so ive been on 20m and 17m pretty regularly the past few weeks and something feels off. like some evenings the band is absolutely dead and then out of nowhere i work a JA station with a 59 report like its nothing. then the next day same time same freq and i cant even hear europe. been doing this long enough to know bands fluctuate but this feels more erratic than usual.

i started checking the solar flux index more carefully and its been bouncing around a lot, saw it go from like 140 down to 112 in just a few days. does that kind of drop normally cause that much inconsistency or is there something else going on? also noticed some geomagnetic storm warnings on the space weather sites but honestly i still dont fully understand how that affects HF differently than solar flux does. any of you guys been catching any good DX windows lately or is it just me having inconsistent luck

yeah the flux dropping like that will definitely mess with your higher bands, 17m especially seems sensitive to it in my experience. but honestly the geomagnetic stuff is what really kills DX for me more than solar flux alone. when the Kp index spikes above like 4 or 5 i pretty much just give up on anything polar path and sometimes even mid-latitude paths get weird and choppy.

what i usually do now is check both the flux number and the Kp together before deciding where to spend my evening. there are a few websites that show the band condition estimates in near real time, DXMaps and the propagation tools on hamqsl are what i use most. you can actually see spots coming in and get a feel for whether a path is open before you even key up. sounds like you caught one of those short sporadic openings on the JA path, those can happen even when overall conditions are mediocre, just gotta be in the right place at the right time basically.

im pretty new to HF, only been licensed about eight months, and this whole solar flux thing still confuses me a lot. like i get that higher numbers are generally better but i worked my first European station last week when the flux was only around 118 and i thought conditions were supposed to be bad. was on 15m in the afternoon and the guy came booming in. is that normal or did i just get lucky with like a specific propagation path opening up or something?