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Space Weather Indices

Measurements of Solar Activity, Aurora, and Other Phenomena.

The strength of present solar X-Ray emisions and geomagnetic field conditions:

Solar X-Rays solar x rays
Geomagnetic Field geomagnetic disturbances
Solar wind speed and magnetic orientation Northern hemispheric aurora Southern hemispheric aurora

Present Solar Wind Data

Northern Auroral Oval

Souththern Auroral Oval

Expect good HF propagation when solar wind indications are in the green. When the solar wind magnetic field Bz component goes south and the solar wind speed increases beyond 600 kilometers per second, consider going up on VHF for some auroral DX. HF conditions are likely to be poor on any paths traversing the polar regions. Daytime trans-equatorial paths may be less affected.



Mauna Loa Solar Observatory Image

The latest Mauna Loa Solar Observatory Image (Hydrogen Alpha Light).

 

Present state of the solar cycle

Solar Cycle 24:

The sunspot cycle seems to be off to a slow start, though the Space Weather Prediction Center
is optimistic - look at the steep red curve in the sunspot number chart! The sun is presently
alternating between either a few spots, or clean. The higher HF bands have been pretty barren
as a result.



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