| 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 | 12h 01m | C | sudden | +23 | 126 | 12.8 | 76 | ||
| Memambetsu | 12h 01m | C | sudden | +27 | 132 | 16.9 | 39 | ||
| Kanoya | 12h 01m | C | sudden | +25 | 145 | 11.5 | 88 | ||
(*) 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 1 April 2026.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 1 April 2026.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 1 April 2026.
*) Plot diagram opens in a separate window.
| 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 | 15h 28m | 04d 15h | sudden | +43 | 126 | 9.5 | 64 | ||
| Memambetsu | 15h 28m | 04d 15h | sudden | +55 | 158 | 14.3 | 26 | ||
| Kanoya | 15h 28m | 04d 15h | sudden | +48 | 117 | 8.1 | 58 | ||
(*) 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 3 April 2026.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 3 April 2026.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 3 April 2026.
*) Plot diagram opens in a separate window.
| 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 | 02.8h m | 22d 00h | gradual | 131 | 11.9 | 52 | |||
| Memambetsu | 02.8h m | 22d 00h | gradual | 118 | 16 | 45 | |||
| Kanoya | 02.8h m | 22d 00h | gradual | 147 | 10.4 | 61 | |||
(*) 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 18 April 2026.
Plot of Memambetsu 1-minute geomagnetic field for the geomagnetic storm on 18 April 2026.
Plot of Kanoya 1-minute geomagnetic field for during the geomagnetic storm on 18 April 2026.
*) Plot diagram opens in a separate window.
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