Space Weather
From NOAA Space Weather Prediction Center, refreshed every 15 minutes.
0.00
Kp index
Quiet
Solar wind
317 km/s
Aurora · north
0%
Aurora · south
0%
Active alerts
Electron 2MeV Integral Flux exceeded 1000pfu
April 17, 2026 7:31 AM UTC
minor
Electron 2MeV Integral Flux exceeded 1000pfu
April 17, 2026 7:31 AM UTC
Space Weather Message Code: ALTEF3 Serial Number: 3678 Issue Time: 2026 Apr 17 0731 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3677 Begin Time: 2026 Apr 03 0920 UTC Yesterday Maximum 2MeV Flux: 2407 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geomagnetic Storm Category G1 Predicted
April 16, 2026 10:09 PM UTC
moderate
Geomagnetic Storm Category G1 Predicted
April 16, 2026 10:09 PM UTC
Space Weather Message Code: WATA20 Serial Number: 1108 Issue Time: 2026 Apr 16 2209 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Apr 17: G2 (Moderate) Apr 18: G2 (Moderate) Apr 19: G1 (Minor) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Electron 2MeV Integral Flux exceeded 1000pfu
April 16, 2026 1:23 PM UTC
minor
Electron 2MeV Integral Flux exceeded 1000pfu
April 16, 2026 1:23 PM UTC
Space Weather Message Code: ALTEF3 Serial Number: 3677 Issue Time: 2026 Apr 16 1323 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3676 Begin Time: 2026 Apr 03 0920 UTC Yesterday Maximum 2MeV Flux: 3248 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geomagnetic Storm Category G2 Predicted
April 15, 2026 9:43 PM UTC
moderate
Geomagnetic Storm Category G2 Predicted
April 15, 2026 9:43 PM UTC
Space Weather Message Code: WATA30 Serial Number: 271 Issue Time: 2026 Apr 15 2143 UTC WATCH: Geomagnetic Storm Category G2 Predicted Highest Storm Level Predicted by Day: Apr 16: None (Below G1) Apr 17: G2 (Moderate) Apr 18: G2 (Moderate) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Electron 2MeV Integral Flux exceeded 1000pfu
April 15, 2026 7:56 AM UTC
minor
Electron 2MeV Integral Flux exceeded 1000pfu
April 15, 2026 7:56 AM UTC
Space Weather Message Code: ALTEF3 Serial Number: 3676 Issue Time: 2026 Apr 15 0756 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3675 Begin Time: 2026 Apr 03 0920 UTC Yesterday Maximum 2MeV Flux: 1705 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.