:Issued: 2006 Aug 27 1330 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 60827
SIDC SOLAR BULLETIN 27 Aug 2006, 1515UT
SIDC FORECAST (valid from 1230UT, 27 Aug 2006 until 29 Aug 2006)
SOLAR FLARES  : Quiet conditions (<50% probability of C-class flares)
GEOMAGNETISM  : Active conditions expected (A>=20 or K=4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 27 Aug 2006  10CM FLUX: 077 / AP: 020
PREDICTIONS FOR 28 Aug 2006  10CM FLUX: 078 / AP: 024
PREDICTIONS FOR 29 Aug 2006  10CM FLUX: 079 / AP: 016
COMMENT: Geomagnetic activity is expected to be mainly active with
potential for isolated intervals of minor storming. As a result of
entering the high speed stream from the recurrent coronal hole the solar
wind speed has increased and is presently steady at about 450km/s,
somewhat slower than during previous rotations. The IMF has increased to
>10nT and as a result of an initial Bz compnent of -15nT we expect the
strongest geomagnetic disturbances to occur early during the fast stream
transit. Solar activity is expected to be quiet though NOAA AR 0905
(Catania 72) is capable of another isolated C-class event like the C2.5
event from yesterday evening. At the time of writing no LASCO images are
available so it is not possible to tell whether the flare was acompanied
by a CME. If there was a CME then it would probably have an
earth-directed component due to the location of the flare very close to
disk centre.

TODAY'S ESTIMATED ISN  : 023, BASED ON 05 STATIONS.

SOLAR INDICES FOR 26 Aug 2006
WOLF NUMBER CATANIA    : 025
10CM SOLAR FLUX        : 076
AK CHAMBON LA FORET    : 006
AK WINGST              : ///
ESTIMATED AP           : 002
ESTIMATED ISN          : 015, BASED ON 16 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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