G1minor

The geomagnetic storm of 29 July 1979

On 29 July 1979 the Kp index reached 5: a G1 (minor) storm, with 3 hours at Kp 5 or more. At its peak the lights could be seen from 280,376 places in the atlas, down to about 51° magnetic latitude.

Kp 5Peak Kp · 29 July 1979 18:00 UT

3Hours at Kp 5 or more

48Largest ap

Solar cycle 21Year 4 of solar cycle 21

Kp every three hours

56789

28 Jul29 Jul30 Jul

Where the lights could be seen

At Kp 5 the lights reach 280,376 places of the atlas on the horizon and 80,365 overhead, down to about 51° magnetic latitude.

Countries

Russia119,505 placesSweden27,876 placesFinland24,291 placesUnited States22,332 placesCanada17,756 placesLithuania16,991 placesNorway13,111 placesLatvia7,542 placesUnited Kingdom7,329 placesBelarus6,984 places

At the edge: just within reach

ChicagoUnited StatesUfaRussiaDetroitUnited StatesVilniusLithuaniaUlyanovskRussiaRyazanRussiaVitebskBelarusBelfastUnited Kingdom

The largest towns that could see them

Before and after

Previous storm27 July 1979 · Kp 5−

Next storm1 August 1979 · Kp 5−

1979

Geomagnetic storms of 1979Every storm

Geomagnetic storms since 1932Geomagnetic storm archive

Strong storms at the same time of year

26 – 27 July 1946Kp 9 · 21 h

26 – 27 July 2004Kp 9− · 27 h

26 – 27 July 1961Kp 8+ · 24 h

24 – 26 July 2004Kp 8 · 36 h

30 – 31 July 1999Kp 8− · 18 h

28 – 29 July 1990Kp 8− · 39 h