Space Weather for Aviation Service Providers
NOAA National Weather Service Space Weather Prediction Center

24 hour Forecast issued May 25 1800 UTC, Geophysical Alert Message Solar-terrestrial indices for 24 May follow. Solar flux 127 and estimated planetary A-index 20. The estimated planetary K-index at 1800 UTC on 25 May was 5. Space weather for the past 24 hours has been minor. Geomagnetic storms reaching the G1 level occurred. Solar radiation storms reaching the S1 level occurred. Space weather for the next 24 hours is predicted to be minor. Geomagnetic storms reaching the G1 level are expected. Latest 3-day Solar Weather Forecast

NOAA Scales Activity NOAA Scale Past 24 hours Current Geomagnetic Storms Solar Radiation Storms Radio Blackouts

POES Auroral Activity Estimate Effects: HF Radio propagation, Aurora boundaries

SDO - HMI Intensitygram Image courtesy NASA SDO

Global D-Region Absorption Prediction Effects: HF Radio communications

Estimated Planetary K-index Effects: HF Radio propagation

GOES-15 Proton Flux Effects: HF Radio communications, Indicator of radiation risk

GOES X-ray Flux Effects: HF Radio communications

Last page update 2013 May 25 1948 UTC. This page automatically reloads every minute but not all displays are created at that rate. See User Guide for individual display update rates. Note: use browser Reload when returning to this page to ensure latest data.

The Space Weather Prediction Center (SWPC) Space Weather for Aviation Service Providers web site is designed for the aviation community to communicate space weather information in terms that are easy to interpret and understand. Solar events can have a detrimental impact on airlines and ground equipment. Space weather storms can result in lost or degraded communications, unreliable navigational equipment, flight-critical electronic system problems, and radiation hazards to crew and passengers.

Displays show the most recent data available at SWPC. See the sample web page which shows how the page looked during the high solar activity in September 2005. See Data and Products for earlier data.

The Space Weather for Aviation Service Providers web page is described in its Product Description Document. The Feedback Form can be used for comments, questions and suggestions. SWPC.CustomerSupport@noaa.gov