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FXXX12 KWNP 061231

:Product: Forecast Discussion
:Issued: 2016 Feb 06 1230 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
#             Forecast Discussion
Solar Activity

.24 hr Summary...
Solar activity was at low levels.  C1 flares occurred at 05/1311 UTC
from Region 2496 (N09E49) and 06/0311 UTC from Region 2494 (S12W11,
Dai/beta).  A long duration C1 flare occurred at 05/2120 UTC as a result
of a 9 degree filament eruption centered near S01E06 that occurred
between 05/1829-1941 UTC.  Another eruptive filament (approximately 10
degree) centered near S19W28 was observed lifting off between
05/1939-2016 UTC.  A associated CME was observed off the SW limb in
SOHO/LASCO C2 imagery beginning at 05/2112 UTC.  Preliminary WSA-ENLIL
model output suggests a possible weak glancing blow midday on 09
February, however further analysis is in progress.

Slight growth was observed in the trailing spots of Region 2492 (N13E15,
Cro/beta) while Regions 2493 (S06W67, Axx/alpha) and 2495 (S08W55,
Bxo/beta) were in a decay phase.  Region 2494 simplified to a beta
magnetic group.  New Region 2497 (N13E63, Hsx/alpha) rotated onto the NE
limb and was numbered this period.

Solar activity is expected to be at low levels with a slight chance for
M-class (R1-R2, Minor-Moderate radio blackouts) over the next
three days (06-08 Feb) primarily due to the flare potential of Region

Energetic Particle

.24 hr Summary...
The greater than 2 MeV electron flux was at normal levels while the
greater than 10 MeV proton flux remained at background levels.

The greater than 2 MeV electron flux is expected to continue at normal
levels on day one (06 Feb).  Moderate levels are possible on days two
and three (07-08 Feb) due to waning CH HSS effects.  The greater than 10
MeV proton flux is expected to continue at background levels.

Solar Wind

.24 hr Summary...
Solar wind parameters continued to decline towards nominal levels
through the period.  solar wind decreased from a high of 517 km/s to
near 450 km/s.  Total field (Bt) was between 1 nT and 5 nT with the Bz
component variable between +5 nT and -4 nT.  Phi angle was mostly
positive (away).

Late on day two (07 Feb), an enhancement from a solar sector boundary
crossing (SSBC) followed by the onset of a negative polarity CH HSS is
expected.  Enhancements are anticipated to persist through day three (08


.24 hr Summary...
The geomagnetic field was at quiet to unsettled levels.

The geomagnetic field is expected to be quiet to unsettled on day one
(06 Feb) under nominal solar wind conditions.  A SSBC followed closely
by a negative polarity CH HSS is expected late in the day on day two (07
Feb) causing unsettled conditions.  Unsettled to active conditions are
expected on day three (08 Feb), with minor storm (G1-Minor) conditions
possible, as CH HSS activity persists. is the U.S. government's official web portal to all federal, state and local government web resources and services.