[SFDXA] ARLP030 Propagation de K7RA

[Bmarx@bellsouth.net]

> SB PROP @ ARL $ARLP030
> ARLP030 Propagation de K7RA
> 
> ZCZC AP30
> QST de W1AW  
> Propagation Forecast Bulletin 30  ARLP030
> From Tad Cook, K7RA
> Seattle, WA  July 26, 2019
> To all radio amateurs 
> 
> SB PROP ARL ARLP030
> ARLP030 Propagation de K7RA
> 
> On Monday July 22 a new sunspot appeared, but just for one day. The
> magnetic signature showed it was from the current cycle 24.
> 
> Average daily solar flux increased insignificantly from 67 to 67.3
> this week.
> 
> Predicted solar flux is 68 for July 26 through August 1, then 67 on
> August 2 through September 8.
> 
> Predicted planetary A index is 8 on July 26 and 27, 5 on July 28
> through August 3, then 8, 15, 15 and 8 on August 4 to 7, 5 on August
> 8 to 18, 8 on August 19 and 20, 5 on August 21, 8 on August 22 to
> 24, 5 on August 25 to 30, then 8, 15, 15 and 8 on August 31 through
> September 3, and 5 on September 4 to 8.
> 
> Geomagnetic activity forecast for the period July 26 through August
> 21, 2019 from F. K. Janda, OK1HH.
> 
> "Geomagnetic field will be: 
> Quiet on August 2 and 3, 8, 13 and 14, 21 
> Quiet to unsettled on July 26 and 27, 29 to 31, August 1, 9, 15 to 18 
> Quiet to active on (July 28,) August 4, 7, (10 to 12,) 19 and 20
> Unsettled to active on August 5 and 6 
> Active to disturbed - none
> 
> Solar wind will intensify on August (2 and 3) 7 and 8, (9 to 14)
> 
> Parenthesis means lower probability of activity enhancement."
> 
> End of the current cycle, and beginning of the new one:
> 
> https://www.eurekalert.org/pub_releases/2019-07/ncfa-ot072319.php
> 
> Max White, M0VNG sent this, about the Solar Wind Composition
> Experiment during the Apollo 11 mission:
> 
> https://bit.ly/2y849cJ
> 
> The latest video from Dr. Tamitha Skov, WX6SWW.
> 
> https://youtu.be/Qbqku2_NgDg
> 
> 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 18 through 24, 2019 were 0, 0, 0, 0, 11, 0,
> and 0, with a mean of 1.6. 10.7 cm flux was 67, 66.7, 67, 67.7,
> 67.3, 67.4, and 67.8, with a mean of 67.3. Estimated planetary A
> indices were 3, 4, 3, 8, 8, 6, and 5, with a mean of 5.3. Middle
> latitude A index was 4, 3, 5, 9, 11, 7, and 5, with a mean of 6.3.
> NNNN
> /EX