看看最近的黑子情况：
solar update
tad "like the bright spots that move about the sun" cook, k7ra, this week reports: sweet memories of the 11-day run of sunspots toward the end of last month are fading, and so far, the days of zero sunspots are at six, with the last sunspot seen on october 1. a peek at the latest stereo images shows two active areas in our sun's southern hemisphere beyond our direct view, but it is hard to tell if these will emerge as sunspots when they appear over the eastern limb. a rough guess has the first one possibly emerging around october 10, with the second around a week later. currently, the solar flux forecast shows flux values lower then 70 through october 15, then around 72 during the two-week period from october 16-30. the same noaa/usaf forecast predicts the same very quiet geomagnetic conditions that we've seen for some time, with planetary a index around 5. two very small increases are predicted for october 11-12 -- with an a index of 7 -- and october 24-25, with the a index at 8. average sunspot numbers for the week dropped 15.3 points below the september 24-30 period, and the average daily solar flux for the week declined 2.2 points to 70.5. we'll also go over some e-mail about propagation via ground fog -- mentioned in last week's bulletin -- in the solar update, available on the arrl web site on friday, october 9. for more information concerning radio propagation, visit the arrl technical information service propagation page. this week's "tad cookism" brought to you by john keats' to my brother george.
