Routine Space Environment Product (Daily)
Issued by NWS

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
FXXX12 KWNP 270031

:Product: Forecast Discussion
:Issued: 2017 Jun 27 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 very low. Region 2664 (N18W07, Dso/beta-gamma) was
inactive. 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 (27-29 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 (27-29 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
velocities steadied near 550 km/s through the period. Total field
strength was between 2 and 6nT while the Bz component dropped as low as
-6 nT. Phi angle was predominantly positive throughout the reporting

Solar wind parameters are expected to reflect recovery from the positive
polarity CH HSS early on day one (27 Jun), returning to a nominal solar
wind environment. Nominal conditions are expected to continue into day
two (28 Jun) and early into day three (29 Jun). Later on day three there
will likely be a minor enhancement from a trans-equitorial, positive
polarity CH HSS.


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

The geomagnetic field is expected to be mostly quiet for days one and
two (27-28 Jun) due to waning CH HSS effects. Quiet to unsettled
conditions are likely late on day three (29 Jun) due to the anticipated
influence from an equatorial, positive polarity CH HSS. is the U.S. government's official web portal to all federal, state and local government web resources and services.