NOAA / Space Weather Prediction Center

Geomagnetic Field Disturbances

Three-day Mid-Latitude Forecast

Mid-Latitude Geomagnetic ConditionsForecast Date
Sep 01
Sep 02
Sep 03
Probability of Active
20%
15%
15%
Probability of Minor Storm
5%
1%
1%
Probability of Major (Severe) Storm
1%
1%
1%


Three-day High-Latitude Forecast:

High-Latitude Geomagnetic ConditionsForecast Date
Sep 01
Sep 02
Sep 03
Probability of Active
15%
15%
15%
Probability of Minor Storm
20%
15%
15%
Probability of Major (Severe) Storm
20%
10%
10%


Three-Day Planetary K Index Forecast

Planetary K
Forecast Date
Forecast Hours (UTC)
00-0303-0606-0909-1212-1515-1818-2121-24
Sep 01
3
4
3
3
2
2
1
2
Sep 02
2
3
2
2
2
2
2
2
Sep 03
2
2
3
2
2
1
2
2


Past 3-days Planetary K Index

Plot of past 3 days of Kp Index

Current alerts of geomagnetic disturbances