‰ Now 18 WPM transition file follows ‰

Last weeks bulletin opened with your author, me, moaning about a
decline in solar activity, but this was short lived. The current
week saw average daily sunspot numbers more than double, rising from
60.1 to 144.3, and average daily solar flux rise from 104.1 to
146.4. In addition, on June 12 the daily sunspot number was 196, and
solar flux was 174.5. It actually was not long ago when sunspot
numbers were last at that level. April 16 to 19, 2014 had numbers
ranging from 245 to 296.  Predicted values are also up. The latest
has solar flux at 170, 165 and 155 on June 13 to 15, 145 on June 16
to 18, 140 on June 19, 130 on June 20 and 21, then reaching down for
a low of 110 on June 24 and 25, then peaking at 165 on July 8. The
outlook for Field Day Weekend has brightened, with solar flux at 115
on June 27 and 28 and 120 on Sunday, June 29.  Predicted planetary A
index is 18, 20, 10 and 8 on June 13 to 16, 5 on June 17, 8 on June
18, 5 on June 19 to 24, 8 on June 25 and 26, 5 on June 27 through
July 5, 15 on July 6, 5 on July 7 to 9, 8 on July 10, 5 on July 11
to 14, and 8 on July 15 and 16.  OK1HH predicts mostly quiet
geomagnetic conditions on June 13, quiet to active June 14, quiet to
unsettled June 15, quiet June 16 to 18, quiet to active June 19,
quiet to unsettled June 20, mostly quiet June 21, quiet June 22 to
24, mostly quiet June 25, quiet to active June 26, active to
disturbed June 27, quiet to unsettled June 28, quiet on June 29,
quiet to active June 30, mostly quiet July 1 and 2, quiet to
unsettled July 3 and 4, quiet July 5, quiet to unsettled July 6,
active to disturbed July 7, quiet to active July 8, and mostly quiet
July 9.  Again this week there was an interruption in data from the
middle latitude geomagnetic observatory in Fredericksburg, Virginia,
so the middle latitude A index numbers at the end of this bulletin
for June 8 and 9 are my own guesses.  We saw a lot of geomagnetic
activity over last weekend, June 8 and 9, when the planetary K index
reached 6 in two 3 hour periods, and the planetary A index was 13 on
Saturday, then 39 on Sunday. This geomagnetic storm was from a CME
which hit Earth at 1630 UTC on June 7, but left the Sun on June 4.
A significant solar flare on June 10 could cause polar geomagnetic
storms today, Friday June 13. It will probably deliver a glancing
blow to Earths magnetic field. See //earthsky.org/space/ for an
article about the June 10 flare, and //www.upi.com/ for a UPI story
on possible effects today.  Sunspot numbers were 102, 132, 155, 144,
152, 149, and 176, with a mean of 144.3. 10.7 cm flux was 110.5,
133, 136.7, 148.6, 161.2, 166.2, and 168.4, with a mean of 146.4.
Estimated planetary A indices were 7, 6, 13, 39, 5, 7, and 7, with a
mean of 12. Estimated mid latitude A indices were 7, 5, 14, 40, 6,
7, and 8, with a mean of 12.4.

‰ End of 18 WPM transition file ‰