archive: SETI [ASTRO] Middle Latitude Auroral Activity Watch is Active

SETI [ASTRO] Middle Latitude Auroral Activity Watch is Active

Larry Klaes ( lklaes@bbn.com )
Wed, 19 May 1999 09:39:33 -0400

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>Date: Wed, 19 May 1999 07:33:22 -0300 (ADT)
>From: Michael Boschat <andromed@ATM.DAL.CA>
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>To: ASTRO <astro@lists.mindspring.com>
>Subject: [ASTRO] Middle Latitude Auroral Activity Watch is Active
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>Reply-To: Michael Boschat <andromed@ATM.DAL.CA>
>
>>From Solar Terrestrial Dispatch - Alberta - Canada
>===================================================
>
>Middle Latitude Auroral Activity Watch is Active
>
> 0415Z / 19 MAY AURORAL ACTIVITY SYNOPSIS:
>
>Auroral activity became sporadically enhanced over the last 24 hours.
>Fairly substantial expansion of the equatorward edge of the auroral
>oval was noted following the arrival of a corotating shock that preceded a
>high-speed solar wind stream from a coronal hole. The result of this
>activity was sporadically moderate to strong bursts of auroral activity
>near the midnight sectors. Weather appears to have been a limiting factor
>for observing auroralactivity over many middle latitude locations. We
>anticipate the receipt of several additional middle latitude sightings in
>the northern U.S. and southern Canada over the next couple of days.
>Auroral activity is expected to continue sporadically active over the next
>24 hours before gradually diminishing toward quieter levels by 21 May.
>
> NOTE: High latitude stations are now experiencing adverse seasonal
> twilight conditions. Regular reports from the higher latitude stations
> will therefore cease until later this fall.
>
>
> ** End of Aurora Report **
>
>
>