Aurora & Space WeatherGeomagnetic activity in 1937
Mean Ap12.4
G1+71days
G3+13days
G50days
G1+ days by month
- January 1937
- February 1937
- March 1937
- April 1937
- May 1937
- June 1937
- July 1937
- August 1937
- September 1937
- October 1937
- November 1937
- December 1937
Nearby years (G1+ days)
68
58
37
55
50
71
95
103
88
100
92
Top 10 days by Ap
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 28 Apr 1937 | 8o | 128 | G4 |
| 22 Aug 1937 | 8o | 74 | G4 |
| 25 Apr 1937 | 7+ | 72 | G3 |
| 4 Oct 1937 | 8- | 71 | G4 |
| 26 Apr 1937 | 8+ | 67 | G4 |
| 5 May 1937 | 7o | 65 | G3 |
| 27 Apr 1937 | 7o | 61 | G3 |
| 3 Feb 1937 | 7- | 56 | G3 |
| 31 Mar 1937 | 7+ | 53 | G3 |
| 28 May 1937 | 6- | 50 | G2 |
Dates and time slots are UTC. Kp is the 3-hourly planetary geomagnetic index (0–9); Ap is the daily average disturbance. G1–G5 follow the NOAA storm scale (Kp 5- and above counted as G1). Aurora visibility also depends on weather and location. The latest values are preliminary.
About this page
1937 had 71 G1+ storm days (No. 48 of 95 years) and 13 G3+ days.