Earthquake (quarry blast) with magnitude of ML 1.3 on date 04-12-2020 and time 11:56:30 (Italy) in region 14 km SE Rignano Garganico (FG)

A magnitude ML 1.3 (quarry blast) earthquake occured in region: 14 km SE Rignano Garganico (FG), on

  • 04-12-2020 10:56:30 (UTC)
  • 04-12-2020 11:56:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.59, 15.7 at 6 km depth.

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

Event type: quarry blast.

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 14 2117 2117
San Giovanni Rotondo FG 14 27184 29301
San Marco in Lamis FG 15 13831 43132
Foggia FG 19 151991 195123
Manfredonia FG 19 57279 252402

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km NE of Foggia (151991 inhabitants)
19 Km W of Manfredonia (57279 inhabitants)
29 Km E of San Severo (53905 inhabitants)
40 Km NW of Cerignola (58396 inhabitants)
57 Km NW of Barletta (94814 inhabitants)
64 Km NW of Andria (100440 inhabitants)
69 Km NW of Trani (56217 inhabitants)
77 Km NW of Bisceglie (55422 inhabitants)
86 Km NW of Molfetta (59874 inhabitants)
92 Km NE of Benevento (60091 inhabitants)
99 Km NW of Bitonto (55540 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 1.3 2020-12-04
10:56:30
41.59 15.7 6 2020-12-04
11:05:52
Sala Sismica INGV-Roma 85197821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-04 10:56:30 ± 0.22
Latitude 41.59 ± 0.01
Longitude 15.70 ± 0.01
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type quarry blast
Origin ID 85197821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 905
Semi-minor axis of confidence ellipse (meter) 172
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 187
Circular confidence region, given by single value of horizontal uncertainty (meter) 910
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 264
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 14
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
Epicentral distance of station farthest from the epicenter (degree) 0.20684
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 85197821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-04 11:05:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MCRV.HHZ. 2020-12-04T10:56:50.74 3.0 undecidable manual P 0 0
IV.APRC.HHZ. 2020-12-04T10:56:38.51 0.6 undecidable manual S 326 0.2068 104 -0.41 46
IV.MSAG.HHZ. 2020-12-04T10:56:38.87 0.6 undecidable manual S 51 0.2005 105 0.16 48
IV.SGRT.HHZ. 2020-12-04T10:56:37.47 0.6 undecidable manual S 11 0.1709 107 -0.14 49
OT.OT03.EHZ. 2020-12-04T10:56:36.09 0.6 undecidable manual S 344 0.1304 112 -0.05 50
OT.OT06.EHZ. 2020-12-04T10:56:36.32 0.6 undecidable manual S 322 0.1259 112 0.35 47
IV.APRC.HHZ. 2020-12-04T10:56:35.29 0.6 negative manual P 326 0.2068 104 -0.17 48
OT.OT05.EHZ. 2020-12-04T10:56:35.49 0.6 undecidable manual S 315 0.1025 117 0.35 47
IV.MSAG.HHZ. 2020-12-04T10:56:35.48 0.3 negative manual P 51 0.2005 105 0.15 72
IV.SGRT.HHZ. 2020-12-04T10:56:34.70 1.0 negative manual P 11 0.1709 107 0 25
OT.OT04.EHN. 2020-12-04T10:56:34.42 0.3 undecidable manual P 326 0.1601 108 -0.03 75
OT.OT03.EHZ. 2020-12-04T10:56:33.92 0.3 undecidable manual P 344 0.1304 112 0.07 75
OT.OT06.EHZ. 2020-12-04T10:56:33.87 0.3 undecidable manual P 322 0.1259 112 0.12 74
OT.OT05.EHZ. 2020-12-04T10:56:33.20 0.1 positive manual P 315 0.1025 117 -0.07 100
OT.OT07.EHZ. 2020-12-04T10:56:31.94 0.1 undecidable manual P 23 0.0378 144 -0.2 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OT.OT05.EHE. ML:1.5 0.0005291954 0.384 AML other m 2020-12-04T10:56:37.34
OT.OT05.EHN. ML:1.4 0.00032151285 0.3392 AML other m 2020-12-04T10:56:37.82
IV.SGRT.HHE. ML:1.4 0.0002065171 1.4784 AML other m 2020-12-04T10:56:39.36
IV.SGRT.HHN. ML:1.3 0.00016154655 0.1408 AML other m 2020-12-04T10:56:38.60
IV.APRC.HHE. ML:1.2 0.00011145255 0.6208 AML other m 2020-12-04T10:56:43.57
IV.APRC.HHN. ML:1.3 0.000145300355 0.224 AML other m 2020-12-04T10:56:41.72
IV.APRC.HNE. ML:1.4 0.0001551233 0.6144 AML other m 2020-12-04T10:56:43.57
IV.MSAG.HHE. ML:0.9 5.913374E-5 0.3584 AML other m 2020-12-04T10:56:40.28
IV.MSAG.HHN. ML:1.2 0.00011401995 0.3968 AML other m 2020-12-04T10:56:43.58
IV.MSAG.HNE. ML:1.3 0.000142504905 0.1792 AML other m 2020-12-04T10:56:40.84
IV.MSAG.HNN. ML:1.6 0.00027250705 0.3776 AML other m 2020-12-04T10:56:43.40
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