Routine Space Environment Product (Daily)
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FXXX12 KWNP 251231

:Product: Forecast Discussion
:Issued: 2017 Jun 25 1230 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 very low. Region 2664 (N18E14, Cso/beta) showed signs
of growth and consolidation in its intermediate spot group but remained
absent of significant flare activity. There were no Earth-directed CMEs
observed in available satellite imagery.

Solar activity is expected to be very low with a slight chance for
C-class flares over the next three days (25-27 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.

The greater than 2 MeV electron flux is expected to persist at normal to
moderate levels for the next three days (25-27 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, suggested
weak influence from a positive polarity CH HSS. Solar wind speeds
increased from starting values near 380 km/s to period ending values at
approximately 450 km/s. Total field (Bt) ranged between 3 and 10 nT
while the Bz component displayed a maximum southward deflection of -8
nT. Phi was variable but primarily oriented in a positive solar sector
throughout the reporting period.

Solar wind parameters are expected to reflect decreasing influence from
the positive polarity CH HSS on day one (25 Jun). A nominal solar wind
environment is expected on days two and three (26-27 Jun).


.24 hr Summary...
The geomagnetic field was at quiet to unsettled levels with an isolated
period of active conditions during the 25/0600-0900 UTC synoptic period.

The geomagnetic field is expected to be quiet to unsettled with isolated
periods of active conditions on day one (25 Jun) due to weak CH HSS
effects. Mostly quiet conditions are expected on days two and three
(26-27 Jun) under a nominal solar wind regime. is the U.S. government's official web portal to all federal, state and local government web resources and services.