Routine Space Environment Product (Daily)
Issued by NWS

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000
FXXX12 KWNP 230030
DAYDIS

:Product: Forecast Discussion
:Issued: 2017 Jun 23 0030 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/wwire.html
#
#             Forecast Discussion
#
Solar Activity

.24 hr Summary...
Solar activity was very low. No notable flares occurred during the
period. No Earth-directed CMEs were observed in available coronagraph
imagery.

.Forecast...
Solar activity is expected to be very low with a slight chance for
C-class flares over the next three days (23-25 Jun).

Energetic Particle

.24 hr Summary...
The greater than 2 MeV electron flux reached moderate levels. The
greater than 10 MeV proton flux remained at background levels.

.Forecast...
The greater than 2 MeV electron flux is expected to be at moderate
levels for days one and two (23-24 Jun), with the expected onset of CIR
effects prior to a CH/HSS. High levels are forecast for day three (25
Jun) due to the CH. 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 indicated continued ambient background conditions,
until midday, when a SSBC was observed in conjunction with a phi angle
rotation from negative to positive with the onset of CIR effects. Solar
wind velocities were near 340 km/s. Total Field was between 4 and 7 nT
while the Bz component was between +/-5 nT.


.Forecast...
Solar wind parameters are expected to show disturbances later in the day
on day one (22 Jun) as the onset of a CIR prior to a positive polarity
CH HSS. A transition into the high speed stream from this feature is
forecast for days two and three (23-24 Jun).

Geospace

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

.Forecast...
The geomagnetic field is expected to be at quiet to active conditions on
days one and two (23-24 Jun) due to CH influences. HSS effects are
expected to wane on day three (25 Jun) with mostly unsettled and quiet
conditions forecast.



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