> :Issued: 2005 Apr 20 1241 UTC
> :Product: documentation at http://sidc.oma.be/products/meu
> #--------------------------------------------------------------------#
> # DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC #
> # (RWC Belgium) #
> #--------------------------------------------------------------------#
> SIDC URSIGRAM 50420
> SIDC SOLAR BULLETIN 20 Apr 2005, 1226UT
> SIDC FORECAST (valid from 1230UT, 20 Apr 2005 until 22 Apr 2005)
> SOLAR FLARES : Quiet conditions (<50% probability of C-class flares)
> GEOMAGNETISM : Active conditions expected (A>=20 or K=4)
> SOLAR PROTONS : Quiet
> PREDICTIONS FOR 20 Apr 2005 10CM FLUX: 077 / AP: 027
> PREDICTIONS FOR 21 Apr 2005 10CM FLUX: 075 / AP: 017
> PREDICTIONS FOR 22 Apr 2005 10CM FLUX: 073 / AP: 035
> COMMENT: A long-duration B8.0 flare originated from Catania sunspot
> group 55 (NOAA 0755) yesterday evening. It was accompanied by a strong
> fast CME directed eastwards (thus, not earthward). We expect more
> small-scale (B_class) flaring from this region with a small chance for a
> C-flare.
> Since yesterday the earth is under the influence of a small recurrent
> equatorial coronal hole. The solar wind speed has increased to about 550
> km/s and the IMF was strongly southwards for short intervals. This led
> to minor storm conditions (K=5 at Izmiran) earlier this morning. We
> expect active to minro storm conditions to continue for the next 24
> hours. A large transequatorial coronal hole is currently near the central
> meridian and is expected to lead to minro storm conditions from the
> evening of Friday, April 22 onwards.
>
> SOLAR INDICES FOR 19 Apr 2005
> SUNSPOT INDEX : 047
> 10CM SOLAR FLUX : 078
> AK CHAMBON LA FORET : 011
> AK WINGST : 008
> ESTIMATED AP : 008
>
> 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 #
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> #--------------------------------------------------------------------#
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:
http://lists.contesting.com/mailman/listinfo/propagation
HC-DX Propagation Channel:
http://www.hard-core-dx.com/index.php?topic=Propagation
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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