:Issued: 2007 Dec 31 1238 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 71231
SIDC SOLAR BULLETIN 31 Dec 2007, 1226UT
SIDC FORECAST (valid from 1230UT, 31 Dec 2007 until 02 Jan 2008)
SOLAR FLARES  : Active (M-class flares expected, probability >= 50%)
GEOMAGNETISM  : Quiet (A<20 and K<4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 31 Dec 2007  10CM FLUX: 077 / AP: 005
PREDICTIONS FOR 01 Jan 2008  10CM FLUX: 079 / AP: 009
PREDICTIONS FOR 02 Jan 2008  10CM FLUX: 081 / AP: 003
COMMENT: Former active region NOAA10978 is about to return at the East
limb and appears to be still very active. It just produced a
long-duration C8.3 flare at 00:37UT Dec.31, soon after a first C1 flare
yesterday Dec.30. EIT imagery indicates that the C8 flare was partially
masked behind the limb and was thus probably an M-class flare, and that
it triggered a large East-limb CME. A strong rise of solar activity is
thus expected, with multiple C-flares and probable M flares. The
geomagnetic field is expected to remain mostly quiet with possible
unsettled periods in the next 48 hours, due to a solar wind sector
boundary crossing.

TODAY'S ESTIMATED ISN  : 000, BASED ON 06 STATIONS.

SOLAR INDICES FOR 30 Dec 2007
WOLF NUMBER CATANIA    : ///
10CM SOLAR FLUX        : 075
AK CHAMBON LA FORET    : ///
AK WINGST              : 002
ESTIMATED AP           : 002
ESTIMATED ISN          : 000, BASED ON 14 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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