> /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
>
> PRELIMINARY DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY
>
> 18 APRIL, 2005
>
> /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
>
> (Based in-part on SEC Data.)
> (The final report will be released tommorrow.)
>
>
> PRELIMINARY SOLAR & GEOPHYSICAL INDICES FOR 18 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: 80, 80, 80.
> Average 90-day Solar Flux: 92.
> Current Middle Latitude A-Index: 12
> Current Boulder K-Indices: 2331 343*
> Current Planetary K-Indices: 1321 222*
> Boulder A-Index 3-Day Forecast: 10, 8, 10.
> Planetary A-Index 3-Day Forecast: 12, 12, 12.
>
>
> SYNOPSIS OF TODAYS ACTIVITY
> ---------------------------
>
> Solar activity was low. Region 755 (S11E67) produced a
> C4.6 flare at 17/2107 utc. An associated cme was first observed on
> lasco C2 imagery at 17/2126 utc off the east limb. The cme is not
> expected to be geoeffective. No new regions were numbered today.
>
> Solar activity forecast: solar activity is expected to be very
> low to low.
>
> The geomagnetic field was quiet to unsettled with an isolated
> active
> period at mid latitudes. The greater than 2 mev electron flux at
> geosynchronous orbit reached high levels today.
>
> Geophysical activity forecast: the geomagnetic field is
> expected to be quiet to unsettled with possible isolated active
> conditions due to the effects of a coronal hole high speed stream
> moving into geoeffective position.
>
> Event probabilities 19 apr-21 apr
>
> Class M 10/10/10
> Class X 01/01/01
> Proton 01/01/01
> PCAF green
>
> Geomagnetic activity probabilities 19 apr-21 apr
>
> A. Middle Latitudes
> Active 25/20/25
> Minor storm 10/10/10
> Major-severe storm 01/01/01
>
> B. High Latitudes
> Active 25/25/25
> Minor storm 10/10/10
> Major-severe storm 05/05/05
>
>
> ** 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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HC-DX Propagation Channel:
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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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