G1minor

The geomagnetic storm of 19 January 1938

On 19 January 1938 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 · 19 January 1938 15:00 UT

3Hours at Kp 5 or more

48Largest ap

Solar cycle 17Year 5 of solar cycle 17

Kp every three hours

56789

18 Jan19 Jan20 Jan

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 storm16 – 18 January 1938 · Kp 8+

Next storm20 – 22 January 1938 · Kp 8+

1938

Geomagnetic storms of 1938Every storm

Geomagnetic storms since 1932Geomagnetic storm archive

Strong storms at the same time of year

19 – 21 January 2026Kp 9− · 42 h

21 – 22 January 1957Kp 9− · 24 h

21 – 22 January 2005Kp 8 · 15 h

17 – 19 January 2005Kp 8− · 57 h

17 – 18 January 1955Kp 8− · 21 h

22 – 24 January 2004Kp 7 · 33 h