SIDC URSIGRAM 41205 SIDC SOLAR BULLETIN 05 Dec 2004, 1245UT SIDC FORECAST (valid from 1230UT, 05 Dec 2004 until 07 Dec 2004) SOLAR FLARES : Quiet conditions (<50% probability of C-class flares) GEOM
Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 339 Issued at 2200Z on 04 Dec 2004 IA. Analysis of Solar Active Regions and Activity from 03/2100Z to 04/2100Z: Solar activity was
During the past 48 hour period the K index at Boulder, CO reached a 4 for nine hours which is active and one high latitude station reached a K of 6 for three hours which is moderate geomagnetic storm
Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 340 Issued at 2200Z on 05 Dec 2004 IA. Analysis of Solar Active Regions and Activity from 04/2100Z to 05/2100Z: Solar activity was
The Boulder K index finally reached a 5 (minor geomagnetic storming) for a three hour period yesterday. We also saw high latitude K indexes reach a 5-6 (minor to moderate geomagnetic storming) for 12
Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 341 Issued at 2200Z on 06 Dec 2004 IA. Analysis of Solar Active Regions and Activity from 05/2100Z to 06/2100Z: Solar activity was
With the Sun temporarily virtually spotless again we will see daily solar flux values fall below 90. The end result will be lower MUF's and little in the way of F2 layer propagation on 10 & 12 meters
Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 342 Issued at 2200Z on 07 Dec 2004 IA. Analysis of Solar Active Regions and Activity from 06/2100Z to 07/2100Z: Solar activity was
David et all, The HF critical frequency could have stayed higher than 5 mhz and/or you may have been experiencing some sporadic E (Es) propagation. 73, Thomas F. Giella, KN4LF Retired Space & Atmosph
David, There are many forms of sporadic E (Es). Looking at global ionograms I see Es every day of the week, even though it's allegedly most prevalent in summer. Es propagation can be very stable too.
SIDC URSIGRAM 41209 SIDC SOLAR BULLETIN 09 Dec 2004, 1238UT SIDC FORECAST (valid from 1230UT, 09 Dec 2004 until 11 Dec 2004) SOLAR FLARES : Quiet conditions (<50% probability of C-class flares) GEOM
Yesterday December 08, 2004 at approximately 1959 UTC a long duration C2.5 solar flare at N04W11 occurred in associationwith sunspot group #10709. A filament eruption near N01W07 also occurred during
SIDC URSIGRAM 41210 SIDC SOLAR BULLETIN 10 Dec 2004, 1212UT SIDC FORECAST (valid from 1230UT, 10 Dec 2004 until 12 Dec 2004) SOLAR FLARES : Quiet conditions (<50% probability of C-class flares) GEOM
Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 344 Issued at 2200Z on 09 Dec 2004 IA. Analysis of Solar Active Regions and Activity from 08/2100Z to 09/2100Z: Solar activity was
(RWC-Belgium) # SIDC URSIGRAM 41211 SIDC SOLAR BULLETIN 11 Dec 2004, 1212UT SIDC FORECAST (valid from 1230UT, 11 Dec 2004 until 13 Dec 2004) SOLAR FLARES : Quiet conditions (<50% probability of C-cl
(RWC-Belgium) # SIDC URSIGRAM 41212 SIDC SOLAR BULLETIN 12 Dec 2004, 1220UT SIDC FORECAST (valid from 1230UT, 12 Dec 2004 until 14 Dec 2004) SOLAR FLARES : Quiet conditions (<50% probability of C-cl
(RWC-Belgium) # SIDC URSIGRAM 41213 SIDC SOLAR BULLETIN 13 Dec 2004, 1241UT SIDC FORECAST (valid from 1230UT, 13 Dec 2004 until 15 Dec 2004) SOLAR FLARES : Quiet conditions (<50% probability of C-cl
Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 347 Issued at 2200Z on 12 Dec 2004 IA. Analysis of Solar Active Regions and Activity from 11/2100Z to 12/2100Z: Solar activity was