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Major Aurora Alert!!

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19 years 11 months ago #8169 by Keith g
Major Aurora Alert!! was created by Keith g
All, a major aurora alert is underway, now if the snow would stop falling!
Keith.

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This Is SKY & TELESCOPE's AstroAlert for Sun-Earth Interactions
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A s t r o A l e r t
Sun-Earth Alert

Solar Terrestrial Dispatch
www.spacew.com

17 January 2005

POWERFUL X-CLASS SOLAR FLARE CREATES STRONG SPACE RADIATION STORM

A powerful X-class solar flare (class X3.8) erupted from active sunspot
Region 10720 at 09:52 UTC (4:52 am EST) on 17 January. This remarkable event
involved a steady increase in solar x-ray intensities for a period of over 2
hours before beginning a slow decline. X-rays remained above M-class levels
for over five and a half hours. The solar explosion was also exceptionally
"loud." At frequencies of 10 cm (about 2800 MHz), the explosion was over 80
times louder than the background noise of the Sun, registering a burst
intensity of 12,000 sfu (the normal background level being about 150 sfu).
The solar flare and the associated high velocity coronal mass ejection
succeeded in accelerating protons to near relativistic velocities, arriving
at the Earth within tens of minutes. The huge influx of energetic particles
increased the existing space radiation storm from a category S2 to a category
S3 event, which is sufficient to be of concern to spacecraft operators and
astronauts.

This event was associated with a high velocity Earthward-directed
coronal mass ejection. Although an analysis of the CME is not yet complete,
there is fair certainty that its arrival at the Earth will result in periods
of major to severe geomagnetic and auroral storm activity. The arrival time
is yet to be determined, but a good guess would probably be later on 18 and
into 19 January (UTC time).

Region 10720 still appears to be capable of unleashing additional
energetic solar events, which it may do (perhaps more than once) during the
next 5 to 6 days before it transits the western solar limb.


** End of Astroalert **

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19 years 11 months ago #8170 by albertw
Replied by albertw on topic Re: Major Aurora Alert!!
:?

Issued at 17 January 2005 - 11:12

Severe weather Warning
Very strong Westerly winds will develop later tonight and early tomorrow, reaching average speeds of 30 to 45 mph (50 to 75 Km/hr), gusting 60 to 70 mph or more (95 to 110 Km/hr or more). Winds will slowly ease later Tuesday. Scattered snow showers will occur overnight and tomorrow, with accumulations of 5 to 10 cm possible especially in Connaught and Ulster. Very high seas in excess of 10 metres are expected also along Atlantic coasts, which could cause coastal flooding. Valid until 2100 hours Tuesday 18/1/05.

17 January 2005 - updated at 15:50hrs
Tonight Weather in Brief
Frequent blustery showers of rain or hail, some thundery. The showers will become increasingly wintry tonight, with sleet and snow falling across the northern half of the country and accumulating in places. Becoming even windier also, with gusts of 50 to 70 mph developing as winds veer west to northwest, strongest in the north and west.

Albert White MSc FRAS
Chairperson, International Dark Sky Association - Irish Section
www.darksky.ie/

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19 years 11 months ago #8172 by Astro1996
Replied by Astro1996 on topic Re: Major Aurora Alert!!
Its like nature is playing with us, haha no aurora for you... :lol:

You stole my stars springfield!!

No one wrote any poems about stupid orange barf glow...

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19 years 11 months ago #8173 by dave_lillis
Replied by dave_lillis on topic Re: Major Aurora Alert!!
Craaaaaaaaaaaap :evil:
This bloody weather is a major bummer.
what we need in this country are some 10,000 foot mountains, so we can get above the clouds. :(

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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19 years 11 months ago #8178 by Astro1996
Replied by Astro1996 on topic Re: Major Aurora Alert!!

Craaaaaaaaaaaap :evil:
This bloody weather is a major bummer.
what we need in this country are some 10,000 foot mountains, so we can get above the clouds. :(


Or a Massive Fan of some sort......Shoo....shoo

You stole my stars springfield!!

No one wrote any poems about stupid orange barf glow...

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19 years 11 months ago #8181 by dmcdona
Replied by dmcdona on topic Re: Major Aurora Alert!!
Blizzard here in Kildare :cry:

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