[SFDXA] ARLP031 Propagation de K7RA

[Bmarx@bellsouth.net]

> SB PROP @ ARL $ARLP031
> ARLP031 Propagation de K7RA
> 
> ZCZC AP31
> QST de W1AW  
> Propagation Forecast Bulletin 31  ARLP031
> From Tad Cook, K7RA
> Seattle, WA  August 2, 2019
> To all radio amateurs 
> 
> SB PROP ARL ARLP031
> ARLP031 Propagation de K7RA
> 
> No sunspots were observed over the past week, and solar flux remains
> flat, with average daily values declining from 67.3 to 67.
> 
> Average daily planetary A index went from 5.3 to 5, and middle
> latitude A index from 6.3 to 5.9.
> 
> Predicted solar flux for the next 45 days remains at 67, August 2
> through September 15, every day.
> 
> Predicted planetary A index is 5 on August 2 and 3, then 8, 18, 15,
> 12 and 8 on August 4 to 8, 5 on August 9 to 16, 8 on August 17 and
> 18, 5 on August 19 to 26, then 8, 16, 8, 5, 8, 22 and 16 on August
> 27 through September 2, 5 on September 3 to 12, 8 on September 13
> and 14, and 5 on August 15.
> 
> Geomagnetic activity forecast for the period August 2 to 28, 2019
> from F. K. Janda, OK1HH.
> 
> "Geomagnetic field will be:  
> Quiet on August 2 and 3, 8, 12 to 15, 21 and 22  
> Quiet to unsettled on August 9, 16 and 17, 23, 25  
> Quiet to active on August 4 and 5, 7, (10 and 11,) 19 and 20, 24, 28  
> Unsettled to active on August 6, (18, 26 and 27)  
> Active to disturbed-None! 
> 
> Solar wind will intensify on August (2 and 3,) 6-8, (9 and 14,) 27
> and 28
> 
> Parenthesis means lower probability of activity enhancement."
> 
> Spaceweather.com reminds us, "BE ALERT FOR PERSEID FIREBALLS:  Earth
> is entering a stream of debris from giant Comet Swift-Tuttle, source
> of the annual Perseid meteor shower. Forecasters say the shower
> won't peak until Aug. 12 and 13, but already NASA cameras are
> catching Perseid fireballs streaking over the USA. The Perseids
> produce more fireballs than any other annual shower--largely due to
> the size of the parent comet--so your chances of seeing one are
> good."
> 
> Larry Koziel, K8MU sent this, about simulating the sun in a lab:
> 
> https://bit.ly/2LQLP0N
> 
> Larry and several others including Max White, M0VE reported recently
> about solar tsunamis:
> 
> https://bit.ly/2OvhlDr
> 
> George, N2CG in Saddle Brook, New Jersey wrote on July 29:
> 
> "So far this year's Summer E's Season daily NA to Europe 6m FT8 mode
> openings have mostly bypassed the FN20 and adjacent grids and
> favoring the NA South East (especially grids EL and EM) as seen
> daily on the DXMAPS Website.
> 
> Whatever EU openings I did manage to work so far were short lived
> lasting just a few minutes to 20 minutes at best.
> 
> However that changed on Sunday July 28, 2019 beginning around 2100
> UTC in the NA South East Coast area and around 2200 UTC at my NJ QTH
> FN20wv when primarily Finland with a few Sweden and Norway stations
> came in with very good FT8 mode signals for over an hour. I managed
> to decode the following stations: OH2MA, OH2FQV, OH2FNR, OH3XF,
> LA2XPA and SM3CCM and I worked OG2M, OH3SR and OH3XA. This was my
> very first time working Finland on 6m and shortly after my QSO with
> OH3SR he verified our QSO on LoTW!
> 
> August will bring the prime 6m E's Season to a close. However, maybe
> the 6m gods have another surprise opening before the end of the
> season."
> 
> The latest from WX6SWW:
> 
> https://youtu.be/UpyFOZLacvw
> 
> If you would like to make a comment or have a tip for our readers,
> email the author at, k7ra at arrl.net.
> 
> For more information concerning radio propagation, see the ARRL
> Technical Information Service at
> http://arrl.org/propagation-of-rf-signals. For an explanation of
> numbers used in this bulletin, see
> http://arrl.org/the-sun-the-earth-the-ionosphere.
> 
> An archive of past propagation bulletins is at
> http://arrl.org/w1aw-bulletins-archive-propagation. More good
> information and tutorials on propagation are at http://k9la.us/.
> 
> Monthly propagation charts between four USA regions and twelve
> overseas locations are at http://arrl.org/propagation.
> 
> Instructions for starting or ending email distribution of ARRL
> bulletins are at http://arrl.org/bulletins.
> 
> Sunspot numbers for July 25 through 31, 2019 were 0, 0, 0, 0, 0, 0,
> and 0, with a mean of 0. 10.7 cm flux was 68.2, 67.6, 66.7, 67.1,
> 66.1, 66.2, and 66.9, with a mean of 67. Estimated planetary A
> indices were 3, 3, 4, 4, 5, 8, and 8 with a mean of 5. Middle
> latitude A index was 3, 4, 4, 7, 5, 8, and 10, with a mean of 5.9.
> NNNN
> /EX