Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 17-11-2020 and time 08:53:27 (Italy) in region 4 km S San Giovanni Rotondo (FG)

A magnitude ML 1.7 earthquake occured in region: 4 km S San Giovanni Rotondo (FG), on

  • 17-11-2020 07:53:27 (UTC)
  • 17-11-2020 08:53:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.6750, 15.7230 at 22 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 Giovanni Rotondo FG 4 27184 27184
San Marco in Lamis FG 8 13831 41015
Rignano Garganico FG 11 2117 43132
Manfredonia FG 17 57279 100411
Cagnano Varano FG 18 7330 107741
Monte Sant'Angelo FG 20 12657 120398

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km W of Manfredonia (57279 inhabitants)
28 Km NE of Foggia (151991 inhabitants)
28 Km E of San Severo (53905 inhabitants)
48 Km NW of Cerignola (58396 inhabitants)
61 Km NW of Barletta (94814 inhabitants)
69 Km NW of Andria (100440 inhabitants)
73 Km NW of Trani (56217 inhabitants)
81 Km NW of Bisceglie (55422 inhabitants)
90 Km NW of Molfetta (59874 inhabitants)
99 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 1.7 2020-11-17
07:53:27		 41.6753 15.7233 22 2021-02-26
14:56:16		 Bollettino Sismico Italiano INGV 86470191
Reviewed
Rev100 		ML 1.7 2020-11-17
07:53:27		 41.6768 15.7287 22 2020-11-17
08:10:21		 Sala Sismica INGV-Roma 84796701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-17 07:53:27 ± 0.15
Latitude 41.6753 ± 0.0099
Longitude 15.7233 ± 0.0120
Depth (km) 22 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86470191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1012
Semi-minor axis of confidence ellipse (meter) 971
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 215
Circular confidence region, given by single value of horizontal uncertainty (meter) 1010.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 16
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.70867
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 86470191
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-22 20:09:02

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 84796701
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-17 08:10:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MOCL.EHZ. 2020-11-17T07:55:15.27 3.0 undecidable manual Sn 4.46 0
IV.NARO.HHZ. 2020-11-17T07:55:01.58 3.0 undecidable manual Sg 16.129999 0
IV.ATFO.HHZ. 2020-11-17T07:54:58.87 3.0 undecidable manual Sg 16.98 0
IV.FREG.HNZ. 2020-11-17T07:54:53.16 3.0 undecidable manual Pg 18.35 0
IV.ZONE.HHZ. 2020-11-17T07:54:48.28 3.0 undecidable manual Pn 2.96 0
IV.CAFI.HNZ. 2020-11-17T07:54:48.68 3.0 undecidable manual Sn -1.55 0
IV.AGLI.HHZ. 2020-11-17T07:54:47.25 3.0 undecidable manual Pg 14.67 0
IV.ILOS.HNZ. 2020-11-17T07:54:45.35 3.0 undecidable manual Sg 2.73 0
IV.COR1.EHZ. 2020-11-17T07:54:40.63 3.0 undecidable manual Sn 0.29 0
IV.CASP.HHZ. 2020-11-17T07:54:29.16 3.0 undecidable manual Pg 11.77 0
IV.CELB.HHZ. 2020-11-17T07:54:23.83 3.0 undecidable manual Pn 0.28 0
IV.POFI.HHZ. 2020-11-17T07:54:12.58 3.0 undecidable manual Sn 5.55 0
IV.MNTT.EHZ. 2020-11-17T07:53:54.16 3.0 negative manual Pn -1.1 0
IV.PTRJ.HNZ. 2020-11-17T07:53:51.44 3.0 undecidable manual Sn -1.44 0
IV.MRVN.HHZ. 2020-11-17T07:53:51.36 0.3 undecidable manual S 150 78.6657 100 0.29 63
OT.OT13.EHZ. 2020-11-17T07:53:41.84 0.3 undecidable manual S 59 44.1225 109 -0.24 68
IV.MRVN.HHZ. 2020-11-17T07:53:41.07 0.6 undecidable manual P 150 78.6657 100 0.02 44
IV.APRC.HHZ. 2020-11-17T07:53:36.06 0.3 undecidable manual S 301 17.4714 136 0.09 73
OT.OT06.EHE. 2020-11-17T07:53:35.05 0.3 undecidable manual S 276 10.7781 151 0.15 73
OT.OT13.EHZ. 2020-11-17T07:53:35.76 0.3 undecidable manual P 59 44.1225 109 -0.1 70
IV.CMPR.HHZ. 2020-11-17T07:53:35.68 3.0 positive manual P -5.39 0
OT.OT05.EHZ. 2020-11-17T07:53:34.09 0.6 undecidable manual S 260 10.1787 152 -0.74 41
OT.OT07.EHE. 2020-11-17T07:53:34.33 0.3 undecidable manual S 183 5.994 163 -0.07 74
OT.OT03.EHE. 2020-11-17T07:53:34.67 0.3 undecidable manual S 304 7.3815 159 0.15 73
IV.SGRT.HHZ. 2020-11-17T07:53:34.69 0.3 undecidable manual S 11 8.9799 155 0.01 75
IV.APRC.HHZ. 2020-11-17T07:53:32.43 0.1 undecidable manual P 301 17.4714 136 0.1 97
IV.SGRT.HHZ. 2020-11-17T07:53:31.69 0.1 positive manual P 11 8.9799 155 0.1 98
OT.OT05.EHZ. 2020-11-17T07:53:31.14 0.3 undecidable manual P 260 10.1787 152 -0.53 67
OT.OT06.EHE. 2020-11-17T07:53:31.95 0.3 undecidable manual P 276 10.7781 151 0.24 71
OT.OT07.EHE. 2020-11-17T07:53:31.46 0.1 undecidable manual P 183 5.994 163 0.04 100
OT.OT03.EHE. 2020-11-17T07:53:31.60 0.3 undecidable manual P 304 7.3815 159 0.11 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SGRT.HHN. ML:1.9 0.000549 0.1 AML other m 2020-11-17T07:53:34.80
IV.SGRT.HHE. ML:1.8 0.00047999999999999996 0.36 AML other m 2020-11-17T07:53:34.93
IV.APRC.HHE. ML:1.7 0.00027400000000000005 1.42 AML other m 2020-11-17T07:53:36.98
IV.APRC.HHN. ML:1.7 0.00029299999999999997 0.6 AML other m 2020-11-17T07:53:36.38
OT.OT13.EHN. ML:2.0 0.00023853855000000002 1.8208 AML other m 2020-11-17T07:53:41.04
OT.OT13.EHE. ML:1.7 0.00015109978 0.096 AML other m 2020-11-17T07:53:43.18
IV.MRVN.HHN. ML:1.5 0.000041760965 1.4016 AML other m 2020-11-17T07:53:51.79
IV.MRVN.HHE. ML:1.4 0.000031158315 0.2176 AML other m 2020-11-17T07:53:51.81
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