Routine Space Environment Product (Daily)
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FXXX12 KWNP 200031

:Product: Forecast Discussion
:Issued: 2017 Jan 20 0030 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. Regions 2625 (S00W20, Hax/alpha)
and 2626 (N08W11, Hax/alpha) both remained stable and were void of any
significant flare activity. No Earth-directed CMEs were observed in
available coronagraph imagery.

Solar activity is expected to continue at very low levels, with a slight
chance for C-class activity, all three days (20-22 Jan).

Energetic Particle

.24 hr Summary...
The greater than 2 MeV electron flux was at normal to moderate levels.
The greater than 10 MeV proton flux continued at background values.

The greater than 2 MeV electron flux is expected to reach moderate to
high levels on days one through three (20-22 Jan) following elevated
solar wind speeds associated with the positive polarity CH. The greater
than 10 MeV proton flux is expected to remain at background levels.

Solar Wind

.24 hr Summary...
Solar wind parameters, as measured by the DSCOVR spacecraft, reflected
the influence from a positive polarity CH HSS. Solar wind speeds
averaged near 590 km/s with a peak of 651 km/s. Total field strength
varied between 3 nT to 8 nT while the Bz component was variable between
+/- 6 nT. The phi angle remained in a positive sector.

Solar wind parameters are expected to begin a slow and gradual waning
trend over the next three days (20-22 Jan) as CH HSS influence begins to


.24 hr Summary...
The geomagnetic field was at quiet to active levels due to CH HSS

The geomagnetic field is expected to be at quiet to active levels on
days one and two (20-21 Jan) as CH HSS influence slowly tapers off.
Quiet to unsettled conditions are expected on day three (22 Jan) as CH
HSS effects subside. is the U.S. government's official web portal to all federal, state and local government web resources and services.