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Here is this week's space weather and geophysical report, issued 2015 Nov 02 0132 UTC.
Highlights of Solar and Geomagnetic Activity
26 October - 01 November 2015
Solar activity was at low levels on 26-30 October and 01 November
with numerous C-class events, primarily observed from Region 2443
(N07, L=316, class/area Fkc/650 on 01 Nov). An isolated M1/Sf
(R1-Minor) flare was observed on 31 October at 1752 UTC from Region
2443. On 29 October, Type II (estimated 972 km/s shock velocity) and
Type IV radio emissions were detected at 0219 UTC and 0230 UTC,
respectively. SOHO/LASCO C2 imagery observed a non Earth-directed
CME off the SW limb at 29/0236 UTC, believed to be associated with
the Type II and Type IV radio activity.
A short-lived greater than 10 MeV at greater than or equal to 10 pfu
proton event was observed on 29 October. The event began at 29/0550
UTC, reached a maximum of 23 pfu at 29/1000 UTC and ended at 29/1700
UTC. Coincident with this event was a short-lived greater than 100
MeV at greater than or equal to 1 pfu event. This event began at
29/0435 UTC, reached a maximum of 2 pfu at 29/0610 UTC and ended at
29/0930 UTC. Both of these events were most likely associated with
activity just beyond the SW limb described above.
The greater than 2 MeV electron flux at geosynchronous orbit was at
normal levels on 26, 30-31 October and 01 November with moderate
levels obsered on 27-29 October.
Geomagnetic field activity was predominately at quiet levels with
some unsettled periods observed on 30-31 October and 01 November.
Solar wind parameters reflected a mostly nominal environment with
wind speeds ranging from a high of 483 km/s at 26/1145 UTC to a low
of 287 km/s at 29/0746 UTC. Total field strength ranged from 1-10 nT
while the Bz component did not vary much beyond +/- 7 nT. Phi angle
was in a positive (away) orientation from the beginning of the
period through early on 28 October when a switch to a negative
(towards) sector was observed. Phi switched back to a positive
sector at about 29/1915 UTC and remained so through the balance of
the summary period.
Forecast of Solar and Geomagnetic Activity
02 November - 28 November 2015
Solar activity is expected to be at predominately low levels with
moderate levels (R1-R2.Minor-Moderate) likely through the outlook
period. Region 2443, through 10 November, and the return of old
Regions 2434 (S09, L=165) on 07 November and 2437 (S18, L=098) on 12
November are likely to produce M-class activity through the outlook
period.
No proton events are expected at geosynchronous orbit in the absence
of any siginifcant flare activity.
The greater than 2 MeV electron flux at geosynchronous orbit is
expected to be at high to very high levels on 02-13 November due to
an enhanced solar wind environment as a recurrent, trans-equatorial
coronal hole high speed stream (CH HSS) becomes geoeffective. Normal
to moderate levels are expected from 14-28 November.
Geomagnetic field activity is expected to began the period at G1
(Minor), G2 (Moderate) and G3 (Strong) levels on 02 November
followed by G1 to G2 levels on 03 November as a recurrent,
trans-equatorial CH HSS impacts Earth. Unsettled to active levels
are expected on 04-06 November as CH HSS effects wane. Unsettled to
active levels are expected on 13-14 November and 16-17 November due
to periods of southward Bz and a weak positive polarity CH HSS.
Quiet to unsettled levels are expected for the remainder of the
outlook period.
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![Weekly Propagation Summary - 2015 Nov 02 16:10 UTC]()
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