:Issued: 2010 May 29 1328 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 00529
SIDC SOLAR BULLETIN 29 May 2010, 1315UT
SIDC FORECAST (valid from 1230UT, 29 May 2010 until 31 May 2010)
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 29 May 2010  10CM FLUX: 072 / AP: 035
PREDICTIONS FOR 30 May 2010  10CM FLUX: 073 / AP: 013
PREDICTIONS FOR 31 May 2010  10CM FLUX: 074 / AP: 016
COMMENT: A C-class flare is unlikely to occur in any of the three
sunspot groups present on the solar disk (Catania numbers 74, 76 and
77). In the evening of May 28, an interplanetary magnetic cloud has
arrived to the Earth. The magnetic field in the cloud quickly became
southward, and the magnitude of the north-south component reached -14
nT. However, the solar wind speed remained low (around 360 km/s), so
only minor geomagnetic storm conditions resulted. The magnetic cloud was
most probably associated with the halo CME observed on the Sun on May
23. A minor geomagnetic storm is currently ongoing. It may last for
several hours more.

TODAY'S ESTIMATED ISN  : 019, BASED ON 10 STATIONS.

SOLAR INDICES FOR 28 May 2010
WOLF NUMBER CATANIA    : 022
10CM SOLAR FLUX        : 073
AK CHAMBON LA FORET    : 024
AK WINGST              : 014
ESTIMATED AP           : 013
ESTIMATED ISN          : 008, BASED ON 17 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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