> :Issued: 2005 Apr 21 1155 UTC
> :Product: documentation at http://sidc.oma.be/products/meu
> #--------------------------------------------------------------------#
> # DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC #
> # (RWC Belgium) #
> #--------------------------------------------------------------------#
> SIDC URSIGRAM 50421
> SIDC SOLAR BULLETIN 21 Apr 2005, 1140UT
> SIDC FORECAST (valid from 1230UT, 21 Apr 2005 until 23 Apr 2005)
> SOLAR FLARES : Quiet conditions (<50% probability of C-class flares)
> GEOMAGNETISM : Minor geomagnetic storm expected (A>=30 or K=5)
> SOLAR PROTONS : Quiet
> PREDICTIONS FOR 21 Apr 2005 10CM FLUX: 075 / AP: 008
> PREDICTIONS FOR 22 Apr 2005 10CM FLUX: 073 / AP: 022
> PREDICTIONS FOR 23 Apr 2005 10CM FLUX: 073 / AP: 024
> COMMENT: There has been no solar activity of any significance over the
> past 24 hours. Both sunspot groups currently visible are quiet and
> decaying, so we expect activity to remain very low.
> The solar wind speed is still high at 550 km/s due to the coronal hole
> influence, but the IMF is mostly northwards so that geomagnetic
> conditions are currently quiet. We expect the soalr wind speed to start
> decreasing later today with further quiet conditions. Late tomorrow, the
> fast solar wind stream from a larger transequatorial coronal hole is
> expected to arrive, which may lead to minor storm conditions.
>
> SOLAR INDICES FOR 20 Apr 2005
> SUNSPOT INDEX : 039
> 10CM SOLAR FLUX : 077
> AK CHAMBON LA FORET : 023
> AK WINGST : 020
> ESTIMATED AP : 021
>
> NOTICEABLE EVENTS SUMMARY
> DAY BEGIN MAX END LOC XRAY OP 10CM RADIO BURST TYPES Catania
> NOAA NOTE
> NONE
> END
> BT
>
> #--------------------------------------------------------------------#
> # Solar Influences Data analysis Center - RWC Belgium #
> # Royal Observatory of Belgium #
> # Fax : 32 (0) 2 373 0 224 #
> # Tel.: 32 (0) 2 373 0 491 #
> # #
> # For more information, see http://sidc.oma.be. Please do not reply #
> # directly to this message, but send comments and suggestions to #
> # 'sidctech@oma.be'. If you are unable to use that address, use #
> # 'rvdlinden@spd.aas.org' instead. #
> #--------------------------------------------------------------------#
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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