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LF: Propagation conditions

To: "LF-Group" <[email protected]>
Subject: LF: Propagation conditions
From: "Alan Melia" <[email protected]>
Date: Fri, 19 Oct 2001 10:38:40 +0100
Reply-to: [email protected]
Sender: <[email protected]>
Hi all,
The item below was just received from the spaceweather site.....
Space Weather News for October 19, 2001

Twisted magnetic fields above sunspot 9661 erupted this morning,
unleashing an X-class solar flare and hurling a coronal mass ejection
toward Earth.  The expanding cloud will likely strike our planet's
magnetosphere on October 21st during the peak of the Orionid meteor
shower.  Sky watchers, especially those living at higher latitudes, could
spot both meteors and auroras this weekend.  Stay tuned to for details and updates.

The flare which was an X1.6 Class occurred at about 0100z so would not
provide any enhancement in Europe. There was an 'after flare' at about 0600z
with a level of about M1.1 which would be enough to 'fill-in' the morning
dip. There is significant rise in the proton flux and this could lead to
slightly enhanced conditions during daylight today.  The CME is scheduled to
arrive around the 21st (look for a rise in Kp to 6 or 7, depending on the
orientation of the plasma field) The resultant ions should start to affect
LF at mid-latitudes by about 24 or 25th and last for 2 or three days. This
should lead to improved daytime conditions, but  probably to higher
absorption and depressed levels at night. We might look for improved DX
conditions at night by around the end of the month as the effect decays
away, leaving a some slow multipath fading to boost signals at times.

Happy DX hunting

Cheers de Alan G3NYK
[email protected]

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