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Space Weather Prediction Center National Oceanic and Atmospheric Administration Thursday, May 21, 2026 at 23:58:18 UTC Main navigation Home About Space Weather Impacts Electric Power Transmission GPS Systems HF Radio Communications Satellite Communications Satellite Drag Partners and Stakeholders Commercial Service Providers Federal Agencies International Organizations International Service Providers Space Weather Research Phenomena Aurora Coronal Holes Coronal Mass Ejections Earth's Magnetosphere F10.7 cm Radio Emissions Galactic Cosmic Rays Geomagnetic Storms Ionosphere Ionospheric Scintillation Radiation Belts Solar EUV Irradiance Solar Flares (Radio Blackouts) Solar Radiation Storm Solar Wind Sunspots/Solar Cycle Total Electron Content Additional Info NOAA Space Weather Scales Customer Needs & Requirements Study Products and Data Forecasts 27-Day Outlook of 10.7 cm Radio Flux and Geomagnetic Indices 3-Day Forecast 3-Day Geomagnetic Forecast Forecast Discussion Predicted Sunspot Numbers and Radio Flux Report and Forecast of Solar and Geophysical Activity Solar Cycle Progression Space Weather Advisory Outlook 45-Day Ap and F10.7cm Flux Forecast Weekly Highlights and 27-Day Forecast Reports Forecast Verification Geophysical Alert Solar and Geophysical Event Reports Models Aurora - 30 Minute Forecast D Region Absorption Predictions (D-RAP) Geoelectric Field Models (US Canada 1D & 3D EMTF CONUS) Geospace Geomagnetic Activity Plot Geospace Ground Magnetic Perturbation Maps Geospace Magnetosphere Movies GloTEC Relativistic Electron Forecast Model SEAESRT STORM Time Empirical Ionospheric Correction WSA-Enlil Solar Wind Prediction WAM-IPE Observations Boulder Magnetometer Coronagraph GOES Electron Flux GOES Magnetometer GOES Proton Flux GOES Solar Ultraviolet Imager (SUVI) GOES X-ray Flux LASCO Coronagraph Planetary K-index Real Time Solar Wind Satellite Environment Solar Synoptic Map Space Weather Overview Station K and A Indices Summaries Solar & Geophysical Activity Summary Solar Region Summary Summary of Space Weather Observations Alerts, Watches and Warnings Alerts, Watches and Warnings Notifications Timeline Experimental ACE Real-Time Solar Wind Aurora for Tonight and Tomorrow Night International Civil Aviation Organization (ICAO) Space Weather Advisory Solar TErrestrial RElations Observatory (STEREO) Data Access Archived Space Weather Products Archived SWPC Reports, forecasts, summaries, models, and non-noaa observations Dashboards Aurora Aviation Electric Power Emergency Management Global Positioning System Radio Satellites Space Weather Enthusiasts Dashboard Media and Resources Education and Outreach Additional Resources Glossary News Archive Newsroom Testbed Subscribe Workshop Feedback https://services.swpc.noaa.gov Space Weather Conditions 24-Hour Observed Maximums Predicted 2026-05-21 UTC R1-R2 25% R3-R5 5% S1 or greater 5% Predicted 2026-05-22 UTC R1-R2 25% R3-R5 5% S1 or greater 5% Predicted 2026-05-23 UTC R1-R2 25% R3-R5 5% S1 or greater 5% Current Space Weather Conditions R1 (Minor) Radio Blackout Impacts HF Radio: Weak or minor degradation of HF radio communication on sunlit side, occasional loss of radio contact. Navigation: Low-frequency navigation signals degraded for brief intervals. More about the NOAA Space Weather Scales The requested page could not be found.

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