Routine Space Environment Product (Daily)
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FXXX12 KWNP 271230

:Product: Forecast Discussion
:Issued: 2016 Jul 27 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. A few B-class flares were observed
originating from beyond the west limb early in the period - including
the largest flare of the period, a B9 flare at 26/1535 UTC. There are 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 moderate levels and the
greater than 10 MeV proton flux was at background levels throughout the

The greater than 2 MeV electron flux is expected to be at 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 were indicative of nominal conditions. Solar wind
speed ranged from about 320-360 km/s. Total IMF strength was primarily
between 2 to 5 nT, while the Bz component was variable, with no
pronounced southward deviations. The phi angle continued primarily in a
negative sector.

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 quiet.

The geomagnetic field is expected to be quiet to unsettled for most of
the remainder of day one (27 Jul). An isolated active period is expected
late on day one, with a slight chance of G1 (Minor) storm conditions, 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.