Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 28-05-2021 and time 12:32:07 (UTC) in region 4 km E San Marco in Lamis (FG)

A magnitude ML 1.9 earthquake occured in region: 4 km E San Marco in Lamis (FG), on

  • 28-05-2021 12:32:07 (UTC)
  • 28-05-2021 14:32:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.7000, 15.6790 at 20 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
San Marco in Lamis FG 4 13831 13831
San Giovanni Rotondo FG 4 27184 41015
Rignano Garganico FG 8 2117 43132
Cagnano Varano FG 16 7330 50462
San Nicandro Garganico FG 18 15566 66028

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km W of Manfredonia (57279 inhabitants)
25 Km E of San Severo (53905 inhabitants)
29 Km NE of Foggia (151991 inhabitants)
52 Km NW of Cerignola (58396 inhabitants)
65 Km NW of Barletta (94814 inhabitants)
74 Km NW of Andria (100440 inhabitants)
78 Km NW of Trani (56217 inhabitants)
85 Km NW of Bisceglie (55422 inhabitants)
95 Km NW of Molfetta (59874 inhabitants)
98 Km NE of Benevento (60091 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 1.9 2021-05-28
12:32:07		 41.7003 15.6792 20 2021-12-29
11:12:17		 Bollettino Sismico Italiano INGV 93581021
Reviewed
Rev100 		ML 1.8 2021-05-28
12:32:07		 41.699 15.6803 20 2021-05-28
12:44:51		 Sala Sismica INGV-Roma 90564711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-28 12:32:07 ± 0.11
Latitude 41.7003 ± 0.0063
Longitude 15.6792 ± 0.0036
Depth (km) 20 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 93581021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 580
Semi-minor axis of confidence ellipse (meter) 424
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 184
Circular confidence region, given by single value of horizontal uncertainty (meter) 580.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.58006
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 93581021
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-08-02 23:25:13

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 90564711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-28 12:44:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
ST.RONC.EHZ. 2021-05-28T12:33:10.32 3.0 undecidable manual Sn 3.15 0
IV.GIZZ.HHZ. 2021-05-28T12:33:10.25 3.0 undecidable manual Sg 15.8 0
IV.ESCV.HHZ. 2021-05-28T12:33:07.44 3.0 undecidable manual Sn -1.07 0
IV.CAGR.HHZ. 2021-05-28T12:33:05.12 3.0 undecidable manual Sn -4.62 0
IV.TDS.HHZ. 2021-05-28T12:32:40.69 3.0 undecidable manual Sn -3.2 0
IV.LINA.HHZ. 2021-05-28T12:32:31.38 3.0 undecidable manual Pn -6.37 0
OX.CIMO.HHZ. 2021-05-28T12:32:30.26 3.0 negative manual Pg 15.81 0
IV.HVIT.HHZ. 2021-05-28T12:32:27.69 3.0 negative manual Pn 3.39 0
AC.VLO.HHZ. 2021-05-28T12:32:23.44 3.0 undecidable manual Pn -1.39 0
OT.OT13.EHZ. 2021-05-28T12:32:22.27 0.3 undecidable manual S 64 45.9207 105 0.03 71
IV.MELA.HNE. 2021-05-28T12:32:22.64 0.3 undecidable manual S 271 45.7209 105 0.46 66
OT.OT16.EHE. 2021-05-28T12:32:21.82 0.6 undecidable manual S 290 44.622 106 -0.08 47
IV.CIGN.HHN. 2021-05-28T12:32:19.01 0.3 undecidable manual P 266 64.3911 100 0.37 65
OT.OT14.EHZ. 2021-05-28T12:32:17.87 0.3 undecidable manual S 41 28.749 117 -0.08 73
SI.BOSI.HHZ. 2021-05-28T12:32:17.81 3.0 undecidable manual Pn -1.06 0
IV.MCPD.HHZ. 2021-05-28T12:32:16.37 3.0 positive manual Pg 6.32 0
OT.OT12.EHZ. 2021-05-28T12:32:16.01 0.6 undecidable manual S 112 20.4684 128 -0.04 50
IV.MSAG.HHZ. 2021-05-28T12:32:16.04 0.6 undecidable manual S 86 19.1697 130 0.26 47
IV.MELA.HNE. 2021-05-28T12:32:15.86 0.3 undecidable manual P 271 45.7209 105 0.01 72
OT.OT16.EHE. 2021-05-28T12:32:15.18 0.6 undecidable manual P 290 44.622 106 -0.5 43
OT.OT13.EHZ. 2021-05-28T12:32:15.77 0.1 undecidable manual P 64 45.9207 105 -0.11 93
IV.SGRT.HHZ. 2021-05-28T12:32:14.08 0.3 undecidable manual S 42 8.0808 155 0.12 74
IV.APRC.HHZ. 2021-05-28T12:32:14.50 0.3 undecidable manual S 299 12.876 143 -0.13 74
OT.OT14.EHZ. 2021-05-28T12:32:13.34 0.1 undecidable manual P 41 28.749 117 -0.06 97
OT.OT05.EHZ. 2021-05-28T12:32:13.92 0.3 undecidable manual S 234 7.7811 156 -0.01 77
IV.MSAG.HHZ. 2021-05-28T12:32:12.21 0.1 undecidable manual P 86 19.1697 130 0.06 99
OT.OT12.EHZ. 2021-05-28T12:32:12.19 0.1 undecidable manual P 112 20.4684 128 -0.11 97
IV.SGRT.HHZ. 2021-05-28T12:32:11.19 0.1 undecidable manual P 42 8.0808 155 0.1 100
IV.APRC.HHZ. 2021-05-28T12:32:11.40 0.1 undecidable manual P 299 12.876 143 -0.08 100
OT.OT05.EHZ. 2021-05-28T12:32:10.91 0.1 undecidable manual P 234 7.7811 156 -0.17 99
IV.PLLN.EHZ. 2021-05-28T12:32:09.72 3.0 positive manual Pn -0.3 0
IV.CADC.HNZ. 2021-05-28T12:32:09.37 3.0 undecidable manual Pn -0.9 0
IV.ORZI.HHZ. 2021-05-28T12:32:08.48 3.0 negative manual Pn -2.25 0
IV.IFIL.HHZ. 2021-05-28T12:32:07.26 3.0 negative manual Pn 3.52 0
IV.TEOL.HHZ. 2021-05-28T12:32:04.80 3.0 undecidable manual Pn 1.83 0
IV.BDI.HHZ. 2021-05-28T12:31:54.12 3.0 negative manual Pn 2.04 0
RD.PGF.BHZ. 2021-05-28T12:31:52.90 3.0 undecidable manual Pn -2.99 0
IV.ZCCA.HHZ. 2021-05-28T12:31:50.06 3.0 undecidable manual Pn -2.96 0
IV.TERO.HHZ. 2021-05-28T12:31:40.41 3.0 undecidable manual S 2.98 0
IV.IFOR.HHZ. 2021-05-28T12:31:32.77 3.0 undecidable manual Pn -0.85 0
IV.PTRJ.HHZ. 2021-05-28T12:31:30.97 3.0 undecidable manual P -1.19 0
IV.CSP1.EHZ. 2021-05-28T12:31:30.75 3.0 positive manual P 0.57 0
IV.ASSB.HHZ. 2021-05-28T12:31:29.06 3.0 undecidable manual P -0.63 0
IV.FDMO.HHZ. 2021-05-28T12:31:28.96 3.0 undecidable manual P -0.16 0
IV.CESI.HHZ. 2021-05-28T12:31:27.23 3.0 undecidable manual P -1.29 0
IV.LNSS.HHZ. 2021-05-28T12:31:20.70 3.0 undecidable manual P -0.36 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OT.OT05.EHN. ML:1.9 0.0006955 0.14 AML other m 2021-05-28T12:32:14.08
OT.OT05.EHE. ML:1.9 0.0006715347499999999 0.1216 AML other m 2021-05-28T12:32:14.25
IV.SGRT.HHN. ML:1.7 0.000357 0.16 AML other m 2021-05-28T12:32:14.25
IV.SGRT.HHE. ML:1.6 0.0002905375 0.1216 AML other m 2021-05-28T12:32:14.66
IV.APRC.HHN. ML:2.0 0.0006485000000000001 0.1 AML other m 2021-05-28T12:32:15.06
IV.APRC.HHE. ML:1.8 0.00044699305 0.0768 AML other m 2021-05-28T12:32:15.37
IV.APRC.HNE. ML:1.9 0.0004881146 0.1472 AML other m 2021-05-28T12:32:15.37
OT.OT12.EHE. ML:1.6 0.00024172545 0.1152 AML other m 2021-05-28T12:32:16.35
OT.OT12.EHN. ML:2.0 0.0006000844000000001 0.1216 AML other m 2021-05-28T12:32:16.47
IV.MSAG.HHE. ML:1.2 0.0000791438 0.1536 AML other m 2021-05-28T12:32:16.70
IV.MSAG.HNE. ML:1.5 0.00018106844999999999 0.1024 AML other m 2021-05-28T12:32:16.86
IV.MSAG.HNN. ML:2.1 0.0006558511 0.16 AML other m 2021-05-28T12:32:17.09
IV.MSAG.HHN. ML:1.7 0.0002871185 0.16 AML other m 2021-05-28T12:32:17.09
IV.APRC.HNN. ML:2.2 0.001228242 1.1488 AML other m 2021-05-28T12:32:23.86
OT.OT13.EHE. ML:1.9 0.00022279135 0.1216 AML other m 2021-05-28T12:32:23.34
OT.OT13.EHN. ML:2.2 0.00039400000000000004 0.12 AML other m 2021-05-28T12:32:23.87
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