NOAA / Space Weather Prediction Center

Geomagnetic Field Disturbances

Three-day Mid-Latitude Forecast

Mid-Latitude Geomagnetic ConditionsForecast Date
Oct 21
Oct 22
Oct 23
Probability of Active
30%
25%
25%
Probability of Minor Storm
15%
10%
10%
Probability of Major (Severe) Storm
1%
1%
1%


Three-day High-Latitude Forecast:

High-Latitude Geomagnetic ConditionsForecast Date
Oct 21
Oct 22
Oct 23
Probability of Active
10%
15%
15%
Probability of Minor Storm
25%
30%
30%
Probability of Major (Severe) Storm
45%
40%
40%


Three-Day Planetary K Index Forecast

Planetary K
Forecast Date
Forecast Hours (UTC)
00-0303-0606-0909-1212-1515-1818-2121-24
Oct 21
5
4
3
3
3
3
3
3
Oct 22
3
3
4
3
3
3
2
3
Oct 23
3
2
2
3
3
3
3
3


Past 3-days Planetary K Index

Plot of past 3 days of Kp Index

Current alerts of geomagnetic disturbances