Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 15-12-2021 and time 20:35:48 (Italy) in region 4 km W Cagnano Varano (FG)

A magnitude ML 1.1 earthquake occured in region: 4 km W Cagnano Varano (FG), on

  • 15-12-2021 19:35:48 (UTC)
  • 15-12-2021 20:35:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.8410, 15.7310 at 22 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.

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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
Cagnano Varano FG 4 7330 7330
Carpino FG 10 4182 11512
San Nicandro Garganico FG 14 15566 27078
San Giovanni Rotondo FG 15 27184 54262
Ischitella FG 16 4432 58694
Rodi Garganico FG 16 3693 62387
San Marco in Lamis FG 16 13831 76218
Vico del Gargano FG 20 7766 83984

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NW of Manfredonia (57279 inhabitants)
34 Km NE of San Severo (53905 inhabitants)
45 Km NE of Foggia (151991 inhabitants)
66 Km N of Cerignola (58396 inhabitants)
74 Km NW of Barletta (94814 inhabitants)
83 Km NW of Andria (100440 inhabitants)
85 Km NW of Trani (56217 inhabitants)
92 Km NW of Bisceglie (55422 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
Reviewed
Rev100 		ML 1.1 2021-12-15
19:35:48		 41.8408 15.731 22 2021-12-15
19:47:45		 Sala Sismica INGV-Roma 98560881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-15 19:35:48 ± 0.18
Latitude 41.8408 ± 0.0063
Longitude 15.7310 ± 0.0072
Depth (km) 22 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98560881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 746
Semi-minor axis of confidence ellipse (meter) 243
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 144
Circular confidence region, given by single value of horizontal uncertainty (meter) 750.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 204
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.21943
Number of stations at which the event was observed 9
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 7
Type of magnitude ML
Reference to an origin 98560881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-15 19:47:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PAOL.HHZ. 2021-12-15T19:36:24.54 3.0 undecidable manual S -1.63 0
IV.MRB1.HHZ. 2021-12-15T19:36:05.90 3.0 undecidable manual P 0.01 0
OT.OT07.EHZ. 2021-12-15T19:35:58.36 0.3 undecidable manual S 182 24.3534 124 -0.08 99
OT.OT05.EHZ. 2021-12-15T19:35:57.97 0.6 undecidable manual S 208 22.755 127 -0.12 65
OT.OT04.EHZ. 2021-12-15T19:35:57.18 0.6 undecidable manual S 223 18.3705 134 0 67
IV.MSAG.HHZ. 2021-12-15T19:35:57.76 0.6 undecidable manual S 134 20.5683 130 0.13 64
OT.OT06.EHZ. 2021-12-15T19:35:57.48 0.6 undecidable manual S 213 20.5683 130 -0.16 65
OT.OT14.EHZ. 2021-12-15T19:35:56.54 0.6 undecidable manual S 67 15.7731 139 -0.17 66
IV.SGRT.HHZ. 2021-12-15T19:35:55.91 0.6 undecidable manual S 174 9.5793 153 0.13 66
OT.OT06.EHZ. 2021-12-15T19:35:54.16 0.3 undecidable manual P 213 20.5683 130 0.38 94
OT.OT07.EHZ. 2021-12-15T19:35:54.18 0.3 undecidable manual P 182 24.3534 124 -0.06 99
IV.MSAG.HHZ. 2021-12-15T19:35:53.82 0.3 undecidable manual P 134 20.5683 130 0.05 99
OT.OT14.EHZ. 2021-12-15T19:35:53.08 0.3 undecidable manual P 67 15.7731 139 -0.17 99
OT.OT05.EHZ. 2021-12-15T19:35:53.86 0.3 undecidable manual P 208 22.755 127 -0.19 96
OT.OT04.EHZ. 2021-12-15T19:35:53.60 0.3 undecidable manual P 223 18.3705 134 0.08 100
IV.SGRT.HHZ. 2021-12-15T19:35:52.85 0.3 undecidable manual P 174 9.5793 153 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MRB1.HHN. ML:2.3 0.0001885 0.94 AML other m 2021-12-15T19:36:09.23
IV.MRB1.HHE. ML:2.2 0.00016749999999999998 0.72 AML other m 2021-12-15T19:36:10.48
IV.SGRT.HHE. ML:0.9 0.000059351364499999995 0.128 AML other m 2021-12-15T19:35:56.20
IV.SGRT.HHN. ML:0.8 0.000041079505 0.1152 AML other m 2021-12-15T19:35:56.01
OT.OT14.EHE. ML:1.2 0.00009366815 0.1024 AML other m 2021-12-15T19:35:56.79
OT.OT14.EHN. ML:1.2 0.000105473975 0.0512 AML other m 2021-12-15T19:35:56.62
IV.MSAG.HHE. ML:0.7 0.0000228784645 0.0896 AML other m 2021-12-15T19:35:58.34
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