KL7J, updated
Any DX out there :-0
Link
Bz Note: When the IMF {sun's interplanetary magnetic field} and geomagnetic field lines {earths} are oriented opposite or "antiparallel" to each other [-Bz], they can 'merge' or 'reconnect' resulting in the transfer of energy, mass, and momentum from the solar wind flow to magnetosphere. The strongest coupling with the most dramatic magnetospheric effects occurs when the Bz component is oriented southward" [-Bz]. The HF propagation is usually negatively impacted during these events.
* Possible storm Pre and Post Enhancements *
Short term prediction. (Auroal zone represents South Central AK well).
Link
DX openings at higher MUF's during the increasing ionization before the upset magnetic field impacts the bands, or catch it on the down side with the magnetic field back normal before ionization decreases substantially. This is usually called pre-enhancement or post-enhancement and admittedly it is a bit intitutive regarding using what DX is being heard at lower latitudes, when in the changing conditions, and picking a band and heading for sometimes brief developing ionization and stellar results. There are also very seasonal paths and patterns for where we are in the 11 year+ cycles but it is a different dynamic and skill.
Long term Prediction (use Auroal row for S. Central AK)
Link
Link
Link
The MUF for any 1800 mile path can be determined by finding the midpoint (or half-way point) of the path and examining the MUF at that midpoint on the map by finding the labelled MUF contour value. All contours are given in MHz.
For 2400 mile paths, multiply the given contoured MUF values by 1.1. The MUF for the given 4,000 km path is then determined at the midpoint of the desired path.
For longer path lengths, divide the path into equal 1800 mile or 2400 mile segments and compute the MUFs corresponding to the two midpoints that are 900 miles or 1200 miles from each end of the path. Then select the lower of these two MUFs.
Link
To view earlier times, historical passes are Here
Link
Long Term
Link
Alaska sampling station is named COLLEGE above.
Link
This is a K=4 index level according to Univ of Alaska, Geophysical Institute.
Link
Link
KL7J - Soldotna, Alaska
kl7j at acsalaska.net