> /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
>
> PRELIMINARY DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY
>
> 21 APRIL, 2005
>
> /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
>
> (Based in-part on SEC Data.)
> (The final report will be released tommorrow.)
>
>
> PRELIMINARY SOLAR & GEOPHYSICAL INDICES FOR 21 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: 91.
> Current Middle Latitude A-Index: 6
> Current Boulder K-Indices: 3011 221*
> Current Planetary K-Indices: 2011 121*
> Boulder A-Index 3-Day Forecast: 15, 12, 8.
> Planetary A-Index 3-Day Forecast: 20, 20, 15.
>
>
> SYNOPSIS OF TODAYS ACTIVITY
> ---------------------------
>
> Solar activity was very low. Regions 752 (N03W55) and
> 755 (S12E21) continue to decay. X-ray flux background is down to
> approximately A2 level. No new regions were numbered today.
>
> Solar activity forecast: solar activity is expected to be very
> low.
>
> The geomagnetic field was quiet to unsettled.
>
> Geophysical activity forecast: the geomagnetic field is
> expected to be quiet to unsettled early on 22 april. A geoeffective
> coronal hole high speed stream is expected to increase conditions
> later in the day. Unsettled to active with minor storm periods are
> possible late on 22 april continuing into early 23 april.
> Conditions are expected to settle down on 24 april to mostly quiet
> to unsettled.
>
> Event probabilities 22 apr-24 apr
>
> Class M 01/01/01
> Class X 01/01/01
> Proton 01/01/01
> PCAF green
>
> Geomagnetic activity probabilities 22 apr-24 apr
>
> A. Middle Latitudes
> Active 30/30/20
> Minor storm 15/15/10
> Major-severe storm 05/05/01
>
> B. High Latitudes
> Active 40/40/30
> Minor storm 15/15/15
> Major-severe storm 10/10/05
>
>
> ** 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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