Routine Space Environment Product (Daily)
Issued by NWS

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000
FXXX12 KWNP 280031
DAYDIS

:Product: Forecast Discussion
:Issued: 2017 Jun 28 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 very low. Region 2664 (N18W19, Dsi/beta) was stable
and inactive. There were no Earth-directed CMEs 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 (28-30 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 the next three days (28-30 Jun). 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 DSCOVR spacecraft, indicated
continued waning influence from a positive polarity CH HSS. Solar wind
speed gradually decreased, averaging around 450 km/s by periods
end. Total field strength was between 1 and 6 nT while the Bz component
dropped as low as -3 nT. Phi angle was predominantly positive throughout
the reporting period.

.Forecast...
Solar wind parameters are expected to reflect a nominal solar wind
environment through day one (28 Jun). Late on day two (29 Jun) and
early into day three (30 Jun) there will likely be a minor enhancement
from a positive polarity CH HSS.

Geospace

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

.Forecast...
The geomagnetic field is expected to be mostly quiet for day one (28
Jun). Quiet to unsettled conditions are likely late on days two and
three (29-30 Jun) due to the anticipated influence from an equatorial,
positive polarity CH HSS.



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