> /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
>
> PRELIMINARY DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY
>
> 17 APRIL, 2005
>
> /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
>
> (Based in-part on SEC Data.)
> (The final report will be released tommorrow.)
>
>
> PRELIMINARY SOLAR & GEOPHYSICAL INDICES FOR 17 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, 90, 90.
> Average 90-day Solar Flux: 93.
> Current Middle Latitude A-Index: 8
> Current Boulder K-Indices: 2320 232*
> Current Planetary K-Indices: 1221 111*
> Boulder A-Index 3-Day Forecast: 5, 10, 8.
> Planetary A-Index 3-Day Forecast: 8, 12, 12.
>
>
> SYNOPSIS OF TODAYS ACTIVITY
> ---------------------------
>
> Solar activity has been low. Newly numbered region 755
> (S11E76) generated three C-class events on 17 apr, two near 1300Z
> and one at 2054Z. All other regions remain steady.
>
> Solar activity forecast: solar activity is expected to be low.
> Region 755 has the continued potential to produce C-class activity.
>
> The geomagnetic field has been at quiet to unsettled levels.
> The
> greater than 2 mev electron flux at geosynchronous orbit reached
> high levels today.
>
> Geophysical activity forecast: the geomagnetic field is
> expected to be at quiet to unsettled levels. There's a chance for
> isolated periods of active levels as a high-speed stream from a
> small, but well defined coronal hole rotates into potentially
> geoeffective range from 19 - 20 apr.
>
> Event probabilities 18 apr-20 apr
>
> Class M 10/15/15
> Class X 01/01/01
> Proton 01/01/01
> PCAF green
>
> Geomagnetic activity probabilities 18 apr-20 apr
>
> A. Middle Latitudes
> Active 15/20/20
> Minor storm 01/05/05
> Major-severe storm 01/01/01
>
> B. High Latitudes
> Active 20/25/25
> Minor storm 05/10/10
> Major-severe storm 02/05/05
>
>
> ** 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:
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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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