Earthquake (quarry blast) with magnitude of ML 1.1 on date 17-04-2020 and time 10:22:37 (Italy) in region 13 km SW Manfredonia (FG)

A magnitude ML 1.1 (quarry blast) earthquake occured in region: 13 km SW Manfredonia (FG), on

  • 17-04-2020 08:22:37 (UTC)
  • 17-04-2020 10:22:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.57, 15.79 at 5 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
Manfredonia FG 13 57279 57279
San Giovanni Rotondo FG 16 27184 84463
Zapponeta FG 19 3396 87859

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SW of Manfredonia (57279 inhabitants)
24 Km NE of Foggia (151991 inhabitants)
35 Km N of Cerignola (58396 inhabitants)
36 Km E of San Severo (53905 inhabitants)
49 Km NW of Barletta (94814 inhabitants)
57 Km NW of Andria (100440 inhabitants)
62 Km NW of Trani (56217 inhabitants)
70 Km NW of Bisceglie (55422 inhabitants)
79 Km NW of Molfetta (59874 inhabitants)
91 Km NW of Bitonto (55540 inhabitants)
97 Km NE of Benevento (60091 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
Rev 100 ML 1.1 2020-04-17
08:22:37
41.57 15.79 5 2020-04-17
08:27:51
Sala Sismica INGV-Roma 78313561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-17 08:22:37 ± 0.34
Latitude 41.57 ± 0.01
Longitude 15.79 ± 0.01
Depth (km) 5 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type quarry blast
Origin ID 78313561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1362
Semi-minor axis of confidence ellipse (meter) 856
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 173
Circular confidence region, given by single value of horizontal uncertainty (meter) 1360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 248
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 11
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
Epicentral distance of station farthest from the epicenter (degree) 0.2635
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.5
Num. used stations 8
Type of magnitude ML
Reference to an origin 78313561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-17 08:27:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PTRJ.HNZ. 2020-04-17T08:22:47.77 3.0 undecidable manual P 0.01 0
OT.OT04.EHZ. 2020-04-17T08:22:46.20 0.6 undecidable manual S 314 0.2167 101 0.43 46
IV.MSAG.HHZ. 2020-04-17T08:22:44.28 0.6 undecidable manual S 32 0.1682 104 0.32 47
IV.SGRT.HHZ. 2020-04-17T08:22:44.33 0.6 undecidable manual S 349 0.1889 103 -0.38 47
IV.APRC.HHN. 2020-04-17T08:22:43.54 0.1 undecidable manual P 316 0.2635 99 0.34 92
OT.OT04.EHZ. 2020-04-17T08:22:42.17 0.1 undecidable manual P 314 0.2167 101 -0.01 100
IV.MSAG.HHZ. 2020-04-17T08:22:41.08 0.3 negative manual P 32 0.1682 104 -0.05 75
OT.OT06.EHN. 2020-04-17T08:22:41.34 0.1 undecidable manual P 309 0.1871 103 -0.18 97
IV.SGRT.HHZ. 2020-04-17T08:22:41.36 0.1 positive manual P 349 0.1889 103 -0.2 97
OT.OT12.EHZ. 2020-04-17T08:22:41.69 0.6 undecidable manual S 55 0.1079 112 -0.05 51
OT.OT05.EHZ. 2020-04-17T08:22:40.96 0.1 undecidable manual P 303 0.1664 104 -0.12 99
OT.OT12.EHZ. 2020-04-17T08:22:39.94 0.3 negative manual P 55 0.1079 112 0.09 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OT.OT12.EHE. ML:2.6 0.0054713255 0.2368 AML other m 2020-04-17T08:22:43.66
OT.OT12.EHN. ML:2.8 0.009492072 0.2624 AML other m 2020-04-17T08:22:43.03
IV.MSAG.HNE. ML:1 7.9280665E-5 0.224 AML other m 2020-04-17T08:22:46.06
IV.MSAG.HNN. ML:1.2 0.00012670595 0.3008 AML other m 2020-04-17T08:22:50.65
IV.MSAG.HHE. ML:0.4 2.4849885E-5 0.224 AML other m 2020-04-17T08:22:46.06
IV.MSAG.HHN. ML:0.8 5.1654915E-5 0.2432 AML other m 2020-04-17T08:22:50.53
IV.SGRT.HHE. ML:1.2 0.0001319271 0.16 AML other m 2020-04-17T08:22:44.52
IV.SGRT.HHN. ML:1.1 0.000103971615 0.16 AML other m 2020-04-17T08:22:44.58
IV.PTRJ.HNE. ML:3.1 0.00120320815 0.5888 AML other m 2020-04-17T08:23:06.68
IV.PTRJ.HNN. ML:3.1 0.0010900218 0.736 AML other m 2020-04-17T08:23:20.54
IV.PTRJ.HHE. ML:1.2 1.262572E-5 0.5824 AML other m 2020-04-17T08:22:55.38
IV.PTRJ.HHN. ML:0.8 5.8410681E-6 0.8448 AML other m 2020-04-17T08:23:08.90
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