Earthquake (quarry blast) with magnitude of ML 1.6 on date 23-12-2020 and time 10:58:28 (Italy) in region 7 km SE Rignano Garganico (FG)

A magnitude ML 1.6 (quarry blast) earthquake occured in region: 7 km SE Rignano Garganico (FG), on

  • 23-12-2020 09:58:28 (UTC)
  • 23-12-2020 10:58:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.63, 15.64 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 7 2117 2117
San Marco in Lamis FG 9 13831 15948
San Giovanni Rotondo FG 11 27184 43132

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NE of Foggia (151991 inhabitants)
23 Km E of San Severo (53905 inhabitants)
23 Km W of Manfredonia (57279 inhabitants)
46 Km NW of Cerignola (58396 inhabitants)
63 Km NW of Barletta (94814 inhabitants)
71 Km NW of Andria (100440 inhabitants)
76 Km NW of Trani (56217 inhabitants)
84 Km NW of Bisceglie (55422 inhabitants)
91 Km NE of Benevento (60091 inhabitants)
93 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
Bulletin
Rev1000
ML 1.6 2020-12-23
09:58:28
41.63 15.64 1 2021-02-26
14:56:14
Bollettino Sismico Italiano INGV 86206691
Reviewed
Rev100
ML 1.6 2020-12-23
09:58:27
41.6 15.62 7 2020-12-23
10:07:51
Sala Sismica INGV-Roma 85646931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-23 09:58:28 ± 0.21
Latitude 41.63 ± 0.01
Longitude 15.64 ± 0.01
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type quarry blast
Origin ID 86206691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1510
Semi-minor axis of confidence ellipse (meter) 580
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 22
Circular confidence region, given by single value of horizontal uncertainty (meter) 1510
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 211
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 9
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) 0.33005
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 86206691
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-27 18:20:12

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 85646931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-23 10:07:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ERC.EHZ. 2020-12-23T10:00:19.31 3.0 undecidable manual Sg 12.03 0
IV.CRE.HHZ. 2020-12-23T10:00:13.13 3.0 undecidable manual Sg 12.51 0
MN.KLV.HHZ. 2020-12-23T10:00:09.90 3.0 negative manual Pg 23.120001 0
IV.SBPO.HNZ. 2020-12-23T09:59:54.40 3.0 negative manual Pg 17.08 0
IV.MMUR.HNZ. 2020-12-23T09:59:51.41 3.0 undecidable manual Sg 7.25 0
IV.APPI.EHZ. 2020-12-23T09:59:51.53 3.0 negative manual Pn 0.65 0
IV.HPAC.HHZ. 2020-12-23T09:59:44.12 3.0 positive manual Pg 16.49 0
IV.CAFI.HNZ. 2020-12-23T09:59:23.56 3.0 undecidable manual Pg 9.72 0
IV.ESML.HHZ. 2020-12-23T09:59:17.41 3.0 negative manual Pn 1.88 0
IV.PIPA.HHZ. 2020-12-23T09:59:16.73 3.0 undecidable manual Sn -0.37 0
IV.ATVO.HHZ. 2020-12-23T09:59:09.20 3.0 negative manual Pn -1.65 0
OT.TAR1.HHZ. 2020-12-23T09:59:04.92 3.0 undecidable manual S 0.76 0
IV.MNTP.HNZ. 2020-12-23T09:59:04.74 3.0 undecidable manual Pg 3.84 0
IV.MTCE.HHZ. 2020-12-23T09:58:58.14 3.0 positive manual Pn -0.17 0
OT.TREM.HHZ. 2020-12-23T09:58:46.00 3.0 undecidable manual S 0
OT.TREM.HHZ. 2020-12-23T09:58:43.28 3.0 undecidable manual P 0
OT.OT14.EHN. 2020-12-23T09:58:35.89 0.3 undecidable manual P 37 0.3301 91 -0.2 70
IV.MSAG.HHZ. 2020-12-23T09:58:33.30 0.1 undecidable manual P 68 0.2149 91 -0.23 94
IV.APRC.HHZ. 2020-12-23T09:58:31.89 0.1 positive manual P 329 0.1457 92 -0.1 98
OT.OT04.EHE. 2020-12-23T09:58:31.03 0.3 undecidable manual P 332 0.0989 93 0.08 75
IV.SGRT.HHZ. 2020-12-23T09:58:31.97 0.1 positive manual P 32 0.1439 92 0.01 100
IV.MCRV.HHZ. 2020-12-23T09:58:30.26 3.0 undecidable manual P -1.15 0
OT.OT03.EHE. 2020-12-23T09:58:30.77 0.1 positive manual P 4 0.08 93 0.23 97
OT.OT07.EHE. 2020-12-23T09:58:30.24 0.1 undecidable manual P 101 0.0585 94 0.18 98
OT.OT06.EHE. 2020-12-23T09:58:30.45 0.1 positive manual P 326 0.0648 94 0.26 97
OT.OT05.EHZ. 2020-12-23T09:58:29.38 0.1 undecidable manual P 312 0.0405 96 -0.28 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OT.OT05.EHE. ML:0 0.005600019 0.2432 AML other m 2020-12-23T09:58:31.38
OT.OT05.EHN. ML:0 0.00466 0.36 AML other m 2020-12-23T09:58:31.61
IV.SGRT.HHN. ML:0 0.0006349046 0.1792 AML other m 2020-12-23T09:58:34.89
IV.SGRT.HHE. ML:0 0.000428 0.88 AML other m 2020-12-23T09:58:37.64
IV.MSAG.HNN. ML:0 0.000614 0.84 AML other m 2020-12-23T09:58:44.91
IV.APRC.HHN. ML:0 0.0006835 0.36 AML other m 2020-12-23T09:58:37.60
IV.APRC.HHE. ML:0 0.000625 1.64 AML other m 2020-12-23T09:58:38.06
IV.APRC.HNE. ML:1.8 0.00064758215 0.3648 AML other m 2020-12-23T09:58:38.88
IV.MSAG.HHE. ML:0 0.0001281649 0.32 AML other m 2020-12-23T09:58:39.46
IV.MSAG.HNE. ML:0 0.0003385 1.3 AML other m 2020-12-23T09:58:39.80
IV.MSAG.HHN. ML:0 0.0002465 0.82 AML other m 2020-12-23T09:58:44.90
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