Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 15-04-2021 and time 10:53:54 (Italy) in region 2 km NE Rignano Garganico (FG)

A magnitude ML 1.4 earthquake occured in region: 2 km NE Rignano Garganico (FG), on

  • 15-04-2021 08:53:54 (UTC)
  • 15-04-2021 10:53:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.6950, 15.6000 at 21 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
Rignano Garganico FG 2 2117 2117
San Marco in Lamis FG 4 13831 15948
San Giovanni Rotondo FG 11 27184 43132
San Nicandro Garganico FG 16 15566 58698
Apricena FG 17 13328 72026
San Severo FG 18 53905 125931

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km E of San Severo (53905 inhabitants)
26 Km N of Foggia (151991 inhabitants)
28 Km W of Manfredonia (57279 inhabitants)
54 Km NW of Cerignola (58396 inhabitants)
70 Km NW of Barletta (94814 inhabitants)
78 Km NW of Andria (100440 inhabitants)
83 Km NW of Trani (56217 inhabitants)
91 Km NW of Bisceglie (55422 inhabitants)
93 Km NE of Benevento (60091 inhabitants)
100 Km NW of Molfetta (59874 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 1.4 2021-04-15
08:53:54		 41.6947 15.5998 21 2021-07-12
16:55:11		 Bollettino Sismico Italiano INGV 90200591
Reviewed
Rev100 		ML 1.5 2021-04-15
08:53:54		 41.6938 15.6003 19 2021-04-15
08:57:42		 Sala Sismica INGV-Roma 89113251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-15 08:53:54 ± 0.1
Latitude 41.6947 ± 0.0054
Longitude 15.5998 ± 0.0048
Depth (km) 21 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90200591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 539
Semi-minor axis of confidence ellipse (meter) 194
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 359
Circular confidence region, given by single value of horizontal uncertainty (meter) 540.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
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) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00989
Epicentral distance of station farthest from the epicenter (degree) 0.35253
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 89113251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-15 08:57:42

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 90200591
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-17 14:47:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MELA.HHZ. 2021-04-15T08:54:08.55 0.6 undecidable manual S 272 39.1275 110 0.42 43
OT.OT14.EHZ. 2021-04-15T08:54:06.58 0.3 undecidable manual S 48 33.8439 114 -0.23 67
OT.OT12.EHZ. 2021-04-15T08:54:05.10 0.3 undecidable manual S 105 26.4513 121 0.04 71
IV.MSAG.HHZ. 2021-04-15T08:54:05.04 0.3 undecidable manual S 86 25.752 122 0.15 70
IV.SGRT.HHZ. 2021-04-15T08:54:02.46 0.3 undecidable manual S 61 13.6752 143 -0.02 73
IV.MELA.HHZ. 2021-04-15T08:54:02.40 0.1 undecidable manual P 272 39.1275 110 -0.06 93
OT.OT07.EHE. 2021-04-15T08:54:02.49 0.3 undecidable manual S 129 12.7761 144 0.14 71
IV.APRC.HHZ. 2021-04-15T08:54:01.69 0.6 undecidable manual S 326 8.3805 155 -0.07 49
OT.OT03.EHE. 2021-04-15T08:54:01.64 0.3 undecidable manual S 65 4.5954 166 0.22 71
OT.OT14.EHZ. 2021-04-15T08:54:01.95 0.3 undecidable manual P 48 33.8439 114 0.25 68
OT.OT06.EHZ. 2021-04-15T08:54:01.42 0.3 undecidable manual S 204 1.0989 177 0.14 73
OT.OT04.EHE. 2021-04-15T08:54:01.33 0.3 undecidable manual S 330 3.1968 170 -0.01 75
OT.OT05.EHZ. 2021-04-15T08:54:01.05 0.3 undecidable manual S 177 3.8961 168 -0.33 70
OT.OT12.EHZ. 2021-04-15T08:54:00.56 0.3 undecidable manual P 105 26.4513 121 -0.12 70
IV.MSAG.HHZ. 2021-04-15T08:54:00.62 0.1 undecidable manual P 86 25.752 122 0.03 95
OT.OT07.EHE. 2021-04-15T08:53:59.14 0.1 negative manual P 129 12.7761 144 0.02 98
IV.SGRT.HHZ. 2021-04-15T08:53:59.24 0.1 negative manual P 61 13.6752 143 0.04 97
OT.OT05.EHZ. 2021-04-15T08:53:58.27 0.1 positive manual P 177 3.8961 168 -0.29 94
IV.APRC.HHZ. 2021-04-15T08:53:58.67 0.1 positive manual P 326 8.3805 155 -0.11 97
OT.OT03.EHE. 2021-04-15T08:53:58.65 0.1 undecidable manual P 65 4.5954 166 0.06 98
OT.OT06.EHZ. 2021-04-15T08:53:58.51 0.1 negative manual P 204 1.0989 177 0 100
OT.OT04.EHE. 2021-04-15T08:53:58.50 0.1 undecidable manual P 330 3.1968 170 -0.04 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OT.OT05.EHE. ML:1.4 0.00019809310000000002 0.1216 AML other m 2021-04-15T08:54:01.63
OT.OT05.EHN. ML:1.2 0.00013112180000000002 0.1984 AML other m 2021-04-15T08:54:01.36
IV.APRC.HHN. ML:1.8 0.0004255 0.1 AML other m 2021-04-15T08:54:02.42
IV.APRC.HHE. ML:1.4 0.0001891812 0.1408 AML other m 2021-04-15T08:54:02.43
IV.SGRT.HHE. ML:1.7 0.0003175 0.16 AML other m 2021-04-15T08:54:02.65
IV.SGRT.HHN. ML:1.6 0.0002665 0.08 AML other m 2021-04-15T08:54:02.75
IV.APRC.HNE. ML:1.4 0.0001743178 0.1408 AML other m 2021-04-15T08:54:02.43
IV.MSAG.HHE. ML:0.9 0.00003622163 0.16 AML other m 2021-04-15T08:54:05.16
IV.MSAG.HHN. ML:1.2 0.000066251635 0.1408 AML other m 2021-04-15T08:54:05.91
IV.MSAG.HNN. ML:1.6 0.0001587581 0.1216 AML other m 2021-04-15T08:54:05.91
IV.MSAG.HNE. ML:1.4 0.00010349550999999999 0.1792 AML other m 2021-04-15T08:54:05.17
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