Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 23-10-2020 and time 22:22:17 (Italy) in region 14 km S San Giovanni Rotondo (FG)

A magnitude ML 1.0 earthquake occured in region: 14 km S San Giovanni Rotondo (FG), on

  • 23-10-2020 20:22:17 (UTC)
  • 23-10-2020 22:22:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.5860, 15.7260 at 16 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 Giovanni Rotondo FG 14 27184 27184
Rignano Garganico FG 15 2117 29301
San Marco in Lamis FG 16 13831 43132
Manfredonia FG 17 57279 100411

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km W of Manfredonia (57279 inhabitants)
20 Km NE of Foggia (151991 inhabitants)
31 Km E of San Severo (53905 inhabitants)
39 Km NW of Cerignola (58396 inhabitants)
55 Km NW of Barletta (94814 inhabitants)
62 Km NW of Andria (100440 inhabitants)
67 Km NW of Trani (56217 inhabitants)
75 Km NW of Bisceglie (55422 inhabitants)
84 Km NW of Molfetta (59874 inhabitants)
94 Km NE of Benevento (60091 inhabitants)
97 Km NW of Bitonto (55540 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
Reviewed
Rev100 		ML 1.0 2020-10-23
20:22:17		 41.586 15.7262 17 2020-10-23
20:28:37		 Sala Sismica INGV-Roma 84069611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-23 20:22:17 ± 0.43
Latitude 41.5860 ± 0.0207
Longitude 15.7262 ± 0.0168
Depth (km) 17 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84069611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1937
Semi-minor axis of confidence ellipse (meter) 1289
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 165
Circular confidence region, given by single value of horizontal uncertainty (meter) 1940.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 238
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.46315
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 84069611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-23 20:28:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PAOL.HHZ. 2020-10-23T20:22:38.60 3.0 undecidable manual P -0.01 0
IV.MELA.HHZ. 2020-10-23T20:22:34.72 0.6 undecidable manual S 285 51.4152 98 0.79 39
IV.MELA.HHZ. 2020-10-23T20:22:27.72 1.0 positive manual P 285 51.4152 98 0.67 19
IV.MSAG.HHZ. 2020-10-23T20:22:26.16 0.6 undecidable manual S 47 20.6682 117 0.15 51
IV.APRC.HHZ. 2020-10-23T20:22:26.63 0.3 undecidable manual S 321 24.3534 112 -0.26 68
OT.OT03.EHE. 2020-10-23T20:22:25.06 0.6 undecidable manual S 336 15.3735 128 0.25 51
OT.OT06.EHE. 2020-10-23T20:22:25.33 0.6 undecidable manual S 315 15.5733 127 0.47 51
OT.OT05.EHZ. 2020-10-23T20:22:24.37 0.6 undecidable manual S 308 13.0758 134 0.01 50
IV.APRC.HHZ. 2020-10-23T20:22:22.70 0.6 undecidable manual P 321 24.3534 112 -0.28 49
IV.MSAG.HHZ. 2020-10-23T20:22:22.57 0.6 negative manual P 47 20.6682 117 0.09 49
OT.OT06.EHE. 2020-10-23T20:22:21.99 0.1 undecidable manual P 315 15.5733 127 0.18 100
OT.OT03.EHE. 2020-10-23T20:22:21.27 0.1 undecidable manual P 336 15.3735 128 -0.51 94
OT.OT05.EHZ. 2020-10-23T20:22:21.20 0.1 positive manual P 308 13.0758 134 -0.32 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OT.OT05.EHE. ML:1.2 0.00011599999999999999 0.08 AML other m 2020-10-23T20:22:24.69
OT.OT05.EHN. ML:1.0 0.00006950000000000001 1.04 AML other m 2020-10-23T20:22:25.80
IV.MSAG.HHE. ML:0.7 0.000030550000000000004 0.12 AML other m 2020-10-23T20:22:26.28
IV.MSAG.HHN. ML:1.0 0.00006214999999999999 0.22 AML other m 2020-10-23T20:22:26.85
IV.APRC.HHE. ML:1.1 0.00006204999999999999 1.22 AML other m 2020-10-23T20:22:27.04
IV.APRC.HHN. ML:1.2 0.0000965 0.58 AML other m 2020-10-23T20:22:27.07
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