[HiDARG-MEMBERS] Fwd: [PNWVHFS] Massive Coronal Hole Facing Earth _ propagation for HF?

[Jeff Moore]

Good info to have!

Jeff Moore  --  KE7ACY

---------- Forwarded message ----------
From: Alex Schwarz <alexschwarz at telus.net>
Date: Wed, Dec 20, 2017 at 9:35 AM
Subject: [PNWVHFS] Massive Coronal Hole Facing Earth _ propagation for HF?
To: Adam Farson <farson at shaw.ca>, David Shipman <davidshipman at shaw.ca>,
Walter Salden <ve7wrs at hotmail.com>, ve7qc at scholey.org, VE7MID <
VE7MID at telus.net>, George VE7QH <ve7qh at shaw.ca>, Merrick Grieder <
mgrieder at nsem.info>, Nick Massey <nick at nrmassey.com>
Cc: hamsci at googlegroups.com, PNWVHFS at googlegroups.com,
MDSRadio at googlegroups.com, John White <va7jw at shaw.ca>, Glen Kennedy VE7GPK <
wileone at telus.net>, ve7ef at shaw.ca, ve7irl at rac.ca, Sally Finora <
sfinora at telus.net>, Gordon Killally <gordonkillally46 at gmail.com>,
newsletter at nsarc.ca, Philip Moscinski <pmoscinski at gmail.com>


Hi Everybody;

Propagation has been rather good, especially on the lower bands, despite
the fact that we are fast approaching the solar minimum.

The sun just ended a 100 day and no sunspots period, with a tiny not yet
named sunspot that appeared a few days ago on the eastern limb. The solar
flux has fallen to below 70 and yet day after day propagation on shortwave
radio bands has been rather good.

The picture below is from SOHO and it is a false color image that uses a
wavelength that makes the corona visible in yellow. Usually the corona
reflects solar particles that are now allowed to escape onto space. These
particles interact with our planet’s atmosphere and magnetic field and
create auroras and propagation.

It seems like the sun is going into a hibernation cycle, very similar to
the one that was recorded in the 17th century which also caused a mini ice
age.

But it looks like amateur radio operators can  still find propagation even
in times of very low flux!!



All the best and 73;



Alex – VE7DXW





[image: MassiveCorona Hole.jpg]

Conditions at the MDSR test station are very noisy. The G2 storm has
arrived a few hours ago and all indicators are red. See NOAA message below.

Since the storm arrived at 14:00 UTC the mostly affected area is Western
Europe and Eastern America. Areas that are closer to 12:00 UTC are  always
affected more, because the particles from the sun (fast solar wind) come
down in a 90deg angle.



Current conditions at the MDSR test station:

80m closed S5 pulsating noise

40m open S3

30m open S2

20m open S2

15m closed S0

10m closed S0



Watch it live here:

http://users.skynet.be/myspace/mdsr/



All the best and 73;



Alex - VE7DXW

============================================================
===================

Space Weather Message Code: WARK05
Serial Number: 1444
Issue Time: 2017 Dec 05 1417 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1443
Valid From: 2017 Dec 05 0818 UTC
Now Valid Until: 2017 Dec 06 0300 UTC
Warning Condition: Persistence
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees
Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of
the U.S. such as northern Michigan and Maine.



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