G2moderate

The geomagnetic storm of 10 – 11 June 1978

On 10 – 11 June 1978 the Kp index reached 6: a G2 (moderate) storm, with 6 hours at Kp 5 or more. At its peak the lights could be seen from 393,821 places in the atlas, down to about 49° magnetic latitude.

Kp 6Peak Kp · 10 June 1978 21:00 UT

6Hours at Kp 5 or more

80Largest ap

Solar cycle 21Year 3 of solar cycle 21

Kp every three hours

56789

9 Jun10 Jun11 Jun12 Jun

Where the lights could be seen

At Kp 6 the lights reach 393,821 places of the atlas on the horizon and 138,996 overhead, down to about 49° magnetic latitude.

Countries

Russia149,847 placesUnited States45,475 placesSweden27,876 placesFinland24,291 placesBelarus21,069 placesLithuania20,495 placesCanada19,497 placesUnited Kingdom14,039 placesNorway13,111 placesGermany11,974 places

At the edge: just within reach

HamburgGermanyColumbusUnited StatesIndianapolisUnited StatesSheffieldUnited KingdomLiverpoolUnited KingdomLipetskRussiaSzczecinPolandBryanskRussia

The largest towns that could see them

Before and after

Previous storm4 – 5 June 1978 · Kp 6+

Next storm21 June 1978 · Kp 5+

1978

Geomagnetic storms of 1978Every storm

Geomagnetic storms since 1932Geomagnetic storm archive

Strong storms at the same time of year

12 – 14 June 1990Kp 8+ · 48 h

10 – 14 June 1968Kp 8 · 66 h

8 – 13 June 1991Kp 8− · 102 h

13 June 1983Kp 8− · 18 h

6 – 7 June 1958Kp 8− · 15 h

12 – 13 June 2005Kp 7+ · 18 h