Routine Space Environment Product (Daily)
Issued by NWS

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000
FXXX12 KWNP 240030
DAYDIS

:Product: Forecast Discussion
:Issued: 2017 Aug 24 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 at low levels. Region 2671 (N11W45, Fsi/beta-gamma)
and Region 2672 (N08E34, Esi/beta-gamma) both produced C-class flares,
with Region 2672 producing the largest of the period, a C2/Sf flare at
23/1343 UTC. There were no Earth-directed CMEs observed in available
coronagraph imagery during the reporting period.

.Forecast...
Solar activity is expected to be at low levels, with a slight chance of
M-class flares (R1-R2; Minor-Moderate radio blackouts), for the next
three days (24-26 Aug).

Energetic Particles

.24 hr Summary...
The greater than 2 MeV electron flux reached high levels with a peak
flux of 3,710 pfu observed at 23/2020 UTC. The greater than 10 MeV
proton flux continued at background values.

.Forecast...
The greater than 2 MeV electron flux is expected to fluctuate between
moderate and high levels over the next three days (24-26 Aug), while the
greater than 10 MeV proton flux is expected to remain at background
levels.

Solar Wind

.24 hr Summary...
Solar wind parameters remained elevated throughout the reporting period.
Total field strength was between 2 and 8 nT. The Bz component was
negative most of the day with a maximum southward deflection of -7 nT.
The solar wind was nearly steady around 475 km/s, on average. The
phi angle rotated between positive and negative sectors, which is
oftentimes characteristic of transient effects.

.Forecast...
The solar wind environment is expected to remain enhanced into day one
(24 Aug). Isolated to occasional enhancements in the solar wind are
possible on day two (25 Aug). By day three (26 Aug) the solar wind
environment is expected to return to ambient, background levels.

Geospace

.24 hr Summary...
G1 (Minor) geomagnetic storm levels were reached as a result of
sustained southward Bz and elevated solar wind speeds.

.Forecast...
The geomagnetic field is expected to be at unsettled to active levels on
day one (24 Aug) with a chance for G1 (Minor) geomagnetic storming. Day
two (25 Aug) is expected to be at mostly quiet to unsettled levels, with
a chance for active levels, as the solar wind environment transitions
back to quiet levels. Day three (26 Aug) is expected to be at quiet to
unsettled levels.


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