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Geomagnetic storm information (November 1999)


yGeomagnetic storm observed on 7 November 1999z
Observatory Commencing time Ending time Geomagnetic field Geoelectric field
Type (sudden/gradual) Amplitude of abrupt onset H (nT)
‚g(nT)
Range Range
Hour Minute
(UTC)
Date Time
(UTC)
Horizontal component
H (nT)
Declination
D (arcminute)
Vertical component
Z (nT)
East-west component
(mV/km)
North-south component
(mV/km)
Kakioka 00.3h m 09d 24h gradual 116 -1 58 137 25
Memambetsu 00.3h m 09d 24m gradual 117 -1 31 14 44
Kanoya 00.3h m 09d 24h gradual 139 -1 56

(*) Time is in UTC (Universal Time Coordinated).
(*) Time is given in 1-minute increments for the sudden commencement type and in 0.1-hour increments for the gradual commencement type.
(*) "-1" is displayed for the range, when it is unknown due to missing measurements, etc.
(*) The range may not be determined for a storm which is followed by the next one before its ending (the ending time is indicated by "C").


Plot of Kakioka 1-minute geomagnetic field for the geomagnetic storm on 7 November 1999.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 7 November 1999.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 7 November 1999.

*) Plot diagram opens in a separate window.



yGeomagnetic storm observed on 16 November 1999z
Observatory Commencing time Ending time Geomagnetic field Geoelectric field
Type (sudden/gradual) Amplitude of abrupt onset H (nT)
‚g(nT)
Range Range
Hour Minute
(UTC)
Date Time
(UTC)
Horizontal component
H (nT)
Declination
D (arcminute)
Vertical component
Z (nT)
East-west component
(mV/km)
North-south component
(mV/km)
Kakioka 08.3h m 16d 24h gradual 80 -1 42 115 17
Memambetsu 08.3h m 16d 24m gradual 80 -1 16 10 32
Kanoya 08.3h m 16d 24h gradual 92 -1 46

(*) Time is in UTC (Universal Time Coordinated).
(*) Time is given in 1-minute increments for the sudden commencement type and in 0.1-hour increments for the gradual commencement type.
(*) "-1" is displayed for the range, when it is unknown due to missing measurements, etc.
(*) The range may not be determined for a storm which is followed by the next one before its ending (the ending time is indicated by "C").


Plot of Kakioka 1-minute geomagnetic field for the geomagnetic storm on 16 November 1999.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 16 November 1999.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 16 November 1999.

*) Plot diagram opens in a separate window.



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