Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 1.7 on date 22-12-2021 and time 10:12:18 (UTC) in region 6 km SE Rignano Garganico (FG)

A magnitude ML 1.7 (quarry blast) earthquake occured in region: 6 km SE Rignano Garganico (FG), on

  • 22-12-2021 10:12:18 (UTC)
  • 22-12-2021 11:12:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.6370, 15.6440 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.

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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)
47 Km NW of Cerignola (58396 inhabitants)
64 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 1.7 2021-12-22
10:12:18		 41.6368 15.644 1 2022-03-30
13:04:26		 Bollettino Sismico Italiano INGV 99328221
Reviewed
Rev100 		ML 1.9 2021-12-22
10:12:17		 41.6028 15.6177 7 2021-12-22
10:27:47		 Sala Sismica INGV-Roma 98813341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-22 10:12:18 ± 0.23
Latitude 41.6368 ± 0.0144
Longitude 15.6440 ± 0.0108
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 99328221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1690
Semi-minor axis of confidence ellipse (meter) 690
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 23
Circular confidence region, given by single value of horizontal uncertainty (meter) 1690.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 201
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.32555
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 99328221
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-06 08:27:27

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 98813341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-22 10:27:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TST01.HHZ. 2021-12-22T10:12:40.93 3.0 undecidable manual P 2.37 0
IV.MRVN.HHZ. 2021-12-22T10:12:33.67 3.0 negative manual P -0.3 0
IV.VULT.HHN. 2021-12-22T10:12:31.51 3.0 undecidable manual P 0.56 0
IT.ORP.HGZ. 2021-12-22T10:12:30.32 3.0 undecidable manual P 0.04 0
IV.MOCO.HNE. 2021-12-22T10:12:27.33 3.0 undecidable manual P 0.32 0
OT.OT14.EHZ. 2021-12-22T10:12:24.92 0.3 undecidable manual P 37 36.1416 91 -0.46 67
IV.MSAG.HHZ. 2021-12-22T10:12:22.69 0.1 positive manual P 69 23.5542 91 -0.17 96
OT.OT12.EHZ. 2021-12-22T10:12:22.63 0.3 undecidable manual P 91 21.867 91 0.1 74
IV.SGRT.HHZ. 2021-12-22T10:12:21.30 0.1 positive manual P 32 15.4734 92 0.06 100
OT.OT04.EHZ. 2021-12-22T10:12:20.39 0.1 positive manual P 330 10.5783 93 0.13 99
OT.OT03.EHN. 2021-12-22T10:12:20.11 0.3 undecidable manual P 3 8.3805 93 0.28 72
OT.OT06.EHN. 2021-12-22T10:12:19.80 0.3 undecidable manual P 323 6.7932 94 0.29 72
OT.OT07.EHN. 2021-12-22T10:12:19.62 0.3 undecidable manual P 105 6.4935 94 0.17 74
OT.OT05.EHZ. 2021-12-22T10:12:18.63 0.1 positive manual P 306 4.1958 97 -0.37 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SGRT.HHN. ML:1.8 0.0006615 0.44 AML other m 2021-12-22T10:12:27.29
IV.SGRT.HHE. ML:1.7 0.00060478225 0.4992 AML other m 2021-12-22T10:12:27.31
IV.MSAG.HHN. ML:1.9 0.0005455 0.24 AML other m 2021-12-22T10:12:29.24
IV.MSAG.HNN. ML:2.3 0.0013109425 0.2432 AML other m 2021-12-22T10:12:29.24
IV.MSAG.HHE. ML:1.5 0.00020470575000000002 0.4032 AML other m 2021-12-22T10:12:29.84
IV.MSAG.HNE. ML:1.9 0.0005420423000000001 0.3776 AML other m 2021-12-22T10:12:29.65
OT.OT12.EHN. ML:1.8 0.0004715 1.52 AML other m 2021-12-22T10:12:29.17
OT.OT12.EHE. ML:1.4 0.0002041016 0.384 AML other m 2021-12-22T10:12:30.88
OT.OT14.EHN. ML:1.7 0.00020148009999999998 0.2816 AML other m 2021-12-22T10:12:32.13
OT.OT14.EHE. ML:1.5 0.00013618305 0.3392 AML other m 2021-12-22T10:12:34.37
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download