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FXXX06 KWNP 170455

:Product: 7-day Space Weather Highlights
:Issued: 2014 Nov 17 0442 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
#                7-day Space Weather Highlights
Highlights of Solar and Geomagnetic Activity
10 - 16 November 2014

Solar activity levels ranged from low to high. Low levels were
observed on 10-14 November, moderate levels on 15 November and high
levels on 16 November. Regions 2205 (N15, L=001, class/area Ekc/410
on 07 Nov), 2208 (S11, L=307, class/area Esc/160 on 12 Nov) and 2209
(S14, L=254, class/area Fkc/940 on 16 Nov) produced the majority of
the activity. Region 2205 produced 19 C-class flares, the largest a
C7/Sb on 10/0222 UTC. Region 2208 produced 8 low-level C-class
flares while Region 2209 produced 13 C-class and 3 M-class flares.

At 13/0607 UTC, Region 2209 produced a C8 x-ray event. Moderate
level activity was observed on 15 November with a pair of M-class
flares from Region 2209. The region produced an M3/Sb at 15/1203 UTC
followed by an M3/1n at 15/2050 UTC. Both events were associated
with weak to moderate radio emissions including a pair of Tenflares
(226 sfu and 240 sfu) respectively. The period ended at high levels
on 16 November when Region 2209 produced an M5 x-ray event with an
associated 300 sfu Tenflare.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
normal levels on 10-14 November, moderate levels on 15 November and
high levels on 16 November.

Geomagnetic field activity was at predominately quiet to active
levels with isolated minor storm intervals observed midday on 10
November and again late on 11 November. The period began on 10
November with mostly unsettled to active levels and an isolated
minor storm period midday on the 10th. This activity was due to the
arrival of the 07 November CME early on the 10th combined with
effects from a weak, positive polarity coronal hole high speed
stream (CH HSS). 11-14 November saw mostly quiet to unsettled
conditions with isolated active to minor storm periods late on the
11th and early on the 12th. Extended periods of southward Bz,
elevated wind speeds and a solar sector boundary crossing (SSBC)
contributed to the activity during this time frame. Unsettled to
active geomagnetic conditions were observed during 15-16 November
due to effects from a co-rotating interaction region (CIR) in
advance of a recurrent, positive polarity CH HSS.

Solar wind parameters reflected the geomagnetic activity described
above. IMF total field (Bt) began the period at 22 nT before
relaxing to a fairly steady 5-8 nT by 11 November. Bt remained at
these levels through the balance of the period. The Bz component was
highly variable between +20 nT to -10 nT through 11 November. As
with the total field, Bz relaxed to not vary much beyond +/- 8 nT
through the remainder of the period. Solar wind averaged about 500
km/s through late on 14 November when a gradual increase in speed
was observed to peak at about 675 km/s on 16/0600 UTC. The period
ended with wind speed near 500 km/s. Phi angle was in a
predominately negative (towards) orientation through about 14/0530
UTC when a switch to a more positive (away) sector was observed.

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NOAA National Weather Service
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Silver Spring, MD 20910
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