Auroral kilometric radiation (AKR) mainly comes from cyclotron radiation from electrons orbiting around the magnetic field lines of the Earth. The AKR has a frequency of between 50 and 500 kHz and a total power of between about 1 million and 10 million watts. The radiation is highly absorbed by the ionosphere and therefore can mainly be measured by satellites positioned at vast heights but the article ‘Ground-level detection of auroral kilometric radiation‘ published by James LaBelle and Roger R. Anderson in 2011 proves it could be also mesured on the Eart.
<AUR>.Sunspots
| Regions with Sunspots | |||
| Region | # of Spots | Mag Type | |
| 2710 | 02 | Beta | |
| H-alpha Plages without Spots | |||
| Region | |||
| None | |||
| Regions Due to Return 22 May to 24 May | |||
| Region | |||
| None | |||
<AUR>.Alert
<AUR>.Alert.Subscriberlast message issued over 188hrs ago
Space Weather Message Code: WATA20
Serial Number: 828
Issue Time: 2018 May 14 1928 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
May 15: None (Below G1) May 16: None (Below G1) May 17: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
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.
Forecast Discussion
Weekly Highlights and Forecasts
Solar Weather Overview
Latest Space Weather Storm
<AUR>.DX-Cluster Statistics
Knowledge Database
Source: http://www.noaa.gov
