Routine Space Environment Product (Daily)
Issued by NWS

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000
FXXX12 KWNP 231231
DAYDIS

:Product: Forecast Discussion
:Issued: 2017 Mar 23 1230 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 remained very low. Region 2643 (N08E50, Hrx/alpha)
produced a B3 flare at 22/1858 UTC and remained unchanged. No
Earth-directed CMEs were observed in coronagraph imagery.

.Forecast...
Solar activity is expected to remain very low, with a slight chance for
C-class flares all three days (23-25 Mar).


Energetic Particle

.24 hr Summary...
The greater than 2 MeV electron flux was at normal to high levels with a
maximum flux of 3,545 pfu observed at 22/2020 UTC. The greater than 10
MeV proton flux remained at background values.

.Forecast...
The greater than 2 MeV electron flux is expected to continue at high
levels all three days (23-25 Mar). The greater than 10 MeV proton
flux is expected to continue at background levels all three days.


Solar Wind

.24 hr Summary...
Solar wind parameters were indicative of continued, but waning CH HSS
influences. Solar wind speeds slowly decreased from near 700 km/s at the
start of the reporting period to speeds near 550 km/s by periods end.
Total field was steady near 5 nT while the Bz component began to make
weaker oscillations and has settled into a range of 2/-2 nT. The phi
angle was mostly positive.


.Forecast...
Solar wind speeds are expected to remain enhanced on day one due to
continued, but waning CH HSS effects. A return to nominal conditions is
expected on days two and three (24-25 Mar) as CH HSS effects diminish.


Geospace

.24 hr Summary...
The geomagnetic field was at mostly active levels, with an isolated
period of G1-Minor storm levels (22/21-24 UTC) due to CH HSS effects.

.Forecast...
The geomagnetic field is expected to be at active to G1-Minor storm
levels on day one (23 Mar) due to CH HSS effects. Day two (24 Mar) is
expected to see mostly quiet to unsettled conditions, with isolated
active periods. Quiet to unsettled levels are expected on day three (25
Mar) as CH HSS effects wane.



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