SIDC Ursigram

3-day Forecast of Solar and Geomagnetic Activity: Latest Issue and Archive

INFO FROM SIDC - RWC BELGIUM 2017 Jul 27 12:12:21

Solar activity was at very low levels, and is expected to remain so. The
solar disk was spotless. No earth-directed coronal mass ejections (CMEs)
were observed in available coronagraphic imagery. The greater than 10 MeV
proton flux remained slightly above background levels.
Earth is exiting the high speed stream (HSS) from a positive polarity
coronal hole (CH). Wind speed gradually decreased from 590 km/s to its
current values near 450 km/s (DSCOVR). Bz oscillated between -4 and +3 nT
until about 19UT, when it started a much smoother variation between -3 and
+2 nT. The interplanetary magnetic field was mostly directed away from the
Sun. 
 
The geomagnetic field was at quiet levels. Mostly quiet geomagnetic
conditions are expected, with a chance on an unsettled episode.

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SIDC Fast Alert Products

presto
2017 Jul 23 1206 UTC
SoHO/LASCO C2 images show a full halo CME from 4:36UT onwards. STEREO [more]

quieta
2017 Jul 19 1216 UTC
START OF ALL QUIET ALERT ........................ The SIDC - RWC Belgium [more]

flaremail
2014 Sep 10 1926 UTC
A class X1.6 solar X-ray flare occurred on 2014/09/10 with peak time 17:45 [more]

cactus
2014 Sep 07 1337 UTC
The latest halo CME alert generated by the CACTus software package: 025|2014/09/06 [more]




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