:Issued: 2012 Apr 10 1254 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 20410
SIDC SOLAR BULLETIN 10 Apr 2012, 1237UT
SIDC FORECAST (valid from 1230UT, 10 Apr 2012 until 12 Apr 2012)
SOLAR FLARES  : Eruptive (C-class flares expected, probability >= 50%)
GEOMAGNETISM  : Quiet (A<20 and K<4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 10 Apr 2012  10CM FLUX: 094 / AP: 006
PREDICTIONS FOR 11 Apr 2012  10CM FLUX: 093 / AP: 007
PREDICTIONS FOR 12 Apr 2012  10CM FLUX: 092 / AP: 010
COMMENT: Solar activity has been low, a C3.9 flare from NOAA AR 1451
peaked at 12:44 UT on April 9. More C-class flares can be expected. This
flare was related to a halo CME, with a speed of ~900 km/s, radio bursts
were also detected (type II and III). The bulk of the CME material was
seen traveling towards the west, but a glancing blow at the Earth (most
probably a shock and sheath) is possible on April 12. Geomagnetic
conditions are quiet, the CME from April 5 missed the Earth. A fast
solar wind from a recurrent coronal hole is expected at the Earth in
about 48h, this may increase geomagnetic conditions to active levels
with possible isolated minor storm periods.


TODAY'S ESTIMATED ISN  : 007, BASED ON 10 STATIONS.

SOLAR INDICES FOR 9 Apr 2012
WOLF NUMBER CATANIA    : ///
10CM SOLAR FLUX        : 095
AK CHAMBON LA FORET    : 016
AK WINGST              : 005
ESTIMATED AP           : 004
ESTIMATED ISN          : 010, BASED ON 10 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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