SETI [ASTRO] 0715Z / 20 JULY AURORAL ACTIVITY SYNOPSIS:


Larry Klaes (lklaes@bbn.com)
Tue, 20 Jul 1999 07:44:11 -0400


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>Date: Tue, 20 Jul 1999 08:32:51 -0300 (ADT)
>From: Michael Boschat <andromed@ATM.DAL.CA>
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>Subject: [ASTRO] 0715Z / 20 JULY AURORAL ACTIVITY SYNOPSIS:
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>Reply-To: Michael Boschat <andromed@ATM.DAL.CA>
>
>>From Solar Terrestrial Dispatch - Alberta - Canada
>--------------------------------------------------
>
> 0715Z / 20 JULY AURORAL ACTIVITY SYNOPSIS:
>
> Auroral activity was quiet over the last 24 hours. Quiet conditions
> should persist through 21 July inclusive. Auroral activity may become
> slightly invigorated on 22 July in response to the possible arrival of
> an Earth-directed coronal mass ejection observed early on 19 July. The
> disturbance is not expected to be very significant, but may provide an
> opportunity for some upper-middle (and particularly high) latitude
> regions to spot periods of intensified activity. A potentially
> influential solar active region is rotating toward a more geoeffective
> position on the Sun. It produced a major flare today (which is not
> expected to influence the Earth's auroral activity) and has the
> potential of producing further influential activity over the next week.
> It is therefore considered to be a potential source of disturbed
> transient auroral activity and will be monitored closely.
>
> NOTE: Northern high latitude stations are now experiencing adverse
> seasonal twilight conditions. Regular reports from the higher northern
> latitude stations will therefore cease until later this fall.
>
> ** End of Aurora Report **
>
>
>



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