Aurora Forecast

The K-index quantifies disturbances in the horizontal component of earth’s magnetic field with an integer in the range 0–9 with 1 being calm and 5 or more indicating a geomagnetic storm. It is derived from the maximum fluctuations of horizontal components observed on a magnetometer during a three-hour interval.

The official planetary Kp-index is derived by calculating a weighted average of K-indices from a network of geomagnetic observatories. Since these observatories do not report their data in real-time, various operations centers around the globe estimate the index based on data available from their local network of observatories. The Kp-index was introduced by Bartels in 1939.

Today

00-03h

4

03-06h

3

06-09h

1

09-12h

1

12-15h

1

15-18h

2

18-21h

2

21-00h

2

Tomorrow

00-03h

2

03-06h

2

06-09h

1

09-12h

1

12-15h

1

15-18h

2

18-21h

3

21-00h

4

Day After Tomorrow

00-03h

5

03-06h

4

06-09h

4

09-12h

3

12-15h

3

15-18h

2

18-21h

2

21-00h

3

27 Day Aurora Forecast

Mar 01

5

Mar 02

4

Mar 03

3

Mar 04

2

Mar 05

2

Mar 06

4

Mar 07

2

Mar 08

2

Mar 09

2

Mar 10

2

Mar 11

2

Mar 12

4

Mar 13

4

Mar 14

2

Mar 15

4

Mar 16

3

Mar 17

2

Mar 18

5

Mar 19

5

Mar 20

4

Mar 21

4

Mar 22

3

Mar 23

3

Mar 24

2

Mar 25

2

Mar 26

2

Mar 27

2