Although geomagnetic storms are generally bad for HF propagation, there can be an enhancement at the beginning of a storm. That's what happened today and can be

Although geomagnetic storms are generally bad for HF propagation, there can be an enhancement at the beginning of a storm. That's what happened today and can be seen in this plot of the Boulder foF2 (the maximum frequency returned from directly overhead). https://www.ngdc.noaa.gov/stp/IONO/rt-iono/realtime/BC840_foF2.png https://www.ngdc.noaa.gov/stp/IONO/rt-iono/realtime/BC840_fo... At 22:05Z, the 3000km MUF (Maximum Usable Frequency) was 31.9 MHz. https://lgdc.uml.edu/common/ShowIonogramPage?mid=48624089&ursiCode=BC840&time=2022.08.17%2022:10:05.000 https://lgdc.uml.edu/common/ShowIonogramPage?mid=48624089&ur... Comparing with the previous day, you can see that the ionosphere is much stronger (at least over Boulder) today. https://lgdc.uml.edu/common/ShowIonogramPage?mid=48612891&ursiCode=BC840&time=2022.08.16%2022:10:05.000 https://lgdc.uml.edu/common/ShowIonogramPage?mid=48612891&ur...