Routine Space Environment Product (Daily)
Issued by NWS

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000
FXXX12 KWNP 221231
DAYDIS

:Product: Forecast Discussion
:Issued: 2017 Mar 22 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 was very low. No Earth-directed CMEs were observed in
available coronagraph imagery.

.Forecast...
Solar activity is expected to remain very low with a slight chance for
C-class flares all three days (22-24 Mar).


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 remained at background values.

.Forecast...
The greater than 2 MeV electron flux is expected to be at moderate to
high levels are expected on all three days (22-24 Mar) due to CH HSS
effects. 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 measured by the DSCOVR spacecraft were indicative
of CH HSS influences. Total field strength was between 10 and 14 nT for
most of the period, but has settled at near 7 nT since approximately
22/0400 UTC. The Bz component was variable with rapid oscillations
between positive and negative values, ranging from 10 to -7nT. Solar
wind speeds have gradually increased from speeds near 550 km/s to end of
period speeds near 725 km/s. The phi angle was mostly positive.

.Forecast...
Solar wind parameters are expected to remain enhanced all three days
(22-24 Mar) due to persistent CH HSS effects.


Geospace

.24 hr Summary...
The geomagnetic field reached minor (G1-Minor) storm levels due to
effects from the CH HSS.

.Forecast...
The geomagnetic field is expected to see primarily unsettled to active
levels, with isolated periods of G1 storming on days one and two (22-23
Mar), as CH HSS influences continue. Day three (24 Mar) is expected to
be at primarily quiet to unsettled levels, with a likely period of
active conditions as CH HSS influences continue, but begin to wane.


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