Routine Space Environment Product (Daily)
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FXXX12 KWNP 290031

:Product: Forecast Discussion
:Issued: 2017 Jun 29 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. Region 2664 (N18W33, Cso/beta)
underwent decay and was inactive. No Earth-directed CMEs were evident in
available coronagraph imagery.

Solar activity is expected to continue at very low levels with a slight
chance for C-class flares all three days (29 Jun-1 Jul) primarily due to
the slight flare potential of Region 2664.

Energetic Particle

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

The greater than 2 MeV electron flux is expected to continue at normal
to moderate levels all three days (29 Jun-1 Jul) and the greater than 10
MeV proton flux is expected to remain at background levels.

Solar Wind

.24 hr Summary...
Solar wind parameters were indicative of a nominal solar wind speed
regime and likely proximity to the heliospheric current sheet (HCS).
Total IMF strength ranged primarily from 3 to 5 nT and the Bz component
underwent only weak deviations. Solar wind speed unsteadily decreased
from around 475 km/s to around 425 km/s, before returning to near 450
km/s by periods end. The phi angle varied between positive (away from
Sun) and negative (towards the Sun) sectors, but was in a positive
sector for most of the later half of the period.

A small, isolated positive polarity CH HSS is anticipated to rotate into
a weak Earth connected position on day one (29 Jun), causing a minor
increase in solar wind speed. This weak enhancement is likely to
decrease as the CH rotates away from a geoeffective position, but waning
effects from the CH HSS may cause a slightly disturbed IMF to continue
into day two (30 Jun). A return to more ambient, background like
conditions is expected by day three (1 Jul).


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

The geomagnetic field is expected to be quiet, with a few isolated
unsettled periods on days one and two (29-30 Jun) due to responses
associated with the disturbed solar wind environment. The overall
planetary response is expected to be quiet on day three (1 Jul). is the U.S. government's official web portal to all federal, state and local government web resources and services.