Routine Space Environment Product (Daily)
Issued by NWS

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000
FXXX12 KWNP 180032
DAYDIS

:Product: Forecast Discussion
:Issued: 2018 Jan 18 0030 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/wwire.html
#
#             Forecast Discussion
#
Solar Activity

.24 hr Summary...
Solar activity was at very low levels.  Decay and inactivity were
observed in Region 2696 (S13W02, Bxo/beta).  No Earth-directed CMEs were
observed in available satellite imagery.

.Forecast...
Solar activity is expected to remain at very low levels throughout the
forecast period (18-20 Jan).

Energetic Particle

.24 hr Summary...
The greater than 2 MeV electron flux reached moderate levels and the
greater than 10 MeV proton flux was steady at background levels.

.Forecast...
The greater than 2 MeV electron flux is expected to be at normal to
moderate levels for days one and two (18-19 Jan), and normal levels on
day three (20 Jan).  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 were at nominal levels over the period.  Solar
wind speed declined from approximately 375 km/s to near 325 km/s.  Total
field ranged from 3-5 nT while the Bz component was between +5/-3 nT.
Phi angle was oriented in a predominantly positive sector.

.Forecast...
Solar wind parameters are expected to be near nominal levels for the
next two days (18-19 Jan). An enhancement from a negative polarity CIR
and subsequent CH HSS is expected on day three (20 Jan). Solar wind
speeds are expected to be near 550-575 km/s, as observed in STEREO A
PLASTIC data.

Geospace

.24 hr Summary...
The geomagnetic field was quiet.

.Forecast...
The geomagnetic field is expected to be mostly quiet for the next two
days (18-19 Jan), with isolated periods of unsettled conditions on day
two. Day three (20 Jan) is expected to be at mostly unsettled levels
with isolated periods of active conditions due to influences from a CIR
ahead of a negative polarity CH HSS.



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