No subject

A geomagnetic storm has a number of impacts listed at
http://en.wikipedia.org/wiki/Geomagnetic_storm#Disrupted_systems

"A G2 moderate geomagnetic storm can cause high-latitude power systems
to experience voltage alarms and long-duration storms may cause
transformer damage. HF radio propagation can fade at higher latitudes,
and aurora has been seen as low as New York and Idaho (typically 55=B0
geomagnetic latitude)." http://exm.nr/ZjVbyA

"There is no exact definition where that boundary lies but the high
latitude is situated around the 60=B0 magnetic latitude and higher; the
middle latitude between the 50=B0 and 60=B0 magnetic latitude and
everything below the 50=B0 magnetic latitude is considered to be in the
category of low latitude." http://bit.ly/16Q1G1q

While it is too early to get the full impact of this event, Altus is
not "high latitude".  Nevertheless, High Frequency radio such as the
State and SHARES nets as well as the Military Affliate Radio System
nets may be impacted, especially on those circuits that rely on polar
path along with navigation systems that rely on satellites to perform.
 The Space Weather Prediction Center in Colorado will be issuing
updates as needed.  Emergency Management staff and volunteers in Altus
monitor those products.

As they say on TeeVee, "stay tuned for further updates."

Lloyd


---------- Forwarded message ----------
From: Richard Smith - NOAA Federal <richard.smith at noaa.gov>

M: A strong M6-class solar flare on April 11th has hurled a CME toward
Earth.  Geomagnetic storms and high-latitude auroras are possible when
the fast-moving cloud reaches our planet on April 13th.  Visit
http://spaceweather.com for updates.


--
Lloyd Colston   director
Altus Emergency Management
Altus, OK      http://www.cityofaltus.org
Phone:  580.481.2260
Fax:  580.482.4738

It is better to be informed than it is to be afraid.

http://twitter.com/altusready
http://altusem.blogspot.com
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