Routine Space Environment Product (Daily)
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340
FXXX12 KWNP 250030
DAYDIS

:Product: Forecast Discussion
:Issued: 2017 Nov 25 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 Earth-directed CMEs were observed in
available satellite imagery.

.Forecast...
Solar activity is expected to be at very low levels for the next three
days (25-27 Nov).

Energetic Particle

.24 hr Summary...
The greater than 2 MeV electron flux was at moderate to high levels with
a peak flux of 2,976 pfu observed at 24/1820 UTC. 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 on days one and two (25-26 Nov). Normal to moderate levels
are expected on day three (27 Nov) with the arrival of a negative
polarity CH HSS. 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 near nominal levels this period. Solar wind
speed ranged from 330-410 km/s. Total field ranged from 5-8 nT while the
Bz component was between +/-7 nT. A prolonged period of -Bz was observed
between 24/1554-2123 UTC. Phi angle was oriented in a mostly positive
(away) solar sector until 24/1730 UTC when it switched to a negative
(towards) sector.

.Forecast...
Solar wind parameters are expected to be near nominal levels on days one
and two (25-26 Nov). By day three (27 Nov), solar wind parameters are
expected to become enhanced due to the arrival of a negative polarity CH
HSS.  Solar wind speeds in the 500-600 km/s range is likely based on
STEREO A Mag and Plastic data.

Geospace

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

.Forecast...
The geomagnetic field is expected to be at quiet to unsettled levels on
day one (25 Nov) with isolated active periods possible. Mostly quiet
levels are expected on day two (26 Nov). Quiet to active levels are
expected on day three (27 Nov) due to the arrival of a negative polarity
CH HSS.



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