NOAA / Space Weather Prediction Center

Geomagnetic Field Disturbances

Three-day Mid-Latitude Forecast

Mid-Latitude Geomagnetic ConditionsForecast Date
Apr 17
Apr 18
Apr 19
Probability of Active
20%
20%
5%
Probability of Minor Storm
5%
5%
1%
Probability of Major (Severe) Storm
1%
1%
1%


Three-day High-Latitude Forecast:

High-Latitude Geomagnetic ConditionsForecast Date
Apr 17
Apr 18
Apr 19
Probability of Active
15%
15%
15%
Probability of Minor Storm
25%
25%
15%
Probability of Major (Severe) Storm
25%
25%
5%


Three-Day Planetary K Index Forecast

Planetary K
Forecast Date
Forecast Hours (UTC)
00-0303-0606-0909-1212-1515-1818-2121-24
Apr 17
2
2
2
2
1
1
2
3
Apr 18
3
2
2
2
1
1
2
3
Apr 19
2
1
1
1
1
1
2
2


Past 3-days Planetary K Index

Plot of past 3 days of Kp Index

Current alerts of geomagnetic disturbances