Routine Space Environment Product (Daily)
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FXXX12 KWNP 271231

:Product: Forecast Discussion
:Issued: 2015 Nov 27 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 very low levels. Region 2458 (N07E14, Cao/beta)
was the largest region on the disk. It exhibited decay in its trailer
spot over the past 24 hours. Of the three remaining spotted regions, all
were relatively stable or in gradual decay. No Earth-directed coronal
mass ejections were observed in available coronagraph imagery.

Solar activity is expected to be at very low levels with a chance for
C-class flares for the next three days (27-29 Nov).

Energetic Particle

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

The greater than 2 MeV electron flux is expected to remain at normal to
moderate levels over the next three days (27-29 Nov). The greater than
10 MeV proton flux is expected to persist at background levels
throughout the forecast period.

Solar Wind

.24 hr Summary...
Solar wind parameters, as measured by the ACE spacecraft, reflected a
minor enhancement. Total magnetic field strength increased from around 4
nT at the beginning of the period to a peak of 9 nT around 27/0130 UTC.
The Bz component was predominantly southward until after 27/0420 when a
rotation northward was observed. Wind speeds were relatively low around
260 km/s until after 27/0400 UTC, when a steady increase was observed to
around 320 km/s. Phi angle was positive (away) for most of the period
and rotated into the negative (towards) sector after 27/0400 UTC.

Solar wind parameters are expected to reflect near background levels on
days one through three (27-29 Nov).


.24 hr Summary...
The geomagnetic field was mostly quiet with an isolated period of
unsettled in response to a minor enhancement in solar wind parameters
early in the period.

The geomagnetic field is expected to be at quiet levels with isolated
periods of unsettled conditions on days one and two (27-28 Nov) due to
minor enhancements in the solar wind. Quiet conditions are expected to
return on day three (29 Nov). is the U.S. government's official web portal to all federal, state and local government web resources and services.