> /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
>
> PRELIMINARY DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY
>
> 25 APRIL, 2005
>
> /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
>
> (Based in-part on SEC Data.)
> (The final report will be released tommorrow.)
>
>
> PRELIMINARY SOLAR & GEOPHYSICAL INDICES FOR 25 APRIL, 2005
> ----------------------------------------------------------
>
> DRAO 10.7 cm Solar Flux at 18Z, 20Z, 22Z: N/A, N/A, N/A sfu.
> Predicted Solar Flux for Next 3 Days: 90, 100, 100.
> Average 90-day Solar Flux: 90.
> Current Middle Latitude A-Index: 12
> Current Boulder K-Indices: 2332 333*
> Current Planetary K-Indices: 3432 211*
> Boulder A-Index 3-Day Forecast: 5, 5, 5.
> Planetary A-Index 3-Day Forecast: 8, 5, 5.
>
>
> SYNOPSIS OF TODAYS ACTIVITY
> ---------------------------
>
> Solar activity continues at very low levels. New region
> 756 (S06E68) is rotating into view on the southeast limb. Although
> this region's close proximity to the limb is hindering the analysis,
> it does appear to be a moderate size sunspot group, with initial
> measurements of over 400 millionths in white light area. The cme
> activity on 22 april may have been associated with this region;
> however, activity in the past 48 hours was limited to occasional
> B-class flares. No other activity of note occurred this period.
>
> Solar activity forecast: solar activity is expected to be very
> low to low. Region 756 has the potential to produce C-class flares.
>
> The geomagnetic field was quiet to unsettled with isolated
> active
> periods at high latitudes. The weak high speed stream in progress
> since 23 april is declining. Solar wind speed ended the period at
> around 480 km/s.
>
> Geophysical activity forecast: the geomagnetic field is
> expected to be quiet to unsettled.
>
> Event probabilities 26 apr-28 apr
>
> Class M 05/05/05
> Class X 01/01/01
> Proton 01/01/01
> PCAF green
>
> Geomagnetic activity probabilities 26 apr-28 apr
>
> A. Middle Latitudes
> Active 15/15/15
> Minor storm 05/05/05
> Major-severe storm 01/01/01
>
> B. High Latitudes
> Active 20/20/20
> Minor storm 05/05/05
> Major-severe storm 01/01/01
>
>
> ** End of Daily Report **
> _______________________________________________
73 & GUD DX,
Thomas F. Giella, KN4LF
Retired Space & Atmospheric Weather Forecaster
Plant City, FL, USA
Grid Square EL87WX
Lat & Long 27 58 33.6397 N 82 09 52.4052 W
kn4lf@arrl.net
Contesting Propagation eReflector:
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KN4LF Daily Solar Space Weather & Geomagnetic Data Archive:
http://www.kn4lf.com/kn4lf5.htm
KN4LF Daily LF/MF/HF Radio Propagation Outlook:
http://www.kn4lf.com/kn4lf6.htm
KN4LF HF/MF Radio Propagation Theory Notes: http://www.kn4lf.com/kn4lf8.htm
KN4LF Amateur & SWL Radio History: http://www.kn4lf.com/index.htm
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