Does anyone know of work done (from a network operations point of view rather than from a solar science point of view) that correlates errors on the copper part of networks, and/or machines in datacenters, with sunspot activity? scott On Tue, 23 Jul 2002, Andy Ellifson wrote: : : For anyone that operates a wireless network or a : copper based network: : : : Official Space Weather Advisory issued by NOAA Space : Environment Center : Boulder, Colorado, USA : : SPACE WEATHER ADVISORY BULLETIN #02- 2 : 2002 July 23 at 12:00 p.m. MDT (2002 July 23 1800 UTC) : : **** ( CORRECTED ) MAJOR SUNSPOT ACTITVITY **** : : A major sunspot region has rotated onto the visible : face of the sun. : This region, designated as Region 39 by NOAA Space : Environment Center : forecasters, is believed to have been the source of : three large coronal : mass ejections on the far side of the sun beginning on : July 16. This : region will rotate across the visible side of the sun : over the next two : weeks and is expected to produce more solar activity. : : Since appearing on the visible side yesterday (July : 22) this region has : already produced a major flare at 6:35 pm Mountain : Daylight Time (MDT) : on July 22 (0035, July 23 UTC). Radio blackouts : reached category R3 : (Strong) on the NOAA space weather scales. In : response to the major : flare, a geomagnetic storm is possible and is expected : to begin between : 8:00 pm MDT on July 23 and 8 am MDT on July 24 (0200 - : 1400, July 24 : UTC). The geomagnetic storm may reach category G2 : (moderate) levels on : the NOAA space weather scales. : : Category R3 radio blackouts result in widespread HF : radio communication : outages on the dayside of the Earth and can also : degrade low frequency : navigation signals. Category G2 geomagnetic storms : can lead to minor : problems with electrical power systems, spacecraft : operations, : communications systems, and some navigational systems. : Aurora : Borealis / Australis (northern / southern lights) may : be seen down into : the mid latitudes (New York, Madison, Boise, : Vladivostok, Rome, : Tasmania, Wellington - NZ, Puerto Montt - Chile) : : Data used to provide space weather services are : contributed by NOAA, : USAF, NASA, NSF, USGS, the International Space : Environment Services : and other observatories, universities, and : institutions. For more : information, including email services, see SEC's Space : Weather : Advisories Web site http://sec.noaa.gov/advisories or : (303) 497-5127. : The NOAA Public Affairs contact is Barbara McGehan at : Barbara.McGehan@noaa.gov or (303) 497-6288. : :