Earthquake with magnitude of ML 1.6 on date 21-09-2020 and time 14:09:37 (UTC) in region 9 km SE Rignano Garganico (FG)

A magnitude ML 1.6 earthquake occured in region: 9 km SE Rignano Garganico (FG), on

  • 21-09-2020 14:09:37 (UTC)
  • 21-09-2020 16:09:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.61, 15.64 at 4 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
Rignano Garganico FG 9 2117 2117
San Marco in Lamis FG 12 13831 15948
San Giovanni Rotondo FG 13 27184 43132
Foggia FG 18 151991 195123

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NE of Foggia (151991 inhabitants)
23 Km W of Manfredonia (57279 inhabitants)
23 Km E of San Severo (53905 inhabitants)
44 Km NW of Cerignola (58396 inhabitants)
62 Km NW of Barletta (94814 inhabitants)
69 Km NW of Andria (100440 inhabitants)
75 Km NW of Trani (56217 inhabitants)
82 Km NW of Bisceglie (55422 inhabitants)
89 Km NE of Benevento (60091 inhabitants)
92 Km NW of Molfetta (59874 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
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 (http://www.haisentitoilterremoto.it/) 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
Reviewed
Rev100
ML 1.6 2020-09-21
14:09:37
41.61 15.64 4 2020-09-21
14:18:13
Sala Sismica INGV-Roma 83106251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-21 14:09:37 ± 0.11
Latitude 41.61 ± 0.01
Longitude 15.64 ± 0.00
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83106251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 520
Semi-minor axis of confidence ellipse (meter) 476
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 347
Circular confidence region, given by single value of horizontal uncertainty (meter) 520
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 166
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.05936
Epicentral distance of station farthest from the epicenter (degree) 0.46765
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 83106251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-21 14:18:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CAPA.HHN. 2020-09-21T14:09:47.45 1.0 undecidable manual P 164 0.4676 50 0.05 23
IV.MSAG.HHZ. 2020-09-21T14:09:45.96 0.3 undecidable manual S 62 0.2257 99 0.07 72
IV.SGRT.HHZ. 2020-09-21T14:09:43.49 0.3 undecidable manual S 27 0.1655 102 -0.13 72
IV.APRC.HHZ. 2020-09-21T14:09:43.83 0.3 undecidable manual S 334 0.1673 102 0.16 71
IV.MSAG.HHZ. 2020-09-21T14:09:42.21 0.1 undecidable manual P 62 0.2257 99 0.04 96
OT.OT03.EHN. 2020-09-21T14:09:41.27 0.3 undecidable manual S 3 0.1052 109 -0.09 73
OT.OT04.EHZ. 2020-09-21T14:09:41.80 0.3 undecidable manual S 338 0.1214 107 -0.15 72
IV.SGRT.HHZ. 2020-09-21T14:09:40.89 0.1 undecidable manual P 27 0.1655 102 0.03 98
IV.APRC.HHZ. 2020-09-21T14:09:40.72 0.1 undecidable manual P 334 0.1673 102 -0.17 95
OT.OT06.EHN. 2020-09-21T14:09:40.91 0.1 undecidable manual S 336 0.0854 113 0.24 95
OT.OT06.EHN. 2020-09-21T14:09:39.33 0.1 undecidable manual P 336 0.0854 113 0.17 96
OT.OT04.EHZ. 2020-09-21T14:09:39.89 0.1 undecidable manual P 338 0.1214 107 -0.01 99
OT.OT05.EHZ. 2020-09-21T14:09:39.76 0.1 undecidable manual S 330 0.0594 122 -0.01 100
OT.OT03.EHN. 2020-09-21T14:09:39.60 0.1 undecidable manual P 3 0.1052 109 0.05 98
OT.OT05.EHZ. 2020-09-21T14:09:38.41 0.1 positive manual P 330 0.0594 122 -0.23 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SGRT.HHN. ML:1.6 0.000361 0.18 AML other m 2020-09-21T14:09:43.73
IV.SGRT.HHE. ML:1.5 0.000287 0.18 AML other m 2020-09-21T14:09:43.83
IV.APRC.HHN. ML:1.7 0.0004305 0.3 AML other m 2020-09-21T14:09:46.44
IV.APRC.HHE. ML:1.6 0.000343 0.32 AML other m 2020-09-21T14:09:46.45
IV.MSAG.HNE. ML:1.5 0.0002175 1.36 AML other m 2020-09-21T14:09:47.97
IV.MSAG.HHE. ML:1.2 8.755E-5 1.36 AML other m 2020-09-21T14:09:47.29
IV.MSAG.HHN. ML:1.4 0.000181 1.38 AML other m 2020-09-21T14:09:48.21
IV.MSAG.HNN. ML:1.8 0.0004335 1.36 AML other m 2020-09-21T14:09:48.22
IV.VULT.HNN. ML:2.7 0.0008375 0.06 AML other m 2020-09-21T14:10:09.32
IV.VULT.HHE. ML:2.3 0.0003355 0.08 AML other m 2020-09-21T14:10:09.36
IV.VULT.HHN. ML:2.8 0.0009505 0.08 AML other m 2020-09-21T14:10:09.33
IV.VULT.HNE. ML:2.2 0.0002655 0.06 AML other m 2020-09-21T14:10:09.36
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