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LF: Flares and conditions

To: [email protected]
Subject: LF: Flares and conditions
From: "Mike Dennison" <[email protected]>
Date: Fri, 3 Mar 2000 09:47:00 -0000
Reply-to: [email protected]
Sender: <[email protected]>
Following yesterday's X and M flares, conditions appeared to be improved last night.
OH1TN was 559 with me - stronger than normal - and CFH was S7
from about 2030 (still daylight in Canada) which is much earlier
than normal. CFH was S9 by the time I went to bed at 2300, but I
left ON5OO's Eclipse program running overnight. I produced a
rough graph this morning and found that CFH gradually climbed to
a peak at about 0230UTC, dipped dramatically about an hour later,
rapidly recovered, then gradually declined to 0730 and dropped out
at 0830.
Interestingly, there was a further M class flare at 0215.

I have to run the Eclipse data into a spread sheet to produce a proper graph, and I will post the result on my web site tomorrow.
Not sure how much influence the flares had on the conditions (it's
easy to see coincidence as evidence), especially as the good
conditions Larry experienced last month coincided with a very high
A index (50+), a few days =after= the major flares. The A index
was 18 on the 1st, and is reported today (from yesterday's data) as
down to 12. Nevertheless this is interesting data.
Mike, G3XDV (IO91VT)

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