According
to Spaceweather.com, as of June 5 there have been no sunspots
for 17 days in a row. Average daily solar flux went to 69.5 this reporting week
(May 30 through June 5) from 67.4 in the previous seven days. Average daily
planetary A index declined from 7.3 to 5.6, while mid-latitude A index went from
8.1 to 5.
Last
week I mentioned that sunspots should return soon, based on the predicted solar
flux, but those projections have softened. On June 6 the 45-day predicted solar
flux was 70 on June 7-14, 72, 72 and 71 on June 15-17, 70 on June 18-29, 71 on
June 30, 72 on July 1-13, 71 on July 14, and 70 on July 15-21.
Predicted
planetary A index is 8, 10 and 8 on June 7-9, 5 on June 10-22, then 8, 10, 12
and 8 on June 23-26, 5 on June 27-29, 8 on June 30 through July 2, 5 on July
3-4, 8 on July 5-6, 5 on July 7-19, then 8 and 10 on July 20-21.
Spaceweather.com
sent this alert on June 5: "A DAYTIME METEOR SHOWER IS UNDERWAY: Radars in the
northern hemisphere are pinging with activity as one of the strongest meteor
showers of the year takes place in broad daylight. The source of the shower is
sun-grazing Comet 96P/Machholz."
Dick
Bingham, W7WKR, alerted us to this, and wrote: "What a fine six-meter opening
this afternoon! I copied many of you on FT8 working across the country. The one
I really would have enjoyed capturing was NW1P in FN67 - probably the only
person in the USA there. Listening to all the meteor-echoes was impressive.
Seemed like up to 10 per minute for a while.”
Jon Jones, N0JK, wrote: "I
enjoyed reading N8II's detailed report of his activity in the WPX CW this year.
I noted his rare Hawaiian contact on 10-meters described in the W1AW bulletin
at http://www.arrl.org/w1aw-bulletins-archive/ARLP022/2019
“Six
meters was also open from Hawaii to the mainland USA on May 25. At almost the
exact same time Jeff worked WH7V on 10 meters, VE2XK worked NH6Y on 6
meters:
NH6Y
19/05/25 1859Z 50313.0 FN07 ES BL10 TU FT8 qso & grid VE2XK
NH6Y
19/05/25 1857Z 50313.0 DN70MQ ES BL10TS K0GU
“No
Hawaii contacts from here in Kansas, but I logged KP4EIT and KP4AJ on 6-meter
FT8 at about 2000 UTC on May 25."
Geomagnetic
activity forecast for the period June 7 to July 3, 2019 from F.K. Janda,
OK1HH.
Geomagnetic
field will be:
Quiet on June 13, 16-18, 28, 30, July 1, 3
Quiet to
unsettled on 8, 10-11, 14, 19-22, 27, 29
Quiet to active on June (12, 15,)
26, July 2
Unsettled to active on June (7, 9,) 23-25
No active to
disturbed days expected.
Solar
wind will intensify on June 10-14, 24-27
Parenthesis
means lower probability of activity enhancement.
Lance Collister,
W7GJ, of Frenchtown, Montana is interested in 6 meter moonbounce, and runs a
Magic Band EME email group, which you can subscribe to via his web site at http://www.bigskyspaces.com/w7gj/
Here is the
latest video from Dr. Skov: Coronal Hole, Bright Region Oreo: Solar Storm Forecast
06-05-2019
If you would like to make a comment or have a tip for our
readers, email the author at k7ra@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 May 30 through June 5, 2019 were 0, 0, 0, 0, 0, 0, and 0, with a
mean of 0. 10.7 cm flux was 68.7, 68.7, 69.7, 69.9, 69.8, 70, and 69.8, with a
mean of 69.5. Estimated planetary A indices were 8, 5, 4, 4, 5, 8, and 5, with a
mean of 5.6. Middle latitude A index was 8, 5, 3, 4, 4, 7, and 4, with a mean of
5.