Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 17-11-2020 and time 18:29:51 (Italy) in region 4 km E San Giovanni Rotondo (FG)

A magnitude ML 1.8 earthquake occured in region: 4 km E San Giovanni Rotondo (FG), on

  • 17-11-2020 17:29:51 (UTC)
  • 17-11-2020 18:29:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7, 15.77 at 19 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 11 13831 41015
Manfredonia FG 15 57279 98294
Rignano Garganico FG 15 2117 100411
Cagnano Varano FG 15 7330 107741
Monte Sant'Angelo FG 16 12657 120398
Carpino FG 18 4182 124580

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km NW of Manfredonia (57279 inhabitants)
32 Km NE of Foggia (151991 inhabitants)
32 Km E of San Severo (53905 inhabitants)
49 Km N of Cerignola (58396 inhabitants)
60 Km NW of Barletta (94814 inhabitants)
68 Km NW of Andria (100440 inhabitants)
72 Km NW of Trani (56217 inhabitants)
79 Km NW of Bisceglie (55422 inhabitants)
88 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
Reviewed
Rev100 		ML 1.8 2020-11-17
17:29:51		 41.7 15.77 19 2020-11-17
22:17:50		 Sala Sismica INGV-Roma 84807501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-17 17:29:51 ± 0.07
Latitude 41.70 ± 0.00
Longitude 15.77 ± 0.00
Depth (km) 19 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84807501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 304
Semi-minor axis of confidence ellipse (meter) 245
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 318
Circular confidence region, given by single value of horizontal uncertainty (meter) 300
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 94
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.71136
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations 5
Type of magnitude ML
Reference to an origin 84807501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-17 22:17:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SENA.HHZ. 2020-11-17T17:31:23.31 3.0 undecidable manual Sn 0.86 0
IV.IMOL.HNZ. 2020-11-17T17:31:20.20 3.0 undecidable manual Sn -1.14 0
IV.EUCT.HNZ. 2020-11-17T17:31:08.01 3.0 undecidable manual Pn 7.6 0
IV.ARCI.HHZ. 2020-11-17T17:31:05.28 3.0 undecidable manual Sg 8.04 0
IV.CAVE.HHZ. 2020-11-17T17:30:55.75 3.0 negative manual Pg 10.73 0
IV.ATFO.HHZ. 2020-11-17T17:30:21.59 3.0 positive manual Pn 2.31 0
IV.MRVN.HHE. 2020-11-17T17:30:15.52 0.3 undecidable manual S 153 0.7114 97 -0.12 66
IV.CAPA.HNZ. 2020-11-17T17:30:10.86 0.6 undecidable manual S 176 0.5378 100 0.3 43
IV.TREM.HNZ. 2020-11-17T17:30:08.46 0.6 undecidable manual S 336 0.4676 102 -0.07 46
IV.MRVN.HHE. 2020-11-17T17:30:05.48 0.1 undecidable manual P 153 0.7114 97 -0.16 87
OT.OT13.EHE. 2020-11-17T17:30:05.31 0.3 undecidable manual S 59 0.3588 106 -0.09 71
IV.CAPA.HNZ. 2020-11-17T17:30:02.66 0.3 undecidable manual P 176 0.5378 100 -0.05 69
IV.TREM.HNZ. 2020-11-17T17:30:01.67 0.6 undecidable manual P 336 0.4676 102 0.14 46
IV.APRC.HHZ. 2020-11-17T17:30:00.47 0.3 undecidable manual S 290 0.1781 127 -0.06 74
OT.OT13.EHE. 2020-11-17T17:29:59.72 0.1 undecidable manual P 59 0.3588 106 0 96
OT.OT04.EHN. 2020-11-17T17:29:59.72 0.3 undecidable manual S 280 0.1403 134 0.03 75
OT.OT06.EHZ. 2020-11-17T17:29:59.23 0.3 undecidable manual S 266 0.1286 137 -0.22 72
OT.OT05.EHZ. 2020-11-17T17:29:59.34 0.3 undecidable manual S 254 0.1277 138 -0.08 74
IV.SGRT.HHN. 2020-11-17T17:29:58.42 0.3 undecidable manual S 344 0.0621 157 0.06 76
IV.APRC.HHZ. 2020-11-17T17:29:56.95 0.1 negative manual P 290 0.1781 127 0.04 99
OT.OT04.EHN. 2020-11-17T17:29:56.51 0.1 undecidable manual P 280 0.1403 134 0.08 99
OT.OT06.EHZ. 2020-11-17T17:29:56.31 0.1 undecidable manual P 266 0.1286 137 0.02 100
OT.OT05.EHZ. 2020-11-17T17:29:56.31 0.1 undecidable manual P 254 0.1277 138 0.03 100
IV.SGRT.HHN. 2020-11-17T17:29:55.84 0.1 positive manual P 344 0.0621 157 0.18 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OT.OT05.EHE. ML:1.7 0.000344 1.08 AML other m 2020-11-17T17:29:59.66
OT.OT05.EHN. ML:1.6 0.0002765 0.18 AML other m 2020-11-17T17:29:59.80
IV.APRC.HHE. ML:1.8 0.000336 0.18 AML other m 2020-11-17T17:30:00.71
IV.APRC.HHN. ML:1.9 0.00049 0.12 AML other m 2020-11-17T17:30:00.75
IV.APRC.HNE. ML:1.8 0.0003233997 0.1664 AML other m 2020-11-17T17:30:00.70
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download