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


24 hour Forecast issued Aug 28 0000 UTC, Geophysical Alert Message

Solar-terrestrial indices for 27 August follow.
Solar flux 123 and estimated planetary A-index 20.
The estimated planetary K-index at 0000 UTC on 28 August was 4.

No space weather storms were observed for the past 24 hours.

Space weather for the next 24 hours is predicted to be moderate.
Geomagnetic storms reaching the G2 level are likely.

Latest 3-day Solar Weather Forecast

NOAA Scale
Geomagnetic Storms
Solar Radiation Storms
Radio Blackouts


POES Auroral Activity Estimate
Latest POES auroral activity estimate
Effects: HF Radio propagation, Aurora boundaries
SDO - HMI Intensitygram
Latest SDO - HMI Intensitygram
Image courtesy NASA SDO
Global D-Region Absorption Prediction
Latest Global D-Region Absorption Prediction map
Effects: HF Radio communications

Estimated Planetary K-index
Latest Estimated Planetary Kp plot
Effects: HF Radio propagation
 
GOES-15 Proton Flux
Latest GOES Proton plot
Effects: HF Radio communications,
Indicator of radiation risk
GOES X-ray Flux
Latest GOES Xray Flux plot
Effects: HF Radio communications
 

Space Weather Alerts of interest to Aviation users, issued in past 24 hours
Issue Time Type Details
Aug 27 1242 UTC WATCH: Geomagnetic Storm Category G2 Predicted Highest Storm Level Predicted by Day:
Aug 28: G2 (Moderate) Aug 29: None (Below G1) Aug 30: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
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.

Last page update 2014 Aug 28 0304 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


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