Routine Space Environment Product (Daily)
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FXXX12 KWNP 270031

:Product: Forecast Discussion
:Issued: 2016 Jul 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. Several B-class flares were observed
originating from beyond the west limb, including the largest flare of
the period, a B9 flare. There are currently no sunspots on the visible
disk, and no Earth-directed coronal mass ejections (CMEs) were observed
in available coronagraph imagery.

Solar activity is expected to be very low with a slight chance for
C-class flares throughout the period (27-29 Jul).

Energetic Particle

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

The greater than 2 MeV electron flux is expected to be at normal to
moderate levels, with isolated periods at high levels over the next
three days (27-29 Jul). The greater than 10 MeV proton flux is expected
to remain at background levels throughout the forecast period.

Solar Wind

.24 hr Summary...
Solar wind parameters reflected nominal conditions. Solar wind speed
decreased from near 390 km/s to end-of-period speeds near 350 km/s.
Total field strength ranged primarily between 1 and 5 nT, while the Bz
component fluctuated between +/- 3 nT. The phi angle began the period in
a positive orientation before shifting into a negative position near
26/0930 UTC for the remainder of the period.

Solar wind parameters are expected to become slightly enhanced late on
day one (27 Jul) as a CH HSS moves into a geoeffective position.
Enhanced conditions are expected to continue into days two and three
(28-29 Jul) as CH HSS effects keep the solar wind environment enhanced.


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

The geomagnetic field is expected to be at quiet to unsettled levels for
most of day one (27 Jul). Isolated active to G1 (Minor) storm conditions
are expected later on day one as an anticipated CH HSS becomes
geoeffective. Mostly quiet to unsettled levels, with isolated periods of
active conditions, are expected on days two and three (28-29 Jul) as CH
HSS effects persist. is the U.S. government's official web portal to all federal, state and local government web resources and services.