Earthquake with magnitude of ML 1.0 on date 12-08-2020 and time 20:35:09 (Italy) in region 4 km E San Nicandro Garganico (FG)

A magnitude ML 1.0 earthquake occured in region: 4 km E San Nicandro Garganico (FG), on

  • 12-08-2020 18:35:09 (UTC)
  • 12-08-2020 20:35:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.83, 15.6 at 21 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.

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 4 15566 15566
San Marco in Lamis FG 13 13831 29397
Cagnano Varano FG 14 7330 36727
Apricena FG 14 13328 50055
San Giovanni Rotondo FG 17 27184 77239
Rignano Garganico FG 17 2117 79356
Poggio Imperiale FG 20 2724 82080

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NE of San Severo (53905 inhabitants)
35 Km NW of Manfredonia (57279 inhabitants)
41 Km N of Foggia (151991 inhabitants)
68 Km NW of Cerignola (58396 inhabitants)
80 Km NW of Barletta (94814 inhabitants)
89 Km NW of Andria (100440 inhabitants)
92 Km NW of Trani (56217 inhabitants)
100 Km NW of Bisceglie (55422 inhabitants)
Recent and historical Seismicity
Seismic hazard
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire ( that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
ML 1.0 2020-08-12
41.83 15.6 21 2020-08-12
Sala Sismica INGV-Roma 81916211
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2020-08-12 18:35:09 ± 0.14
Latitude 41.83 ± 0.01
Longitude 15.60 ± 0.01
Depth (km) 21 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81916211


Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1256
Semi-minor axis of confidence ellipse (meter) 515
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 183
Circular confidence region, given by single value of horizontal uncertainty (meter) 1260
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 227
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.08723
Epicentral distance of station farthest from the epicenter (degree) 0.37682
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information


Field Value
Value 1
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 81916211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-12 18:44:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MELA.HHZ. 2020-08-12T18:35:23.57 0.6 undecidable manual S 251 0.3768 109 0.44 44
IV.MSAG.HHZ. 2020-08-12T18:35:20.15 0.3 undecidable manual S 118 0.2581 119 0.25 70
IV.MELA.HHZ. 2020-08-12T18:35:17.04 0.1 undecidable manual P 251 0.3768 109 -0.14 94
OT.OT05.EHZ. 2020-08-12T18:35:17.79 0.3 undecidable manual S 180 0.1727 132 -0.04 75
IV.APRC.HHZ. 2020-08-12T18:35:16.26 0.3 undecidable manual S 211 0.0872 152 0 76
IV.SGRT.HHZ. 2020-08-12T18:35:16.97 0.3 undecidable manual S 126 0.1304 141 0.01 76
IV.MSAG.HHZ. 2020-08-12T18:35:15.29 0.1 undecidable manual P 118 0.2581 119 -0.03 98
OT.OT05.EHZ. 2020-08-12T18:35:14.16 0.1 undecidable manual P 180 0.1727 132 0.03 99
IV.APRC.HHZ. 2020-08-12T18:35:13.08 0.1 undecidable manual P 211 0.0872 152 -0.13 99
IV.SGRT.HHZ. 2020-08-12T18:35:13.54 0.1 undecidable manual P 126 0.1304 141 -0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.APRC.HHE. ML:1 6.99E-5 0.1 AML other m 2020-08-12T18:35:16.72
IV.APRC.HHN. ML:1.1 9.575E-5 0.14 AML other m 2020-08-12T18:35:16.98
IV.SGRT.HHE. ML:1 6.725E-5 0.14 AML other m 2020-08-12T18:35:17.20
IV.SGRT.HHN. ML:0.9 4.55E-5 0.2 AML other m 2020-08-12T18:35:17.29
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download