Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 27-09-2020 and time 08:20:34 (UTC) in region Costa Garganica (Foggia)

A magnitude ML 1.9 earthquake occured in region: Costa Garganica (Foggia), on

  • 27-09-2020 08:20:34 (UTC)
  • 27-09-2020 10:20:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.9240, 15.5830 at 8 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 Nicandro Garganico FG 10 15566 15566
Cagnano Varano FG 19 7330 22896
Apricena FG 19 13328 36224
Lesina FG 20 6410 42634

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NE of San Severo (53905 inhabitants)
43 Km NW of Manfredonia (57279 inhabitants)
51 Km N of Foggia (151991 inhabitants)
78 Km NW of Cerignola (58396 inhabitants)
89 Km NW of Barletta (94814 inhabitants)
98 Km NW of Andria (100440 inhabitants)
100 Km NW of Trani (56217 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 2020-09-27
08:20:34		 41.9237 15.583 8 2021-02-26
14:56:01		 Bollettino Sismico Italiano INGV 84239871
Reviewed
Rev100 		ML 1.9 2020-09-27
08:20:34		 41.9262 15.5775 10 2020-09-27
08:24:57		 Sala Sismica INGV-Roma 83294071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-27 08:20:34 ± 0.09
Latitude 41.9237 ± 0.0036
Longitude 15.5830 ± 0.0073
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84239871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 540
Semi-minor axis of confidence ellipse (meter) 326
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 241
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) 110
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) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.16907
Epicentral distance of station farthest from the epicenter (degree) 1.04681
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
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 84239871
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-28 09:46:34

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 83294071
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-27 08:24:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LPEL.HHZ. 2020-09-27T08:20:54.79 0.3 undecidable manual P 277 116.1948 50 0.49 57
OT.OT13.EHN. 2020-09-27T08:20:51.36 0.6 undecidable manual S 95 49.5171 50 0.47 44
IV.MELA.HHZ. 2020-09-27T08:20:49.66 0.6 undecidable manual S 237 44.8218 50 0.02 49
IV.MSAG.HHZ. 2020-09-27T08:20:47.05 0.3 undecidable manual S 131 35.742 50 -0.19 72
IV.CIGN.HHN. 2020-09-27T08:20:46.25 0.6 undecidable manual P 242 63.5919 50 0.07 46
OT.OT06.EHZ. 2020-09-27T08:20:44.40 0.3 undecidable manual S 178 26.4513 107 0.19 73
OT.OT05.EHZ. 2020-09-27T08:20:44.59 0.3 undecidable manual S 177 29.3484 106 -0.6 65
OT.OT03.EHE. 2020-09-27T08:20:43.35 0.1 undecidable manual S 167 24.0537 109 -0.09 100
OT.OT13.EHN. 2020-09-27T08:20:43.71 1.0 undecidable manual P 95 49.5171 50 -0.29 23
IV.MELA.HHZ. 2020-09-27T08:20:43.03 0.3 undecidable manual P 237 44.8218 50 -0.25 69
IV.SGRT.HHZ. 2020-09-27T08:20:43.32 0.3 undecidable manual S 145 22.9548 110 0.25 72
IV.TREM.HHZ. 2020-09-27T08:20:42.86 0.6 undecidable manual S 345 22.8549 110 -0.18 49
OT.OT04.EHE. 2020-09-27T08:20:42.80 0.6 undecidable manual S 180 22.6551 110 -0.16 49
IV.APRC.HHZ. 2020-09-27T08:20:41.86 0.6 undecidable manual S 190 18.7701 114 0.16 49
IV.MSAG.HHZ. 2020-09-27T08:20:41.73 0.1 undecidable manual P 131 35.742 50 -0.17 96
OT.OT05.EHZ. 2020-09-27T08:20:40.33 0.1 undecidable manual P 177 29.3484 106 -0.38 93
OT.OT06.EHZ. 2020-09-27T08:20:40.30 0.3 undecidable manual P 178 26.4513 107 0.16 73
OT.OT03.EHE. 2020-09-27T08:20:39.77 0.3 undecidable manual P 167 24.0537 109 0.07 75
IV.SGRT.HHZ. 2020-09-27T08:20:39.56 0.1 undecidable manual P 145 22.9548 110 0.07 100
IV.APRC.HHZ. 2020-09-27T08:20:39.02 0.1 undecidable manual P 190 18.7701 114 0.32 96
IV.TREM.HHZ. 2020-09-27T08:20:39.35 0.1 undecidable manual P 345 22.8549 110 -0.12 99
OT.OT04.EHE. 2020-09-27T08:20:39.69 0.3 undecidable manual P 180 22.6551 110 0.26 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.APRC.HHE. ML:2.0 0.0008135 0.46 AML other m 2020-09-27T08:20:42.53
IV.TREM.HHN. ML:2.1 0.000903 0.28 AML other m 2020-09-27T08:20:43.01
IV.TREM.HNN. ML:2.1 0.000855 0.26 AML other m 2020-09-27T08:20:43.01
IV.TREM.HHE. ML:2.1 0.0008585 0.52 AML other m 2020-09-27T08:20:43.32
IV.TREM.HNE. ML:2.1 0.0009135 0.54 AML other m 2020-09-27T08:20:43.05
IV.APRC.HHN. ML:1.9 0.0007099999999999999 0.54 AML other m 2020-09-27T08:20:43.91
IV.SGRT.HHE. ML:1.7 0.00033850000000000004 0.24 AML other m 2020-09-27T08:20:43.70
IV.SGRT.HHN. ML:1.6 0.0002635 0.7 AML other m 2020-09-27T08:20:43.59
OT.OT05.EHE. ML:1.6 0.00020899999999999998 0.36 AML other m 2020-09-27T08:20:45.30
OT.OT05.EHN. ML:1.7 0.0002375 1.34 AML other m 2020-09-27T08:20:45.78
IV.MSAG.HHE. ML:1.4 0.00009405 0.54 AML other m 2020-09-27T08:20:48.45
IV.MSAG.HHN. ML:1.7 0.000193 0.78 AML other m 2020-09-27T08:20:51.25
IV.MELA.HHN. ML:2.0 0.000332 0.88 AML other m 2020-09-27T08:20:52.07
IV.MELA.HHE. ML:2.1 0.000343 1.48 AML other m 2020-09-27T08:20:52.81
IV.LPEL.HHE. ML:2.2 0.00011499999999999999 0.78 AML other m 2020-09-27T08:21:13.38
IV.LPEL.HHN. ML:2.1 0.0001055 0.28 AML other m 2020-09-27T08:21:14.18
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