region: Adriatico Centrale (MARE), on

  • 27-03-2021 17:42:13 (UTC)
  • 27-03-2021 18:42:13 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6560, 16.2080 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.

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Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 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 2.4 2021-03-27
17:42:13		 42.6565 16.2083 10 2021-07-12
16:55:07		 Bollettino Sismico Italiano INGV 89325911
Reviewed
Rev100 		ML 2.5 2021-03-27
17:42:11		 42.8077 16.2422 10 2021-03-27
17:55:11		 Sala Sismica INGV-Roma 88528511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-27 17:42:13 ± 0.26
Latitude 42.6565 ± 0.0117
Longitude 16.2083 ± 0.0232
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89325911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1920
Semi-minor axis of confidence ellipse (meter) 1260
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 274
Circular confidence region, given by single value of horizontal uncertainty (meter) 1920.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 273
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.88318
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 89325911
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-07-09 10:52:24

ML:2.5

Field Value
Value 2.5
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 88528511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-27 17:55:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IMOL.HNZ. 2021-03-27T17:43:58.47 3.0 undecidable manual Sn 0.92 0
IV.GIZZ.HHZ. 2021-03-27T17:43:53.22 3.0 undecidable manual Sn -3.03 0
IV.CADC.HNZ. 2021-03-27T17:43:47.44 3.0 undecidable manual Pg 13.64 0
IV.TDS.HHZ. 2021-03-27T17:43:43.16 3.0 undecidable manual Sg 3.39 0
IV.HVIT.HHZ. 2021-03-27T17:43:41.36 3.0 undecidable manual Pn 0.45 0
IV.ERC.EHZ. 2021-03-27T17:43:40.41 3.0 undecidable manual Pn 5.5 0
IV.ESCV.HHZ. 2021-03-27T17:43:36.05 3.0 positive manual Pg 5.91 0
IV.FIR.HHZ. 2021-03-27T17:43:09.98 3.0 undecidable manual Pn -4.03 0
IV.ARVD.HHZ. 2021-03-27T17:42:53.41 3.0 positive manual Pn -3.45 0
IV.SENI.HNZ. 2021-03-27T17:42:53.58 3.0 negative manual Pn -1.78 0
IV.MELA.HHZ. 2021-03-27T17:42:53.79 0.6 undecidable manual S 220 137.9619 50 0.45 57
OT.OT07.EHZ. 2021-03-27T17:42:48.83 0.3 undecidable manual S 199 121.6893 50 -0.17 94
OT.OT05.EHZ. 2021-03-27T17:42:48.39 0.3 undecidable manual S 204 121.2897 50 -0.52 87
IV.T0110.HHZ. 2021-03-27T17:42:47.05 1.0 undecidable manual P 257 204.6396 38 0.97 17
IV.SNAL.HNE. 2021-03-27T17:42:47.19 1.0 undecidable manual P 204 209.0352 38 0.56 20
OT.OT12.EHZ. 2021-03-27T17:42:47.52 0.3 undecidable manual S 192 116.2947 50 -0.05 97
IV.APRC.HHZ. 2021-03-27T17:42:46.80 0.6 undecidable manual S 209 113.6973 50 -0.08 65
IV.SGRT.HHZ. 2021-03-27T17:42:45.12 0.3 undecidable manual S 201 107.115 50 0.02 100
IV.AMUR.HHN. 2021-03-27T17:42:45.85 0.6 undecidable manual P 170 196.7586 38 0.75 39
IV.MSAG.HHZ. 2021-03-27T17:42:45.19 0.3 undecidable manual S 193 107.6145 50 -0.05 99
IV.MIDA.HNZ. 2021-03-27T17:42:44.82 0.6 undecidable manual P 236 196.2591 38 -0.21 46
IV.TST02.HHE. 2021-03-27T17:42:41.76 0.6 undecidable manual P 244 168.7089 50 0.38 52
IV.MRVN.HHZ. 2021-03-27T17:42:41.60 0.6 undecidable manual P 180 176.9895 38 -1.04 38
OT.OT14.EHZ. 2021-03-27T17:42:40.91 0.6 undecidable manual S 196 87.8454 50 0.94 52
IV.CIGN.HHN. 2021-03-27T17:42:39.48 0.6 undecidable manual P 224 154.4343 50 0.3 56
OT.OT13.EHZ. 2021-03-27T17:42:39.93 0.6 undecidable manual S 182 86.0472 50 0.43 64
IV.MELA.HHZ. 2021-03-27T17:42:36.51 0.3 undecidable manual P 220 137.9619 50 -0.12 92
OT.OT12.EHZ. 2021-03-27T17:42:33.36 0.3 undecidable manual P 192 116.2947 50 0.05 97
OT.OT07.EHZ. 2021-03-27T17:42:33.95 0.3 undecidable manual P 199 121.6893 50 -0.18 94
OT.OT05.EHZ. 2021-03-27T17:42:33.50 0.6 undecidable manual P 204 121.2897 50 -0.58 57
OT.OT03.EHZ. 2021-03-27T17:42:33.17 0.3 undecidable manual P 204 114.3966 50 0.17 96
IV.MSAG.HHZ. 2021-03-27T17:42:32.01 0.3 undecidable manual P 193 107.6145 50 0.05 99
IV.APRC.HHZ. 2021-03-27T17:42:32.86 0.3 undecidable manual P 209 113.6973 50 -0.05 98
IV.SGRT.HHZ. 2021-03-27T17:42:31.48 0.3 undecidable manual P 201 107.115 50 -0.4 92
OT.OT13.EHZ. 2021-03-27T17:42:29.13 0.6 undecidable manual P 182 86.0472 50 0.48 63
OT.OT14.EHZ. 2021-03-27T17:42:28.70 0.3 undecidable manual P 196 87.8454 50 -0.22 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OT.OT13.EHE. ML:2.5 0.000361 0.26 AML other m 2021-03-27T17:42:42.50
OT.OT13.EHN. ML:2.6 0.000554 0.28 AML other m 2021-03-27T17:42:47.69
IV.SGRT.HHE. ML:2.4 0.00020500000000000002 0.24 AML other m 2021-03-27T17:42:47.81
IV.MSAG.HHE. ML:2.0 0.0000849 1.44 AML other m 2021-03-27T17:42:49.08
IV.MSAG.HNE. ML:2.4 0.000216 0.42 AML other m 2021-03-27T17:42:49.81
OT.OT12.EHE. ML:2.3 0.000144 0.3 AML other m 2021-03-27T17:42:50.31
IV.MSAG.HHN. ML:2.3 0.000179 0.3 AML other m 2021-03-27T17:42:50.96
IV.MSAG.HNN. ML:2.7 0.00042699999999999997 0.3 AML other m 2021-03-27T17:42:50.97
OT.OT12.EHN. ML:2.4 0.00017449999999999999 0.3 AML other m 2021-03-27T17:42:51.08
OT.OT05.EHE. ML:2.3 0.00013550000000000001 0.32 AML other m 2021-03-27T17:42:51.47
IV.APRC.HHE. ML:2.3 0.0001764396 0.32 AML other m 2021-03-27T17:42:52.70
IV.APRC.HHN. ML:2.4 0.000219 1.8 AML other m 2021-03-27T17:42:53.95
IV.SGRT.HHN. ML:2.3 0.00017277130000000002 1.1424 AML other m 2021-03-27T17:42:53.64
OT.OT05.EHN. ML:2.2 0.0001205 0.46 AML other m 2021-03-27T17:42:55.32
IV.MELA.HHN. ML:2.5 0.0002035 0.7 AML other m 2021-03-27T17:42:55.33
IV.MELA.HHE. ML:2.6 0.000243 0.42 AML other m 2021-03-27T17:42:57.68
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
Waveforms Seismic signals in miniseed + resp format Download