Routine Space Environment Product (Daily)
Issued by NWS

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000
FXXX12 KWNP 231230
DAYDIS

:Product: Forecast Discussion
:Issued: 2017 Jun 23 1230 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 very low. No notable flares occurred during the
period. No Earth-directed CMEs were observed in available satellite
imagery.

.Forecast...
Solar activity is expected to be very low with a slight chance for
C-class flares over the next three days (23-25 Jun).

Energetic Particles

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

.Forecast...
The greater than 2 MeV electron flux is expected to persist at normal to
moderate levels for days one and two (23-24 Jun). High levels are
forecast for day three (25 Jun) in response to elevated wind speeds from
the positive polarity CH HSS feature. 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 indicated a slightly enhanced solar wind
environment under the influence of a CIR in advance of a positive
polarity CH HSS. Total Field was between 1 and 7 nT while the Bz
component reached a low of -5 nT. Phi angle was variable but oriented in
a primarily positive solar sector.

.Forecast...
Solar wind parameters are expected to reflex a continued disturbance as
the solar wind environment transitions into the high speed stream of
this forecasted feature.

Geospace

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

.Forecast...
The geomagnetic field is expected to be at quiet to active levels on
days one and two (23-24 Jun) due to CH HSS influence. Quiet to unsettled
conditions are expected on day three (25 Jun) as CH HSS effects begin to
taper.



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