\n<\/p>\n
Weekly Highlights and Forecast, August 17, 2026, by NOAA Space Weather Prediction Center:<\/p>\n
Solar activity ranged from very low to low levels throughout the
period. No R1 (Minor) or greater events were observed. The largest
flare was a C8.2\/Sn at 16\/1928 UTC from Region 4506. An associated
CME was observed in LASCO C2 imagery following the C8.2 flare, but
analysis is ongoing in order to determine any Earth-directed component.
Other activity included the lift-off of av large filament near S16E22
at 14\/0332 UTC which produced a CME that is expected to arrive on 17-18 Aug. <\/p>\n
Geomagnetic field activity is expected to reach active levels on
17-18 Aug due to the anticipated arrival of a CME that left the Sun
on 14 Aug. Active conditions are expected again on 21-22 Aug and 04
Sep due to the influences of a CH HSS. Quiet and quiet to unsettled
conditions are expected to prevail throughout the remainder of the
outlook period. <\/p>\n
Weekly Commentary on the Sun, the Magnetosphere, and the Earth’s Ionosphere, August 13, 2026, by F. K. Janda, OK1HH:<\/p>\n
It appears that solar activity will remain relatively low for a few more days before mid-August; however, it is more likely that July s surprise will repeat itself and solar activity will increase after a few days. This would be a more favorable scenario for possible future developments in the Earth s ionosphere. Although the sporadic E layer often plays a significant role in the ionosphere at mid-latitudes, its season will gradually come to an end.<\/p>\n
Solar activity will rise in the second half of the month, while geomagnetic activity is expected to decrease on average. It is hard to imagine a better scenario for future developments, and it appears that this one will at least partially come to pass.<\/p>\n
The current solar report from Dr. Tamitha Skov, WX6SWW, can be found<\/span> The Predicted Planetary A Index for August 14 to August 20 is 5, 5, 5, 15, 12, 20, and 8 with a mean of 10. The Predicted Planetary K Index is 2, 2, 2, 4, 4, 5, and 3 with a mean of 3.1. Predicted 10.7 centimeter flux is 95, 95, 95, 100, 105, 105, and 105 with a mean of 100.<\/p>\n For more information concerning shortwave radio propagation, see<\/span>
on YouTube at, <\/span><\/span> <\/span>.<\/span><\/p>\n
http:\/\/www.arrl.org\/propagation\u00a0<\/span>and the ARRL Technical Information<\/span>
Service web page at,\u00a0<\/span><\/span>http:\/\/arrl.org\/propagation-of-rf-signals. For<\/span>
an explanation of numbers used in this bulletin, see<\/span>
http:\/\/arrl.org\/the-sun-the-earth-the-ionosphere\u00a0<\/span>. Information and<\/span>
tutorials on propagation can be found at,\u00a0<\/span><\/span>http:\/\/k9la.us\/\u00a0<\/span>.<\/span><\/p>\n