:Issued: 2007 Apr 09 1033 UTC
:Product: documentation at http://www.sidc.be/products/meu
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# DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC     #
# (RWC Belgium)                                                      #
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SIDC URSIGRAM 70409
SIDC SOLAR BULLETIN 09 Apr 2007, 1016UT
SIDC FORECAST (valid from 1230UT, 09 Apr 2007 until 11 Apr 2007)
SOLAR FLARES  : Quiet conditions (<50% probability of C-class flares)
GEOMAGNETISM  : Active conditions expected (A>=20 or K=4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 09 Apr 2007  10CM FLUX: 071 / AP: 024
PREDICTIONS FOR 10 Apr 2007  10CM FLUX: 070 / AP: 024
PREDICTIONS FOR 11 Apr 2007  10CM FLUX: 070 / AP: 021
COMMENT: Geomagnetic conditions are expected to be mainly active over
the coming days as the fast stream from a recurrent coronal hole has now
arrived. The solar wind speed is presently ~500km/s but this is expected
to increase to nearer 700km/s based on previous rotations. The IMF has
been primarily northward until now and the hole looks somewhat smaller
and further S than during previous rotations so it is possible that the
overall impact will be less strong than previously. Solar activity is
expected to remain minimal from the currently spotless sun.



TODAY'S ESTIMATED ISN  : 000, BASED ON 04 STATIONS.

SOLAR INDICES FOR 8 Apr 2007
WOLF NUMBER CATANIA    : ///
10CM SOLAR FLUX        : ///
AK CHAMBON LA FORET    : 007
AK WINGST              : 004
ESTIMATED AP           : 004
ESTIMATED ISN          : 000, BASED ON 15 STATIONS.

NOTICEABLE EVENTS SUMMARY
DAY BEGIN MAX  END  LOC    XRAY OP  10CM RADIO BURST TYPES     Catania NOAA NOTE
NONE
END
BT
 
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