QST de W1AW
Propagation Forecast Bulletin 27 ARLP027
From Tad Cook, K7VVV
Seattle, WA June 29, 2001
To all radio amateurs
SB PROP ARL ARLP027
ARLP027 Propagation de K7VVV
Problems with the PC and DSL connection mean a short bulletin for this week.
Conditions were good over Field Day weekend, with no big geomagnetic upsets. 40 meters was probably the best band all around for Field Day contacts.
Sunspots and solar flux have been high recently, but both are currently declining. Average sunspot numbers dropped over 48 points from last week, and average solar flux was off nearly 17 points.
Currently geomagnetic conditions are very quiet, and are expected to remain that way over the next week. Single digit planetary A indices are forecast until after July 4. Solar flux is expected to decline over the next few days, to 130 on Saturday, Sunday and Monday. Flux is expected to rise to 160 by July 6 and 190 by July 11.
Sunspot numbers for June 21 through 27 were 212, 203, 228, 212, 220, 177 and 185 with a mean of 205.3. 10.7 cm flux was 200.3, 203.6 206.2, 194.8, 182.4, 167.9 and 147.9, with a mean of 186.2, and estimated planetary A indices were 13, 7, 8, 10, 8, 13 and 10 with a mean of 9.9.